Omega FMG-1000-MAW, User Manual

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CONNECTIONS and TROUBLESHOOTING
Problem Probable Cause Try...
No analog signal at
reading device
Output stuck at 4 mA
mA signal does not
match flow rate
Break in current loop
Dead power supply
Reversed polarity
No frequency input from flow sensor
Inadequate voltage
Wrong frequency setting
Check if loop indicator light is on
Check multimeter voltage on power supply
Check polarity
Check flow sensor connections
Check flow sensor polarity
Be sure terminal blocks are firmly plugged in
With flow sensor disconnected, use short wire
to repeatedly short between sensor “S” and
“-” terminals. Output should rise.
Check Load vs. Supply chart
Review setting procedure
Check multimeter voltage on power supply
TROUBLESHOOTING
The FMG-1000 requires a power source of 7 to 26 Vdc at 30
mA max (see WARNING ). The same cable that provides power
also serves as a pulse output if needed for remote reading,
data logging, signal conversion, or telemetry.
Orange (+) and Blue (-) : Serial Output (Do Not Use)
Green (+) and White (-) : Pulse Output, 30 Vdc max, 10 mA max
Red (+) and Black (-) : External Power, 7-26 Vdc at 30 mA max
Drain : Connect to earth ground (see WARNING )
FMG-1000 Cable Color Codes
FMG-1000 Cable
Power Supply
7-26 Vdc
at 30 mA max
(see WARNING )
FMG-1000
Blue
Orange
Black
Red
Shielded
Direct Burial Cable
22 AWG Stranded
White (-)
Green (+)
(-)
(
+)
Drain Wire
Do
Not
Use
{
0 9
8
76
5
43
2 1
0 9
8
76
5
43
2 1
0 9
8
76
5
43
2 1
0 9
8
76
5
43
2 1
Power
Senso
r
4-20 mA
Frequency
S
Not
Used
FMG-1000-MAW
Pulse-to-Analog Converter
WARNING: Using an unregulated power
supply >20 Vdc may damage the meter due
to AC line input voltage fluctuation.