Temperature calibration, Zero calibration procedure, Temperature calibration zero calibration procedure – Hach-Lange POLYMETRON 9523 User Manual User Manual
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1. Push the menu key and select SENSOR SETUP>[Select Sensor]>CALIBRATE.
2. If the pass code is enabled in the security menu for the controller, enter the pass code.
3. Select CELL CONSTANT and push enter.
4. Contacting conductivity sensors: Select the cell K range for the sensor (0.01, 0.1 or 1.0) then
enter the actual K value as printed on the label attached to the sensor.
Inductive conductivity sensors: Enter the actual K value as printed on the label attached to the
sensor.
Temperature calibration
It is recommended to calibrate the temperature sensor once a year. Calibrate the temperature sensor
before calibrating the measurement sensor.
1. Measure the temperature of the water with an accurate thermometer or independent instrument.
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 1 PT TEMP CAL and push enter.
5. The raw temperature value is displayed. Push enter.
6. Enter the correct value if different from that displayed and push enter.
7. Push enter to confirm the calibration. The temperature offset is displayed.
Zero calibration procedure
Use the zero calibration procedure to define the unique zero point of the sensor.
1. Remove the sensor from the process. Wipe with a clean towel to make sure the sensor is dry.
2. Push the menu key and select SENSOR SETUP>[Select Sensor]>CALIBRATE.
3. If the pass code is enabled in the security menu for the controller, enter the pass code.
4. Select ZERO 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. Place the sensor in air, push enter.
7. Review the calibration result:
• PASS—the sensor is calibrated and ready to measure samples.
• FAIL—the calibration is outside of accepted limits. Clean the sensor and retry. Refer to
on page 32 for more information.
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
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.
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