DELTA CONTROLS - Advance Siam · DELTA CONTROLS CORP Engineered Sensors Œ For Difficult Services...
Transcript of DELTA CONTROLS - Advance Siam · DELTA CONTROLS CORP Engineered Sensors Œ For Difficult Services...
OPEN CHANNEL FLOW TRANSMITTERMODEL 872FM 2-WIRE 4-20mA WITH INTEGRAL DISPLAY
MODEL 671FM 2-WIRE 4-20mA WITH REMOTE CALIBRATIONFIELD PROVEN ULTRASONIC MEASURING TECHNIQUES
The Models 872FM AND 671FM are ultrasonic levelsensing devices used to transmit the flow rate of a liquid inan open channel.
The unit is positioned over the surface of the liquidupstream from a measuring weir or flume. A series of highfrequency sound waves are generated during the "send"portion of the cycle. The sound waves travel through theair space between the face of the Sender/Receiver (S/R)unit and the liquid surface. The sound waves strike theliquid surface, are reflected, travel back to the S/R unit,and are detected during the "receive" portion of the cycle.The time elapsing between "send" and "receive" ismeasured and corrected for speed of sound variations dueto temperature, and is used by the instrument to calculatethe crest level. The unit produces a 4-20mA signal that islinearly proportional to flow rate.
DELTA CONTROLS Corporation
TS 872FM
FEATURES
• Versatile � Measures Water, Sewage, and Slurries• Submergible to 100 Feet (30M); Gas-tight• Improved Personnel Safety for Hazardous Places such as
Sewers, Pump Pits, Covered Lagoons, Etc.• Remote Configuration and Calibration• Suitable for Most Flumes, and Weirs; also Custom
Linearization to User Supplied Tables.• Intrinsically Safe Classification Improves Safety and
Lowers Cost of Installation and Operation
APPLICATION
BASIC SPECIFICATIONS
Measurement Range: 1 to 8 feet (30 to 250 cm)Beam Angle: ±6° at the 3 dB down boundaryOutput: 4-20 mA analog, also RS485 on remoted unitBuilt-in Temperature Compensation: YesAccuracy: Better than 0.25% of maximum rangeSupply Voltage: 11-30 VDCAmbient Temperature: -40 to +140°F (-40 to +60°C)Housing: 4X Hoseproof and 6 SubmergibleWiring: Robust cable with a tough rubber jacket;
10 ft (3 M) basic, longer lengths optional.Calibration: Integral keypad (Model 872FM)
remote via RS485 (Model 671FM)Mounting Connection: NPT, Flange, or StemMaterials: PVC and 300 S.S.Typical Flow Elements:
Parshall and Palmer-Bowlus flumesRectangular, V-Notch and Cipolletti Weirs
OPTIONAL:Intrinsically Safe: CSA (CANADA), NRTL/C (USA)
Class 1, Division 1 & 2, Groups ABCDLinearization: To fit non-standard elementsReduced Head Room: To 4� (100mm)Ranges: Up to 50 feet (15M)
Model 872FM Integral Display2� NPT Mounting
Model 671FM StemMount, and Extended
S/R Unit
Wall BracketMounting
S/R Unit
DELTA CONTROLS CORPEngineered Sensors � For Difficult Services
585 Fortson StreetShreveport, La. 71107 - USA
MODEL NUMBERING SYSTEM
Voice: 318-424-8471Fax: 318-425-2421E-mail: [email protected] Site: http://www.deltacnt.com
00-87232A The most recent version of this document is available at http://www.deltacnt.com/00-87232.pdf
BASICTYPE - TRANSMITTER
MOUNTING - CABLELENGTH - OPTIONS
MODEL NO.: 872FM - 2NP - 10� - AA
M/N DESCRIPTIONAA NoneIS Intrinsically Safe (872FM only)
*ACF Frame For Across The Channel Instrument Mounting*PED Pedestal Over Channel Mount*WMB Mounting Bracket for Wall Or Ledge
*EL Extended Sensor InsertionCC 3/4" NPT Conduit Connection HubJB Gasketed Junction Box With T/S And RJ-11 Receptacle,
2 Each 1/2� Hubs, Use With Model 824 HandheldCET Linearization Curve For Other Primary ElementsZZ Other Requirements
* Used with �SC� Stem Mounting
M/N DESCRIPTION872FM INTEGRAL KEYPAD
671FM REMOTECOMMUNICATION
M/N DESCRIPTIONSC Stem Mounting
2NP 2� NPT Pipe Thread2FV 2� 150# FF PVC FlangeZZ Other sizes and types
Handheld CalibratorField Panel MountedRate and Calibrator
REMOTE CONFIGURATION INTERFACE
The Model 671FM is a 2-wire, 4-20mA, loop poweredinstrument. It also has an additional wire pair, whichconnects to a remoted calibrator such as a Model 824handheld calibrator, a Model 825 panel mountdisplay/calibrator, or a PC running under windows. Theremote unit communicates by RS-485 and can be locatedup to 4000 feet (1.25 KM) away from the transmitter. Asingle remoted calibrator unit can handle from 1 to 30transmitters. All information, including flow rate, isavailable at the calibrator without using the 4-20mA signal.
INTEGRAL KEYPAD/DISPLAY
The Model 872FM has a built-in display and keypad.Its one-piece simplicity makes it the best choice formany applications.
OVER THE CHANNEL SUPPORT FRAME
Note: Remote RS-485 Communicationmay be operated by a handheld calibrator,a panel mount display/calibrator, a flowtotalizer, or a PC (C/F for software), up to30 transmitters per loop.
FEET
RS-485RS-485
RS-485
Software Package FlowRate And Calibrator
Field Mounted Rate,Totalizer, and Calibrator
4-20 mA
RS-485