Inficon T-Guard Leak Detection Sensor Manual de usuario descargar pdf (Pagina 51)

Operation 49

jina85e 5.fm Technical Handbook(1112)

5.3.3 Continuous Mode

The Continuous mode is only developed for experts in the field of helium leak

detection.

Notice Use the STOP switch or even Standby mode when you do not need a

measurement signal from T-Guard™ Leak Detection Sensor. Standby

mode will further clean up the Wise Technology™ Sensor and enlarge its

lifetime.

In Continuous mode, you are able to get a continuous signal from the Wise Techno-

logy™ Sensor after pressing START. Pressing STOP switches the valves in a way

that the reference line will be measured. G

ROSS and FINE modes can and must be

selected by the user. The T-Guard™ Leak Detection Sensor will not deliver a leak

rate signal in this mode. Therefore, it will not be possible to set trigger values in Conti-

nuous mode.

It is in the duty of the user to interpret the current signal. The sensor current changes

by 1.5 x 10

-7

A per mbar of helium before the sensor.

Fig. 6-12 Recommended set-up for Carrier Gas mode

Item Description Item Description

1 1,000 - 100,000 sccm 6 Air inlet, outside air

2 Dry pump or 7 Test sample

Flow controlled fan 8 Fan

3 Pump exhaust far away from chamber 9 Testing chamber

4 Fore pump exhaust air far away from the

10 Measuring hose connected to

pump outlet

chamber

5 Reference line 11 T-Guard™

Leak Detection Sensor

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 84 85

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Inficon T-Guard Leak Detection Sensor Manual de usuario Pagina 51