Measure Pressure; Media Compatibility - Fluke 721Ex User Manual

Pressure calibrator
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Measure Pressure

To measure pressure, connect the Product with the
correct fitting and select a pressure port. The Product has
two internal sensors. Make sure to choose the sensor
based on working pressures and accuracy.
Warning
To prevent personal injury:
Pressure sensors can be damaged
and/or personnel injury can occur due to
improper application of pressure. Refer
to Table 4 for information on
overpressure and burst pressure ratings.
Vacuum should not be applied to any
gauge pressure sensor. The Product
display shows "OL" when an
inappropriate pressure is applied. If "OL"
is shown on any pressure display, the
pressure should be reduced or vented
immediately to prevent Product damage
or possible personnel injury. "OL" is
shown when the pressure exceeds 110 %
of the nominal range of the sensor or
when a vacuum in excess of 2 PSI is
applied on gauge range sensors.
Push Z to zero the pressure sensor
when vented to atmospheric pressure.
To ensure accuracy of the Product, the Product
must be zeroed before a device is calibrated.
See the "Zero Function Use" section.

Media Compatibility

The Product has a media-isolated sensor to prevent
sensor contamination. Whenever possible, clean dry air is
the media of choice. If this is not possible, make sure the
media is compatible with the sensor. For the 16 PSIG and
36 PSIG range, use media compatible with Silicon, Pyrex,
RTV, Gold, Ceramic, Nickel, and Aluminum. For all other
ranges, use media compatible with 316 Stainless Steel.
Pressure Calibrator
Measure Pressure
Note
25

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