Thermohygrometers

A hygrometer measures the humidity and water vapour in the air. A thermohygrometer measures both humidity and temperature.

Within a volume of air, the maximum amount of water vapour it can hold varies greatly by temperature with cold air holding a fraction of what warmer air will. Most moisture meters use temperature to give the relative humidity (RH) for a particular temperature and display it as a percentage. Most models have a built-in digital LCD display but there are several which use an analogue readout, these are primarily for continuous monitoring.

These instruments all feature built-in displays and some offer features such as datalogging, web bulb temperature or dewpoint.

RS offers a range of thermo-hygrometers, many of which can be calibrated to UCAS or RS Calibration standards to ensure accurate measurements.


What are thermohygrometers used for?


Primarily, thermo-hygrometers are used to test HVAC systems and office environments. They often feature a probe which can be inserted through an air-conditioning duct to get readings from within the ducting.


What's the difference between a thermo hygrometer and a moisture meter?


A hygrometer measures the moister in the air and a moisture meter measures the moisture within a material such as wood, paper or stud walls.


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Description Price Absolute Maximum Temperature Measurement Maximum Humidity Measurement Best Temperature Measurement Accuracy Temperature Measurement Resolution Best Humidity Measurement Accuracy Humidity Measurement Resolution Dewpoint Measurement Meter Type Interface Type Printer Functions Power Source Battery Type Battery Life
RS Stock No. 123-2210
BrandRS PRO
MYR485.71
Each
units
- 99%RH - 0.1°C ±3 % HR 0.1%RH - - - No Dew Point, Hydrometry, Max/MIN/HOLD, Temperature Battery PP3 9V PP3 200 h
RS Stock No. 106-5306
BrandRS PRO
MYR400.89
Each
units
+50°C 99%RH ±1 °C 0.1°C ±5 % 0.1%RH Yes Handheld - - Data Hold Battery AAA -
RS Stock No. 127-8297
BrandRS PRO
MYR1,478.07
Each
units
+100 °C, +212 °F 100%RH ±0.4 °C, ±0.8 °F 0.1 °C, 0.1 °F ±3 %RH 0.1%RH Yes Handheld USB - Alarm, Comparator, Data Hold Battery 006P 9V, NEDA 1604 2 month
RS Stock No. 165-1486
BrandRS PRO
MYR80.31
Each
units
+60°C 80%RH ±5 % - ±5 % - - Analogue - - Measuring - - -
RS Stock No. 127-8296
BrandRS PRO
MYR1,067.45
Each
units
+100 °C, +212 °F 100%RH ±0.4 °C, ±0.8 °F 0.1 °C, 0.1 °F ±3 %RH 0.1%RH Yes Handheld USB - Alarm, Comparator, Data Hold Battery 006P 9V, NEDA 1604 2 month
RS Stock No. 155-8900
BrandRS PRO
MYR216.47
Each
units
- 100%RH ±0.5 °C 0.1°C ±3 %RH 0.1%RH - - Bluetooth - - Battery 9V Battery -
RS Stock No. 123-2230
BrandRS PRO
MYR796.83
Each
units
+140 °F, +60 °C 95%RH ±0.4 °C, ±0.8 °F 0.1 °C, 0.1 °F ±3 %RH 0.1%RH Yes Handheld - - Dew Point, Hold, Memory, Read Battery 9V 140 h
RS Stock No. 123-2232
BrandRS PRO
MYR2,246.57
Each
units
+1333 (Type2) °C, +140 (Type1) °F, +2431 (Type2) °F, +60 (Type1) °C 95%RH ±0.1 %, ±0.8 °C, ±1.5 °F 0.1 °F, 0.1 °C ±3 %RH - Yes Handheld - Yes Dew Point, Hold, Maximum & Minimum Display Battery AAA 90 h, 100 (Except Printing & Beeper) h
New
RS Stock No. 196-8736
BrandRS PRO
MYR110.86
Each
units
- 99%RH - - ±5 %RH - - - - - - - - -
New
RS Stock No. 195-9129
BrandRS PRO
MYR128.87
Each
units
- 99%RH - 0.1 °C, 0.1 °F ±4 %RH 0.1%RH No Digital - No Measuring Battery 1.5 V AA 7 → 8 month
RS Stock No. 123-2233
BrandRS PRO
MYR894.89
Each
units
+140 °F, +60 °C 95%RH ±0.5 °C, ±0.9 °F 0.1 °F, 0.1 °C ±3 %RH 0.1%RH Yes Handheld - - Dew Point, Hold, Maximum & Minimum Display, Record, Relative, Wet Bulb Battery AAA 200 h
RS Stock No. 724-4193
Mfr. Part No.2418208
BrandFluke
MYR2,293.00
Each
units
+60°C 95%RH ±0.5 °C 0.1°C ±2.5 %RH 0.1%RH Yes Handheld - - Record Battery AAA 200 h
RS Stock No. 476-909
Mfr. Part No.13/606/2
BrandBrannan
MYR304.23
Each
units
+50°C - ±0.5 °C - - - - Handheld - - - - - -
RS Stock No. 412-3062
Mfr. Part No.0560 6081
BrandTesto
MYR382.71
Each
units
+50°C 95%RH ±0.5 + 1 Digit °C 0.1°C ±3 %RH 0.1%RH Yes Digital - - - Battery 9V 1 yr
RS Stock No. 206-8913
Mfr. Part No.13/222/3
BrandBrannan
MYR92.89
Each
units
+50°C - ±0.5 °C - - - - Wall Mounted - - - - - -
RS Stock No. 292-335
Mfr. Part No.0560 6062
BrandTesto
MYR848.75
Each
units
+50°C 100%RH ±0.5 °C 0.1°C ±1 %RH 0.1%RH - Handheld - - - Battery AAA 130 h
RS Stock No. 735-6757
Mfr. Part No.0563 6251
BrandTesto
MYR918.87
Each
units
+1370°C 100%RH ±0.5 °C 0.1°C ±2.5 %RH 0.1%RH Yes Handheld - - Hold Battery 9V 70 h
RS Stock No. 735-6754
Mfr. Part No.0560 6053
BrandTesto
MYR552.29
Each
units
+50°C 95%RH ±0.5 °C 0.1°C ±3 %RH 0.1%RH Yes - - - Hold Battery AAA 1000 h
RS Stock No. 913-2585
Mfr. Part No.0560 1605
BrandTesto
MYR458.54
Each
units
+60°C 100%RH ±0.5 °C 0.1°C ±1.8 %RH 0.1%RH Yes Handheld - - Measuring Battery AAA Micro 250 h
RS Stock No. 420-7261
Mfr. Part No.0560 6082
BrandTesto
MYR441.24
Each
units
+70°C 98%RH ±0.5 + 1 Digit °C 0.1°C ±2 %RH 0.1%RH Yes Digital - - - Battery 9V 1 yr
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