EUTECH INSTRUMENTS CYBERSCAN DO 5000 DO METER Manual de instrucciones descargar pdf (Pagina 15)

Instruction Manual PD 300

To Calibrate pH:

1. If necessary, press the MODE key to select

pH mode. The pH indicator appears in the

upper right hand corner of the display.

2. Rinse the probe thoroughly with de-ionised

water or a rinse solution. Do not wipe the

probe; this causes a build-up of electrostatic

charge on the glass surface.

3. Dip the probe into the calibration buffer. The

end of the probe must be completely

immersed into the sample. Stir the probe

gently to create a homogeneous sample.

NOTE

The temperature element is in the DO electrode. For

temperature compensated readings, dip the DO

electrode into the calibration buffer as well.

4. Press CAL/MEAS to enter pH calibration

mode. The CAL indicator will be shown. The

primary display will show the measured

reading while the smaller secondary display

will indicate the pH standard buffer solution.

5. Wait for the measured pH value to stabilise.

See Figure 5.

6. Press ENTER to confirm calibration. The

meter is now calibrated to the current buffer.

The lower display scrolls through the

remaining buffer options.

• For multi-point calibration, go to step 7.

• For one-point calibration, go to step 9.

Figure 6: pH Calibration

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EUTECH INSTRUMENTS CYBERSCAN DO 5000 DO METER Manual de instrucciones Pagina 15