TB 9-4220-215-35
f. Open inlet valve on pneumatic pressure controller.
g. Slowly open shutoff valve on pneumatic pressure controller.
8. Depth Gage 0-460 FSW
a. Performance Check
(1) Refer to tables 2 through 6 and select appropriate table for TI.
(2) Operate pneumatic pressure controller for TI indications as listed in appropriate
table. The pneumatic pressure standard will indicate within the limits specified.
b. Adjustments. No adjustments can be made.
Table 2. Depth Gage Check 0-230 fsw
Pneumatic pressure standard indications
Test
(psi)
instrument
Equivalent
Tolerance
Tolerance
Tolerance
indications
pressure
.25%
.5%
1%
(fsw)
(psi)1
Min
Max
Min
Max
Min
Max
0
0
-0.256
+0.256
-0.511
+0.511
-1.022
+1.022
20
8.888
8.632
9.144
8.377
9.399
7.866
9.910
40
17.776
17.520
18.032
17.265
18.287
16.754
18.798
60
26.664
26.408
26.920
26.153
27.175
25.642
27.686
80
35.552
35.296
35.808
35.041
36.063
34.530
36.574
100
44.440
44.184
44.696
43.929
44.951
43.418
45.462
120
53.328
53.072
53.584
52.817
52.839
52.306
54.350
140
62.216
61.960
62.472
61.705
62.727
61.194
63.238
160
71.104
70.848
71.360
70.593
71.615
70.082
72.126
180
79.992
79.736
80.248
79.481
80.503
78.970
81.014
200
88.880
88.624
89.136
88.369
89.391
87.858
89.902
220
97.768
97.512
98.024
97.257
98.279
96.746
98.790
230
102.212
101.956
102.468
101.701
102.723`
101.190
103.234
1One
fsw equals 0.4444 psi.
Table 3. Depth Gage Check 0-250 fsw
Pneumatic pressure standard
indications
(psi)
Test instrument
Equivalent
Tolerance
indications
pressure
1%
(fsw)
(psi)1
Min
Max
0
0
-1.111
+1.111
20
8.888
7.777
9.999
40
17.776
16.665
18.887
5
