EUTECH INSTRUMENTS WP PCD 650 Manuál s instrukcemi stáhnout pdf (Strana 71)

Instruction Manual PCD 650

3.9 TDS Calibration

You can commence calibration in the TDS mode by using the conductivity

calibration method and after setting the correct TDS factor. For more information

regarding TDS conversion factor determination, please refer to page 106. For the

rest of the calibration process, follow steps as mentioned in the section of manual

calibration on page 55. Use a standard solution of known value for calibration. Use

the single-point standardization option to measure samples that close in value and

multi-point standardization to measure wide range of samples.

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

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

3. The meter shows ‘Calibration-Rinse Electrode’ screen [Figure 48-(a)] few

seconds and then shows the cell constant adjustment screen for TDS [Figure

56(a)].

(a) (b)

Figure 56 : TDS Cell constant adjustment & TDS calibration screen

4. The upper display of the TDS cell constant screen [Figure 56-(a)] shows the

TDS cell constant of your solution & lower display shows the measured value

of the solution with adjusted cell constant. Press

& keys to adjust the cell

constant for your custom solution in upper display.

5. Press ENTER key to confirm the entered value and to go to TDS calibration

screen.

6. The screen shows two readings [Figure 56-(b)]. The upper display shows the

TDS reading of the solution with respect to previous calibration (if any) & lower

display shows the TDS reading of the solution without any calibration. Use

keys to adjust the upper display of the TDS value of your custom solution.

7. Press ENTER key to confirm the entered value.

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 Manuál s instrukcemi Strana 71