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SERIES GFC
GAS MASS FLOW CONTROLLERS
FLOW
Flow Range Up to 1000 L/min, Pressures Up to 500 psi, NIST Traceable
CALIBRATION SERVICES AVAILABLE
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Model GFC-1101 thru GFC-1111
and GFC-2101 thru GFC-2111
The Series GFC Gas Mass Flow Controllers combine a straight tube sensor with a
restrictor ow element. It is available for ow ranges up to 1000 L/min and offered in
aluminum or 316 SS in 1/4˝, 3/8˝, 1/2˝ and 3/4˝ sizes.
BENEFITS/FEATURES
• Provides high accuracy and repeatability
• Flow rates are virtually unaffected by temperature and pressure variations
• Utilizes an electromagnetic valve and PID electronics to maintain continuous control
Controllers
by comparing measured sensor signal set to ow rates
• Set points can be adjusted with local potentiometers or remotely via 0-5 VDC or 4-20
Mass Flowmeters/
mA analog signal
• Actual gas ow is displayed in engineering units on a 3-1/2 digit, 90° tiltable LCD
readout
• Can be used with Series GFT2 Flow Totalizer for applications requiring totalization
• NIST traceable certicate included
APPLICATIONS
• Gas ow measurement
• Gas ow control
• Operating pumps and valves
• Process equipment
• Vacuum processes
• Glass and metal coating
• Film deposition
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SPECIFICATIONS
Service: Clean gases compatible with wetted parts.
Wetted Materials: GFC-1XXX: Anodized aluminum, brass, 316 SS and
uoroelastomer O-rings; GFC-2XXX: 316 SS and uoroelastomer 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 GFC X143, X144, X145, ±1.5% FS.
Repeatability: ±0.25% FS.
Response Time: 2 s to within ±2% of actual ow.
Output: Linear 0-5 VDC and 4-20 mA.
Max. Particulate Size: 5 microns.
Temperature Limits: 32 to 122°F (0 to 50°C).
Power Supply: ±12 VDC.
Process Connections: 1/4˝ compression tting for ow 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 GFC-X143, X144, X145, 500 psig
(34.5 bar).
Leak Integrity: 1 x 10
Display: 90° tiltable, 3-1/2 digit.
Compliance: CE.
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Model GFC-1130 thru GFC-1133
and GFC-2130 thru GFC-2133
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Model GFC-1143 thru GFC-1145
and GFC-2143 thru GFC-2145
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Model GFC-1140 thru
GFC-1142 and GFC-2140
thru GFC-2142
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MODEL CHART
Aluminum Model SS Model Flow Range
GFC-1101*
GFC-1102*
GFC-1103*
GFC-1104*
GFC-1105*
GFC-1106*
GFC-1107*
GFC-1108*
GFC-1109*
GFC-1111*
GFC-1131*
GFC-1133*
GFC-1142*
GFC-1143*
GFC-1144*
GFC-1145*
*Specied ow ranges are for an equivalent ow of nitrogen at 70°F
(21°C) @ 760 mm Hg
GFC-2101*
GFC-2102*
GFC-2103*
GFC-2104*
GFC-2105*
GFC-2106*
GFC-2107*
GFC-2108*
GFC-2109*
GFC-2111*
GFC-2131*
GFC-2133*
GFC-2142*
GFC-2143*
GFC-2144*
GFC-2145*
0 to 10 mL/m
0 to 20 mL/m
0 to 50 mL/m
0 to 100 mL/m
0 to 200 mL/m
0 to 500 mL/m
0 to 1000 mL/m
0 to 2 L/min
0 to 5 L/min
0 to 15 L/min
0 to 30 L/min
0 to 50 L/min
0 to 100 L/min
0 to 200 L/min
0 to 500 L/min
0 to 1000 L/min
Process Connector
Compression Fitting
1/4˝
1/4˝
1/4˝
1/4˝
1/4˝
1/4˝
1/4˝
1/4˝
1/4˝
1/4˝
1/4˝
1/4˝
3/8˝
3/8˝
1/2˝
3/4˝
DWYER INSTRUMENTS, LLC | dwyer-inst.com298
ACCESSORIES
Model Description
GFC-110P
GFC-220PE
GFC-CBL1
GFC-CBL3
USA: California Proposition 65
WARNING: This product can expose you to chemicals including Lead, which is known to the State
of California to cause cancer and birth defects or other reproductive harm. For more information go
to www.P65Warnings.ca.gov.
110 V power supply
220 V power supply
8´ cable with 15-pin connector
3´ extension cable for LCD readout
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