1620A Digital Thermometer-Hygrometer

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The most accurate temperature and humidity graphical data loggers on the market

The Fluke 1620A (DewK) thermo hygrometer and humidity monitor measures temperature to ± 0.125 °C and humidity to ± 1.5 % on two channels, and displays it on a big, clear screen. Ethernet, wireless (optional), or RS-232 will allow you to network as many Fluke 1620s (DewKs) as you’d like. And the LogWare III software will allow real-time logging of multiple Fluke 1620s (DewKs), data storage to your computer and seamless integration with MET/CAL® software.

Thermo hygrometer features at a glance:

  • Superior accuracy
  • Network enabled
  • Powerful logging and analysis tools
  • Two interchangeable calibrated sensors
  • Huge memory
  • Upgraded software

Two types of sensors are available.

The high-accuracy sensor (“H model) reads temperature to ± 0.125 °C over a calibrated range of 16 °C to 24 °C. Relative humidity readings are to ± 1.5 % RH from 20 % RH to 70 % RH.

The standard-accuracy sensor (“S model) reads temperature to ± 0.25 °C over its calibrated range of 15 °C to 35 °C. Relative humidity readings are to ± 2 % RH from 20 % RH to 70 % RH.

All Fluke 1620A (DewK) thermo-hygrometer sensors come with NVLAP accredited certificates of calibration for both temperature and humidity, complete with data and NIST traceability.

Specifications
Operating Range
 0 °C to 50 °C (32 °F to 122 °F); 0 % RH to 100 % RH
Calibrated Temperature Accuracy (“H” Model)
 ± 0.125 °C from 16 °C to 24 °C
 (± 0.225 °F from 60.8 °F to 75.2 °F)
Calibrated temperature Accuracy (“S” Model)
 ± 0.25 °C from 15 °C to 35 °C
 (± 0.45 °F from 59 °F to 95 °F)
Calibrated RH Accuracy (“H” Model)
 ± 1.5 % RH from 20 % RH to 70 % RH
Calibrated RH Accuracy (“S” Model)
 ± 2 % RH from 20 % RH to 70 % RH
Expected Extrapolated Performance (Uncertified)
 ± 0.5 °C (± 0.9 °F) outside calibrated range
 ± 3 % RH outside calibrated range
Delta Temperature Accuracy
 ± 0.025 °C for ± 1 ° changes within 15 °C to 35 °C
 (± 0.045 °F for ± 1 ° changes within 59 °F to 95 °F)
Temperature Resolution
 User selectable up to 0.001 °C/°F on front-panel display (0.01° recorded)
Delta Humidity Accuracy
 ± 1.0 % RH for ± 5 % changes within 20 % RH to 70 % RH
RH Resolution
 User selectable up to 0.01 % on front-panel display (0.1 % recorded)
Inputs
 Up to two sensors, measure temperature and relative humidity, detachable, cable-extendable, interchangeable, self-contained calibrations, may be assigned unique 16-character identifications
Display
 240 x 128 graphics monochrome LCD, displays password-protected temperature/humidity data graphically, numerically, and statistically (one or both channels); 16 pre-defined, user-changeable screen setups
Memory
 400,000 typical individual date/time-stamped readings