Ma Output Connections - GE PanaFlow MV80 User Manual

2.6.2 4-20 mA Output Connections

The standard PanaFlow meter has a single 4-20 mA loop. Two additional loops are available on the optional
communication board. The 4-20 mA loop current is controlled by the meter electronics. The electronics must be wired
in series with the sensor resistor or current meter (see Figure 31, Figure 32 or Figure 33 below). The current control
electronics requires
12 volts at the input terminals to operate correctly.
Figure 32: Non-Isolated 4-20 mA Output Using Meter Input Power Supply
Figure 33: Isolated 4-20 mA Output Using Meter Provided Power Supply
PanaFlow™ MV80 & MV82 User's Manual
For AC and DC
powered meters
4-20 mA +
R > 250
L
4-20 mA –
Figure 31: Isolated 4-20 mA Output with External Power Supply
DC Power + Pwr
DC Common – Pwr
DC powered meters
only
+ 24 VDC
– 24 VDC
AC units only.
Meter Provided
DC Power
+V
4-20 mA voltage = +V
mA
For Hart Communications
Meter
signal loop must have a
minimum of 250 ohms load
–
resistance R .
–V
mA Meter
4-20 mA +
4-20 mA –
mA Meter
4-20 mA +
4-20 mA –
Chapter 2. Installation
L
For HART
communications,
the signal loop must
have a minimum of
250 ohms load
resistance.
R > 250 Ohm
L
For HART
communications,
the signal loop must
have a minimum of
250 ohms load
resistance.
R > 250 Ohm
L
39