Dwyer Series GFM

Series GFM Gas Mass Flow Meter

Dwyer Series GFM
Series GFM

Flow Range Up to 1000 L/min, Pressures Up to 500 psi, NIST Traceable

The Dwyer Series GFM Gas Mass Flow Meters combine a straight tube sensor with a restrictor flow element to provide high accuracy and repeatability. Flow rates are virtually unaffected by temperature and pressure variations. Actual gas flow is displayed in engineering units on a 3-1/2 digit, 90° tiltable LCD readout. Units can be used with Series GFT Flow Totalizer for applications requiring totalization. Series GFM includes a NIST traceable certificate.

Note: These units require a cable, see GFM-CBL4 or GFM-CBL5, depending on your needs.

 

Dwyer Series GFM Specifications

  • Service: Clean gases compatible with wetted parts.
  • Wetted Materials:GFM-1XXX: anodized aluminum, brass, 316 SS and fluoroelastomer o-rings; GFM-2XXX: 316 SS and fluoroelastomer o-rings.
  • Accuracy: ±1% FS including linearity over 59 to 77°F (5 to 25°C) and 5 to 60 psia (0.34 to 4 bar); Series X143, X144, X145, ±1.5% FS.
  • Repeatability: ±0.5% of full scale.
  • Response Time: 2 seconds to within ±2% of actual flow.
  • Output:Linear 0-5 VDC and 4-20 mA.
  • Maximum Particulate Size:5 microns.
  • Temperature Limits: 32 to 122°F (0 to 50°C).
  • Power Supply: 12-26 VDC.
  • Process Connections: 1/4″ compression fitting for flow rates ≤50 L/m; 3/8″ for 100 and 200 L/m; 1/2″ for 500 L/min; 3/4″ for 1000 L/min.
  • Pressure Limits: 1000 psig (68.9 bar); Series GFM-X143, X144, X145, 500 psig (34.5 bar).Leak Integrity:1 x 10-9 sccs of Helium.
  • Display: 90° tiltable, 3-1/2 digit.
  • Agency Approvals: CE.

 

Available Models


Aluminum Construction

MODELDESCRIPTION
GFM-1101Gas mass flow meter, range 0-10 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1102Gas mass flow meter, range 0-20 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1103Gas mass flow meter, range 0-50 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1104Gas mass flow meter, range 0-100 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1105Gas mass flow meter, range 0-200 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1106Gas mass flow meter, range 0-500 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1107Gas mass flow meter, range 0-1000 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1108Gas mass flow meter, range 0-2 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1109Gas mass flow meter, range 0-5 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1111Gas mass flow meter, range 0-15 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1131Gas mass flow meter, range 0-30 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1133Gas mass flow meter, range 0-50 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-1142Gas mass flow meter, range 0-100 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 3/8" compression fitting.
GFM-1143Gas mass flow meter, range 0-200 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 3/8" compression fitting.
GFM-1144Gas mass flow meter, range 0-500 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/2" compression fitting.
GFM-1145Gas mass flow meter, range 0-1000 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 3/4" compression fitting.


Stainless Steel Construction

MODELDESCRIPTION
GFM-2101Gas mass flow meter, range 0-10 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2102Gas mass flow meter, range 0-20 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2103Gas mass flow meter, range 0-50 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2104Gas mass flow meter, range 0-100 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2105Gas mass flow meter, range 0-200 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2106Gas mass flow meter, range 0-500 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2107Gas mass flow meter, range 0-1000 mL/m. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2108Gas mass flow meter, range 0-2 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2109Gas mass flow meter, range 0-5 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2111Gas mass flow meter, range 0-15 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2131Gas mass flow meter, range 0-30 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2133Gas mass flow meter, range 0-50 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/4" compression fitting.
GFM-2142Gas mass flow meter, range 0-100 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 3/8" compression fitting.
GFM-2143Gas mass flow meter, range 0-200 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 3/8" compression fitting.
GFM-2144Gas mass flow meter, range 0-500 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 1/2" compression fitting.
GFM-2145Gas mass flow meter, range 0-1000 LPM. Specified flow range is for an equivalent flow of nitrogen at 70°F (21°C) @ 760 mm Hg, 3/4" compression fitting.


 

Available Accessories

  • Model GFM-110P 110 V power supply.
  • Model GFM-220PE 220 V power supply.
  • Model GFM-CBL4 3 ft cable for 4-20 mA output.
  • Model GFM-CBL5 4 ft cable for 0-5 VDC output.