Heated humidity probe
In order to avoid drift effects due to long-term exposure of the sensing elements to high humidity, the sensor head of the EE211 humidity probe is continuously heated. The permanent over-temperature leads to max. 80 % RH at the sensor. Condensation-related dirt deposits as well as corrosion of the sensor are thereby prevented. Furthermore, the proprietary E+E sensor coating also protects the active sensor surface from contamination and corrosive influences.
The combination of these features results in considerably improved long-term stability and increases both the lifetime and the measuring performance of the sensor.
Precise measurements and calculated values
The EE211 calculates the dew point temperature (Td) based on the relative humidity (RH) and temperature (T) values measured by the heated humidity probe. A separate, interchangeable temperature probe measures the ambient temperature. From Td and T the EE211 calculates back the ambient relative humidity as well as additional physical quantities like absolute humidity, mixing ratio, wet-bulb temperature or specific enthalpy.
Digital and analogue outputs
The measured values are available on the Modbus RTU interface or on two analogue current or voltage outputs. The Modbus RTU parameters and the scaling of the analogue outputs can be set with the free configuration software.
The optional backlit display can show up to three measurands simultaneously.
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