Omega Vehicle Security OMP-MODL User Manual
Page 69
3... I
NTERFACE
M
ODULES
U
SING THE
OMP-MODL
3-45
For long lead wire runs and in applications in electrically noisy
environments, it is recommended that twisted pair and/or shielded
wire be used. If shielded wire is used, the shield at the OMP-MODL
end should be connected to an external earth ground (Figure 3... -
30) or if available, a grounded Shield connection provided on
another type installed interface module (such as the MLIM-1).
Range
Excitation
Current
Range
Excitation
Current
Res 200 ohm
1 mA
Res 200,000 ohm
10 uA
Res 200 ohm
10 mA
Res 400,000 ohm
10 uA
Res 400 ohm
1 mA
RTD-100 ohm 300C
1 mA
Res 400 ohm
10 mA
RTD-100 ohm 850C
1 mA
Res 2000ohm
100 uA
RTD-1000 ohm 300C
100 uA
Res 4000 ohm
100 uA
RTD-1000 ohm 850C
100 uA
Res 10,000 ohm
100 uA
Therm -32 to 250C
10 uA
Res 20,000 ohm
100 uA
Therm -4 to 250C
10 uA
Res 40,000 ohm
10 uA
Therm +10 to 250C
10 uA
Res 100,000 ohm
10 uA
Therm +25 to 250C
100 uA
Excitation Currents used for MLIM-4 Ranges
2
1
12
11
10
9
8
7
6
5
4
3
RTD Element
Cable Shield
A
C
Jumper
+
+
-
-
Excitation leads
ML127
Sense leads
Connect Shield to an Earth Ground
Figure 3... -30: 4-Wire Configuration