9
Electric
connection of
non-explosion
proof product
Definition
Internal
Plug
Wiring Color
External Plug Connection
4Wires
Plug
MPM4730 B2
& MPM4700
7
Wires
Plug
＋
V
1
（
Red
）
1
Red
1
OUT/GND
2
（
Black
）
2
Black
2
RS 485B
4
（
White
）
White
5
RS 485A
5
（
Yellow
）
3
Yellow(Green)
4
Electric
connection of
explosion
proof product
Definition
Internal
Plug
Wiring
Color
External Plug Connection
4Wires
Plug
MPM4730 B2
& MPM4700
7 Wires
Plug
＋
V
1
（
Red
）
1
Red
1
OUT/GND
2
（
Black
）
2
Black
2
Case
3
（
Blue
）
Blue
7
RS485B
4
（
White
）
-
White
5
RS485A
5
（
Yellow
）
-
Yellow(Green)
4
Note:
Explosion-proof product of 4-pin plug connection only provide (4 ~ 20) mA DC
output
4.2 Typical electrical connection method
a)
The electric connection method of transmitter with 2-wire, 4mA
～
20mADC output to see Figure 7:
