Variable Area In-line Flow Meters For Air

The FLMG flow meters feature rugged construction, easy installation, and direct-reading flow rates of air. The units are calibrated at 100 psi pressure, suitable for most compressed pneumatic applications.

The spring-and-piston type assembly enables these flow meters to be mounted in any position. The FLMG models with optional analog output (-MA) are typically used to transmit a signal proportional to the flow rate to a process controller, a PLC, a recorder, or a panel-mount display. With the -MA option, the user can choose between reading a 0 to 2000 Hz square-wave pulse, a 0 to 5 Vdc analog signal, or a 2-wire 4 to 20 mA analog signal by connecting the appropriate pins.

SPECIFICATIONS
Measuring Accuracy: ±4% FS over the entire scale range
Repeatability: ±1% FS
Flow Measuring Range: 1.2 to 900 SCFM
Maximum Operating Pressure:
   Aluminum and Brass Monitors: 40 bar (600 psig)
   Stainless Steel Monitors: 70 bar (1000 psig) up to 116°C (240°F)
Maximum Operating Temperature: 116°C (240°F)
Note: For options “-HT” and “-UHT”, see high-temperature graph on spec sheet
Pressure Differential: See the pressure graphs on spec sheet.
Standard Calibration Fluids: Air @ 21°C (70°F), 1.0 sg and 6.8 bar (100 psig)
Relay (Optional): 1 or 2 form “C” relays, rated 10 A, 125 or 250 Vac or ¼ A, 250 Vdc
Mechanical Life: >10⁶ cycles
Analog Output (Optional): Supply voltage 12 to 35 Vdc, field selectable for 0 to 5 Vdc (100 W minimum load), 0 to 2000 Hz square-wave pulse or 4 to 20 mA
R_max = 50 (V_s - 12)
(V_s = supply voltage DC)
Installation Dimensions:
   1/4 and 1/2 NPT Sizes: 1-7/8 OD x 6-9/16" length
   3/4 and 1 NPT Sizes: 2-3/8 OD x 7-5/32" length
   1-1/4 and 1-1/2 NPT Sizes: 3-1/2 OD x 10-1/8" length

Materials of Construction (Wetted Parts)

Description	Aluminum	Brass	Stainless Steel
High pressure casing, end ports and tapered shaft	Aluminum	Brass	304 SS
Seals	Buna (std), EPR, FKM or perfluoroelastomer	Buna (std), EPR, FKM or perfluoroelastomer	FKM with PTFE backup (std) Buna, EPR or perfluoroelastomer
Transfer Magnet	PTFE-coated Alnico	PTFE-coated Alnico	PTFE-coated Alnico
Floating Orifice Disk	Stainless Steel	Stainless Steel	Stainless Steel
All Other Internal Parts	Stainless Steel	Stainless Steel	Stainless Steel

Materials of Construction (Non-Wetted Components)

Description	Aluminum	Brass	Stainless Steel
Window Tube	Polycarbonate (std), Pyrex®	Polycarbonate (std), Pyrex®	Polycarbonate (std), Pyrex®
Window Seals	Buna (std)	Buna (std)	Buna (std)