Condensation on a surface occurs when the relative humidity (RH) of the air close to the surface reaches 100 % RH. Because of very good thermal coupling with the surface, EE046 measures accurately the RH of the air at surface temperature.
The relay output gives an early warning when approaching condensing conditions, before condensation actually happens. It indicates also a power supply failure or a broken cable.
A status LED indicates normal operation, condensation danger or power supply failure. The E+E proprietary coating protects the humidity sensor against dust and dirt.
10...100% RHWorking range
90 ±3% RHSwitching point
t90 < 3 min.Response time at change of the surface temperature
t90 < 25 sec.Response time at change of the relative humidity
24 V AC/DC, 1 AMax. switch load
24 V AC/DCSupply
Transmitter with "two-wires" technology receive the power from the process, and the signal is carry on return wire (closed current loop). With technology "three-wires" the power supply is separate from current output: 2 wires are the power supply and third carry the signal.