719 Series
Users Manual
10
Set Maximum Pressure Limit
To set a maximum pressure limit for the internal electric
pump:
1. Press C then LIMITS and the limit setting is
displayed.
2. Use
Z to increase or Y the limit setting.
3. Press ENTER when finished.
When the calibrator power is cycled, the limit setting is
retained.
Note
To prevent pressure module damage, operation
of the internal electric pump is automatically
limited to the maximum rating of the module. For
1 inH
2
O, 10 inH
2
O and 1 psi modules, the internal
pump is disabled.
Calibrating a P/I Transmitter
To calibrate a P/I (pressure to current) transmitter, apply a
pressure to the transmitter and measure the transmitter’s
current loop output. Pressure can be applied with the
Calibrator’s internal pump or with an external pump.
W Warning
To avoid a violent release of pressure or
vacuum, always depressurize the system
slowly using the pressure/vacuum release
control before detaching any pressure line.
Using the Internal Pump
The internal pump can provide the rated pressure for the
Calibrators.
The preferred use for the internal pump is shown in Figure
4, where the Calibrator displays pressure measured with
the internal sensor and provided by the internal pump.
The internal pump can also be used with certain Fluke 700
Series Pressure Modules. In this case, pressure measured
by the Pressure Module is displayed by the Calibrator.
Appropriate pressure modules for each Calibrator model
are identified in Table 5. Figure 5 shows the internal pump
being used with a pressure module.
Note
If both a pressure module and the internal sensor
are connected, the Calibrator displays ONLY the
pressure module measurement.
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