Sper scientific 840087, Инструкция по эксплуатации

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5
III. OPERATING INSTRUCTIONS
A. PH CALIBRATION PROCEDURES
The meter is factory calibrated to simulate the ideal pH electrode
(0 mV at pH 7.00 and 177.4 mV at pH4, based on an ambient
temperature of 77°F/25°C ). Follow the two-point calibration procedures
to ensure the highest degree of accuracy.
Two Point Calibration
1. Connect the pH electrode to the BNC SOCKET .
2. Press the
ON
button and place the pH electrode into the pH7 solution.
3. Using a small screw driver, turn the
CAL. PH7
adjustment until the
display indicates 7.00.
4. Rinse the electrode in distilled water and shake dry.
5. Next, place the electrode into the pH4 solution.
6. Turn the
SLOPE PH4 PH10 adjustment until the display
indicates 4.00.
7. Rinse the electrode again.
Single Point Calibration
1. Connect the pH electrode to the BNC SOCKET .
2. Press the ON button and place the pH electrode into the pH7 solution.
3. Using a small screw driver, turn the CAL. PH7 adjustment until the
display indicates 7.00.
4. Rinse the electrode in distilled water.
B. PH MEASUREMENT PROCEDURES
1. Connect the pH electrode and press the
ON
button.
2. Calibrate the meter (see above instructions).
3. Place the pH electrode into the solution to be measured.
4. The pH level of the solution is displayed.
5. To freeze the displayed value, press the
HOLD button.
To cancel this function, press the HOLD button again.
6. Rinse the electrode in distilled water after each use.
7. Press the
OFF button.