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TURBINE FLOWMETERS BY

HOFFER
Perfecting Measurement

BEST TURBINE
IN THE
INDUSTRY
5-YEAR WARRANTY

TM

HO SERIES
Turbine Flowmeters
for Gas Service
Product Bulletin HO-G-111L

TECHNICAL DATA SHEET
OUTSTANDING FEATURES

Low cost.
Outstanding accuracy.
Provides wide flow ranges.
Wide variety of process connections
available.*
Operate over a wide range of
temperatures and pressures.
Exclusive use of hybrid ceramic ball
bearings provide superior life.
*MS Flared or Flanged end connections are best suited due to the
even transition at the connections.
Flowmeter Size
Diameter
(inches)
1/2 x 1/4
1/2 x 3/8
5/8
3/4
1
1¼
1½
2
2½
3
4
5
6
8
10
12

GAS SIZE SELECTOR CHART FOR STANDARD HO SERIES TURBINE FLOWMETERS
Repeatable Range**
Repeatable Range**
Based on a Gas Density of 1#/Ft3
Based on a Gas Density of .25#/Ft3
Magnetic Coil
MCP Coil
Magnetic Coil
MCP Coil
(ACF/M)
(ACF/M)
(ACF/M)
(ACF/M)
N/A
.15 – 3.5
N/A
.3 – 3.5
N/A
.3 – 5
N/A
.6 – 5
N/A
.5 – 10
N/A
1 – 10
N/A
.6 – 20
N/A
1.2 – 20
2.5 – 43
.8 – 43
5 – 43
1.6 – 43
3.5 – 100
1.25 – 100
7 – 100
2.5 – 100
5.0 – 120
1.75 – 120
10 – 120
3.5 – 120
10 – 200
3.5 – 200
20 – 200
7 – 200
15 – 500
5 – 500
30 – 500
10 – 500
20 – 600
7.5 – 600
40 – 600
15 – 600
30 – 1100
N/A
60 – 1100
N/A
40 – 1800
N/A
80 – 1800
N/A
50 – 3000
N/A
100 – 3000
N/A
100 – 4800
N/A
200 – 4800
N/A
150 – 7500
N/A
300 – 7500
N/A
200 – 12000
N/A
400 – 12000
N/A
This chart is for quick reference only and not for final size. Calculate using actual service conditions.
**Lower limit of flow range is dependent on user’s operating density.

SPECIFICATIONS
Overrange: 150% of maximum flow (intermittently).
Available Turn Down Range: Dependent on gas density
at user‘s operating conditions.
Linearity: ±1% of reading typical. ***
Repeatability: ±0.25% over tabulated repeatable range.
Note: Performance enhancement techniques are routinely
applied to produce wider linear and useable flow
ranges. This technique is also used to improve
linearity and repeatability. Consult the applications
group at Hoffer with your requirements.

Available Temperature Range: -450°F to +350°F
continuous (to +400°F intermittent heat). Dependent on
bearing/coil selection.
End Fittings: MS flared and flanged styles are
recommended. Other types available on request.
Bearing Styles: Self-lubricating, ceramic hybrid ball
bearings.
Materials: 316/316L dual rated stainless steel standard.
Consult with applications group for corrosive applications.
Broad material list available.
***Linearity is density-dependent for a given meter.
Consult factory for details.