Technical Manual
|
Dräger Polytron
®
8000 Series
23
Installation
5.2.1.3
Cable lengths for 4 to 20 mA signal connection of Polytron
®
8200 CAT LC
Tinned copper wire, class 5/6 according to IEC 60228 / VDE 0295
Values include a safety margin of 10%.
Operating voltage: 24 V
Bare copper wire, class 2 according to IEC 60228 / VDE 0295
Values include a safety margin of 10%.
Operating voltage: 24 V
5.2.2
Terminal connections 4-20mA / HART
®
interface and relay
4-20mA / HART® interface
AWG
21
20
18
16
13
mm
2
0.5
0.75
1
1.5
2.5
122°F
50°C
feet
906
1361
1814
2651
4423
m
276
415
553
808
1348
68°F
20°C
feet
1014
1519
2031
2963
4944
m
309
463
619
903
1507
AWG
21
20
18
16
13
mm
2
0.5
0.75
1
1.5
2.5
122°F
50°C
feet
4902
3002
2008
1483
1007
m
1494
915
612
452
307
68°F
20°C
feet
1129
1657
2244
3356
5479
m
344
505
684
1023
1670
Pin
Mark
Function
1
PWR+
V+
2
PWR-
V-
3
PWR-
V-
To be used when the instrument is not powered by the control
unit (separate power supply), see wiring figures.
4
4-20mA
4 to 20 mA signal (Operation as source or sink)
5
PE
Protective earth
Optional PE for relay connection. Connecting PE together
with the 4-20mA analog output may cause ground loops.
Содержание Polytron 8000 Series
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