FLUKE 718 30G User Manual for the Fluke 718-30US Pressure Calibrator with Pressure Vacuum Pump, -12 to 30 PSI

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Pressure Calibrator

Calibrating a P/I Transmitter

XW Warning

If both a pressure module and the internal

sensor are connected, the Calibrator displays

ONLY the pressure module measurement.

To use the Calibrator’s internal pump, refer to Figure 3 and

perform the following steps:

1. Depressurize and drain the line before connecting the

Calibrator.

2. Connect the pressure transmitter to the Calibrator

internal sensor as shown in Figure 4 (for internal

pressure sensor measurements) or Figure 5 (for

pressure module measurements.)

Note

To avoid leaks, use Teflon tape or similar sealant

on all pressure connections.

3. Make sure the pressure/vacuum switch is in the

desired position. Forward (clockwise) is for pressure;

backward (counter-clockwise) is for vacuum.

4. Turn the pressure/vacuum release control backward

(counter-clockwise) to vent pressure/vacuum from the

pump.

5. Press

Z to zero the pressure display.

6. Turn the fine adjustment knob to mid-range.

7. Turn the pressure/vacuum release control forward

(clockwise) to close the release valve.

8. Work the pump handle in and out to apply

incrementally larger pressure/vacuum changes.

Shorten the stroke to apply smaller increments of

pressure/vacuum change.

9. To make very small pressure/vacuum changes, use

the fine adjustment knob.

Note

This knob adjusts a small internal reservoir to

vary the total volume. With larger external

pressure/vacuum volumes, this control will adjust

pressure or vacuum within a smaller range.

10. Depressurize the system before disconnecting the

pressure line.

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FLUKE 718 30G 718-30US Pressure Calibrator with Pressure Vacuum Pump, -12 to 30 PSI