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4
Operation
4 Operation
4.1
General information
You switch the pH simulator on or off using the "ON/
OFF" switch. To switch it on, pull out the switch-
ing knob first (1) and then flick it upwards (2).
To switch it off, pull out the switching knob again and
flick it downwards.
You can test the internal battery using the "Batt.-
Test" push-button. If the battery is intact, the LED
lights up when you press the button.
The battery has an operating life of approx. 50 oper-
ating hours. A used battery can be replaced with a
standard 9-V block battery
(chapter 5.1 "Replacing used batteries",
Page 15).
NOTE!
Switch the device off again after use.
NOTICE!
A dirty or damp connection port can lead to incorrect measurements.
Protect the high-resistance connection port of the device during storage, so that it does not become
damp or dirty.
8
(2)
(1)
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