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. 735-6757
Mfr. Part No.0563 6251
BrandTesto
$437.21
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. 348-8289
Mfr. Part No.DPWC110000
BrandCarel
$370.97
Each
units
+50°C 90%RH ±1.2 °C - ±3 %RH - - - - - - Mains - -
RS Stock No. 420-7261
Mfr. Part No.0560 6082
BrandTesto
$229.51
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. 145-0241
Mfr. Part No.0572 2154
BrandTesto
$375.00
Each
units
+50°C 100%RH ±0.3 °C - ±2 %RH - - - - - - - - -
RS Stock No. 732-0613
Mfr. Part No.0572 6174
BrandTesto
$574.98
Each
units
+40°C 100%RH ±0.3 °C - ±2 %RH - - - - - - - - -
RS Stock No. 136-8254
Mfr. Part No.P01654246
$616.23
Each
units
+140 °F, +60 °C 98%RH 0.5 °C 0.1 °F, 0.1 °C ±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. 348-8302
Mfr. Part No.DPDC110000
BrandCarel
$603.35
Each
units
+50°C 90%RH ±1.2 °C - ±3 %RH - - - - - - Mains - -
RS Stock No. 615-3245
Mfr. Part No.HI9565
$482.52
Each
units
- - - - - - - - - - - Battery 9V 250 h
RS Stock No. 433-3736
Mfr. Part No.SONDE HS 18 4/20 MA
BrandEliwell
$721.27
Each
units
- - - - - - - - - - - - - -
RS Stock No. 724-4190
Mfr. Part No.DTH10
BrandKane
$170.60
Each
units
+50°C 95%RH ±1 °C 0.1°C ±5 %RH - - Pen Digital - - Hold, Record Battery CR2032 150 h
RS Stock No. 136-5501
Mfr. Part No.HC2A-S
$576.61
Each
units
+100°C 100%RH ±0.1 K 0.1°C ±0.5 %RH <1%RH Yes Handheld UART - Measuring - - -
RS Stock No. 476-909
Mfr. Part No.13/606/2
BrandBrannan
$95.65
Each
units
+50°C - ±0.5 °C - - - - Handheld - - - - - -
RS Stock No. 913-0860
Mfr. Part No.LKM 445
$237.05
Each
units
- - - - - - - - - - - - - -
RS Stock No. 266-1893
Mfr. Part No.MS-7000
BrandLutron
$257.20
Each
units
- - - - - - - - - - - Battery 9V -
RS Stock No. 735-6754
Mfr. Part No.0560 6053
BrandTesto
$175.38
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. 913-0879
Mfr. Part No.LKM 446
$237.05
Each
units
- - - - - - - - - - - - - -
RS Stock No. 732-0610
Mfr. Part No.0572 6172
BrandTesto
$520.38
Each
units
+70°C 100%RH ±0.3 °C - ±2 %RH - - - - - - - - -
RS Stock No. 348-8318
Mfr. Part No.DPDC210000
BrandCarel
$766.17
Each
units
+70°C 90%RH ±0.7 °C - ±3 %RH - - - - - - Mains - -
RS Stock No. 206-8913
Mfr. Part No.13/222/3
BrandBrannan
$45.10
Each
units
+50°C - ±0.5 °C - - - - Wall Mounted - - - - - -
RS Stock No. 433-3742
Mfr. Part No.SONDE HS 18 0/10 VCC
BrandEliwell
$392.86
Each
units
- - - - - - - - - - - - - -
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