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. 777-0440
Mfr. Part No.0560 6230
BrandTesto
TWD6,052.00
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. 412-3062
Mfr. Part No.0560 6081
BrandTesto
MYR23.830
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. 724-4193
Mfr. Part No.2418208
BrandFluke
TWD9,978.00
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. 777-0444
Mfr. Part No.0560 6220
BrandTesto
TWD9,619.00
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. 725-9521
Mfr. Part No.HygroPalm HP21
TWD11,345.00
Each
units
+60°C 100%RH ±0.2 °C 0.01K ±1 %RH 1%RH Yes Handheld with Fixed Probe USB - Alarm, Data Logging Battery 9V 100 h
RS Stock No. 735-6757
Mfr. Part No.0563 6251
BrandTesto
TWD7,976.00
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. 195-9129
BrandRS PRO
TWD754.00
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. 348-8318
Mfr. Part No.DPDC210000
BrandCarel
TWD13,140.00
Each
units
+70°C 90%RH ±0.7 °C - ±3 %RH - - - - - - Mains - -
RS Stock No. 196-8736
BrandRS PRO
TWD737.00
Each
units
- 99%RH - - ±5 %RH - - - - - - - - -
RS Stock No. 266-1893
Mfr. Part No.MS-7000
BrandLutron
TWD7,381.00
Each
units
- - - - - - - - - - - Battery 9V -
RS Stock No. 420-7261
Mfr. Part No.0560 6082
BrandTesto
TWD4,008.00
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. 913-0860
Mfr. Part No.LKM 445
TWD5,578.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 512-0244
Mfr. Part No.0560 6351
BrandTesto
TWD11,182.00
Each
units
- - - - - - - - - - - Battery AA 200 h
RS Stock No. 348-8302
Mfr. Part No.DPDC110000
BrandCarel
TWD8,350.00
Each
units
+50°C 90%RH ±1.2 °C - ±3 %RH - - - - - - Mains - -
RS Stock No. 348-8289
Mfr. Part No.DPWC110000
BrandCarel
TWD5,511.00
Each
units
+50°C 90%RH ±1.2 °C - ±3 %RH - - - - - - Mains - -
RS Stock No. 913-0879
Mfr. Part No.LKM 446
TWD5,416.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 106-5306
BrandRS PRO
TWD3,256.00
Each
units
+50°C 99%RH ±1 °C 0.1°C ±5 % 0.1%RH Yes Handheld - - Data Hold Battery AAA -
RS Stock No. 724-4190
Mfr. Part No.DTH10
BrandKane
TWD2,391.00
Each
units
+50°C 95%RH ±1 °C 0.1°C ±5 %RH - - Pen Digital - - Hold, Record Battery CR2032 150 h
RS Stock No. 348-8267
Mfr. Part No.DPWC111000
BrandCarel
TWD4,630.00
Each
units
+50°C 90%RH ±1.2 °C - ±3 %RH - - - - - - Mains - -
RS Stock No. 735-6754
Mfr. Part No.0560 6053
BrandTesto
TWD3,567.00
Each
units
+50°C 95%RH ±0.5 °C 0.1°C ±3 %RH 0.1%RH Yes - - - Hold Battery AAA 1000 h