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Flashcards in Leak Testing Deck (25):
1

Equivalent to pressure times volume divided by time

Leakage rate

2

Unit measure for leakage rate

SI

3

Term requires at the leakage flow be too small to be detected

Leaktight

4

A measure of concentration or flow rate of tracer gas that gives a minimal measurement leak signal

Leak detector sensitivity

5

Refers to the minimum detectable amount of leakage that will occur in the specific period of time under specified leak test conditions

Leak test sensitivity

6

Leak testing can be divided into three main categories:

Leak detection, leak location, and leak measurement

7

Two classifications of leakage rate measurement techniques involving the use of tracer gases are

Static and dynamic leak testing

8

The chamber into which the trace gas leaks in accumulates is sealed and is not subjected to pumping to remove the accumulated gases

Static leak testing

9

The chamber into which tracer gas leaks is pump continuously and intermittently to draw the leaking tracer gas through the leak detector instrumentation

Dynamic leak testing

10

Directs sniffing with no significant halogen contamination in the atmosphere

Method A

11

Direct sniffing with significant halogen contamination in the atmosphere

Method B

12

Shroud test (halogen leak testing)

Method C

13

Accumulation test

Method E

14

Air curtain shroud test

Method D

15

Mode of gas flow that occurs in leaks leaking at atmospheric or higher pressure under pressure testing conditions

Viscous flow

16

Mode gas flow that usually occurs in leaks under vacuum testing conditions

Molecular flow

17

Mode of gas flow that occurs under test conditions immediate between vacuum and pressures higher than atmospheric pressure

Transitional flow

18

The most sensitive leak testing technique is

Mass spectrometer test

19

Leak testing establishes differential pressure's between

Test object and environment

20

Assuming no significant leakage, if the temperature increased during a pressure dropped leak test, the pressure in the system under the test would

Increase

21

If the sensitivity of the halogen leak detector is constant throughout the test then

The instrument in test procedure were capable of detecting leakage of a certain size during the test

22

All leak detection methods are dependent upon

Gas or fluid flow

23

The release of gas for materials in a vacuum is best defined as

Outgassing

24

Used for leak location and leak rate

Halogen diode detector

25

This property would not affect the performance of a bubble solution

Contrast