5. Operation22
5. Operation
5.1 Switching on/off
Switch on instrument:
ON/HOLD
.
- All segments light up briefly and the instrument changes to the
measurement mode.
Switch off instrument: Keep
ON/HOLD
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)
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: 4 7 or 7 10
Auto Off (AUTO OFF) Instrument switches off On (switched on) or
automatically after 10 minutes OFF (switched off)
if no button has been pressed
Display light (bl) Display light goes on for On (switched on) or
approx. 3 s whenever a OFF (switched off)
button is activated
Beeper (bP) Warning sound (button pressed, On (switched on) or
stable reading reached with OFF (switched off)
Auto Hold function switched on)
* Modification less than 0.02pH in 20s
The setting procedure can be interrupted by switching off the
instrument. The modifications are then not saved.
The instrument is switched off.
1 Opening the setting mode:
MODE
is kept pressed +
ON/HOLD
.
2 Select temperature unit (°C or °F):
CAL
.
Confirm selection:
MODE
.
3 Switch Hold on (On) or off (OFF):
CAL
.
Confirm selection:
MODE
.
- The gradient and offset values stored in the instrument are dis-
played as information.
4 Change view:
MODE
.
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