DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1....

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DLS VERIFICATION TESTING FIELD TESTS TO CHECK DLS OPERATIONS

Transcript of DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1....

Page 1: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

DLS VERIFICATION TESTING

FIELD TESTS 

TO

CHECK DLS OPERATIONS

Page 2: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

DATA LOGGER SYSTEMSDATA LOGGER SYSTEMS • Data LOGGER SYSTEMS (DLS) ARE ELECTRONIC SYSTEMS USED TO: 

1. MONITOR MATERIAL APPLICATION CONDITIONS 

i.e. ambient temperatures        

2. PROVIDE REAL‐TIME DATA OF ACTUAL APPLICATION PARAMETERS 

i.e. pounds of glass beads put down  

3. ALLOWS STRIPERS TO MAINTAIN APPLICATION

RATES

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STRIPING TRUCK WITH DLS SYSTEMSTRIPING TRUCK WITH DLS SYSTEM

Page 4: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

ELECTRONIC CONTROL BOX

Page 5: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

OHIO DOT DLS INFORMATIONOHIO DOT DLS INFORMATION

THE OHIO DOT DLS TECHNICAL GUIDE CAN BE  FOUND AT: 

O:\TRAFFIC\Markings Summits\Markings Summit 2007\Markings Summit Districts

THE OHIO DOT DLS TECHNICAL GUIDE CONTAINS INFORMATION

THAT INCLUDES:THAT INCLUDES:

1. EXAMPLES OF DLS DATA REPORT FORMS

2. HOW DATA IS ENTERED INTO A DLS REPORT

3. HOW TO READ A DLS REPORT

4. DLS REPORT SECURITY

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SENSORS

SENSORS SUCH AS TEMPERATURE SENSORS, LOCATED ATAPPROPRIATE LOCATIONS ON THE STRIPING TRUCK, PROVIDETEMPERATURE DATA.

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GAUGES

GAUGES PROVIDE DATA AND HELP MONITOR THE TEMPERATURE OF STRIPING MATERIAL IN THE TANKS.

Page 8: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

GLASS BEAD TANK LOAD CELLS

GLASS BEAD TANKS ARE MOUNTED ON LOAD CELLS. LOAD CELLSGLASS BEAD TANKS ARE MOUNTED ON LOAD CELLS. LOAD CELLS ARE THE BASIS OF BEAD WEIGHT CALCULATIONS.

Page 9: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

DLS ELECTRONIC DATA SHEET1. DLS  DATA  IS AUTOMATICALLYRECORDED AND STOREDRECORDED AND STORED ELECTRONICALLY  

2. DLS DATA INCLUDES:2. DLS  DATA INCLUDES:

*SENSOR DATA 

*DISTANCE DATA

*AMBIENT CONDITIONSAMBIENT CONDITIONS

*MATERIAL QUANTITIES

3 VERIFICATION TEST3. VERIFICATION TEST RESULTS WILL BE COMPARED TO CONTRACTORS ELECTRONIC SHEET DATA

Page 10: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

FIELD CHECKING A DLS SYSTEMCalibration Sticker Check 

1. CHECK FOR THE PRESENCE OF:

THE ANNUAL CALIBRATION STICKER

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CALIBRATION STICKEREVIDENCE OF ANNUAL CALIBRATION SHALL BE A SIGNED ANDEVIDENCE OF ANNUAL CALIBRATION SHALL BE A SIGNED AND

AFFIXED TO THE INSIDE OF THE DRIVER’S DOOR OF EACH

STRIPING TRUCKSTRIPING TRUCK.

Page 12: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

YEARLY CALIBRATIONYEARLY CALIBRATION

1. ACCORDING TO THE OHIO DOT CONSTRUCTION AND 

MATERIAL SPECIFICATION MANUAL, ITEM 641, SECTION

641.03, EACH DLS SHALL HAVE AN ANNUAL CALABRATION.

2. ITEMS TO BE CALIBRATED INCLUDE:

‐ALL MECHANICAL AND ELECTRICAL COMPONENTS

‐SOFTWARE

FUNCTION AND OUTPUT‐FUNCTION AND OUTPUT

3. CALIBRATIONWILL BE CONFIRMED BY MANUFACTURER.3. CALIBRATION WILL BE CONFIRMED BY MANUFACTURER. 

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Field Checking a DLS SystemThe Plate TestThe Plate Test

1. Place  an aluminum plate  around   24 in. x 8 in. under the paint gun of the striping truckpaint gun of the striping truck. Aluminum plates are supplied through the Office of Materials Management (OMM), Chemical SectionSection. 

2. Allow the striping truck to stripe over the plate in order to  get a stripe of the desired thickness 

th l ton the plate. 

3. Send the striped plate to  the OMM , Chemical Section for film thickness testing.

4. Send the contractors’ DLS average mils applied data as comparison for the film thickness testing results.

Note: Be careful  not to damage the

paint stripe on the plate.

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Field Checking a DLS SystemThe Plate TestThe Plate Test

Page 15: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

Field Checking a DLS SystemThe Bead Weight TestThe Bead Weight Test

1. Check and record the bead weight on the DLS electronic data sheet W1.

2.      Obtain an object of known weight, minimum  of twenty  (20) pounds, i.e. a fifty pound bag of glass beads.

3.     Place the weight on top of the

bead tank. Keep the weight  in position on top of the tank and check and record the new weight W2, on the DLS electronic data sheetsheet.

4. Subtract W1 from W2 to get the known weight of the object used. 

W2 – W1 = weight of the object of known weight usedknown weight used.

Correct test results confirms the

proper operation of the bead tank

load cells as well as the accuracy ofload cells as well as the accuracy  of

the data on the spreadsheet.

Page 16: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

Field Checking a DLS SystemTh B d W i h TThe Bead Weight Test

Page 17: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

Field Checking a DLS SystemThe Infrared Thermometer Test 

1. Use a hand‐held Infrared Thermometer to measure road surface temperature, ambient temperature, and/or striping material temperature.

2. To operate the infrared thermometer, follow the manufacturer’s operating proceduresprocedures.

3. Compare temperature readings to the data on the appropriate  DLS electronic  screen.

4. Temperature readings on the DLS screen should be within +/‐/5%  of the thermometer readings.    

Page 18: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

Field Checking a DLS SystemTh I f d Th TThe Infrared Thermometer Test 

Page 19: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

Field Checking a DLS SystemThe Humidity Test 

1. Measure the ambient humidity with the use of a Sling Hydrometer.

2. To operate the sling hydrometer follow thehydrometer, follow the manufacturer’s operating procedures.

3. Compare humidity readings to the data on the appropriate  DLS electronic  screen.

4. Humidity readings on the DLS screen should be within +/‐5%  of the hydrometer yreadings.    

Page 20: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

Field Checking a DLS SystemThe Humidity Test 

Page 21: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

Field Checking a DLS SystemThe Distance Traveled Test 

1. Testing  the Distance Traveled d h DLS El i Ddata on the DLS Electronic Data Screen can be done using a distance wheel like the one shown in the picture.

2. To operate the distance wheel, follow the manufacturer’s operating procedures.

3. Compare distance readings to p gthe data on the appropriate  DLS electronic  screen.

4. Distance readings on the DLS screen should be within +/‐ 5%screen should be within +/ 5%  of the distance wheel readings.

5. DLS distance data can also be checked using mile markers and an odometeran odometer.  

Page 22: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

Field Checking a DLS SystemThe Distance Traveled Test 

Page 23: DLS VERIFICATION TESTING · 2009-07-13 · Field Checking a DLS System The Bead Weight Test 1. Check and record the bead weight on the DLS electronic data sheet W1. 2. Obtain an object

SUMMARYSUMMARY• THE SPECIFIED ANNUAL CALIBRATION OF DATA LOGGER SYSTEMS (DLS) IS THE 

PRIMARY CHECK OF THE OPERATION OF THE SYSTEMS.

• THE TESTS DESCRIBED IN THIS PRESENTATION ARE MEANT TO BE DONE IN A RANDOM FASHION TO:

1. VERIFY PROPER OPERATION AFTER CALIBRATION

2. DETERMINE IF THE SYSTEM IS THE CAUSE OF SUSPICIOUS

DEVELOPMENTS IN THE FIELD APPLICATION OF STRIPING MATERIAL

• ONE OR ALL OF THE TESTS MAY BE USED TO CHECK DLS OPERATION

• THE DEVELOPMENT AND IMPLEMENTION OF THESE TESTS WILL BE DONE IN  COOPERATION BETWEEN THE DISTRICTS AND THE OFFICE OF MATERIALS MANAGEMENT, CHEMICAL SECTION.

• CONTACT: MARIA KERESTLY/RANDY DAVIS   614‐275‐1349