PRH-622 – Relative Humidity and Temperature Sensor - Duct Mount

Relative Humidity and Temperature Sensor - Duct Mount


The new RH-600 range of humidity and temperature sensors offer the latest technology high precision and accuracy RH & T element, and installed in our new revised robust 600 series housing. The housing has an added benefit of being easy to install with the new hinged lid, which can also be screwed closed to make the unit tamperproof. An optional multi-line backlit LCD display is available, along with a direct PTC/NTC sensing element (when this option is required, the type of element must be specified at the time of ordering). Output signals of 0-10Vdc, 0-5Vdc or 4-20mA (loop or externally powered) for all measured values and RH are available as standard. A custom output range for temperature can be requested, between –20 and +50°C (–4 to +122°F). The -UN has a single output which automatically determines whether to run in current or voltage mode, no more jumpers or switches to worry about.


-High stability and reliability
-Self-detecting output (-UN types)
-Snap-fit cover 
-Fully configurable LCD display option


Accuracy: PRH-622 ± 2% (10 to 90% of RH)
Accuracy Temperature: ± 0,3°C
Long-Term Stability: <0,5%
Ambient range: -30 to +70°C
Power Supply: 4 to 20 mA 20-35Vdc for 500Ω
  0 to 10 VCdc 17 to 34Vdc, 14 to 26Vac (4.7kΩ min.)
Output: Standard 4 to 20 mA or 0-10Vdc
Output Ranges: Humidity 0 to 100%
  Temperature -20 to +50 ° C as standard, others available on request
Protection: IP65
Dimensions: Housing 57 x 90 mm
  Probe 210 x 19 mm dia.
Weight: 220 g


Models & Accessories
PRH-622-AHRH and T Transmitter 2%
PRH-622RH and T Transmitter 3%
PRH-622-ENDuct Enthaply and Dewpoint Transmitter
PRH-622-UNDuct RH Sensor Single Analogue Output
PRH-622-UN-TDuct RH Sensor Single Analogue Output and D.T Output
-TDirect resistive temperature output
-TRCustom temperature output range
-LCDIntegral LCD display
PDPADuct Probe Adjustment Flange


To download the product datasheet, please click the links below:

Pulpit rock
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