Hach Polymetron 9 82 Series, Руководство пользователя, Страница: 14 / 28

12. Return the sensor to the process and push enter . The output signal returns to the active state
and the measured sample value is shown on the measure screen.
Note: If the output mode is set to hold or transfer, select the delay time when the outputs return to the active
state.
7.3.4 Calibration in air
Air calibration is recommended for best accuracy and repeatability.
1. Remove the sensor from the process.
2. Push the menu key and select SENSOR SETUP>CALIBRATE.
3. If the pass code is enabled in the security menu for the controller, enter the pass code.
4. Select AIR CAL and push enter .
5. Select the option for the output signal during calibration:
Option Description
ACTIVE The instrument sends the current measured output value during the calibration procedure.
HOLD The sensor output value is held at the current measured value during the calibration procedure.
TRANSFER A preset output value is sent during calibration. Refer to the controller user manual to change
the preset value.
6. Using a precision certified barometer, measure the atmospheric pressure where the analyzer is
located. Use the arrow keys to enter this value if different from the value displayed and push
enter .
7. Moisturize the wadding in a calibration cap with a few drops of water. Place the sensor vertically
in the calibration cap with the membrane downwards. Tighten the calibration cap and push
enter .
8. Wait for the value to stabilize and push enter .
9. Review the calibration result:
• PASS—the sensor is calibrated and the calibration factor is displayed.
• FAIL—the calibration is outside of accepted limits. Repeat the calibration with fresh reference
solutions. Refer to Troubleshooting on page 17 for more information.
10. If the calibration passed, push enter to continue.
11. If the option for operator ID is set to YES in the CAL OPTIONS menu, enter an operator ID.
12. On the NEW SENSOR screen, select whether the sensor is new:
Option Description
YES The sensor was not calibrated previously with this controller. The days of operation and previous
calibration curves for the sensor are reset.
NO The sensor was calibrated previously with this controller.
13. Return the sensor to the process and push enter .
The output signal returns to the active state and the measured sample value is shown on the
measure screen.
Note: If the output mode is set to hold or transfer, select the delay time when the outputs return to the active
state.
7.3.5 Calibration with the process sample
The sensor can remain in the process sample.
1. Push the menu key and select SENSOR SETUP>CALIBRATE.
2. If the pass code is enabled in the security menu for the controller, enter the pass code.
3. Select SAMPLE CAL and push enter .
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