Dwyer Instruments SERIES GFM Catalog Page
Series
3
[
76.20]
1-3/32
[27.94]
4
-1/2
[114.30]
5
-37/64
[
141.86]
5
-1/64 [127.51]
DWYER MODEL GFM-1101 THRU GFM 1111
&
GFM-2101 THRU GFM-2111
1
-1/8
[28.58]
1
-3/4
[
44.55]
1
[25.40]
4-7/8
[123.70]
1
-3/32
[
27.84]
3
[
76.20]
5
-31/32
[151.64]
6-9/64 [156]
DWYER MODEL GFM-1140 THRU
GFM-1142 & GFM-2140 THRU GFM-2142
DWYER MODEL GFM-1130 THRU GFM-1133
&
GFM-2130 THRU GFM-2133
1-1/4
[31.75]
1-3/4
[44.55]
1
-1/8
[28.58]
1-3/4
[44.55]
1
-1/8
[28.58]
1
-1/2
[38.10]
4-35/64
[115.57]
4
[101.60]
4
[101.60]
7-19/64
[185.42]
1-17/64
[32.00]
1-7/16
[36.51]
3
[
76.20]
6
-1/32 [153]
Maximum 500psi/3400KPa
Gas
Flow Range
Model #
Ser #
3
[76.20]
1
-7/16
[
36.51]
7-19/64
[185.42]
1-17/64
[32.00]
DWYER MODEL GFM-1143 THRU GFM-1145
& GFM-2143 THRU GFM-2145
GFM
Gas Mass Flow Meters
Flow Range Up to 1000 L/min, Pressures Up to 1000 psi, NIST
Traceable
FLOW
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-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.
Model
Aluminum
GFM-1101*
GFM-1102*
GFM-1103*
GFM-1104*
GFM-1105*
GFM-1106*
GFM-1107*
GFM-1108*
GFM-1109*
GFM-1111*
GFM-1131*
GFM-1133*
GFM-1142*
GFM-1143*
GFM-1144*
GFM-1145*
Flow Range
0-10 mL/m
0-20 mL/m
0-50 mL/m
0-100 mL/m
0-200 mL/m
0-500 mL/m
0-1000 mL/m
0-2 L/min
0-5 L/min
0-15 L/min
0-30 L/min
0-50 L/min
0-100 L/min
0-200 L/min
0-500 L/min
0-1000 L/min
*Specified flow ranges are for an equivalent flow of nitrogen at
70°F (21°C) @ 760 mm Hg.
SS
GFM-2101*
GFM-2102*
GFM-2103*
GFM-2104*
GFM-2105*
GFM-2106*
GFM-2107*
GFM-2108*
GFM-2109*
GFM-2111*
GFM-2131*
GFM-2133*
GFM-2142*
GFM-2143*
GFM-2144*
GFM-2145*
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˝
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: ±0.25% of FS.
Response Time: 2 s to within ±2% of actual flow.
Output: Linear 0 to 5 VDC and 4 to 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 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
Display: 90° tiltable, 3-1/2 digit.
Agency Approvals: CE.
ACCESSORIES
For Series GFM Gas Mass Flowmeters
Model GFM-110P, 110V Power Supply
Model GFM-220PE, 220V Power Supply
Model GFM-CBL4, 3´ cable for 4 to 20 mA output
Model GFM-CBL5, 3´ cable for 0 to 5 VDC output
USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
-9
sccs of He.
Mass Flowmeters/
Controllers
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