EUTECH INSTRUMENTS WP PCD 650 Instrukcja Obsługi Pobierz pdf (Strona 73)

Instruction Manual PCD 650

3.10 DO Calibration in % Saturation Mode (with ATC)

The PCD 650 can be calibrated quickly and easily in air. In % Saturation, the

meter is able to perform either a one point calibration or a 2 point calibration.

For one point calibration, it is recommended that you perform a 100%

Saturation calibration in saturated air. If you opt for 2 point calibration, you

can calibrate for 100% Saturation in saturated air and 0% Saturation using a

zero oxygen solution.

The PCD 650 meter is capable of measuring barometric pressure with its

built-in pressure sensor. In the event, the pressure reading is inaccurate, you

can calibrate the value from the setup menu. For setting barometric pressure

range, please refer page 86.

3.10.1 To calibrate 100% saturation

1. Switch on the meter and make sure the meter is in % saturation mode.

2. Hold the probe in the air gently with the sensor facing down and press CAL

(F2) to start calibration.

3. The meter shows ‘Dissolved O

Calibration-Rinse Electrode’ screen [Figure

48-(a)] for few seconds to prompt user to rinse electrode with de-ionized

water before calibration

(a) (b)

Figure 58: Saturation Calibration Screens

4. Rinse the probe well with de-ionized water. For best result, blot the end of

the probe dry. Do not touch the membrane.

5. The meter then shows saturation calibration screen [Figure 58-(b)]. The

primary display will show the current value of measurement. Wait for the

reading to stabilize.

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

password. Refer ‘Accessing Calibration mode when password protection

enabled’ in page 42.

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EUTECH INSTRUMENTS WP PCD 650 Instrukcja Obsługi Strona 73