System description
10
Operating Instructions HYGROPHIL® H 4230-10 Serie A BA 030520
1.3.8
Temperature sensors
The internal temperature sensor, T
internal
, is built into the enclosure as a fixed
element.
It is used for compensating the humid temperature.
For measuring temperature-dependent humidity variables (such as relative
humidity (RH) or enthalpy (h)), you have the option of installing an external
temperature sensor (T1
external
). This must be placed in the position where the
humidity variable is to be measured.
1.3.9
Gas sampling hose
The gas humidity is not measured within the respective system. Rather, the
gas is extracted from there and pumped to the HYGROPHIL system via a
connecting line. It is essential that no water vapour condenses within the
connecting line as this would falsify the measurement result and could
possibly lead to operating problems. In order to prevent this, the temperature
of this line (and of the entire suction apparatus) must be kept above the
maximum dew-point temperature to be expected.
To this end, a gas sampling hose is used and its temperature is
automatically kept constant. At the same time, the dry temperature sensor is
used as the actual-value sensor. By programming the dry temperature (TT),
therefore, you also specify the gas sampling hose temperature.
1.3.10
Connection for external water detector
An external water detector is available as an optional extra for monitoring the
level in the water storage tank.
1.3.11
Filter
HYGROPHIL
®
H 4230 is highly insensitive to dirt. It is recommended that a
filter is set at the extraction site in order to extend the maintenance intervals
of the measurement chamber.
If required, please ask our expert consultants to select a suitable filter.
