User Guide

Instruction Manual pH 510/ Ion 510

3.3 mV Calibration

1. Make sure the meter is on and if necessary, press the MODE key to

select mV mode. The [mV] indicator appears in the upper right-hand

corner of the display.

2. Press the CAL/MEAS key. The [CAL] indicator appears above the

upper display that displays the relative mV reading. The lower

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 upper display is the same as the

absolute mV value. The range of adjustment is -1999 mV to 1999

mV (resolution is 1 mV); of which from -199.9 to 199.9 mV the meter

gives you a resolution of 0.1 mV.

3. Press ¿ or À key to enter the relative mV value that matches your

desired reading.

4. Press the ENTER key to confirm the reading and the meter

automatically returns to the measurement mode. The upper display

now shows the relative mV reading. The [R.mV] indicator appears in

the upper right hand corner.

NOTE: New mV calibrations will override existing stored mV

calibration data. The meter retains stored mV calibrations even when

the meter is turned off.