User's Manual

308968 7
Installation
Grounding
WARNING
FIRE, EXPLOSION, AND ELECTRIC
SHOCK HAZARD
Proper electrical grounding of your
system is essential. For your safety,
read the warning section, FIRE, EXPLO-
SION, OR ELECTRIC SHOCK HAZARD, on
page 3.
1. Ground the flow meter by connecting a grounded
cable to the sensor.
Have a qualified electrician check the electrical
grounding continuity between the flow meter
sensor and a true earth ground; remove the cable
connector from the sensor and measure the resist-
ance from the cable connector Pin 3 to true earth
ground. Refer to Fig. 2.
If the resistance is greater than 25 ohms, check
the cable ground connection. Reconnect the
ground sheath or replace the cable. Do not oper-
ate the system until the problem is corrected.
2. Always ground the fluid supply unit, using one of
the following options:
a. Mount the meter to a grounded conductive
surface, or
b. Connect the conductive fluid hose to the meter
inlet and outlet.
Fig. 2
Wire Diagram
TI0449
4
5
3
2
1
Terminal Functions
1 +7 – 29 VDC Supply. . . . . . . . . . . . . . . . . . . . . . . . . .
2 Signal Our. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Ground (0V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Collector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Emitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wire Connections
Wire Color Flow Meter Terminal
Red 1
White 2
Black 2