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4. 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.
5. With the sensor in the process sample, push enter. The measured value is shown. Wait for the
value to stabilize and push enter.
6. With a certified secondary verification instrument measure the concentration value of the sample.
To avoid impurities in the sample take the measurement before the sample enters the flow
chamber. Use the arrow keys to enter this value if different from the value displayed and push
enter.
7. Review the calibration result:
• PASS—the sensor is calibrated and the calibration factor is displayed.
• FAIL—the calibration is outside of accepted limits. Clean the sensor and retry. Refer to
Troubleshooting
8. If the calibration passed, push enter to continue.
9. If the option for operator ID is set to YES in the CAL OPTIONS menu, enter an operator ID. Refer
to
Change calibration options
10. 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.
11. With the sensor still in the process 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.
7.3.6 Exit calibration procedure
If the back key is pushed during a calibration, the user can exit the calibration.
1. Push the back key during a calibration. Three options are shown:
Option
Description
QUIT CAL
Stop the calibration. A new calibration must start from the beginning.
BACK TO CAL Return to the calibration.
LEAVE CAL
Exit the calibration temporarily. Access to other menus is allowed. To return to the
calibration, push the menu key and select SENSOR SETUP.
2. Use the arrow keys to select one of the options and push enter.
7.3.7 Change calibration options
The user can set a calibration reminder or include an operator ID with calibration data from this
menu.
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.
on page 17 for more information.
on page 13.
English 13
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