At the end of the measurements, switch off the instrument
by pressing the
water and put it back in its storage bottle.
3.4. AUTO OFF
The instrument switches itself off automatically at the end of
20 minutes of inactivity.
To disable auto off, switch the instrument on by pressing the
and HOLD keys simultaneously. The instrument displays
n. Release the keys.
Auto off is restored the next time the instrument is switched on.
3.5. ERRORS
The instrument displays - - -
The pH is outside the measurement range. The solution is
too alkaline or too acid.
The instrument displays H or L
The temperature is outside the measurement range. The
solution is too cold or too hot.
4. TECHNICAL CHARACTERISTICS
4.1. REFERENCE CONDITIONS
Quantity of influence
Temperature
Relative humidity
Supply voltage
4.2. CHARACTERISTICS
pH measurement range: 0.00 to 14.00
Resolution: 0.01 pH
Intrinsic error: ± 0.1 pH
Automatic temperature compensation from 0 to 60°C or 32
to 140°F.
key. Clean the electrode with de-ionized
16
Reference values
23 ±5°C
30 to 80%RH
6 ± 0.2V