Vaisala HUMICAP HM70 - Beware of Temperature Differences

5 Maintenance
5.1 Changing the filt
er
Over time the probe filt
er will be contaminated with matter that you cannot remove by
cleaning. This aects the probe's response time and measurement accuracy. Remove the old
filter from the probe and replace it with a new one.
Note the following precautions:
Avoid touching the sensor.CAUTION!
Do not try to clean the filt
er.CAUTION!
5.2
Error messages
If HM70 displays an error message, check fir
st that the sensor is connected properly. If there is
condensed water in the probe, let the probe dry before resuming measurement.
In case of constant error, contact Vaisala (see Technical support (page 20)).
5.3 Changing the rechargeable battery pack
• New rechargeable battery pack
•
Medium-sized flat head screwdriver
In case you are installing a rechargeable battery pack in the MI70 indicator and you have a
de
vice with alkaline batteries, remove the metal contact from the probe port end of the
battery compartment before installing the battery pack.
1. Open the back plate of the indicator by opening the screw of the back plate.
2. Remove the old battery pack. Detach the black connector by carefully pulling it up from
the wires.
M212070EN-B
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