INFICON Composer Elite Gas Concentration Monitor - Manual (Page 24)

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PN
07
4-
56
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P1
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Composer Elite Operating Manual
1.5.3 Acoustic Sensor
Size . . . . . . . . . . . . . . . . . . . . . . . . . 124 mm (4.88 in.) between VCR-4 seal
surfaces. Maximum outline dimensions
W x H x D (with gaskets and caps)
77.7 x 149.9 x 185.4 mm
(3.06 x 5.90 x 7.30 in.)
Measurement Principle . . . . . . . . . . Precursor concentration determined by
precision measurement of speed of sound in
a temperature controlled volume.
Measurement quality is enhanced by a
multi-chamber Helmholtz type resonator
Materials in Contact with Process Gas
Sensor Body. . . . . . . . . . . . . . . . 316L Stainless Steel
Tubing . . . . . . . . . . . . . . . . . . . . Seamless 316L SS and automatic butt weld
fittings
Isolation Diaphragms . . . . . . . . . 0.017 mm (0.00067 in.) Inconel ® X-750,
sealed with Inconel 718 gold plated c-rings
Connection to Process
Gas System . . . . . . . . . . . . . . . . . . . Swagelok
® VCR ® -4 male; inlet and outlet
inline 124 mm (4.88 in.) seal face to seal
face, near zero clearance required
Leak Test Service
Port Connection . . . . . . . . . . . . . . . . Swagelok VCR-2 female
Swept Volume . . . . . . . . . . . . . . . . . Resonant chamber: 8.9 cc
Connecting Inlet and Outlet tubes
(combined volume): 3.7 cc
Total Swept Volume . . . . . . . . . . 12.6 cc
Operating Temperature Range. . . . . 5°C minimum above ambient, range 30°C to
65°C, heat mode only
Maximum Leak Rate . . . . . . . . . . . . 1x10
-9
cm
3
/s helium
Electrical Connection . . . . . . . . . . . . 15-pin high-density D-sub
to Sensor Control Unit
Required Connector Clearance . . . . Required clearance 76.2 mm (3 in.) one side
for electrical connector removal or insertion