Trotec BW10 Instructions Manual page 7

To perform the calibration, please proceed as follows:
Info
Always use fresh buffer solutions for calibration.
1. Press the Power (5) button to switch the device on.
ð The currently measured pH and temperature values are
indicated on the display (2).
2. With light circular motions, immerse the measuring
probe (7) in the buffer solution for the pH value 7 first.
ð The measuring electrode (8) should be completely
surrounded by the buffer solution.
3. Wait until a stable measured value is shown on the
measurement value display (10).
4. Press the CAL button (3) for approx. 3 s.
ð CAL is displayed on the measurement value display.
5. Let go of the CAL button.
ð After approx. 2 s, SA is indicated on the measurement
value display (10).
ð Afterwards, End is displayed.
ð Calibration for pH value 7 is now completed and the
current measurement result is displayed.
6. Repeat steps 2 to 5 for the buffer solution which is closest
to the expected pH value.
Info
If calibration is aborted, this is either due to a wrong
buffer solution or to a defective measuring
electrode (8).
First check whether the correct buffer solution was
used by means of a second measuring device if
necessary. If the buffer solution corresponds to the pH
value to be calibrated, the measuring electrode is
defective and must be replaced, see chapter Replacing
the measuring electrode.
EN
Carrying out a measurement
1. Immerse the measuring probe (7) in the liquid to be
measured.
ð The measuring electrode (8) should be completely
surrounded by the liquid.
2. Press the Power (5) button to switch the device on.
ð The currently measured pH and temperature values are
indicated on the display (2).
Info
If the measured value is outside the measuring range,
this is indicated on the display (2).
The measurement value display (10) will show --- for
the pH value and either L or H for too low or too high
temperature values.
Changing the unit °C / °F
In default setting, the measuring device is set to °C.
Please proceed as follows to change between the units °C
and °F:
ü The measuring device is switched off.
1. Simultaneously press the CAL (3) and Power button (5)
until the unit °C (11) or °F (13) is indicated on the
display (2).
2. Press the CAL button (3) to switch between °C and °F.
3. Press the HOLD button (4) to save the setting.
ð SA appears on the display.
ð The setting is saved and the current measurement
result is displayed.
Holding a measured value (HOLD)
1. Press the HOLD button (4) to freeze the currently measured
value.
2. Press the HOLD button again to show the currently
measured values again.
pH measuring device BW10 7