Crystal GaugeCalXP User Manual

Page 6

Operation



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 system.

4 Install 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.

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.

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.

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.)

Press the

(

zero

)

button on your Crystal reference gauge.