Thermo Fisher Scientific CyberScan pH 300/310 - Manual (Page 15)

12
3.4 Relative mV Calibration
10. 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.
11. 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.
NOTE: 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.
NOTE: “R.” annunciator will appear once mV
calibration is performed, an indication of
mV offset.
12. Press the MI/▲ or MR/▼keys to enter the relative
mV value that matches your desired reading.
13. Press the ENTER key to confirm the reading and to
return to the measurement mode. The primary
display now shows the relative mV reading.
NOTES:
To view the mV offset value, use the SETUP mode
Program P3.1. See page 27 for instructions.
To reset all calibration and offset values in memory to the
factory default settings, use:
• In pH 300 meter : SETUP Program P 5.0. See page
34.
•
In pH 310 meter : SETUP Program P 6.0. See page
37.
Figure 11 - mV calibration