Hygrometers

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 Hygrometer Type Maximum Humidity Measurement Best Temperature Measurement Accuracy Temperature Measurement Resolution Best Humidity Measurement Accuracy Humidity Measurement Resolution Dewpoint Measurement Meter Type Calibrated Interface Type Printer Functions Power Source
RS Stock No. 123-2232
BrandRS PRO
€396.00
Each
units
+60 (Type1) °C, +140 (Type1) °F, +1333 (Type2) °C, +2431 (Type2) °F Digital Hygrometer 95%RH ±0.1 %, ±0.8 °C, ±1.5 °F 0.1 °C, 0.1 °F ±3 %RH - Yes Handheld - - Yes Dew Point, Hold, Maximum & Minimum Display Battery
RS Stock No. 191-9564
Mfr. Part No.082.034A
BrandLaserliner
€27.12
Each
units
- Digital Hygrometer 99%RH - - ±2 %RH - - Digital - - - Dew Point Battery
RS Stock No. 187-3779
Mfr. Part No.HL-20D-SET
€530.40
Each
units
+60°C Digital Hygrometer 100%RH ±0.3 °C - ±1.3 %RH - Yes Digital - UART - - Battery
RS Stock No. 200-5020
Mfr. Part No.HL-20D-SET
€561.40
Each
units
- - - - - - - - - - - - - -
RS Stock No. 200-5023
Mfr. Part No.HL-20D
€488.63
Each
units
- - - - - - - - - - - - - -
RS Stock No. 913-0876
Mfr. Part No.LKM 456
€181.67
Each
units
- Thermohygrometer - - - - - - - - - - - -
RS Stock No. 187-3783
Mfr. Part No.HP32-S-Set
€491.40
Each
units
+200°C Digital Hygrometer 100%RH ±0.2 K - ±0.8 %RH - Yes Handheld - USB - - Battery
RS Stock No. 192-6502
BrandRS PRO
€381.08
Each
units
+100 °C, +212°F Digital Hygrometer 100%RH ±0.4 °C, ±0.8 °F 0.1 °C, 0.1°F ±3 %RH 0.1%RH Yes Handheld RSCAL USB - Alarm, Comparator, Data Hold Battery
RS Stock No. 165-1486
BrandRS PRO
€14.38
Each
units
+60°C Thermohygrometer 80%RH ±5 % - ±5 % - - Analogue - - - Measuring -
RS Stock No. 735-4944
Mfr. Part No.0560 6053
BrandTesto
€277.15
Each
units
+50°C Digital Hygrometer 95%RH ±0.5 °C 0.1°C ±3 %RH 0.1%RH Yes - UKAS - - Hold Battery
RS Stock No. 200-5021
Mfr. Part No.HL-20D-SET
€627.83
Each
units
- - - - - - - - - - - - - -
RS Stock No. 200-5026
Mfr. Part No.HP32-S-Set
€528.78
Each
units
- - - - - - - - - - - - - -
RS Stock No. 200-5024
Mfr. Part No.HP32
€403.72
Each
units
- - - - - - - - - - - - - -
RS Stock No. 433-3742
Mfr. Part No.SONDE HS 18 0/10 VCC
BrandEliwell
€207.87
Each
units
- Thermohygrometer - - - - - - - - - - - -
RS Stock No. 136-8254
Mfr. Part No.P01654246
€275.00
Each
units
+60 °C, +140 °F Digital Hygrometer 98%RH 0.5 °C ± 1 digit 0.1 °C, 0.1 °F 2% RH + 1 digit 0.1% Yes Digital - Bluetooth, USB 2.0 - Alarm, Automatic Power-OFF, Backlighting, Data Storage, Min-Max-Hold, Record Battery
RS Stock No. 192-6503
BrandRS PRO
€480.86
Each
units
+100 °C, +212°F Digital Hygrometer 100%RH ±0.4 °C, ±0.8 °F 0.1 °C, 0.1°F ±3 %RH 0.1%RH Yes Handheld UKAS USB - Alarm, Comparator, Data Hold Battery
RS Stock No. 127-8297
BrandRS PRO
€263.36
Each
units
+100 °C, +212 °F Digital Hygrometer 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
RS Stock No. 201-2157
Mfr. Part No.0560 2605 02
BrandTesto
€91.05
Each
units
- Digital Hygrometer 100%RH - 0.1°C ±5 %RH - - - - - - - -
RS Stock No. 735-4947
Mfr. Part No.0560 6053
BrandTesto
€210.72
Each
units
+50°C Digital Hygrometer 95%RH ±0.5 °C 0.1°C ±3 %RH 0.1%RH Yes - RSCAL - - Hold Battery
New
RS Stock No. 218-4310
Mfr. Part No.EWHS3140-4_20MA
BrandEliwell
€382.22
Each
units
+60°C - 100%RH - -40°C - - - - - - - - -