Operation 4
GaugeCalXP Operation Manual
3 Fill the reservoir: The reservoir holds the test fl uid that fi lls the system each time you test a gauge. The test fl uid can be either water or lightweight oil. Wind
the handle fully counter-clockwise, fi ll the reservoir until it is 25% full. Lift the back of the comparator six inches and tap on the side. The internal trapped air
will be removed. The reservoir cap has an o-ring to allow the GaugeCalXP to be transported with the test fl uids in place.
Note: Due to the sealing capabilities of the cap, it must be removed or ajar during operation to allow proper equalization of the syst
em.
4 I
nstall the gauges:
Slowly turn the handle of the GaugeCalXP clockwise until the fl uid is visible at the top of the MPM-MPM fi tting. Connect the MPM-MPM
fi tting directly to reference gauges equipped with a CPF female connection or attach an appropriate adapter. Repeat for the device under test.
The GaugeCalXP Pressure Comparator can be confi gured with a Crystal reference gauge (in this example, an XP2i) and a gauge to be tested in either of the two ports.
The above example also has the optional Fine Adjust and 1/4 female NPT Quick Test adapter installed.
Note: We recommend installing the Crystal reference in the rear port and the device under test in the front port of the GaugeCalXP.
5 If you are using CPF quick test fi
ttings (MPF-1/4QTF) screw them onto the installed MPM-MPM fi ttings, fi nger-tight.
Although wrench fl ats are provided on the quick test fi tting, these are only intended to help remove the adapter.
!
CAUTION: Never use a wrench to tighten a quick connect adapter.
6 Slowly turn the handle clockwise until the fl
uid is visible at the same level as the MPF-1/4QTF o-ring, then attach your device under test. Repeat for the
reference.
7 Turn the handle counter clockwise until it stops in the fully vented position.
8
Set up the Crystal reference gauge: Turn on the Crystal reference gauge, and then select the pressure units required for the gauge to be tested. (For de-
tailed operating instructions, refer to the documentation you received with your Crystal Engineering reference.)
9 Press the
(zero) button on your Crystal reference gauge.
(8 pages)
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