3M 46, 44 user manual Appendix a Specifications

Appendix A

Appendix A: Specifications

Measurements

•Globe temperature, dry bulb temperature, wet bulb temperature, % relative humidity, WBGTin, WBGTout, WBGT weighted average (if 3 sensor sets), and Heat Index / Humidex.

•Temperatures given in Celsius or Fahrenheit.

•Index (QTº46 only): ACGIH TLV, U.S. Navy PHEL Charts, Flag Conditions for U.S. Navy/Marine Corp. Ashore, and EPRI

Data Logging

Records and prints all measurements at user selected interval of 1, 2, 5, 10, 15, 30, or 60 minutes. 128K bytes of data memory.

Languages

English, French, Spanish, Italian, German

Housing

Designed water resistant to a light rain or mist. If rain is frequent, best practice would be to remote the sensor bar and keep the instrument sheltered.

Size

Height 9.2in (23.5cm); Width 7.2in (18.3mm); Depth 3.0in (7.5mm)

Dimensions include mounted sensor assembly

Weight

2.6 lbs. (1.2 kg) with mounted sensor assembly

Sensor Types

Temperature: 1000 ohm platinum RTD

Humidity: Integrated circuit with capacitive polymer sensor

Accuracy

•Dry Bulb and Globe Temperature: +/-0.5°C between 0°C and 120°C

•Waterless Wet Bulb Temperature: Expanded measurement uncertainty of 1.1ºC (k=2) between 0ºC and 80ºC

•Relative humidity: +/- 5% between 20 to 95% (non-condensing)

Operating Temperature Range

Sensor Assembly: -5°C to +100°C

Electronics: -5°C to 60°C