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
New
RS Stock No. 187-3775
Mfr. Part No.HC2-C04
HK$6,324.68
Each
units
+200°C 100%RH ±0.1 K - ±0.8 %RH - Yes Analogue UART - - Mains - -
New
RS Stock No. 187-3780
Mfr. Part No.HL-20D
HK$3,379.60
Each
units
+60°C 100%RH ±0.3 °C - ±1.3 %RH - Yes Digital UART - - Battery 1.5 V AA Alkaline 13 month
RS Stock No. 145-0241
Mfr. Part No.0572 2154
BrandTesto
HK$1,320.71
Each
units
+50°C 100%RH ±0.3 °C - ±2 %RH - - - - - - - - -
RS Stock No. 123-2230
BrandRS PRO
HK$1,037.30
Each
units
+60 °C, +140 °F 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. 165-1486
BrandRS PRO
HK$129.18
Each
units
+60°C 80%RH ±5 % - ±5 % - - Analogue - - Measuring - - -
New
RS Stock No. 187-3782
Mfr. Part No.HP32
HK$3,174.41
Each
units
+200°C 100%RH ±0.2 K - ±0.8 %RH - Yes Handheld USB - - Battery Lithium Polymer 48 h
New
RS Stock No. 187-3784
Mfr. Part No.HC2A-WIN-USB
HK$4,043.45
Each
units
+100°C +100%RH ±0.1 K - ±0.8 %RH - Yes Handheld UART - Alarm Mains - -
RS Stock No. 136-8254
Mfr. Part No.P01654246
HK$2,641.41
Each
units
+60 °C, +140 °F 98%RH 0.5 °C 0.1 °C, 0.1 °F ±2 (10 → 90 %RH) %, ±4 (Outside Range) % 0.1% Yes Digital Bluetooth, USB, Wireless - Alarm, Automatic Power-OFF, Backlighting, Data Storage, Min-Max-Hold, Record Battery 1.5 V AA/LR6 Alkaline 1000 h
RS Stock No. 145-0240
Mfr. Part No.0572 2155
BrandTesto
HK$2,395.77
Each
units
+70°C 100%RH ±0.3 °C - ±2 %RH - - - - - - - - -
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