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Please Note: Siemens warehouse distribution centre will be closed on Thurs 29th and Fri 30th May 2025 due to an important restructure within their Warehouse. There will be no dispatches on these days from their warehouse. The warehouse reopens on the Monday 02 June 2025 where normal service will resume
The Home of Air Handling & Ventilation Controls & Spares
The Axio AX-RHT-3-x range of RH & T Transmitters provide accurate Relative Humidity and Temperature measurements, with selectable current or voltage analogue outputs. The units are extremely reliable, have excellent stability and a quick response time. The standard accuracy range is 3%.
RH accuracy +/- 3% typical
Temperature accuracy +/- 0.3°C typical
Sensor type Capacitive
Sensor protection PTFE filter
Long term stability +/-1% RH at 50% RH in 5 years
Repeatability +/- 0.5% RH
Hysteresis +/-1% of span max
Response time 15 seconds @ 25°C, but dependant on airflow
Supply voltage 24Vac/dc (+/-15%) (24Vdc only for Room unit with 4-20mA output selected)
Output (voltage) 0 – 10Vdc or 0 – 5Vdc at 10mA maximum load
Output (current) 4-20mA at 500Ohms maximum load
Output range - Relative Humidity 0 to 95%
Output range - Temperature Room -10°C to +40°C, Duct 0°C to +70°C, Outside Air -20°C to +50°C
Terminals Rising clamp for 0.5-2.5mm2 cable
Ambient temperature range -10°C to 50°C, 0-95% RH
Dimensions, weight & protection:
● Room: 85 x 85 x 24mm, 75g, IP20 ● Duct: 115 x 80 x 52mm housing - 230(L) x 12mm ∅ maximum probe, 115g, IP65 (housing only) ● Outside air: 115 x 80 x 52mm, 140g, IP65 (housing only)