EUTECH INSTRUMENTS WP PCD 650 Instrukcja Obsługi Pobierz pdf (Strona 61)

Instruction Manual PCD 650

3.5 Ion Calibration

Use standard solutions of 0.001, 0.01, 0.1, 1, 10, 100, 1000 & 10000 ppm for

calibration. You need to calibrate minimum of 2-points. Follow the instruction in

‘Prepare the meter for measurement’ section in page 40.

1. Switch on the meter. Make sure the meter is in Ion measurement mode.

2. Press CAL (F2) to go to calibration mode.

3. The meter shows ‘Calibration-Rinse Electrode’ screen [Figure 41-(a)] few

seconds and then shows the Ion calibration screen [Figure 46-(b)]

(a) (b)

Figure 46 : Ion calibration screens

4. Dip the ISE in calibration solution. The tip of the probe must be completely

immersed into the solution. Stir the probe gently to create a homogeneous

solution.

5. The calibration screen displays two readings. The upper display shows the

lowest calibration point 0.001 ppm. The lower display shows the absolute

mV reading of the solution without any calibration (default reading). Use

& keys to select the required calibration point in the upper display.

Note: If there is an existing ion calibration in the meter, you will be given

two options. [Figure 46-(a)]

 Clear the previous calibration (CLR-C) – choose this if you

wish to delete all previously calibrated points and re-calibrate

with a new type of ion.

 Retain the previous calibration (NEXT) – choose this if you

wish to retain previously calibrated points and re-calibrate new

oints

(

or overwrite existin

oints

)

with same t

e of ion.

Note: If the meter is password protected, you will be prompted to enter a

password. Refer ‘Accessing Calibration mode when password protection

enabled’ in pa

e 42.

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EUTECH INSTRUMENTS WP PCD 650 Instrukcja Obsługi Strona 61