Graco g250 User Manual

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.

•

Flow volume can only be measured at the location 
where the flow meter is installed.

•

The Fluid Flow Meters are intrinsically safe for Class 
I; Division 1; Group D hazardous indoor (NEMA 1) 
locations when installed with an intrinsically safe 
power device and wiring.

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

. 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 the Technical Data and Dimensions 
Drawings for dimension, inlet/outlet size, tempera-
ture and other specifications.

•

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.

7379A

Cable

Electronic Sensor Device

Flow Meter

Fluid Line

Fluid Shutoff Valve

on outlet side

Ground Sheath

Check Valve

Fluid Shutoff Valve
on outlet side