Graco G250 [7/24] Installation
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Graco G250 [7/24] Installation

Graco G250 [7/24] Installation
Installation
308778U 7
Installation
Dust and Foreign Matter
Avoid having dust or foreign matter enter the flow meter
by taking the following precautions:
• Thoroughly flush the fluid supply lines before install-
ing the flow meter.
• When installing fittings, make sure that no sealing
tape overlaps into the inside of the pipe.
• Install a 100 mesh fluid filter upstream of the flow
meter.
Installing the Flow Meter
NOTE: You must assemble the meter sensor to the
meter body before connecting the cable to the sensor
for the meter to function properly.
• Flow volume can only be measured at the location
where the flow meter is installed.
• The Fluid Flow Meters are intrinsically safe for Haz-
ardous (Classified) Locations, when installed with
an intrinsically safe power device and wiring:
Class I, Div I, Group D, T3 (US and Canada)
Class I, Zone I Group IIA T3 (ATEX only)
TA = 0°C to 60°C
Refer to ANSI standards ISA-RP12.6, NEC Article
504 and the Canadian Electrical Code Appendix F.
• Do not use more than 200 ft. (61 m) of cable.
• Refer to F
IG. 1 to locate and install the flow meter,
connectors, and fluid shutoff valves. Install a check
valve to prevent backflow. The arrows on the flow
meter and check valve show the direction of fluid
flow.
• The shutoff valves allow you to isolate the meter for
service.
• Refer to Dimensions on page 20 and Technical
Data on page 22 for dimension, inlet/outlet size,
temperature and other specifications.
Improper wiring can cause fire and explosion, electric
shock, or other serious injury.
• Disconnect power source before installing.
• All electrical equipment must only be installed by
a qualified electrician.
• Understand and follow your local code and safety
regulations for hazardous location wiring of intrin-
sically safe circuits.
FIG. 1: Typical Installation
Cable
(see Table 1 on page 9
for available cables)
Electronic Sensor
Flow Meter
Fluid Line
Fluid Shutoff Valve
on outlet side
Ground Sheath
Check Valve
Fluid Shutoff Valve
on inlet side
7379A

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