Setra-system Model 370 Manual de usuario descargar pdf (Pagina 34)

lI.2 SPAN CALIBRATION

To perform the span calibration on the Model 370, it is necessary to apply both the

zero and the full scale pressures, as in the following procedure:

1. Make certain the gauge is in a stable temperature environment for several

hours before calibration.

2. Press SETUP, then press SPAN. The display will read "APPLY" and the

pressure required for

zero

calibration.

3. Apply the indicated pressure from a high accuracy standard.

4. Press SETUP. The display will read "APPLY" and the pressure required for

full scale

calibration.

5. Apply the indicated pressure from a high accuracy standard.

6. Press SETUP. The gauge will take data, adjust its' zero and span calibra-

tions, and return to normal display mode.

If the new zero and full scale data is too far from the factory calibration, the gauge will

display "UnAbLE". Verify the applied pressures. If they are correct, contact a Setra

Applications Engineer for assistance.

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Setra-system Model 370 Manual de usuario Pagina 34