ELMETRON CX-401, User Manual

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User‘s manual for CX-401 multifunction meter v6.0x
5. SWITCHING THE METER ON AND OFF
After switching it on with the
button, the meter tests the memory and the
display on which all symbols are displayed (Pic. 3).
Pic. 3.
If the test ends successfully, after about 1.5 s the meter switches
automatically to the measuring mode, in which it was switched off. If a
sign is displayed it means that the meter has lost the factory settings and
requires the service repair. If after 1,5 s all symbols are continuously
displayed it informs that the calibration parameters of electrodes or cells have
been lost.
After pressing the meter adopts standard characteristics:
- offset = 0 pH, slope = 100% for the pH electrode;
-
K constant = 1.000 cm
-1
for the conductivity cell;
-
offset = 0% O
2
, slope = 100% O
2
for the oxygen sensor
and enters the measuring mode. It is necessary to calibrate the conductivity
cell the pH electrode and the oxygen sensor.
The meter is switched off by pressing and holding the
button until the
symbol displays. When the meter is powered by the rechargeable
batteries only, it switches automatically off after the time of non-use set by
the user (description in the chapter 29.4). This function is deactivated during
calibration, while collecting series of measurements and working with the
power adapter.