Hach Polymetron 2582sc Manual Del Usuario página 19

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 a precision certified barometer, measure the atmospheric pressure where the analyzer is
located. Use the arrow keys to enter this value, then push OK.
6. Turn the valve on the sample supply line to stop the sample flow.
7. Remove the sensor clamping nut from the top of the flow chamber. Then, remove the sensor from
the flow chamber.
8. Moisturize the wadding in the supplied calibration cap with a few drops of water.
9. Put the sensor vertically in the calibration cap with the membrane down.
10. Push OK.
11. Wait for the value to stabilize and push OK.
Note: The screen may advance to the next step automatically.
12. Review the calibration result:
• "Calibration: Pass"—The sensor is calibrated and ready to measure samples. The slope and/or
offset values are shown.
• "Calibration failed." —The calibration slope or offset is outside of accepted limits. Repeat the
calibration. Clean the sensor if necessary.
13. Push OK to continue.
14. Install the sensor in the flow chamber.
15. Turn the valve on the sample supply line to start the sample flow.
16. Push OK.
The output signal returns to the active state and the measured sample value is shown on the
measurement screen.
6.4.6 Calibration with the process sample
Calibrate the sensor while the sensor is installed in the process. As an alternative, remove the sensor
from the process and put the sensor in a grab sample collected from the process.
Note: Before the sensor is calibrated for the first time, complete a zero calibration.
1. Select the main menu icon, then select Devices. A list of all of the available devices shows.
2. Select the sensor and select Device menu > Calibration.
3. Select Sample calibration.
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. Put the sensor in the process or a collected grab sample, then push OK.
The measured value is shown.
6. Wait for the value to stabilize and push OK.
Note: The screen may advance to the next step automatically.
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