Pressure Measurement; Measuring And Sourcing Current (4 - WIKA CPH7650 Betriebsanleitung

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6. Commissioning, operation

6.8 Pressure measurement

For pressure calibration, connect the test item to the test item connection. Choose a
reference sensor that is suitable for the pressure range and accuracy.
CAUTION!
Pressure sensors may be damaged and/or injuries may occur to
the personnel due to improper application of pressure. For a better
understanding with respect to overpressure and burst pressure, follow
the specifications laid down in these operating instructions (see chapter
3 "Specifications").
The calibrator display will indicate "OL" when an inappropriate pressure is
applied. As soon as "OL" is observed on any pressure display, the pressure
should be reduced immediately to prevent damage or possible physical
injury. "OL" is displayed if the pressure exceeds the nominal range by 110 %.
Use the ZERO button to zero the pressure sensor once it is vented to
atmospheric pressure.
Media compatibility
CAUTION!
The calibrator should only be used with clean, dry air! To prevent
contamination by the test items, the use of a dirt trap is recommended (see
chapter 10 "Accessories")!
6.9 Measuring and sourcing current (4 ... 20 mA)
To measure current, use the input terminals via the display on the calibrator and select
the mA function. Current is measured in mA and percentage of the measuring range. The
measuring range of the calibrator is set to 0 % at 4 mA and 100 % at 20 mA.
WIKA operating instructions, model CPH7650
EN
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