5BChapter Two: Installation
56BSetup
27
Fittings
The DMA unit is available with the following fittings:
•
½” diameter (12.7 mm) tubulation
•
Swagelok
®
8-VCR
®
(female)
•
Mini-CF (rotatable)
•
NW-16-KF
Mounting Instructions
Mount the transducer with the inlet port pointing (vertically) downward. The transducer port can
easily carry the weight of the transducer.
Although the unit can be mounted in any orientation, mounting it as suggested allows any foreign
matter entering the pressure port to fall away from the diaphragm.
Isolate the unit from vibration as much as possible. When not subject to gas damping at low
pressure, the diaphragm may become susceptible to resonance. The low range transducers
(
≤
1 Torr)
are most sensitive and you should isolate them from any vibration that exists.
Remember to isolate the vibration through the cable as well as through the port.
For pressure ranges less than 1 Torr, the unit should be mounted in the orientation specified in the
mode code. (Refer to
Appendix B: Model Code Explanation,
page 91.)
Mount the unit vertically if the model code has the form:
DMAXXXXXXXXVXXX
Mount the unit horizontally if the model code has the form:
DMAXXXXXXXXHXXX
Contact MKS if you require assistance.
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