TABLE OF CONTENTS

Preface........................................................................................................................................4

A Note Regarding Site Access and Logging of Activities ........................................................5

Important items to log .......................................................................................................5

Service Records .........................................................................................................................5

List of Standard Equipment for an Ambient Air Monitoring Site .............................................6

A Note on Serial Cables .............................................................................................................7

Configuring and Setting Up a Coastal Environmental Datalogger Zeno 3200 .........................8

Communicating with the Zeno ..........................................................................................8

Downloading Data from the Zeno ....................................................................................9

Calibrating the Internal Temperature ................................................................................9

Uploading a Configuration to the Zeno ...................................................................................10

Retrieving Zeno Settings.................................................................................................10

How to Troubleshoot a Channel for Voltage Input ........................................................11

Upgrading to TCEQ's Firmware ..............................................................................................12

Electrical Grounding ................................................................................................................13

System Diagram for a Typical Site ..........................................................................................13

Installing an RM Young Wind Speed and Wind Direction Sensor .........................................15

Model 03002 Wind Sentry .......................................................................................................15

Wiring a S1276Z Air Temperature/Relative Humidity Sensor ...............................................21

S1276Z Air TemperaturE Relative Humidity SENSOR ................................................22

Reviewing the Data for Temperature/Relative Humidity ...............................................25

Wiring Zeno 3200 to Read Voltage Levels from an Ambient Air Monitor ............................25

Programming the datalogger ...................................................................................................26

Setting a Site for TCEQ Access ...............................................................................................27

Setting up an GSM 1208 Enfora Modem to Operate with TCEQ’s Network .........................27

Troubleshooting an Enfora Modem: ...............................................................................32

Reading Resistor Color Codes .................................................................................................33

Setting up an ozone analyzer ...................................................................................................34

NOx analyzer ...........................................................................................................................41

References-Wind Speed/Wind Direction .................................................................................46

References-Enfora Modem ......................................................................................................46

References-General ..................................................................................................................46

Zeno 3200 Board Layout .........................................................................................................47

Serial Cable for Zeno 3200 to Enfora GSM 1208 Modem ......................................................48

LIST OF FIGURES

Figure 1: System diagram for an air monitoring site. .............................................................14

Figure 2: Wiring the RM Young wind speed/wind direction sensor. ....................................15

Figure 3: Wiring diagram for RM Young 3002 Wind Sentry. ..............................................16

Figure 4: Wiring diagram S1276Z Temperature/Relative Humidity sensor. ........................21

Figure 5: Picture of a connected S1276Z Temperature/Relative Humidity sensor. ..............22

Figure 6: Schematic for serial cable between the modem (left), and “Host”, which is the

computer (from page 33 of the modem integration guide, reference #3). ...............................27

4

Preface

This document covers the operating procedures for setting up an ambient air monitoring site and

troubleshooting the various pieces of equipment that are typical of a site. In some cases, other

documents outside this one may be referenced for calibrating other ambient air monitoring

analyzers.

5

A Note Regarding Site Access and Logging of Activities

Site access will be given to those specifically involved with the air monitoring project. If

necessary, a list of names should be provided to the property owners for access to a site.

If ever making any changes to the system, make sure to log in to the datalogger and note those

changes.

Important items to log

1. Initial who made the change or accessed the site

2. If exchanging a piece of equipment, such as an ozone analyzer, make sure to note the

serial number, TAMUK property number if applicable. Some equipment, like weather

instrumentation, may not have a serial number with it.

3. Always note the time the change was made

Service Records

It is imperative to maintain detailed and accurate records of equipment maintenance. For each

analyzer, do the following:

1. Keep an electronic record for each one by serial number. This is a MS-Word file, a text

file, or a simple database.

2. Always date the entry for the activity.

3. Always log each calibration along with the values for the display and voltage output.

4. Always log any parts that were replaced.

5. Always log any part that is cleaned.

6. Always log a filter change.

6

List of Standard Equipment for an Ambient Air Monitoring Site

The following is a list of standard equipment for each site. This list may change as some

equipment is retired or no longer obtainable.

1. Dasibi 1008 Series Ozone Analyzer

2. Teledyne API Model 400E Ozone Analyzer

3. ThermoFisher Model 42C NOx Analyzer (some sites)

4. Zeno 3200 Datalogger (Coastal Environmental Systems)

5. Elk Products PK412 4-Amp 12VDC Power Supply

6. S1276Z Air Temperature/Relative Humidity (Coastal Environmental Systems)

7. RM Young 3002 Wind Speed/Wind Direction Sensor

8. 12VDC Relay (Radioshack)

9. 12VDC Power Supply (for relay)

10. Temperature controller

11. Enfora GSM 1208 IP Addressable Modem with Antenna

12. Ekto air conditioned shelter

7

A Note on Serial Cables

Much of the communication with the Zeno 3200 will be through a serial cable. With the

exception of an older model laptop or a desktop, most new laptops only come with a USB port.

To communicate with a RS-232 9-pin serial, two options are available.

One option is to purchase an USB to serial converter. Though other brands are adequate, the

Radioshack (Part #260-0183) USB cable has been chosen since this model is commonly

available and drivers are available for Windows 98 up to Windows XP. These are usually

adequate for logging into a datalogger like the Zeno 3200.

The second option is to purchase a PCMCIA card shown below that plugs into the card slots on

most laptops. The advantage of this type is that it provides a “hardware” serial port which is

necessary for some types of equipment, especially serial data interface-1200 baud, but is about

the double the price typically of the USB to serial cable.

The RS-232 serial pin configuration is different for each piece of equipment. The Enfora

modem needs a straight through 9-pin serial when accessed from Hyperterminal. Once

programmed and connected to a Zeno 3200, the modem should be connected with the serial

cable specifically for the Zeno. The serial diagrams for the Zeno 3200 are at the end of this

document.

8

Configuring and Setting Up a Coastal Environmental Datalogger Zeno 3200

Communicating with the Zeno Begin by attaching the RS232 serial cable specifically for the Zeno 3200 to the datalogger and to

either the serial port of the computer or hardware that provides a serial port.

Click on Window's Hyperterminal and set up the COM connection with the following values:

Bits per second: 9600

Data bits: 8

Parity: None

Stop bits: 1

Flow Control: Hardware

To set up the connection, go under File-�Properties to reach this dialog box:

Find the COM port to connect to under the Connect Using menu item. Go under the “Configure”

button to set the communication settings.

If the properties window above is greyed and it is not possible to highlight any item in the box,

make sure to disconnect first while in Hyperterminal and return to the window again.

If using a USB to Serial interface or PCMCIA card on a laptop and it is not obvious which COM

port Windows automatically selected, go to serial, find the “System” icon under the Control

Panel in Windows. If it necessary to install a “driver” for the USB to serial or serial card, follow

the prompts and make sure the files are available before installing.

Find the COM port number by doing the following:

9

Press the START button---->Settings--->Control Panel----->System--->Hardware tab--->Device

Manager button. Look for the label that says “Ports (COM & LPT)” with a + next to it and press

the + sign. A submenu should appear listing which ports are active or not working.

• Press the “CALL” button (see Hyperterminal help files) to connect. Either nothing or

some garbage appearing characters will appear. Press “U” <Enter> to get to the Zeno's

User Menu.

If successful, the following should appear:

USER MENU

(C) Communications Menu (T) Test Menu

(F) System Functions Menu (Z) Zeno Program Menu (S) Sample Period Menu (Q) Quit

(D) Data Retrieval Menu (H) Help

The Zeno being contacted must also be set at 9600 baud which is the default setting.

Downloading Data from the Zeno

To download from the Zeno, connect as instructed. At the User's Menu, press “D” for the “Data Retrieval Menu”. Select an option for downloading data.

Make sure to activate data capture while in Hyperterminal with the following:

1. Go up to the Transfer on the menu bar.

2. Select Capture Text

3. Follow prompts for a file name and a directory location.

4. Follow Zeno prompts to obtain data.

5. After the Data Retrieval Menu appears again, select Transfer---->Capture Text--->Stop.

The data is now saved to a text file. If you come back later in the day or week, you can save the

data to the same text file since the Hyperterminal will append the text to the existing selected

file.

However, it may be easier to load the text file into and editor and remove the extra keystrokes

and menu items recorded before importing into a spreadsheet.

Calibrating the Internal Temperature The internal clock on the Zeno 3200 is dependent upon temperature for accuracy.

Take the Zeno 3200 out of the box and set out in the room for at least a day. Take a mercury

thermometer and note the temperature. Go to the (S) System Function Menu. Select the option

(T) and enter the temperature as Fahrenheit or Celsius. For example, enter the temperature as

either 70F or 21.1C at the input prompt. Checking this parameter at least monthly will help the

Zeno maintain a more accurate time value.

10

To get the right time, go to www.time.gov to obtain the actual time for your region of the

country. Do not rely on the computer's internal clock since it may not match. The computer,

whether it is a laptop or desktop, will set its time with the server when you log on to the system.

A cell phone's clock is also good since many cell phone providers utilize the atomic clock to

determine time, but always check with www.time.gov to determine whether this is the case.

Uploading a Configuration to the Zeno WARNING: Before proceeding, make sure to download all current records. This procedure

clears the flash memory of all stored data.

1. Log onto the Zeno 3200 using a Hyperterminal program.

2. Go to the (Z) Zeno Program Menu to (L) System Load Menu to ( R) Receive Configuration From Host.

3. Answer 'Y' to the WARNING: All records in data logging memory will be deleted! Continue? (Y/N)

4. Go to the menu bar at the top of the Hyperterminal program and select Transfer-Send Text File. Browse to the directory to find the file to upload.

5. After uploading, go back up to the (Z) Zeno Program Menu and select (E) Save Parameters to EEPROM. Failure to do follow this step will cause the datalogger to lose

its configuration when the power is turned off or disconnected.

After downloading the sampling will begin. Give the datalogger at least a sample period or two

to stabilize and so that readings will begin to appear when selecting the option to test the sensor

inputs.

Retrieving Zeno Settings Sometimes it may be necessary to communicate with technical support whether the configuration

is correct or it is necessary to simply save the settings in an electronic file so that it can be

uploaded into other dataloggers. Follow the previous procedure to get to the (L) System Load Menu and then to (T) Transmit Configuration From Zeno. Follow the instructions above to

collect the text as it is transferred from the Zeno. It may also be a good idea to not only to store a

backup copy of the configuration but also (V) View Configuration & Menus (ASCII).

FLASH MEMORY Errors

Sometimes, the Zeno will fall into this loop:

4 flash memory chips are installed!

Please wait while flash memory is initialized...

[7mERROR: Task Z_OFFSET watchdog timeout!

11










To resolve, do the following:

1. Remove Zeno from enclosure

2. Open Zeno by removing the screws on the sides. Follow procedures with grounding

straps when handling electronics.

3. Once opened, remove the flash memory board. Two screws hold it in place.

4. Power up the Zeno with out the flash memory and let it run for a few minutes.

5. Turn the power off and replace the flash memory.

6. With the flash memory installed power up the Zeno.

This should resolve the problem.

How to Troubleshoot a Channel for Voltage Input

1. Find a DC Power supply that outputs up to 5V or a couple of alkaline batteries like AA,

C’s, D’s can also work as well.

2. For the selected channel, wire a connection to channel from the “+” connection of the

battery or power supply and wire the “-“ to any of the “GND” terminals of the Zeno 3200

datalogger.

3. Check the output voltage of the power supply with a digital voltmeter.

4. To see the voltage reading, go to the User Menu of the Zeno and go to the (T) Test Menu. Select option “R” or “S” to see the value of the inputs and see if the numbers

match the value of the voltmeter.

Note: It may be necessary to reduce the sampling period to a few seconds to test results quicker.

Change the sampling back to the intended time after testing.

12

Upgrading to TCEQ's Firmware

To upgrade the firmware, make sure to have the current file3.6 Test with CTS.mot for uploading.

1. Connect the DC power to the datalogger.

2. Connect the 9-pin Zeno serial cable to the "COM3" on the datalogger.

3. Connect the Zeno serial cable to the computer. If connecting using an USB to serial

converter, it may be necessary to force the converter to a COM2 identification.

4. To force a COM2, go to Start Settings Control Panel System Hardware (tab) Device

Manager (button).

5. Look for the "Ports (COM & LPT)" and find the COM port the USB to serial cable is

identified. Highlight connection, right click for "Properties". Go to Port Settings (tab),

Advanced (button), change COM port number to "2". This should force it to a COM2.

6. Run the Flashloader program. This is a DOS program that one should be able to run from

either Windows '98, Windows 2000, or Windows XP. Follow the prompts.

13

Electrical Grounding

The purpose of electrical grounding is to provide a reference point for electronic hardware so

that it can collect data from various instrumentation accurately.

The following is a symbol for a chassis ground (grounded to a huge piece of metal):

The following is a symbol for earth ground. The connection may be to a copper rod hammered

into the ground or to an AC electrical ground:

For this project, it was determined that the best ground was completed by wiring to the large grounding terminal on the Zeno 3200 to the AC electrical ground. This is done by purchasing a standard 110V 3-prong electrical plug and wiring the ground to the grounding terminal of the plug.

Metal rods were used in the past, but some sites would have in inadequate ground when it

became to dry at times during the year and causing problems with obtaining accurate data. The

grounding rod seemed to work best when the soil was either damp to very wet. Since this cannot

always be assured, ground to the AC system with an electrical plug and an insulated strand of

copper wire attached to the grounding post of the Zeno 3200.

System Diagram for a Typical Site

14

Figure 1: System diagram for an air monitoring site.

This is a system diagram showing how everything is connected together at each site.

Most of the components are obvious. A 4-Amp surge protected power supply was chosen for

powering the DC equipment. The 12VDC relay with an external power supply helps identify

whether AC power is on. The temperature controller protects the analyzer from becoming

overheated should the power fail; make sure to replace the AA batteries every few months.

15

Installing an RM Young Wind Speed and Wind Direction Sensor Model 03002 Wind Sentry

Tools required: Needle nose pliers, small flat blade screwdriver, small Phillips screwdriver, wire

stripper, wire cutter, large hammer, and compass to determine direction.

Materials required: #22 AWG shielded multi-conductor cable of appropriate length (Belden

9944), a 1-MegaOhm, ½ Watt, 5% tolerance resistor (Radio Shack part number 271-1134),

grounding rod (Radio Shack part number 15-530), #12 AWG copper wire for connecting the

ground of the Zeno 3200 to the rod.

1. Unpack the Wind Sentry from the box and make sure all components are present. Finish

assembling the unit using the tool provided to mount the cups properly. Make sure not to

bend the cups.

2. Open the cover and clip the jumper (J1 connection) located to the left of the terminal strip

as shown in the following picture.

Figure 2: Wiring the RM Young wind speed/wind direction sensor.

3. Wire the sensors according to the following wire diagram. Make sure you note which

color of the multi-conductor cable. There are no hard rules about which color wire should

be used for each connection, but try to stay consistent for each site installation so that

troubleshooting is easier. Here is the wiring diagram:

16

Figure 3: Wiring diagram for RM Young 3002 Wind Sentry.

4. Mount the instrument on a pole no larger in diameter than one inch. Make sure the wind

cups are oriented due south. Use a compass or GPS with compass to determine southerly

direction.

5. Make sure the grounding rod is securely pounded into the ground and that the grounding

connection from the rod to the grounding terminal on the Zeno 3200 to the earth ground

of the instrument.

SENSOR MENU Settings for Wind Direction

ITEM DATA COMMAND ENTERED

Item 1: Sensor Type code = 1 (12-bit ADC) c1/1 Item 2: Sensor Name = WDIR c2/WDIR Item 3: Sensor Input Channel = 8 c3/8 Item 6: Switched Power code = 0 (NO SWITCHED POWER) DEFAULT

Item 7: Sensor Excitation Voltage = 2 (EXC = 2.50 VDC) c7/2 Item 8: Switched Excitation Return = E c8/E Item 9: Sensor Warm up Time = 0 DEFAULT

Item 10: Sensor Sample Count = 1 DEFAULT

Item 11: Maximum Sensor Readings = 0 DEFAULT

Item 12: Sensor Timing Loop = 2 c12/2 Item 13: Conversion Coefficient A = 0 DEFAULT

Item 14: Conversion Coefficient B = 140.8 c14/140.8 Item 15: Conversion Coefficient C = 0 c15/0

DEFAULT = Default value: it is not necessary to enter a command for this item.

17

Settings for Wind Speed


Item 1: Sensor Type code = 7 (Digital Freq., f<10kHz) c1/7 Item 2: Sensor Name = wndspd c2/WSPD Item 3: Sensor Input Channel = 10 c3/10 Item 6: Switched Power code = 0 (NO SWITCHED POWER) DEFAULT

Item 7: Sensor Excitation Voltage = 0 (NO EXCITATION

VOLTAGE)

DEFAULT

Item 8: Switched Excitation Return = 0 (NO EXCITATION RETURN) DEFAULT

Item 9: Sensor Warm up Time = 0 DEFAULT

Item 10: Sensor Sample Count = 1 c10/1 Item 11: Maximum Sensor Readings = 0 DEFAULT


Item 14: Conversion Coefficient B = 1.6771

c14/1.677 Item 15: Conversion Coefficient C = 0 c15/0


1 Output is in m/s when B=0.750, mph when B=1.677, knots when B=1.4562, kph when

B=2.6994. Refer to page 2 of the manual for more information.

PROCESS MENU Settings for Wind Direction/Wind Speed


Item 1: Process Category Code 5 : Arithmetic C1/5 Item 2: Process Type code 2 : Add Data & Constant Process C2/2 Item 3: User-defined Process Name = WSPD c3/WSPD Item 4: Input for Augend(X) S3 : WSPD

2 C4/S3 2

Item 5: Constant Addend (Y) 0.43

C5/0.4 2


2 This data will vary depending on the number of sensors being connected to the ZENO

-3200.

3 Change constant with respect to previous constant entered for the wind speed: meters per

second: 0.2, knots and mph: 0.4, kilometers per hour: 0.7. See calibration formulas in the Wind

Sentry manual.


Item 1: Process Category Code 5 : Arithmetic C1/5 Item 2: Process Type code 13 : Conditional Select Process C2/13 Item 3: User-defined Process Name = 3: WSPD c3/WSPD Item 4: Input for Control Data (C) S3 : WSPD C4/S3 Item 5: Input for Output if Control=0 (X) S3 :WSPD C5/S3 Item 6: Input for Output if Control<0 (Y) S3 C6/S3 Item 7: Input for Output if Control>0 (Z) P3.1 : WSPD C7/P3.1

18


Item 1: Process Category Code 2 : Environmental C1/2 Item 2: Process Type code 1 : Wind Vector Average Process C2/1 Item 3: User-defined Process Name = Item 4: Input for Wind Speed P4.1 :WSPD C4/P4.1 Item 5: Input for Wind Direction S4: WDIR C5/S4 Item 6: Input for Compass S0.1 C6/S0.1 Item 7: Wind Gust Window(1 to 5 sec) 4 C7/4

DATA OUTPUT MENU Settings for Average Wind Speed


Item 1: Field Type code = 9 : Transmit and Log Data Field c1/9 Item 2: Output Message(s) = 1 DEFAULT

Item 3: Field Name = WSPD c3/WSPD Item 4: Data Process Record = P5.1

4 c4/P5.1 4

Item 5: Field Decimal Places = 1 c5/1 Item 6: Field Width = 5 c6/5 Item 7: Data Storage Class Code = 7 : Compressed Floating Point (2) c7/7


4 This value will vary depending on the number of sensors being connected to the ZENO

-

3200. Further, if you want scalar average wind speed instead of vector average wind speed, use

data output #3; i.e., P1.3.

Settings for Average Wind Direction



Item 3: Field Name = WDIR c3/WDIR Item 4: Data Process Record = P5.2

5 c4/P5.2 5

Item 5: Field Decimal Places = 0 DEFAULT

Item 6: Field Width = 3 c6/3 Item 7: Data Storage Class Code = 4 : 2-byte unsigned integer c7/4


5 This value will vary depending on the number of sensors being connected to the ZENO

-

3200. Further, if you want independent wind vector average instead of component wind vector

average, use data output #12; i.e., P1.12.

* Refer to the sensor's manual for correct signal names.

Troubleshooting Wind Speed and Wind Direction Sensor

Problem: No wind speed or wind direction values appearing test menu option.

Solution: Is the wiring connected properly? Is a voltage or frequency signal reaching the

channel? Check for a signal by placing a voltmeter, select DC of at least 20V, and touch the

leads to the Zeno 3200. The voltmeter's display should bounce rapidly with an oscillating

plus/minus voltage level while the cups are spinning. If signals are reaching the channel

locations (Channel 8 and Channel 10), then recheck the program configuration.

19

Solution: For wind direction, check the following using a voltmeter.

1. Check to see that the excitation voltage is reaching the instrument. Select a DC voltage

and place probes between the WDREF and WDEXC. If close to 2.5V, then the switched

excitation voltage is available.

2. Remove any power from WS/WD sensor. Select a resistance range up to 12-kilo-ohms on

a multi-meter and see if resistor range is from 2-kilo-ohms to 12-kilo-ohms appears when

leads are touched between the WDREF and WSIG terminals. If so, then the resistor is

fine.

Problem: Wind speed is recording properly but wind direction stuck on a particular value.

Solution: Review wiring to make sure no strands of wire from the shielding of the cable or any

other connectors are shorting the connection. For example, if other wires are touching anywhere

along the resistor, the circuit path could be changed resulting in improper readings. If this

appears fine, follow instructions for checking excitation voltage and resistance of sensor.

20

Checking the Data

To see if the data collected is valid, compare to other sites near by in the area, especially those

operated by the National Weather Service or Texas Commission on Environmental Quality. Due

to the practicality of using sealed bearings, the threshold limit is about 4 to 5 mph, so anything

less will result in a zero [mph] even though the more expensive gear used by the organizations

mentioned above could show 1 to 4 mph wind speeds for a given similar time frame. Also, the

official weather stations mount their wind speed/wind direction equipment at a standard height of

30-feet.

If there are any questions of the instrument's validity, consult with the vendor to evaluate the

equipment.

Reference Material

ZENO®-3200User Manual Version V2.02, June 27, 2003, P/N: 0302116012, Revision B,

COASTAL ENVIRONMENTAL SYSTEMS, Inc.820 First Avenue South • Seattle, WA 98134

Telephone (206) 682-6048 • Fax (206) 682-5658

Meteorological Monitoring Guidance for Regulatory Modeling Applications, EPA-454/R-99-

005, U.S. ENVIRONMENTAL PROTECTION AGENCY, Office of Air and Radiation

Office of Air Quality Planning and Standards, Research Triangle Park, NC 27711

February 2000

MODEL 03002,WIND SENTRY, FEBRUARY 1999, MANUAL PN 03002-90 R. M. YOUNG

COMPANY

21

Wiring a S1276Z Air Temperature/Relative Humidity Sensor

Tools required: Needle nose pliers, small flat blade screwdriver, wire stripper, adjustable wrench

for mounting the sensor to a weather station.

Materials required: 0.1% Tolerance 4.99k-ohm resister which came with product (WARNING!:

Do not use any other resistor with less tolerance)

Begin by stripping any additional wire if necessary so that an appropriate connection can be

made with the terminals. After confirming the colors match, use the following wire diagram:

Figure 4: Wiring diagram S1276Z Temperature/Relative Humidity sensor.

The S1276Z recently had redesign that allows it to operate without the 12V SWD excitation. The

programming can remain the same; it is fine to modify the program to keep the 12V SWD off.

When ordering a new S1276Z, make sure to keep the wire colors the same.

22

Figure 5: Picture of a connected S1276Z Temperature/Relative Humidity sensor.

If you choose a different channel for input, do not forget to change the location of the resistor

relative to the chosen channel and reprogram the datalogger to match the hardware change. See

Zeno 3200 operations manual for more information.

Following EPA protocol for installing weather instrumentation, make sure to mount the sensor at

least 6 feet above ground.

S1276Z Air TemperaturE Relative Humidity SENSOR

SENSOR MENU


Item 1: Sensor Type code = 2 (18-bit Single Ended A to D) c1/2 Item 2: Sensor Name = AT c2/AT Item 3: Sensor Input Channel = 5- c3/5- Item 4: Analog Channel Gain = 1 c4/1 Item 5: Analog Channel Attenuation = 4 c5/4 Item 6: Switched Power code = 0 (NO SWITCHED POWER) DEFAULT

Item 7: Sensor Excitation Voltage = 2 (EXC = 2.50 VDC) c7/2 Item 8: Switched Excitation Return = 0 DEFAULT

Item 9: Sensor Warm up Time = 0 DEFAULT

Item 10: Sensor Sample Count = 1 DEFAULT



Item 14: Conversion Coefficient B = 0.4 1

c14/0.4 1

Item 15: Conversion Coefficient C = 0 DEFAULT

Item 17: No. of Additonal 15-msec Delays 0 DEFAULT

1 Output is in: CENTIGRADE

23


Item 1: Sensor Type code = 2 (18-bit Single Ended A to D) c1/2 Item 2: Sensor Name = RELHUM c2/RELHUM Item 3: Sensor Input Channel = 5+ c3/5+ Item 4: Analog Channel Gain = 1 c4/1 Item 5: Analog Channel Attenuation = 2 c5/2 Item 6: Switched Power code = 4 : (12v SW’D B) C6/4 Item 7: Sensor Excitation Voltage = 0 DEFAULT

Item 8: Switched Excitation Return = 0 DEFAULT

Item 9: Switched Power Warm up Time = 1 C9/1 Item 10: Sensor Sample Count = 1 DEFAULT



Item 14: Conversion Coefficient B = 100 c14/100 Item 15: Conversion Coefficient C = 0 DEFAULT

Item 17: No. of Additonal 15-msec Delays 0 DEFAULT

PROCESS MENU


Item 1: Process Category Code = 4 : Special Sensor C1/4 Item 2: Process Number 1 : NTC Thermistor Process c2/1 Item 3: User-defined Process Name = 3 : AT_CALC c3/AT_CALC Item 4: Input Thermistor Voltage = S5 : AT

2 c4/S5 2

Item 5: a-Coefficient 0.001288 C5/0.001288 Item 6: b-Coefficient 0.0002356 C6/0.0002356 Item 7: c-Coefficient 9.557e-08 C7/9.557e-08 Item 8: R2 Resistance 4990 C8/4990 Item 9: Upper Limit 50 C9/50 Item 10: Lower Limit -40 C10/-40 Item 11: BIT Flag Number (1-31) 12 C11/12


-

3200.


Item 1: Process Category Code = 1 : General C1/1 Item 2: Process Number 2 : Averaging Process c2/2 Item 3: User-defined Process Name = RH_AVG C3/RH_AVG Item 4: Input Thermistor Voltage = S6 : RELHUM

2 c4/S6 2


-3200.


Item 1: Process Category Code = 5 : Arithmetic C1/5 Item 2: Process Number 2 : Add Data & Constant Process c2/2 Item 3: User-defined Process Name = RH_ADD C3/RH_ADD Item 4: Input for Augend (X) P7.1 : RH_AVG

2 C4/P7.1 2

Item 5: Constant Addend (Y) -100 C5/-100


-

3200.

24


Item 1: Process Category Code = 5 : Arithmetic C1/5 Item 2: Process Number 4 : Subtract Data Values Process c2/4 Item 3: User-defined Process Name = RH_SUB C3/RH_SUB Item 4: Input for Minuend (X) P7.1 : RH_AVG

2 C4/P7.1 2

Item 5: Input for Subtrahend P8.1 : RH_ADD C5/P8.1


-

3200.


Item 1: Process Category Code = 5 : Arithmetic C1/5 Item 2: Process Number 13 : Conditional Select Process c2/13 Item 3: User-defined Process Name = RH_SELECT C3/RH_SELECT Item 4: Input for Control Data © P8.1 : RH_ADD

2 c4/P8.1 2

Item 5: Input for Output if Control=0(X) P7.1 : RH_AVG C5/P7.1 Item 6: Input for Output if Control<0(Y) P7.1 : RH_AVG C6/P7.1 Item 7: Input for Output if Control>0(Z) P9.1 : RH_SUB C7/P9.1


-

3200.

DATA OUTPUT MENU



Item 3: Field Name = at c3/at Item 4: Data Process Record = P1.1

3 c4/P1.1 3

Item 5: Field Decimal Places = 1 c5/1 Item 6: Field Width = 5 c6/5 Item 7: Data Storage Class Code = 7 : Compressed Floating Point (2) c7/7

DEFAULT = Default Data, it is not necessary to enter a command for this Item.


-3200.

To determine whether the temperature and relative humidity are functioning properly, compare

against a sling psychrometer that has a thermometer and is used to determine the humidity level.

The air temperature should at least within a couple of degrees and the humidity within a +/- 3%

according to the product's specification sheet.

25

Reviewing the Data for Temperature/Relative Humidity

Since temperature and relative humidity may not vary all that much across a region, it is

acceptable to compare these values to other weather stations in the area at the same of time of

day under similar weather conditions.

Wiring Zeno 3200 to Read Voltage Levels from an Ambient Air Monitor

The maximum voltage a Zeno 3200 is capable of reading is 5V. For ambient air monitoring

applications with an ozone monitor, it is not too likely that a reading higher than 200 or 300 ppb

will be recorded on a REGULAR basis. Readings in the 4.80 ppm range have been recorded, but

only during thunderstorm activity and for brief periods of time.

If the ozone concentration is at 40 ppb on the display, the voltage could be recorded as 0.040 V

or 0.040 ppm. Programming the output can change the scaling of this number.

TCEQ prefers differential voltage connections as opposed to differential voltage connections.

To wire a differential voltage connection, make sure to know which (+) and (-) output terminals

will be needed to record data.

Choose a channel, and wire the (+) to the (+) of the channel, and the (-) to the (-) of the channel.

26

Programming the datalogger * ZENO 3200 System Setup File

* Program Version And Date: ZENO-3200 V1.60-1244E3.6-TEST with CTS Sep 25

2003 08:23:49

(C)opyright 2001, Coastal Environmental Systems, Seattle, WA, USA.* Setup

File Date And Time: 06/11/28 16:22:20

PARAM1 300 0 300 2 4 30 000 3216 9600 9600

PARAM2 9600 0 0 0 0 3 0 0 0 0

PARAM3 16777 0 60 18 0 0 0 0 2 2

PARAM4 2 2 0 0 0 3276800 1 18389 0 0

PARAM5 0 0 0 0 0 0 0 0 0 0

PARAM6 0 0 0 0

PARAM7 "NONE" "NONE" "" "ATQ0V1E1&C1S0=1" "" "" "" "LEADS" "Odem site"

SENSOR 1 "INT_TEMP" 3 0 0 4 0 0 1 1 0 3 0 1.8 32 0 1 0

SENSOR 7 "WSPD" 14 0 0 0 0 0 0 1 0 2 0 1.677 0.4 0 1 0

SENSOR 2 "WDIR" 8 0 3 0 2 5 0 1 0 2 0 140.8 0 0 1 0

SENSOR 2 "TEMP" 10 0 2 0 2 0 0 1 0 2 0 0.4 0 0 1 0

SENSOR 2 "HUMIDITY" 3 0 1 5 0 0 1 1 0 2 0 100 0 0 1 0

SENSOR 3 "O3" 2 0 1 0 0 0 0 1 0 2 0 1 0 0 1 0

SENSOR 8 "PWR_TEST" 11 0 0 4 0 0 0 1 0 3 0 1 0 0 1 0

SENSOR 8 "" 6 0 0 0 0 0 0 1 0 1 0 1 0 0 1 0

SENSOR 8 "" 7 0 0 0 0 0 0 1 0 1 0 1 0 0 1 0

PROCESS 1 2 S1.1

PROCESS 2 1 S2.1 S3.1 S0.1 4

PROCESS 1 2 S6.1

PROCESS 3 3 S1.1 -999 -1000 0 0

PROCESS 3 3 S7.1 0.1 0.9 22 0

PROCESS 1 2 S5.1

PROCESS 4 1 S4.1 0.001288 0.0002356 9.557e-08 4990

PROCESS 5 8 P7.1 0 1.8 32

PROCESS 3 1 P4.1 P4.1 P4.1 P4.1 P4.1 P4.1 P4.1 P4.1

DATA 6 1 "<0D><0A>" 1.1 0 0 0 1

DATA 4 1 "" 1.1 0 0 0 1

DATA 3 1 "" 1.1 0 0 0 1

DATA 9 1 "BIT" 9.1 0 6 0 6

DATA 9 1 "WSPD" 2.1 2 5 1 7

DATA 9 1 "WDIR" 2.2 2 5 2 7

DATA 9 1 "SDHZWD" 2.6 2 5 3 7

DATA 9 1 "WSPDAVG" 2.3 2 5 4 7

DATA 9 1 "MAXGUST" 2.7 2 5 5 7

DATA 9 1 "TEMP1" 8.1 2 5 6 7

DATA 9 1 "INT_TEMP" 1.1 2 5 24 7

DATA 9 1 "O3_AVG" 3.1 4 6 25 8

DATA 9 1 "REL_HUMIDI" 6.1 2 5 38 8

DATA 6 1 "50,K,00.00" 1.1 0 0 0 1

DATA 6 1 "00," 1.1 0 0 0 1

DATA 6 1 "51,K,99000" 1.1 0 0 0 1

SCHED "ozone span" "06/01/25 00:00:00" 00:01:00:00:00 "SDO118" U D

SCHED "stop span" "06/01/25 00:30:00" 00:01:00:00:00 "SDO018" U D

SCHED "zero span" "06/01/25 00:30:00" 00:01:00:00:00 "SDO119" U D

SCHED "stop span" "06/01/25 01:00:00" 00:01:00:00:00 "SDO019" U D

* !!SYSTEM TRANSFER COMPLETE.

* Turn Off File Capture Now.

* Enter Any Key To Continue.

27

Setting a Site for TCEQ Access

Before a site can go live, some initial paperwork must be submitted to TCEQ that will then

assign an appropriate site number and network address.

Setting up an GSM 1208 Enfora Modem to Operate with TCEQ’s Network Wire up the Enfora modem a 5V to 30V DC power supply. Make sure not to transpose the plus

and minus to the power connectors. Connect the external antenna.

Construct a 9 pin serial cable available that is connected one-to-one for each pin with a female

plug on one end and a male plug on the other. Here is how the cable should be wired (from page

33 of the modem integration guide-Reference 3):

1 DCD 1

2 RX 2

3 TX 3

4 DTR 4

5 GND 5

6 DSR 6

7 RTS 7

8 CTS 8

9 RING 9

Figure 6: Schematic for serial cable between the modem (left), and “Host”, which is the

computer (from page 33 of the modem integration guide, reference #3).

28

Connect the modem to the computer’s serial port or an USB to serial interface. Plug in the

modem and apply power with no SIM card installed. The solid amber LED should be solid; the

green LED will probably blink which means it is searching a connection. A solid green LED

indicates that it is registered with a GSM (this will not happen until a valid SIM card is inserted).

Click on Window's Hyperterminal (Start�Programs�Accessories�Communications�

Hyperterminal) and set up the COM connection with the following values. These are the factory

defaults for the GSM 1208 modem:

Bits per second: 115200

Data bits: 8

Parity: None

Stop bits: 1

Flow Control: None

To set up the connection, go under File-�Properties to reach this dialog box:

Find the COM port to connect to under the Connect Using menu item. Go under the “Configure”

button to set the communication settings. After pressing the “OK” button, the modem should

connect.

If the properties window above is grayed and it is not possible to highlight any item in the box,

make sure to disconnect first while in Hyperterminal and return to the window again.

If using a USB to Serial interface or PCMCIA card on a laptop and it is not obvious which COM

port Windows automatically selected, find the “System” icon under the Control Panel in

Windows. If it is necessary to install a “driver” for the USB to serial or serial card, follow the

onscreen instructions and make sure the files are available before installing.

Find the COM port number by doing the following:

29

Press the START button---->Settings--->Control Panel----->System--->Hardware tab--->Device

Manager button. Look for the label that says “Ports (COM & LPT)” with a + next to it and press

the + sign. A submenu should appear listing which ports are active or not working. Note the

correct port, and return to Hyperterminal.

While setting up the properties, go under the “Settings” tab and press the “ASCII Setup” button.

The following settings can be modified while connected to the Enfora modem.

Check the box as shown and put the values at each location as shown. Press OKAY to continue.

30

The settings can be saved for another modem. Press OK again to return to Hyperterminal

window and connect. Once connected, type “ATI” and press enter. The message “Enfora, L.P.”

should appear followed by an “OK.”

Type the following commands and press enter. An “OK” should appear after each command is

executed. Each command can be entered in upper or lower case (AT&F and at&f are valid). The

first command sets the Enfora to factory defaults, the second stores the changes, and the third

changes the baud rate of the modem to 9600.

AT&F OK response

AT&W OK response

AT+IPR=9600 OK response

NOW disconnect HyperTerminal and modify the connection properties to 9600 baud, and reconnect. The modem can stay powered while doing this part. To test connection, type “ATI” and press enter and wait for an “OK” response.

Create the following text file by copying from this document and pasting into Notepad or a word

processor and save as text file with a filename and with the extension “.txt”. Leave no additional

spaces between the lines or lines at the beginning of the file. Make sure to assign a modem

channel number and remove the comment in parenthesis.

AT$PADSRC=2000

AT$PADTO=1

AT$HOSTIF=2 AT$ACTIVE=0

AT&W

AT+CGDCONT=1,”IP”,”TCEQ.CCS”,,0,0

AT%CGPCO=1,”[email protected],TCEQ12”,0 (xx = the assigned modem channel/IP number-remove this comment)

AT&W

AT%CGPPP=1

AT$NETMON=15,1,0,1

AT$AREG=2

AT&W AT$EVTIM1=43200

AT$STOATEV=1,AT$RESET

AT$EVENT=10,0,12,1,1

AT$EVENT=10,3,44,1,0

AT&W

31

To send the previously saved text file, select Transfer�Send Text File while connected to the

modem. Select the file and follow the prompts.

As each command is executed, an “OK” response should appear. After the script is finished,

power off the modem and insert the SIM Card and connect the antenna. Turn power back on.

This can be done while still connected with the serial cable and logged in with Hyperterminal.

After powering on the modem, the AT-Command Interpreter ready may appear. Type the

following and press enter:

ATX4 OK response

AT&W OK response

AT$RESET (This command will disappear and the modem will act as if it was power cycled)

After some seconds, AT-Command Interpreter ready followed by LISTEN 10.200.4.XX (where XX is the network identification) should appear. If the service for the modem has been

activated, the green LED should be solid. Type AT+CREG? and see the response.

AT+CREG?– returns two numbers 0,n where n = 0 = not reg, not searching 1 = reg on home network 2 = not reg, but searching 3 = reg denied 4 = unknown 5 = reg, roaming

If a tower is found, it should respond with +CREG: 0, 1. To test if communicating with a Zeno

3200, contact someone at TCEQ with access behind their firewall. Access Hyperterminal, and

setup for a TCP/IP(Winsock) connection. Enter the network address such as 10.200.4.XX where

XX is the number assigned to the modem in the script. If the Zeno 3200 responds then the

modem should be ready to go. Power down modem and put into service.

Do the same for other modems, but make sure to change channel/IP number in the script.

Here are some other modem commands to help determine activation:

AT%BAND=1,16 --this command forces the modem to seek American tower to transmit at 850

MHz

AT%BAND=1,31 – this command allows the modem to roam to any tower

To get information on signal strength:

AT+CSQ Will return the signal strength (do not type ?)

+CSQ: 10,99 Receive signal strength = 10, -93 dBm

32

See reference #2 regarding the modem AT command set to know what each possible return

means.

If you can not see characters on the screen type ATQ0

If you still cannot see characters on the screen type ATE1V1

Troubleshooting an Enfora Modem:

Problem: After powering on, the green LED flashes continuously.

Solution: Is the SIM card inserted or inserted correctly? Make sure to determine coverage area

from wireless provider and check that service has been activated and SIM card is valid. Also

connect external antenna.

Problem: Modem responds with an “OK” to AT&F and AT&W, but an “ERROR” with most

other commands.

Solution: Make sure the serial cable has no shorts and is wired as directed.

Problem: No signs of any communication with modem.

Solution: Is power connected correctly? Is amber LED solid after turning on power from DC

power supply? Correct voltage range applied? Communicating with correct serial cable? Correct

COM port setting on host computer? Communication settings as instructed? Was the baud rate

previously changed on modem and not documented?

Problem: Errors were received while trying to send script file.

Solution: Make sure power is on to modem and with the correct polarity. Make sure proper

driver for serial connection is installed on the computer if applicable and check that the

connection is valid. Repeat steps from the beginning and try again.

Problem: Modem out in field for sometime, can no longer respond.

Solution: Test modem with another available SIM card. If it works with different SIM card,

replace SIM card.

33

Reading Resistor Color Codes

The above is a color code table from the University of Pennsylvania. A resistor is a device that

resists the flow of charge. The unit of resistance is the ohm, pronounced om with a long o.

As you can see, resistors are read by the use of two significant digit colors, one multiplier and

one tolerance color. Think of the multiplier as the number of 0's stuck on the end. For example,

just put 3 0's after the 27 below. Note that the K stands for kilo or thousand. You will also see

Meg in the instructions. It means million. So brown, violet, green means put down a 4 then a 7

then 5 0's, or 4700000 which means 4,700,000 or 4.7Meg ohms.

The board also uses variable resistors for offset, bass, treble and volume. They usually have their

values printed on them, but can also have a code number that works like the resistor code. For

example, 103 means put a 1 down, then a 0, then 3 more 0's, which gives 10000 ohms or 10K

ohms.

34

Setting up an ozone analyzer Teflon sampling tube (1/8” ID X ¼”OD) exposed to ambient atmosphere and should be

protected from rain using a rain guard built by PVC pipes. Inside the enclosure it should be

insulated to avoid condensation of water and connected to an external filter. The external filter

should be replaced for every 45 days or when dirty to avoid entering of particulate matter into

the analyzer. The external filter should be connected to the sample port of the calibrated Dasibi

1008 or API ozone analyzer. Connect the positive and negative terminals at the back of the

ozone analyzer to channel 2 on the zeno data logger for transmission of 5 minute ozone

concentrations to TCEQ LEADS system.

Checks and troubleshooting during a site visit:

1. Check for water condensation in the tubing. If water is found replace the tubing,

filter and the ozone analyzer.

2. Check the filter in the external filter holder, if dirty replace with a new filter. In case

of API open the ozone analyzer and check for the internal filter, if dirty replace with a

new filter.

3. Connect the laptop to the zeno datalogger and cross check the ozone reading

recorderd by zeno datalogger and the concentration measured by the ozone analyzer.

If the offset is more than 2 or 3 ppb check the terminal connections at the back of the

ozone analyzer and the zeno datalogger. Also check the grounding connection of

zeno datalogger.

4. Perform the leak check by closing the sample port for both dasibi and API ozone

analyzers.

1. In case of Dasibi ozone analyzer the flow should drop to ‘0’ l/min and in case of

API Teledyne the flow should drop to ‘0’ and the pressure should also drop to

nearly 3 to 4 HG-A

If the analyzer fails to pass the leak check replace it with a new calibrated ozone

analyzer.

5. If a dasibi ozone analyzer is displaying negative values replace it with a new

calibrated ozone analyzer.

6. In case of a “photo reference warning” for an API Teledyne analyzer perform the

following steps:

1. Disconnect the sample line and open the ozone analyzer.

2. Using the <TST > button on the front panel to display ‘O3reference’ value.

3. Adjust the potentiometer located on the end panel of the UV lamp bench to till the

‘O3reference’ value is around 4200 MV.

7. In case of a “Lamp stability warning” adjust the UV lamp on the lamp bench till the

‘O3reference’ value is around 4200MV.

8. If a “Sample flow warning” is displayed on an API Teledyne ozone analyzer, check

the external filter and internal filter if dirty replace. Check for the sample tube for

bents or insects. If the filters and sample tube are clean replace with a calibrated

ozone analyzer.

35

9. If the monitor displays an “Analog cal warning”, the analog output channels should

be calibrated. The steps to be followed are:

37

Calibration a Dasibi ozone analyzer:

The ozone analyzer should be calibrate checked in the lab before taking to the field. It should be

turned on for at least an hour before following the calibration steps. This is necessary so that the

UV Lamp can obtain operating temperature. Pumps and valves can be off.

The steps for calibration of a dasibi ozone analyzer are:

Setting up ozone analyzer for calibration

1. Connect the scrubber to a particulate matter filter and then to inlet.

2. Connect one ozone output manifold to inlet of 1008-PC

3. Connect second output to another monitor to be calibrated.

Note: Make sure each connection is firmly attached to each port for air flow.

After connections are set properly, set the mode to ‘Operate’ and turn on the 1008-PC and the

other monitor to be calibrated. Set the switch next to the thumbwheel to ‘Auto’

Note: Make sure to allow each instrument being calibrated to run for at least an hour so the lamp

and other elements inside reach operational temperatures. The lamp is the main element that

needs to be warm, so the pumps can be off

The instrument will be tested to concentrations of 400, 300, 200, 90, 50, and 0 ppb. Start with

400 ppb and decrease.

Note: For 0 ppb, make sure to turn the ozone generator switch to ‘off’ and switch from ‘Auto’ to

‘Manual’ mode, or else sporadic ozone readings may result.

Note the response time of each instrument; it should obtain within 90% of the value within 5 to

10 minutes. Run each concentration for at least 30 minutes. At 0-ppb, the instrument should

within 1 or 2-ppb of the offset value that is set on the D/A board.

Record the number reached after 30 minutes; if not within at least 90% within 10 minutes,

disconnect monitor and troubleshoot for leaks or other possible problems.

Rule of Thumb � If low readings recorded, but linear or same percentage difference, it is likely to be a

solenoid problem.

� If non-linear results recorded at high or low end, then the scrubber is bad.

1008-PC 400

300 (298)

200

90

1008-RS

370

281

186

82

%

92.5

94.2

93.0

91.1

38

With a new scrubber: It is necessary to ‘condition’ the scrubber by having a high amount of ozone (400 ppb)

exposed to it for at least an hour. This will help the ozone monitor have a better response time

and a more accurate reading.

Performance checks for an ozone analyzer:

Turn on the ozone analyzer for an hour to warm up the UV lamp before performing the checks.

(1) SAMPLE FLOW CHECK

� Make sure the pump is on and then tap the analyzer flow meter to make sure the float is

not stuck.

� The flow meter should read about 2 Liters/minute.

� Even though the instrument flow independent, flow should not be <1.5 L/min or >3.5

L/min.

� The flow rate can be further validated using a flow meter that corrects for temperature

and pressure.

(2) SPAN CHECK

� Turn the mode switch to SPAN.

� Record the displayed value.

� The digits must read 30.8 and the last two numbers dependent on what zero offset has

been set in the instrument. To see the thumbwheel setting, remove the cover and look at

the D/A Board.

(3) RECORDER SPAN CHECK

� Turn the mode switch to SPAN.

� Take a voltmeter, set it to VDC (select minimum value), and touch the Red lead to (+)

and the Black lead to (-) at the rear of the instrument.

� The voltmeter should read 0.800V or 80% of full scale. If not, adjust to the proper value

by turning the “Analog Span” at the front of the instrument.

� Check recorder output to see if it matches display.

� Sometimes at the higher end, the output voltage may not match the display. For example,

one might see 0.400 on the display, but 0.396V at recorder terminal with a voltmeter. Use

the following procedure to adjust output voltage variation:

� Move operator switch to “Span”. The value 30809 will appear if “zero” offset

thumbwheel on the D/A Board is set at ‘9’.

� Adjust output voltage to 0.800V first.

� Open the unit, and adjust the “zero” offset to “0”. Set the LSD thumbwheel to “400”.

Check voltage output to see how close it is to 0.400V. Adjust analog span pot on front

panel of monitor accordingly.

� Adjust LSD thumbwheel to some other values like 2 or 3. It is better to adjust the span

pot on the upper end of the scale to improve the readings at the lower end.

� Return the “Zero” offset to chosen preset value.

39

(4) ZERO CHECK

� Set the mode switch to ZERO.

� The front panel display should read 00.000

� Take a voltmeter, set it to the minimum VDC range, and touch the Red lead to (+) and the

Black lead to (-).

� The voltmeter should show 0V.

� If not adjust, span pot on the right hand side of “D/A” Board.

(5) CONTROL FREQUENCY CHECK

� Set the mode switch to CONT/PRESS.

� Set the T/P switch to OFF.

� Record the value. It should be 500 kHz, or very close to 50.000 on the display.

(6) SAMPLE FREQUENCY CHECK � Mode switch set to SAMP/TEMP.

� T/P switch set to OFF.

� The value should be above 35.000

(7) ADJUSTING LAMP FREQUENCY

� Loosen the two screws at top right hand corner of instrument. Gently push the lamp

forward to increase frequency; pull out to decrease lamp frequency.

� Note: Use a plastic pen or some other insulated tube to push or tug the lamp in or out of

the UV lamp housing. Do not pull the lamp out while instrument is on since UV is

harmful to the eyes.

� If the lamp frequency does not change much after adjusting, try cleaning the optics tubes.

If value does not change much, then it may be time for a new UV lamp. It is

recommended that the lamp frequency not fall below 30 since this could generate a

noisier ozone reading.

(8) TEMPERATURE CHECK

� Disconnect all gas lines from back panel. Ozone monitor must be warmed up (about an

hour).

� Set mode switch to SAMP/TEMP.

� T/P switch set to ON.

� Analyzers PUMP switch set to OFF.

� VALVE switch set to OFF.

� A value will appear in Celsius.

� The display should read about 30 C.

(9) PRESSURE CHECK

� Disconnect all lines from back panel.

� Mode switch set to CONT/PRESS.


� Analyzers PUMP switch set to OFF.

40

� Compare displayed value with a barometer or another electronic instrument (like ozone

monitor). The value on the ozone monitor is in Pascal. The value should be appropriate to

the area located. Weather websites can also provide a value.

(10) SYSTEM LEAK CHECK

� Mode switch set to CONT/PRESS.


� Analyzer PUMP switch set to ON.

� VALVE switch set to ON.

� Analyzer flow within an acceptable range (1.5 L/min to 3.5 L/min).

� Plug the INLET with your finger. The flow should drop to zero within about a minute.

� If it does not reach zero as indicated on the rotameter, there is a leak in the system.

� Check internal plumbing connections to scrubber, valve, or other points. Check optics

tubes to see that each is screwed firmly and that seals in place if removed for cleaning.

Calibration of API- Teledyne ozone analyzers:

Connect one of the ozone outputs of 1008-PC to the sample port of the API Teledyne. Note:

Make sure each connection is firmly attached to each port for air flow.

The steps to be followed for calibration are:

The O3 span concentration is the concentration of the input gas. The ozone analyzer is

calibrated for 400, 300, 200, 100 and 0 ppb.

41

NOx analyzer

The NOx analyzer is setup for continuous monitoring of oxides of nitrogen during the ozone

season. The instrument is set for 5 minute averages. The data is downloaded twice a month

from the internal memory of the analyzer using TEI for windows. Hourly NOx concentrations

are calculated using the 5 minute averages.

Calibration of 42C NO-NOz-NOy Analyzer (trace Level)

Instruments required

42C NO-NOz-NOy Analyzer

146C Dynamic gas calibrator

The connections are made as shown in the figure below

PRE-CALIBRATION Follow the steps below before calibrating the Model 42C Trace Level:

1. Be sure the ozonator is on. If the ozonator is not on, choose Instrument Controls

from the Main Menu. From the Instrument Controls menu choose Ozonator. Press the ENTER pushbutton to turn the ozonator on. Press the RUN pushbutton to return to the

Run screen.

42

2. Allow the instrument to warm up and stabilize.

3. Be sure the instrument is in the auto mode, that is, NO, NO2, and NOx measurements are

being displayed on the front panel display. If the analyzer is not in the auto mode, choose

Instrument Controls from the Main Menu. From the Instrument Controls menu Choose

Auto/Manual Mode. Use the ↑ pushbutton to select auto mode (NO/NOx) and press ENTER. Press the RUN pushbutton to return to the Run screen.

4. Select the NO, NO2, and NOx ranges and set the averaging time. It is recommended that

a higher averaging time be used for best results (around 300 secs). Choose “averaging

time” from the main menu, use ↑ arrow to increase it to 300 secs.

CALIBRATION

1. Introduce zero gas to the SAMPLE bulkhead at a pressure of around 30psi.

2. Allow the analyzer to sample zero air until stable NO, NO2, and NOx responses are

obtained. After the responses have stabilized (the readings should be stable at least for

one minute). Choose Calibration from the Main Menu then choose Calibrate Zero. The

Calibrate Zero screen displays the NO, NO2 and NOx readings. Press ENTER to set the

NO, NO2 and NOx readings to zero. The message “Saving Parameters(s)” is briefly

displayed to indicate that the background readings have been set to zero. The analog

outputs also go to zero. Press the RUN pushbutton to return to the Run screen.

3. Turn on the source of NO calibration gas of approximately 80% of the fullscale range and

a pressure of 20psi.

(146 C)

4. Step 3 can be performed with the help of the 146C Dynamic gas calibrator. Make sure

that the mode is on “Service Mode”. To calibrate go from a higher concentration to a

lower concentration of NO, this can be done by setting different spans in the 146C.

From the Main Menu

• Use the ↑ and ↓ pushbuttons to select Gas A (The channel to which NO is

connected). Press enter.

• Use ↓ to select span 1

• Select the “Conc ppm” and press enter

• Select “setting” and enter a value of .400 ppm. Press enter

Similarly different spans can be set to different percentages of concentration. The table

below can be a reference.

43

5. From the Run Menu

• Use → arrow to choose NO A, press enter

• Use ↓ and → arrows to select “Span 1”, press enter

• Press Run.

6. Allow the analyzer (42C) to sample the NO calibration gas until the NO and NOx

responses have stabilized. At least one minute of stable readings is required. (30 to 45

mins). Note down the readings of NO, NO2 and NOx.

7. After the responses have stabilized, choose Calibration from the Main Menu. From the

Main Menu choose Calibrate NO. The second line of the Calibrate NO screen displays

the current NO reading. The third line of the display is where the NO calibration gas

concentration is entered. Use the ← and → pushbuttons to move the cursor right and left

and use the ↑ and ↓ pushbuttons to increment and decrement each digit. (ex: For span 5

the NO channel should be set to 400 ppb.) Press ENTER to calibrate the NO channel to

the NO calibration gas. The message “Saving Parameter(s)” is briefly displayed to

indicate that the NO span coefficient has been calculated, stored, and is being used to

correct the NO reading.

8. Press the MENU pushbutton to return to the Calibration menu and choose Calibrate

NOx. Verify that the NOx calibration gas concentration is the same as the NO calibration

gas concentration plus any known NO2 impurity. Use the ← and → pushbuttons to

move the cursor right and left and use the ↑ and ↓ pushbuttons to increment and

decrement each digit. (Ex: For span 5 the NOx channel should be set to 400 ppb.) Press ENTER to calibrate the NOx channel to the NOx calibration gas. The message “Saving

Parameter(s)” is briefly displayed to indicate that the NOx span coefficient has been

calculated, stored, and is being used to correct the NOx reading. Press the RUN

pushbutton to return to the Run screen.

9. Repeat Steps 5 through 8 for different spans and record the values

Span Name Concentration (ppb)

Span 5 400

Span 4 300

Span 3 200

Span 2 100

Span 1 50

Span 0 0

44

Table 1: Readings for the monitor with Sl No:

10. To measure the efficiency of the NO2-to-NO converter in the Model 42C Trace Level as

well as calibrate the NO2 channel of the analyzer, a known calibration source of NO2 is

required. We use a dynamic NO2 generation system such as the Model 146 generator for

this purpose.

11. We use the Gas Phase Titration (GPT) for the calibration of NO2.

(146C) Use the following steps to set the (GPT):

• Press “RUN” to enter the run screen.

• Use ↓ and ↑ pushbuttons to scroll to the ozone/perm line.

• Use → and ← pushbuttons to select the desired ozone level (in our case Use level

2)

Note: The concentration of ozone should be between 0.5 to 1 ppm, and level 2

generates a concentration of 0.730 ppm which is OK.

12. Allow the Model 42C Trace Level to sample the known NO2 concentration until the NO,

NO2, and NOx responses have stabilized. After the responses have stabilized, choose

Calibration from the Main Menu. From the Calibration menu choose Calibrate NO2.

The second line of the Calibrate NO2 screen displays the current NO2 reading. The third

line of the display is where the NO2 calibration gas concentration is entered. Set the

NO2 calibration gas concentration to the NO2 concentration. Use the ← and →

pushbuttons to move the cursor right and left and use the ↑ and ↓ pushbuttons to

increment and decrement each digit. Press ENTER to calibrate the NO2 channel to the

NO2 calibration gas. The message “Saving Parameter(s)” is briefly displayed to indicate

that the NO2 span coefficient has been calculated, stored, and is being used to correct the

NO2 reading.

13. The Model 42C Trace Level does a one point converter efficiency calculation,

corrects the NO2 reading for converter inefficiency and then adds the corrected NO2 to

the NO to give a corrected NOx signal.

14. It is important to realize that the converter efficiency correction is valid only when the

Model 42C Trace Level is in the automatic mode. If the Model 42C Trace Level is used

in the manual mode, the converter efficiency correction factor is interpreted as having a

value of 100%, and is used as such in concentration calculations.

Span Conc of NO

(ppb)

Flow NO NO2 NOx

Span 5 400 2000 390 -0.7 383

Span 4 300 2000 317 -13 304

Span 3 200 3000 198.2 -1.6 196.5

Span 2 100 3000 97.5 -2.1 95.4

Span 1 50 3870 49.0 -2.3 46.7

Span 0 0 3000 -0.3 -4.2 -4.5

45

Span Conc of NO

(ppb)

Flow NO NO2 NOx

Span 5 400 2000 6 441 447

Span 4 300 2000 1 320 321

Span 3 200 3000 0 212 212

Span 2 100 3000 -4 96.5 96.1

Span 1 50 3870 -0.6 43.8 43.2

Span 0 0 3000

46

References-Wind Speed/Wind Direction

Meteorological Monitoring Guidance for Regulatory Modeling Applications, EPA-454/R-99-

005, U.S. ENVIRONMENTAL PROTECTION AGENCY, Office of Air and Radiation

Office of Air Quality Planning and Standards, Research Triangle Park, NC 27711, February

2000

Model 03002 Wind Sentry, February 1999, P/N:03002-90, R.M. Young Company.

References-Enfora Modem

Enfora GSM1208 Quad-Band SA-G User Manual Revision 1.00, 06/03/04, Document

Control ID: GSM1208PB001MAN

Enfora Enabler-IIG GSM/GPRS Radio Modem AT Command Set Reference 1.02, April 15, 2005, Document Control ID: GSM0107PB001MAN Enfora Enabler II-G Quad Band GSM/GPRS Modem Integration Guide 1.02, 02/14/05,

Document Control ID: GSM0108PB001

Internal Application Note:GSM2308IAN0022 Using HyperTerminal to Send Text Scripts to the Enfora L.P. Modem Revision 1.00, c2004. Windows Hyperterminal help files. Serial wiring diagrams: RS-232 - overview of RS-232 standard; http://www.hw-server.com/rs232

References-General

Search Network Standard Operating Procedures, Revision 1, 07/31/02. Published online by

Atmospheric Research & Analysis, Inc. (http://www.atmospheric-research.com/)

Series 1008 U.V. Photometric Ozone Analyzer, Operating and Maintenance Manual, c1990,

Dasibi Environmetal Corporation.

Zeno 3200 User Manual, Version 2.02, 27 June 2003, P/N: 0302116012, Revision B, Coastal

Environmental Systems, Inc. (http://www.coastalenvironmental.com)

Instruction Manual Model 400E Ozone Analyzer, 04316, Revision C. August 22, 2005

47

Zeno 3200 Board Layout

48

Serial Cable for Zeno 3200 to Enfora GSM 1208 Modem

Site Operation Manual for a Typical Air Monitoring Site

Environment

Transcript of Site Operation Manual for a Typical Air Monitoring Site