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Emerson Rosemount 644h Manual Página 67

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C-7
EN
Rosemount Inc
CSA
(2)
Intrinsically Safe Installation Connection Parameters:
Class I
Div. 1
Groups
A, B, C,
and D
• 30 V or less, 330
ohms or more
• 28 V or less, 300
ohms or more
• 25 V or less, 200
ohms or more
• 22 V or less, 180
ohms or more
T6 (– 50 ≤ T
a
≤
40 °C)
• 30 V or less, 340
ohms or more
• 28 V or less, 300
ohms or more
• 25 V or less, 240
ohms or more
• 22 V or less, 190
ohms or more
T5 (– 50 ≤
T
a
≤ 60 °C)
T5 (– 50 ≤ T
a
≤
60 °C)
T4 (– 50 ≤ T
a
≤
80 °C)
• 30 V or less, 330
ohms or more
• 28 V or less, 250
ohms or more
• 25 V or less, 240
ohms or more
• 22 V or less, 190
ohms or more
Class I
Div. 1
Groups C
and D
• 30 V or less, 150
ohms or more
T4 (– 50 ≤ T
a
≤
80 °C)
• 30 V or less, 230
ohms or more
• 28 V or less, 200
ohms or more
• 25 V or less, 160
ohms or more
Factory Mutual
(3)
Intrinsically Safe Installation Entity Parameters:
Power
Loop
V
i
30 V dc 30 V dc
I
i
250 mA 240 mA
Class I, II,
and III
Div. 1
Groups
A, B, C,
D, E, F,
and G
P
i
1.0 W 1.0 W 0.67 W
• T5 (– 50
≤ T
a
≤
60 °C)
• T5 (– 50 ≤ T
a
≤ 40 °C)
• T6 (– 50
≤ T
a
≤
40 °C)
• T4 (– 50 ≤ T
a
≤ 80 °C)
• T5 (– 50
≤ T
a
≤
50 °C)
C
i
0.008 µF 0.010 µF
L
i
0
µH
0 µH
Sensor
V
t
10.7 V dc 13.6 V dc
I
t
15.3 mA 22 mA
P
o
0.04 W 0.11 W
C
a
2.23 µF 0.8 µF
L
a
140 mH 60.0 mH
(1) For more information see approval certificate, Old: Model 644H: 95C2010X, Model 244E: 95C2019X; New:
Model 644H: BAS00ATEX1033X, Model 244E: BAS00ATEX1034X
(2) For more information see Rosemount drawing 00644-1040, Rev. B (old) and 00644-1064,
Rev AA (new).
(3) For more information see Rosemount drawing 00644-1056, Rev. B (old) and 00644-0009,
Rev AA (new)
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