Hach PAH500 Bedienungsanleitung Seite 19

1. Clean the sensor. Refer to
2. Select SENSOR SETUP > [select sensor] > CALIBRATE > 2 POINT MANUAL.
3. If the passcode is enabled in the security menu for the controller, enter the passcode.
4. Select an option.
Option Description
ACTIVE The controller outputs continue to represent the last measured value during the calibration
procedure.
HOLD The controller outputs are held at the last measured value during the calibration procedure.
TRANSFER The controller outputs change to the transfer value during the calibration procedure. Refer to
the SC1000 Controller user manual to change the transfer value.
5. Put the supplied valve in the fitting on the bottom of the sensor. Make sure that the valve is
closed.
6. Rinse the sensor with deionized water as follows:
a. Fill the sensor with deionized water.
b. Open the valve to discard the deionized water from the sensor, then close the valve again.
7. Measure the first calibration standard as follows:
a. Use a pipette to fill the sensor with the first calibration standard.
b. Open the valve to discard the calibration standard from the sensor, then close the valve again.
c. Use a pipette to fill the sensor with the first calibration standard.
d. Put a plug in the fitting on the top of the sensor.
e. Push confirm.
f. Wait approximately 20 seconds, then push confirm.
8. Enter the PAH value of the first calibration standard , then push confirm.
9. Remove the plug from the top of the sensor.
10. Open the valve to discard the calibration standard, then close the valve again.
11. Rinse the sensor with deionized water as follows:
a. Fill the sensor with deionized water.
b. Open the valve to discard the deionized water from the sensor, then close the valve again.
12. Measure the second calibration standard as follows:
a. Put the contents of the ampule into the empty vial. Touch the top edge of the ampule to the
top edge of the vial to pull the liquid into the vial.
b. Use a second pipette to fill the sensor with the second calibration standard.
c. Open the valve to discard the calibration standard from the sensor, then close the valve again.
d. Use the second pipette to fill the sensor with the second calibration standard.
e. Put a plug in the fitting on the top of the sensor.
f. Push confirm.
g. Wait approximately 20 seconds, then push confirm.
13. Enter the PAH value of the second calibration standard , then push confirm.
14. Review the calibration result:
• COMPLETE—The sensor is calibrated and ready to measure samples. The slope and/or offset
values show on the display.
• FAIL—The calibration slope or offset is outside of accepted limits. Do the calibration again.
15. If the calibration result is complete, push confirm.
16. Remove the plug and valve to discard the calibration standard.
17. Discard the open ampule.
18. Discard the contents of the vial.
Clean the sensor on page 22. Keep the sample tubing disconnected.
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