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RH1 Relative Humidity Meter With Memory

Precision hygrometer with datalogger
Measure climate humidity easily, fast and accurately with the RH1 relative moisture meter, optionally available with a PC-interface, software and printer.

How does it work?
Relative humidity is the amount of water vapor that exists in a gaseous mixture of air and water and is normally expressed as a percentage.

The relative humidity of an air-water vapor mixture can be estimated if both the measurement temperature and the dew point temperature of the mixture are known. This approach to measuring humidity requires an equation expressing the saturation vapor pressure as a function of temperature, the result of this equation is displayed by the RH1 hygrometer automatically as a relative humidity percentage.

The RH1 hygrometer is the perfect instrument to aid humidity control and quality assurance!

  • Takes measurements within a matter of seconds
  • Easy data storage for printing or analysis on PC (on RH1-USB only)
  • Durable humidity and temperature sensors
  • Menu language in English, German, French, Italian, Spanish and Russian
  • Hold function allows saving measurement values manually

Complete Kit
The RH1 is delivered as a complete kit including:
  • RH1 Moisture Meter
  • Wooden Case
  • Batteries
  • User Manual

Calibrated on
  • Relative humidity
  • Absolute humidity
  • Dew point
  • Wood

Measuring Range Relative air humidity 0 to 100%
Resolution 0.1%
Relative Humidity Calibration ±1.5% (10 to 90%) at 25°C
Temperature Range -10 to 60°C (14 to 140°F)
Temperature Resolution 0.1°C
Temperature Units can be set to °C and °F
Temperature Measurement Accuracy ±0.3°C (at 25°C) Pt 1000 DIN B
Dew Point Temperature Range -55 to 60°C (-67 to 140°F)
Dew Point Temperature Resolution 0.1°C
Absolute Air Humidity Range 0 to 130 g/m³
Absolute Air Humidity Resolution 0.1 g/m³
Equilibrium Moisture Content Range 2 to 30% Ugl
Equilibrium Moisture Content Resolution 0.1%
Equilibrium Moisture Content Calibration 5 to 15%
Equilibrium Moisture Content Accuracy ±0.5% (at 25°C)
Data Logger Automatic data log for 10.000 logs with measuring point report
Data Output (RH1-USB only) USB interface (supplied with data transfer cable & software)
Power 4x 1.5 Volt AA batteries
Warranty 2 years


Product name
RH1 - Relative Humidity Meter With Memory
£ 249,00 
RH1-USB - RH1 - Relative Humidity Meter With Memory & USB Output
£ 534,00 

Product name
RH-BLUETOOTH-OPTION - Bluetooth data communication module
£ 292,00 
RH-PRINTER - Portable thermoprinter on batteries
£ 349,00 
RH-WALLMOUNT - Wall Mount assembled on RH1
£ 30,00 
RH-SENSOR-CAP - Stainless steel sinter sensor cap
£ 32,00 
RH-CAL-EQUIP - Calibration equipment for instrument for Probe
£ 143,00 
RH-CAL-AMPOULES - Certified calibration ampoules - set of 5.2x35% r.h., 1x50%r.h., 2x80%r.h.
£ 77,00 
RH-CAL-AMPU - Certified calibration ampules - set of 5. 50%r.h.
£ 76,00 
All mentioned prices are excluding VAT & excluding shipment costs.
Availability : Available , preorder 1-2 weeks , special order, request

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