EUTECH INSTRUMENTS CYBERSCAN CON 1500 CONDUCTIVITY METER Manuál s instrukcemi stáhnout pdf (Strana 10)

Instruction Manual PC 510

5 CALIBRATION

5.1 Important information on meter calibration

When you calibrate your meter, old calibration points are replaced on a “point by point” basis in pH,

and on a “range by range” basis in conductivity or TDS.

For example:

• pH

: if you previously calibrated your meter at pH 4.01, 7.00 and 10.01, and you recalibrate at pH

7.00, the meter retains the old calibration data at pH 4.01 and pH 10.01.

• Conductivity

: if you previously calibrated your meter at 1413 µS in the 0 to 1999 µS range and

you recalibrate at 1500 µS (which is also in the 0 to 1999µS range), the meter will replace the old

calibration data (1413 µS) in that range. The meter will retain all calibration data in other ranges.

• TDS

: If you previously calibrated your conductivity meter at 300 ppm in the 0 to 999 ppm range

and you re-calibrate at 500 ppm (which is also in the 0 to 999 ppm), the meter will replace the old

calibration data (300 ppm) in that range. The meter will retain all calibration data in other ranges.

To view current calibration points:

• pH

: Program P1.0 in the SETUP section 8.2 page 38.

• Conductivity & TDS

: Program P5.0 in the SETUP section, page 32.

To completely recalibrate your meter, or when you use a replacement probe, it is best to clear old

calibration data by resetting the meter.

To reset the meter to its factory defaults:

• pH

: Program P4.0 in the SETUP section, page 32.

• Conductivity & TDS

: Program P9.0 in the SETUP section, page 38.

NOTE

: Resetting the meter will set meter to factory defaults. Conductivity and pH must be reset

separately.

For directions on how to calibrate your meter:

• See section 5.3 on page 7 for pH calibration

• See section 5.4 on pages 9 for conductivity calibration

• See section 5.5 on page 11 for TDS calibration

5.2 Preparing the meter for calibration

Before starting calibration, make sure you are in the correct measurement mode. When you switch on

the meter, the meter starts up in the measurement mode you shut it off in. For example, if you shut the

meter off in pH measurement mode, the meter will be in the pH measurement mode when you switch

the meter on.

Do not re-use calibration solutions after calibration. Contaminants in the solution can affect the

calibration, and eventually the accuracy of the measurements. See section 13 on “Accessories” on

page 44 for information on our high quality calibration solutions.

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