HMM30C HMM30C MODULE
Operating Manual U312en-1.3
2 99-11-29
NOTE
If the metal tube of the HMM30C is in contact with
metal parts (e.g. chamber wall) that are in galvanic
contact with the power supply ground, problems may
occur in strongly condensing situations. If the
condensed water forms a conductive path between the
tube and the sensor legs, the generated currents in this
path may cause electrochemical reactions and corrosion
in the probe structure. Therefore, it is recommended to
install the probe so that the metal tube is galvanically
isolated from the chamber wall.
OPERATING THE MODULE
The desired output range is chosen with appropriate jumpers (see Figure 3). When the
output has been chosen and the module has been connected to an external power supply,
it is ready for use.
RQHSRLQW
FDOLEUDWLRQ
FRQQHFWRU
RXWSXW
VHOHFWLRQ
9
9
9
P$
GU\HQG
FDOLEUDWLRQ
ZHWHQG
FDOLEUDWLRQ
Figure 3 Output selections and calibration connectors and
potentiometers
ONE POINT HUMIDITY CALIBRATION
The calibration can be checked with Vaisala’s one point calibrator: the HMI41 indicator
equipped with a suitable reference probe (e.g. HMP46) and the calibration cable
19165ZZ. Make the necessary adjustments with the dry-end calibration potentiometer. If a
more accurate two point calibration is preferred, the HMK15 or the HMK13B calibrators
with salt solutions are recommended. For detailed instructions, see the corresponding
manuals.
To Next Page
Loading...
Need help?
General
