User Guide

Instruction Manual CyberScan pH 11 / 110
16
4.5 Temperature Calibration
The temperature sensor is factory calibrated. Calibrate
the temperature probe only if you suspect temperature
errors may have occurred over a long period of time or if
you have a replacement temperature probe. This
procedure offers offset adjustment of probe to ensure
more accurate temperature measurement.
1. Make sure the ATC probe (or temperature
connector of the electrode) is connected to the
phono-socket (see Figure 6).
2. Switch the meter on. The ATC annunciator will
appear at the right-hand side of the LCD. Press
the MODE key to select pH mode.
3. Press the CAL/MEAS key to enter pH
calibration mode. The CAL indicator will appear
above the primary display.
4. While in pH calibration mode, press the MODE
key to enter temperature calibration mode. The
primary display shows the measured
temperature reading according to the last set
offset
1
and the secondary display shows the
factory calibrated temperature measurement.
5. Dip the ATC probe (or electrode) into a solution
of known temperature (i.e. a temperature bath).
Allow time for the temperature probe to
stabilise.
6. Scroll with the MI/▲ or MR/▼ keys to set the
correct temperature value (i.e. the temperature
of the temperature bath). You can adjust the
reading in increments of 0.1°C.
7. Once you have selected the correct
temperature, press the HOLD/ENTER key. The
meter automatically returns to pH measurement
mode. See Figure 14.
NOTES:
You can offset the temperature reading up to ±5°C from
original reading.
To exit this program without confirming the temperature
calibration value, DO NOT press ENTER. Press CAL/MEAS instead.
1
It displays the value being measured currently, offset by the last calibration.
MEAS
pH
ATC
°C
7.16
22.3
MEAS
pH
ATC
°C
7.16
22.0
CAL
pH
pH
7.16
7.00
CAL
A
TC
°C
22.3
22.3
ATC
°C
22.0
22.3
CAL
READY
MEAS
CAL
MODE
MIMR
ENTER
HOLD
Figure 14: Temperature
calibration