Correcting Incorrect Measured Results; Analog Adjustment - testo 105679 Bedienungsanleitung

Correcting incorrect measured results

Note:
If only the humidity unit without a numerical value is
shown in the display this means that both keys are
activated at the same relative humidity. Carry out the
following steps:
- Press the button S1 (11.3%) at normal room
humidity.
- Briefly increase the relative humidity near the
sensor e.g. by breathing on it and while doing
this press the key S2 (75.3%).
- A numerical value now appears once again on
the display.
- You can then carry out a humidity adjustment in
accordance with instructions.
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Digital adjustment
The buttons S1 and S2 should only be acti-
vated during adjustment otherwise the
measured result may be incorrect.

Analog adjustment

Analog humidity probes for the 6200, 6250, 6300,
6400 and 5400 instruments
The humidity probes are equipped with potentiome-
ters. Adjustment is carried out by turning the poten-
tionmeter P1/P2.
First adjustment (zero point setting)
Screw or insert probe in control container with
11.3%RH (LiCl) until the stop.
Period of stabilization: 1 hour.
Set display to "00.0" using potentiometer P1.
Second adjustment (setting the gradient)
Screw or insert probe in control container with
75.3%RH (NaCl) until the stop.
Period of stabilization: 1 hour.
Set display value at "64.0" with potentiometer P2. Set
the display value at "75.3" with potentiometer P1.
The adjustment is completed.
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