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Digi-Sense Professional Thermohygrometer

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Compact, lightweight design for accurate measurements anywhere!

Ergonomic handheld thermohygrometers provide a fast and convenient way to accurately spot-check relative humidity and temperature in a wide range of environments and applications. When accuracy is a must in the field, in the lab, or on the process floor, these meters deliver dependable results every time!


  • Reliable measurements, guaranteed! Precalibrated to NIST-traceable standards
  • Large backlit LCD displays humidity, temperature, dew point, and wet bulb readings
  • Feature Min/Max readings and Hold function
  • User-selectable temperature readout in °C or °F
  • Integrated humidity and thermistor (NTC) temperature sensor
  • Auto power-off mode extends battery life

Additional features for Thomas No. 1197B54

  • Heavy-duty housing protects against knocks and jars
  • Absolute humidity measurements


  • HVAC
  • Industrial
  • Food industry
  • Educational
  • Laboratory
  • R&D


Humidity0 to 100% RH
Absolute humidity
0 to 500 g/m3,
0 to 218.5 gr/ft3
Temperature (NTC)–22 to 212°F (–30 to 100°C)
Temperature (T/C)
Dew point (calculated)–22 to 212°F (–30 to 100°C)
Wet bulb (calculated)32 to 176°F (0 to 80°C)
Temperature (NTC)0.1°F/C
Temperature (T/C)
Humidity±2% from 40 to 60% RH;
±3% from 20 to 40% RH and 60 to 80% RH;
±4% from 0 to 20% RH and 80 to 100% RH
Temperature (NTC)±1.8°F (1°C) from –4 to 140°F (–20 to 60°C);
±2.7°F (1.5°C) from –22 to –4°F (–30 to 19°C)
and 140 to 212°F (60 to 100°C)
Temperature (T/C)
Dimensions (L x W x H)117⁄8" x 3" x 2" (30 x 7.5 x 5 cm)
PowerOne 9 V battery
Accessories includedCarrying case, battery, NIST-traceable
certificate with data and uncertainties

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Digi-Sense Professional Thermohygrometer with NIST Traceable Calibration
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