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Electrical Connections 3098 Technical Manual
3-12
3.6.3 Customer's equipment, 2-wire configuration
3098
1
+
SIG A
2
+
3
+
SIG B
4
+
330R
1nF
1nF
Power +
Power -
Signal +
Signal -
2.3V pk to pk
Figure 3-6.1: Electrical connections for meter 2-wire option
used with customers’ own equipment (Safe Area)
3098
1
+
SIG A
2
-
3
+
SIG B
4
-
MTL 787 (+ve)
3
4
1
2
Hazardous Area Safe Area
Power + (24.25 to 27V DC, 30mA)
Power -
Signal +
Signal -
1nF
1nF
10kΩ
Figure 3-6.2: Electrical connections for meter 2-wire option
used with customers’ own equipment and Shunt-Diode Safety Barrier (Hazardous Area)