EUTECH INSTRUMENTS 2700 Manual de instrucciones descargar pdf (Pagina 27)

11. Conductivity Calibration (automatic)

For best results, periodic calibration with known accurate standards is

recommended prior to measurement. Calibrate with standards that are close in

value to your intended sample(s).

When using multi-point calibration, perform a calibration in each range that you

expect to use

for best results.

If the conductivity electrode has been stored dry for some time, soaking in alcohol

or cle

an water for a few minutes can help performance.

1) Turn meter on, press

MODE if needed for conductivity measurement mode.

2) Press

CAL if needed to enter calibration mode. Rinse the electrode with

clean water then submerse

into your conductivity standard— either 84 µS, 1413

µS, 12.88 mS, or 111.8 mS. Provide stirring for best results.

3) Use the

up/down arrows to adjust the cell constant manually or press NEXT

to keep the nominal cell constant value and proceed with a typical automatic

calibration (recommended). If adjusting the cell constant manually, press

ENTER after ‘Stable’ appears to confirm the adjustment.

Before and after a manual calibration constant adjustment

4) Wait for the

meter to lock on the calibration standard and press ENTER after

‘Stable’ appears to confirm the calibration point. The calibrated value, Range

(R) that was calibrated and the calculated cell constant are now shown.

Before and after a one-point automatic conductivity calibration with 1.413 mS

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EUTECH INSTRUMENTS 2700 Manual de instrucciones Pagina 27