Key Instruments GS-M User Manual
Series GS-M Glass Tube Flowmeters
250 Andrews Road • Trevose, PA 19053 • 800.356.7483 • 215.357.0893 • Fax: 215.357.9239
www.keyinstruments.com • Email: sales@keyinstruments.com
250 Andrews Road • Trevose, PA 19053 • 800.356.7483 • 215.357.0893 • Fax: 215.357.9239
www.keyinstruments.com • Email: sales@keyinstruments.com
Rev. I-287
Series GS-M Glass Tube Flowmeters
FEATURES
• Standard millimeter scales with flow curves permit multiple
liquid & gases use with a single tube
• Direct reading scales available upon request
• Glass tube allows compatibility with most liquids & gases
• Valve configurations available:
- Inlet valve, Outlet valve, No valve
• Clear plastic shield with magnifying lens
• Low pressure drop design - Large 1/4” NPT
connection fittings
SPECIFICATIONS
Accuracy ± 3% F.S.
Repeatability ±0.5% F.S.
Black Glass
Sapphire
Stainless Steel
Tungsten Carbide
Housing Anodized Aluminum
Wetted Components 316 Stainless Steel with Viton or Buna
Tube Precision Formed Borosilicate Glass
Scale Length 150 MM
Temperature Max 200°F / 93°C
Pressure Max 200 PSI / 13.8 BAR
CATALOG NUMBER ORDERING EXAMPLE
GS10910SNB
EXAMPLE: GS 1 09 1 0 S N B
Float Material
1-4 Select From Flowrate Chart
Float Material (Dual Float)
0 (For Single Float Only)
1-4 (If Dual Float Is Needed)
Valve Designation
N = No Valve
V = Standard Valve (Inlet)
O = Standard Valve (Outlet)
Elastomer Material
B = Buna V = Viton
Floats
MAXIMUM RANGES AVAILABLE:
50 LPM to 134 LPM Air @ STP
1.25 LPM to 4.25 LPM Water @ STP
MODEL AIR (LPM) WATER (LPM)
10910 (G) 50 1.25
10920 (S) 65 1.80
10930 (ST) 95 2.50
10940 (T) 134 4.25
FLOAT MATERIAL CODES
1 = Black Glass ( G )
2 = Sapphire ( S )
3 = Stainless Steel ( ST )
4 = Tungsten Carbide ( T )
INCH MM
9 13⁄
16
249
1 5⁄
16
33.3
2 5⁄
16
58.7
1 1⁄
4
31.8
8 13⁄
16
224
1
⁄
2
12.7
3/4-16 THREAD FOR
PANEL NUTS (provided)
2 PLACES
NON-ROTATING FITTING 1/4”-16
FNPT 2 PLACES
3
/
16
13
/
9
16
9
/
16
5
/
16
1
3
/
8
2
1
/
4
1
13
8
1
/
2
/
16
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