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.
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.
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.
(Price shown excludes VAT)
|Part Details||Brand||Absolute Maximum Temperature Measurement||Maximum Humidity Measurement||Best Temperature Measurement Accuracy||Best Humidity Measurement Accuracy||Power Source||Model Number p||Minimum Operating Temperature||Maximum Operating Temperature|
Carel DPWC111000 Thermohygrometer, +50°C
||Carel||+50°C||90%RH||±1.2 °C||±3 %RH||Mains||DPWC111000||0°C||+50°C|
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|
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|
Duct mount wide range RH+temp o/p sensor
||Carel||+70°C||90%RH||±0.7 °C||±3 %RH||Mains||DPDC210000||-10°C||+70°C|
Humidity probe HS18/0-10V
Humidity probe HS18/4-20mA