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For a complete calibration, take the gauge up to full scale, hold it there for 60
seconds, release the pressure and zero the gauge. Apply positive pressures to the
upper port and a negative pressure to the lower port such that changes in
atmospheric pressure will not affect the calibration. Record the reference and
gauge readings for each point on the table below. Ensure that all zero shift of the
reference gauge is removed for each reading.
The Ascending and Descending readings must be taken at the target pressures shown
+/-1 Pa if the pressure is below 20 Pa, +/-2 Pa if the pressure is below 50 Pa or +/-5
Pa if the pressure is above 50 Pa. That is to say the readings must be taken at these
target points within these limits; these limits do not describe the accuracy required.
60 Pa Analog Room gauge target pressures
Ascending pressure
Descending
pressure
Final pressure
250 Pa Analog Room gauge target pressures
Ascending pressure
Descending pressure
Final pressure
DM-1 Digital Room & Flow gauge target pressures
Ascending pressure
Descending pressure
Final pressure
2000 Fire Door-Fan Manual
0
10
14
50
35
25
8
12
15
0
30
40
180
130
90
25
35
50
0
10
14
320
35
25
8
12
15
updated 2002-05-28
17
25
35
17
14
10
20
30
40
60
90
130
60
40
30
75
100
150
17
25
35
17
14
10
20
30
40
0
55
0
200
0
350
Page 48 of 58
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