Stationary high-precision psychrometer FPA 836-3P3
8.2 Stationary high-precision psychrometer FPA 836-3P3
Filling the water reservoir
1. Undo the refill screw
2. Top up the reservoir with distilled water using the squeeze bottle supplied
3. Tighten the refill screw again and perform measuring operation
The water in the reservoir may in certain circumstances become contami-
nated. The reservoir must be cleaned therefore about every 6 weeks. In the
event of long periods of inactivity or for transport purposes the reservoir should
be emptied completely.
Changing the wick
If the cotton wick becomes dirty or encrusted it will no longer absorb moisture
properly; as a result measured values may be falsified. It should therefore be
replaced at regular intervals (depending on how clean the air and water are).
1. Emptying the reservoir (see above)
2. Unscrew the water reservoir lid
3. Unscrew the motor / sensor retaining plate and withdraw the old wick from
the humid temperature (HT) sensor
4. From the side of the reservoir insert the new wick into the psychrometer
tube and pull over the HT sensor
5. Screw the motor / sensor retaining plate back again
6. From the side of the reservoir adjust the wick, screw the reservoir lid back
in position, and refill the reservoir.
Using the psychrometer
To obtain reliable results it is very important that the psychrometer be operated
properly. Please ensure therefore that you always comply with all the following
advisory notes :
1. After the fan starts up it will take approx. 20 to 30 seconds before the humid
temperature sensor is sufficiently cooled. Only after this period will humidity
values be stable.
ALMEMO
®
1036
15
