7–37
T-372
7.28.3
GDP Supply and Return Sensor Calibration
European Commission GDP (Good Distribution Practices) guidelines, which are used worldwide, call for the equip
-
ment used to control or monitor environments where medicinal products are stored or transported be calibrated in
accordance with pharmaceutical shipper specifications, typically every six months or annually.
This procedure explains how to perform a GDP calibration of the supply (STS/SRS) and return (RTS/RRS) sensors
using DataLINE software version 3.1 or higher.
The calibration procedure should be conducted in pairs (STS/SRS, or RTS/RRS) and it is recommended to cali
-
brate before the full pre-trip inspection.
WARNING
!
Before removing the Supply or Return air sensors from the unit, turn the ON/OFF switch and
circuit breaker to the OFF position. Disconnect the power plug from the unit. Follow proper
lockout/tagout procedures to ensure the power cannot inadvertently be energized. It is
important that all dismantling work is done and tools and personnel are away from the unit
before powering on the unit for calibration.
Table 7–3 Sensor Resistance - PrimeLINE CPDS
°C
°F
OHMS
°C
°F
OHMS
-40
-40
2,889,600
18
64.4
117,656
-38
-36.4
2,532,872
20
68.0
107,439
-36
-32.8
2,225,078
22
71.6
98,194
-34
-29.2
1,957,446
24
75.2
89,916
-32
-25.6
1,724,386
25
77
86,113
-30
-22.0
1,522,200
26
78.8
82,310
-28
-18.4
1,345,074
28
82.4
75,473
-26
-14.8
1,190,945
30
83.0
69,281
-24
-11.2
1,056,140
32
89.6
63,648
-22
-7.6
938,045
34
93.2
58,531
-20
-4.0
834,716
36
96.8
53,887
-18
-0.4
743,581
38
100.4
49,656
-16
3.2
663,593
40
104.0
45,812
-14
6.8
593,030
42
107.6
42,294
-12
10.4
530,714
44
111.2
39,078
-10
14.0
475,743
46
114.8
36,145
-8
17.6
426,904
48
118.4
33,445
-6
21.2
383,706
50
122.0
30,985
-4
24.8
345,315
52
125.6
28,724
-2
28.4
311,165
54
129.2
26,651
0
32.0
280,824
56
132.8
27,750
2
35.6
253,682
58
136.4
23,005
4
39.2
229,499
60
140.0
21,396
6
42.8
207,870
62
143.6
19,909
8
46.4
188,494
64
147.2
18,550
10
50.0
171,165
66
150.8
17,294
12
53.6
155,574
68
154.4
16,133
14
57.2
141,590
70
158.0
15,067
16
60.8
129,000
72
161.6
14,078
