3 Basic Operation
45
4.
In the parameter selection screen, move the cursor to “Temp”, then press the
ENTER key.
5.
Press the up (
) and down (
) keys to set the calibration value - the temperature of
the water containing the submerged sensor probe.
6.
Check that “Measurement value” has stabilized, then press the ENTER key to start
calibration.
Calibration is finished when the message “Cal complete. CNT to measure.” appears.
pH calibration
Note
You can select one calibration point (zero-point calibration) or two calibration points (zero-point
calibration and span calibration). Carry out two calibration procedures to ensure good measurement
precision throughout all measurement ranges.
1.
Calibrate the zero point. Wash the transparent calibration cup 2 or 3 times with
deionized water, then fill it to the reference line with pH 6.86 standard solution.
2.
Wash the sensor probe 2 or 3 times in deionized water to remove any dirt, then
submerge the sensor probe in the transparent calibration cup.
3.
Press the control unit’s CAL key to set the calibration mode.
4.
Press the down (
) key to move the cursor to "Manual Calibration", then press the
ENTER key.
Содержание U-51
Страница 1: ...CODE GZ0000230552H ...
Страница 24: ......
