Hach Polymetron 2582sc Manual Del Usuario página 20

7. Measure the concentration value of the sample with a secondary verification instrument. To avoid
contaminants in the sample, take the measurement before the sample enters the flow chamber.
Use the arrow keys to enter the measured value and push OK.
8. 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.
9. Push OK to continue.
10. Push OK.
The output signal returns to the active state and the measured sample value is shown on the
measurement screen.
6.4.7 Exit calibration procedure
1. To exit a calibration, push the back icon.
2. Select an option, then push OK.
Option
Quit calibration
Return to calibration Return to the calibration.
Leave calibration
6.4.8 Reset the calibration
The calibration can be reset to the factory default settings. All sensor information is lost.
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 Reset calibration to defaults, then push OK.
4. Push OK again.
Section 7 Maintenance
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Fluid pressure hazard. Removal of a sensor from a pressurized vessel can be dangerous. Reduce
the process pressure to below 7.25 psi (50 kPa) before removal. If this is not possible, use extreme
caution. Refer to the documentation supplied with the mounting hardware for more information.
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective
equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
20 English
Description
Stop the calibration. A new calibration must start from the beginning.
Exit the calibration temporarily. Access to other menus is allowed. A calibration for a
second sensor (if present) can be started.
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