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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Part Details Brand 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 Functions Power Source Battery Type Battery Life Model Number p Weight Minimum Operating Temperature Maximum Operating Temperature
Digital Humidity Meter RS Pro - - - - - - - - - - Battery 9V 200 h RS1260 140g 0°C +60°C
Fluke 971 Temperature Humidity Meter Fluke +60°C 95%RH ±0.5 °C 0.1°C ±2.5 %RH 0.1%RH Yes Handheld - Record Battery AAA 200 h 971 190g -20°C +60°C
Mini pocket temperature/humidity meter RS Pro +50°C 99%RH ±1 °C 0.1°C ±5 % 0.1%RH Yes Handheld - Data Hold Battery AAA - - 80g - -
Testo 608H1 temperature meter,0-50degC Testo +50°C 95%RH ±0.5 + 1 Digit °C 0.1°C ±3 %RH 0.1%RH Yes Digital - - Battery 9V 1 yr 608-H1 168g 0°C +50°C
RS PRO RS1360A Thermohygrometer, +140 °F, +60 °C RS Pro +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 RS1360A 210g 0°C +60°C
Carel DPWC111000 Thermohygrometer, +50°C Carel +50°C 90%RH ±1.2 °C - ±3 %RH - - - - - Mains - - DPWC111000 - 0°C +50°C
RS PRO Analogue thermometer/hygrometer RS Pro +60°C 80%RH ±5 % - ±5 % - - Analogue - Measuring - - - - 175g - -
Wall mounting RH+temp o/p sensor,275mm L Carel +50°C 90%RH ±1.2 °C - ±3 %RH - - - - - Mains - - DPWC110000 - 0°C +50°C
RS PRO RS1362 Thermohygrometer, +1333 (Type2) °C, +140 (Type1) °F, +2431 (Type2) °F, +60 (Type1) °C RS Pro +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 - Dew Point, Hold, Maximum & Minimum Display Battery AAA 90 h, 100 (Except Printing & Beeper) h RS1362 430g 0°C +50°C
Testo 608-H2 Thermohygrometer, +70°C Testo +70°C 98%RH ±0.5 + 1 Digit °C 0.1°C ±2 %RH 0.1%RH Yes Digital - - Battery 9V 1 yr 608-H2 168g -10°C +70°C
Brannan 13/602/2 Thermohygrometer, +50°C Brannan +50°C - ±0.5 °C - - - - Handheld - - - - - 13/602/2 - - -
Testo Testo 610 Thermohygrometer, +50°C Testo +50°C 100%RH ±0.5 °C 0.1°C ±2.5 %RH 0.1%RH Yes - - Hold Battery AAA 200 h Testo 610 90g -10°C +50°C
RS PRO Thermohygrometer, +100 °C, +212 °F RS Pro +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 - 178g 0°C +60°C
Brannan 13/222/3 Thermohygrometer, +50°C Brannan +50°C - ±0.5 °C - - - - Wall Mounted - - - - - 13/222/3 - - -
Digital moisture content meter,9-30% Lutron - - - - - - - - - - Battery 9V - MS-7000 330g 0°C +50°C
RS PRO RS1364 Thermohygrometer, +140 °F, +60 °C RS Pro +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 RS1364 235g 0°C +60°C
Rotronic Instruments HC2A-S Thermohygrometer, +100°C Rotronic Instruments +100°C 100%RH ±0.1 K 0.1°C ±0.5 %RH <1%RH Yes Handheld UART Measuring - - - HC2A-S 17g -50°C +100°C
Testo 625 thermohygrometer fixed probe Testo +1370°C 100%RH ±0.5 °C 0.1°C ±2.5 %RH 0.1%RH Yes Handheld - Hold Battery 9V 70 h 625 195g -20°C +50°C
Rotronic Instruments HP21 Thermohygrometer, +60°C Rotronic Instruments +60°C 100%RH ±0.2 °C 0.01K ±1 %RH 1%RH Yes Handheld USB Alarm, Data Logging Battery 9V 100 h HP21 210g -10°C +60°C
Duct mounting RH+temp o/p sensor,275mm L Carel +50°C 90%RH ±1.2 °C - ±3 %RH - - - - - Mains - - DPDC110000 - 0°C +50°C
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