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Figure 2 is an example of the test decision tree and statements you can make based on the test results. It is
based on a detector with the stated sensitivity of 3.0± 0.5 %/ft.
Figure 2, Example of Test Decision Tree and Statement of Results
Yes
No
Alarm
H
Test
3.9
Statement
Alarm at
A
3.0 %/ft
B
3.0 %/ft
C
3.0 %/ft and 2.5 %/ft
D
2.5 %/ft
E
3.5 %/ft and 3.0 %/ft
F
2.1 %/ft
G
3.9 %/ft
H
J
At or below 1.0%/ft
G
No
Yes
Alarm
E
No
Test
3.5
Not Alarm at
Statement of Test Results
Is within manufacturer's specification of 3.0 ± 0.5%/ft
2.5 %/ft
Is within manufacturer's specification of 3.0 ± 0.5%/ft
Is within manufacturer's specification of 3.0 ± 0.5%/ft
Is within manufacturer's specification of 3.0 ± 0.5%/ft
2.1 %/ft
Is within manufacturer's specification of 3.0 ± 0.5%/ft
Is a borderline case. Outside manufacturer's specification.
Within test error
Is a borderline case. Outside manufacturer's specification.
Within test error
3.9 %/ft
Is above the upper limit of manufacturer's specification and
outside of test error
Is outside of the manufacturer's range. Subject to false alarm
Yes
J
No
Alarm
B
Yes
Test
Alarm
A
Test
3.0
Start
13
Test
Alarm
1.0
Yes
No
Alarm
D
Yes
Test
2.1
C
2.5
F
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