Wika GCS-1 Bedienungsanleitung PDF herunterladen (Seite 15)

15WIKA operating instructions gas cylinder scale model GCS-1

11145676.05 11/2011 GB/D/F/E

After the adjustment, check that the system is functioning correctly.

Recommended recalibration cycle: 1 year

7. Adjustment of zero point / span

Preparation

■

In order to access the zero point and span potentiometers, unscrew the protective

cap using a screwdriver (see gure A).

■

Introduce a reference mass which is at least 3 x as accurate as the given accuracy.

Zero point

■

Remove the load from the gas cylinder scale.

■

By adjusting the signal to 4 mA, the zero point can be set (see gure B).

Span

■

Set the span by loading the scale with the appropriate reference mass and adjusting

the signal to 20 mA.

■

Check the zero point.

■

If the zero point is not right, repeat the procedure.

■

Screw the sealing cap with seal back in, in order to close the potentiometer entry.

7. Adjustment of zero point / span

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Wika GCS-1 Bedienungsanleitung Seite 15