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. 724-4193
Mfr. Part No.FLUKE-971
BrandFluke
HK$2,304.77
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. 412-3062
Mfr. Part No.0560 6081
BrandTesto
HK$911.56
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. 292-357
Mfr. Part No.0560 0610
BrandTesto
HK$1,240.61
Each
units
+50°C 100%RH ±0.5 °C 0.1°C ±2.5 %RH 0.1%RH Yes - - - Hold Battery AAA 200 h
RS Stock No. 420-7261
Mfr. Part No.0560 6082
BrandTesto
HK$890.71
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
RS Stock No. 476-909
Mfr. Part No.13/606/2
BrandBrannan
HK$502.04
Each
units
+50°C - ±0.5 °C - - - - Handheld - - - - - -
RS Stock No. 725-9515
Mfr. Part No.HygroClip HC2-HK25
HK$7,048.88
Each
units
+150°C 100%RH ±0.1 °C - ±0.8 %RH - Yes Handheld UART - Record Mains - -
RS Stock No. 327-3560
Mfr. Part No.0560 4450
BrandTesto
HK$6,891.12
Each
units
+1370°C 100%RH ±0.2 °C 0.1°C - 0.1%RH Yes Digital RS232 Yes Record Battery 9V 45 h
RS Stock No. 735-6754
Mfr. Part No.0560 6053
BrandTesto
HK$773.36
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. 512-0244
Mfr. Part No.0560 6351
BrandTesto
HK$2,934.90
Each
units
- - - - - - - - - - - Battery AA 200 h
RS Stock No. 735-6757
Mfr. Part No.0563 6251
BrandTesto
HK$2,009.20
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. 615-3239
Mfr. Part No.HI9564
HK$1,285.12
Each
units
+60°C 95%RH ±0.5 °C 0.1°C ±3 %RH 0.1%RH - Handheld - - Hold Battery 9V -
RS Stock No. 206-8913
Mfr. Part No.13/222/3
BrandBrannan
HK$140.55
Each
units
+50°C - ±0.5 °C - - - - Wall Mounted - - - - - -
RS Stock No. 777-0440
Mfr. Part No.0560 6230
BrandTesto
HK$1,481.00
Each
units
+60°C 100%RH ±0.4 °C 0.1°C ±2 %RH, ±3 %RH 0.1%RH - Digital - - Maximum & Minimum Display Battery 4 x AA 1 yr
RS Stock No. 292-335
Mfr. Part No.0560 6062
BrandTesto
HK$1,273.00
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. 725-9521
Mfr. Part No.HygroPalm HP21
HK$3,151.67
Each
units
+60°C 100%RH ±0.2 °C 0.01K ±1 %RH 1%RH Yes Handheld USB - Alarm, Data Logging Battery 9V 100 h
RS Stock No. 266-1893
Mfr. Part No.MS-7000
BrandLutron
HK$1,608.26
Each
units
- - - - - - - - - - - Battery 9V -
RS Stock No. 724-4190
Mfr. Part No.DTH10
BrandKane
HK$577.69
Each
units
+50°C 95%RH ±1 °C 0.1°C ±5 %RH - - Pen Digital - - Hold, Record Battery CR2032 150 h
RS Stock No. 327-6294
Mfr. Part No.0560 6450
BrandTesto
HK$5,629.04
Each
units
- - - - - - - - - - - Battery - 20 → 45 h
RS Stock No. 516-0573
Mfr. Part No.0563 6352
BrandTesto
HK$4,102.76
Each
units
+1370°C 100%RH ±0.3 °C 0.1°C - 0.1%RH Yes - USB - - Battery AA 200 h
RS Stock No. 913-2585
Mfr. Part No.0560 1605
BrandTesto
HK$683.39
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
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