Hanna-instruments HI 2212 Manual de usuario descargar pdf (Pagina 22)

All the instruments are factory calibrated for mV.

Hanna’s ORP electrodes are interchangeable and no mV calibration is

needed when they are replaced.

If the mV measurements are inaccurate, mV recalibration should be

performed.

For an accurate recalibration, contact your dealer or the nearest

Hanna Customer Service Center, or follow the instructions below.

A two-point calibration can be performed at 0.0 mV and 1800.0 mV.

• Attach to the BNC connector a mV simulator with an accuracy of

±0.1 mV.

• With the instrument off, press and hold down the CAL & keys,

then power on the instrument. The “CAL” tag will appear and the

secondary LCD will show “0.0 mV”.

• Set 0.0 mV on the simulator.

When the reading is stable and close to the selected calibration

point, “READY” tag will appear and “CFM” tag will blink.

• Press CFM to confirm. The secondary LCD will display “1800 mV”.

• Set 1800.0 mV on the simulator.

When the reading is stable and close to the selected calibration

point, “READY” tag will appear and “CFM” tag will blink.

• Press CFM to confirm. The instrument returns to measurement

mode.

Note: If the reading is not close to the selected calibration point,

“WRONG” tag will blink. Verify calibration condition or contact

your vendor if you can not calibrate.

V CALIBRATIONV CALIBRATION

V CALIBRATION

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Hanna-instruments HI 2212 Manual de usuario Pagina 22