3M 48N user manual Appendix a Specifications, Measurements

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Appendix A

Appendix A: Specifications

Approved 9-Volt Batteries

Appendix A: Specifications

Measurements

∙Globe Temperature, Dry Bulb Temperature, Wet Bulb Temperature, % Relative Humidity, and WBGT Index

∙Temperatures given in Celsius or Fahrenheit

∙Index (displayed stay time with selected index): ACGIH TLV, U.S. Navy PHEL Charts, Flag Conditions for U.S. Navy/Marine Corp. Ashore

Data Logging mode and Event logging mode

Data logging mode records and prints all measurements at user selected interval of 1, 2, 5, 10, 15, 30, or 60 minutes.

Event logging mode (1 second record) 128K bytes of data memory.

Languages

English, French, Spanish, Italian, German

Sensors

Dry Bulb Sensor- 1000 Ohm Platinum RTD

∙Accuracy and Ranges: +/-0.5 from 0°C to 120°C (+/-0.9°F from 32°F to 248°F)

Waterless Wet Bulb (Humidity) Sensor

∙Accuracy and Ranges: Expanded measurement uncertainty of 1.1°C (k=2) between 0°C and 80°C (32°F and 176°F)

Globe Sensor- 1000 Ohm Platinum RTD

∙Accuracy and Ranges: +/-0.5 from 0°C to 120°C (+/-0.9°F from 32°F to 248°F)

Relative Humidity Sensor - Integrated circuit with capacitive polymer sensor

∙Accuracy and Ranges: +/-5% from 20 to 95% (non-condensing)

Operating Temperature Range

Sensor Assembly: -5°C to +100°C

Electronics: -5°C to 60°C

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.