User Guide

Instruction Manual CyberScan pH 11 / 110
15
4.4 mV Calibration (Offset) (Only for pH 110)
With pH 110 meter, you can perform a calibration or an
offset of up to ±150 mV. Note: For Oxidation reduction
Potential (ORP) or Redox measurements, an ORP
electrode must be used.
1. While in the measurement function, press
MODE to enter the mV mode. The mV indicator
appears in the upper right hand corner. See
figure at right.
2. Press the CAL/MEAS key. The CAL indicator
appears above the primary display. The primary
display shows the relative mV reading and the
secondary display shows the absolute mV value.
• If you have never calibrated relative mV or if the
meter has been reset, the value shown in the
primary display is the same as the absolute mV
value.
• “R.” annunciator will appear once mV calibration
is performed, an indication of mV offset.
3. Press the MI/▲ or MR/▼keys to enter the
relative mV value that matches your desired
reading.
4. Press the HOLD/ENTER key to confirm the
reading and to return to the measurement mode.
The primary display now shows the relative mV
reading.
NOTES:
1. To view the mV offset value, see section 9.4.2 - View mV
Offset on page 40.
2. To reset all calibration and offset values in memory to the
factory default settings, see section 9.6.1 - Calibration Reset
page 42.
Figure 13: mV calibration
se
q
uence
MEAS
ATC
°C
mV
133.4
24.5
CAL
mV
133.4
133.4
mV
155.0
133.4
CAL
READY
R.mV
155.0
24.5
MEAS
READY
A
TC
°C
MEAS
CAL
ENTER
HOLD
MI
MR