User Manual

4. Initial Operation
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4. Initial Operation
4.1 Insert battery
1
Open the TopSafe sealing cap and remove instrument.
2
Open battery compartment on rear of instrument.
3
Insert button cell (Type CR2032, 3V). The (+) sign must be
visible.
4
Close battery compartment.
5
Remove protection strip on the storage cap.
4.2 Connect external probe(BNC module pH3 only)
Attach BNC plug from the external probe to the BNC socket
and seal with the aid of a bayonet coupling.
5. Operation
5.1 Switching on/off
Switch on instrument: .
- All segments light up briefly and the instrument changes to the
measurement mode.
Switch off instrument: Keep pressed.
5.2 Setting instrument
The following functions can be set:
Function Description Setting options
Temperature unit Sets unit °C or °F
Auto Hold (AUTO HOLD) Automatically holds reading, On (switched on) or
as soon as it is stable* OFF (switched off)
Gradient/ Offset Displays gradient and offset None
values stored in the instrument (Information only)
(amount)
Calibration method (CAL) Sets 1, 2 or 3 point 1P, 2P or 3P
calibration
Calibration points (CAL pH) Sets calibration points 1P: 4, 7 or 10
2P: 47or 710
ON/HOLD
ON/HOLD