3M 48N user manual Electronic sensor check, Performing an electronic sensor check

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14

Electronic Sensor

check

Electronic sensor check

Performing an electronic sensor check

Electronic sensor check

A verification module, Quest model 053-923, may be used to check the operation of the QUESTemp’s wet bulb, dry bulb, and globe. The purpose is to verify that the electronic components are within a specific range with known values and a known source. The temperature tolerances should be within +/-0.5oC.

Example of Verification module

NOTE: If the sensors are outside of the tolerances, this indicates the sensor alignment should be serviced off-site for calibration.

Performing an electronic sensor check

1. Ensure the instrument is reading in Celsius prior to your electronic sensor check.

To change the temperature setting, select Setup from the main menu. Then, either Fahrenheit or Celsius will appear on the screen. When selected, press I/O enter key to switch between settings. For more information, please refer to page 9, step 3.

2.Remove the top sensor bar, place to the side, and plug in the verification module into the center pins of the sensor housing.

3.Verify the measurement readings on the screen are within +/- 0.5°C tolerance to the

readings printed on the verification module label. Example below:

a. Wet Bulb (WB): 11.1°C b. Dry Bulb (DB): 45.3°C

c. Globe (G): 69.2°C

NOTE: Relative humidity (RH) is not valid on this instrument.

4.Once completed, remove verification module and place sensor bar back on the instrument. (Tighten down the two bolts.) Change the Celsius reading back to Fahrenheit. (Refer to step 1 a-b.)

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Contents Market Leader Contents List of Figures Iii Introduction QUESTempº 48N ModelGetting Started Up and Running overviewPlacing the QUESTempº 48N on the job site Keypad Operation Keys ExplanationTurning on, logging/capture an event, and turning off Index start-up screenIndicator arrow ∙ Numeric counterWaterless Wetbulb & Relative Humidity Sensor SensorsGlobe Thermometer Dry Bulb ThermometerWetBulb Globe Temperature Wbgt Stay Times/Rest Times IndiciesOperating QUESTempº 48N SetupSettings Explanation View Selecting Setup parameters 11 Selecting temperature setting and setupReset PrintRun Following measurements can be accessed on the display Displayed Items19 Battery & memory screen Screen 6 Index Stay Time/IndexData Logging 22 Navy PHELs screenElectronic sensor check Performing an electronic sensor checkSensor Alignment RH Sensor AlignmentLow RH Alignment screen Adjust % to 33% using up/down arrow 27 RH alignment with Low % examplePrinting Data/CommunicationsParallel 30 Sample printoutsApproved 9-Volt Batteries PoweringVolt Alkaline Battery Replacement Duracell MN1604Appendix a Specifications MeasurementsWeight QUESTemp 48N Block Model LCDHeavy Very Heavy TLV Work and recovery LightAppendix B Heat Exposure Tables Heavy Very Heavy Action LimitAcgih Clothing Corrections United States NavyPhel Curves Total Exposure Time in Hours Minutes United States Navy Flag Conditions for U.S. Navy/Marine Corp. Ashore Flag Degrees FFlag Degrees C Appendix C Accessories sold separately QT3X-BCCommunicating and Downloading in DMS Appendix D SoftwareDMS quick overview PortData Finder and quick reports 34 Communicating with the QT⁰ 48N and DMSQuick Report select 36 Quick ReportCalibration Customer serviceWarranty Contacting 3M InstrumentationAbout Us