The high humidity probe is equipped with a high-precision, long-term stable humidity sensor from Testo and delivers precise measurement results.
Thanks to the heated humidity sensor, a microclimate with a lower relative humidity is created inside the filter – this ensures improved sensor response and reduces the likelihood of corrosion.
The testo 6614 probe also has an additional temperature probe. This accurately measures the process temperature, on the basis of which a transmitter calculates the process humidity.

* Long-term stability: ≤ ±1% RH / year