INFICON T-Guard Leak Detection Sensor - Manual (Page 20)

18
Description
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(1
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In GROSS measurement mode, V1 and V3 are open, V2 is closed (see Fig. 4-10 ).
This way, the Wise Technology™ Sensor only receives little helium from the measu-
rement line and normally even less helium from the reference line.
Other valve configurations than described above are not used by the software and
cannot be set by the user.
Fig. 4-10 Valve configuration in GROSS mode
Item Description Item Description
1 Inlet “IN” 8 Pressure gauge p1
2 Reference “Ref” 9 Pump
3 Filter 2 10 Pump connector “OUT”
4 Valve V
3
11 Throttle 3
5 Valve V
2
12 Throttle 1
6 Throttle 2 13 Valve V
1
7 Wise Technology™ Sensor 14 Filter 1