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APPLICATIONS: For use in the measurement
of potable water for applications where
flow is consistently moderate to high. Designed
for applications where accuracy is an essential
part of maintaining revenue. The Horizon
horizontal turbine meter is built to maintain
accuracy over extended periods of use.
CONFORMANCE TO STANDARDS: Horizon
turbine meters have some of the widest flow
ranges of any turbine meters on the market.
All Horizon series turbine meters meet or
exceed the latest performance and accuracy
standards of AWWA C701. Horizon meters in
sizes 4 " - 8 " are FM Approved.
Maximum continuous flow rates may be exceeded
by as much as 25% for intermittent periods.
CONSTRUCTION: The Horizon consists
of three basic parts; maincase; measuring
insert; and register. Maincases are made
of bronze. Measuring elements are thermoplastic
with unique inlet and outlet straightening
vanes. To simplify maintenance, the Horizon
is designed to allow quick, easy, in-line
exchange of the measuring element without
removing the maincase from the installation.
Interchangeability of many parts within
various sizes minimizes spare parts inventory
and the Horizon comes standard with built-in
strainer.
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REGISTER: Permanently sealed register
has a unique seal and heat-treated glass
to eliminate dirt, moisture infiltration
and lens fogging. An integral tamper proof
locking feature is provided to prevent tampering
of the register and calibration vane. The
totalizing register has a straight-reading
odometer type display; 360º test circle
with center sweep hand and a low flow (leak)
detector. Standard gearing is used, making
registers interchangeable by size. All Hersey
meter Models have electronic meter reading
systems available for increased reading
efficiency (see Meter Reading Systems.)
OPERATION: Water flows straight
through the measuring element where it turns
a rotor at a rate in direct proportion to
the quantity of water flowing through the
meter. The straight-through design allows
high volumes to flow with a minimum of head
loss. Retro Thrust ® design extends
the life of the meter by dividing wear between
two points: during low flow the tungsten
carbide bearing in the rotor floats against
a stainless steel shaft; during high flow
a second tungsten carbide bearing gently
moves back against another stainless steel
shaft. During medium flow, the rotor floats
between both tungsten carbide bearings with
sapphire bushings providing radial support
for the rotor.
For sizes 1-1/2", 2"
STRAINER & TEST PORT: Standard
Built-in Strainer. Test port is optional
with spool piece.
CONNECTIONS: ANSI Class 150 Flanges.
1-1/2" NPT pipe threads on optional
test outlet.
For sizes 3", 4", 6",
8", 10"
STRAINER: A separate optional strainer
is recommended to protect the measuring
element.
CONNECTIONS: ANSI Class 150 Flanges
on 3" through 10" sizes; 2"
NPT pipe threads on test outlet.
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Model Designation
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HORIZON |
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Sizes
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1-1/2", 2"
3", 4", 6", 8",
10"
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Standards |
Manufactured and tested to meet or
exceed all
applicable parts of ANSI/AWWA C701
class II Standard
4"-8" Horizon meters have
FM approval.
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Service for 1-1/2", 2"
Service for 3", 4", 6",
8", 10"
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Cold water measurement
Cold water measurement with flow
in one direction
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Normal Operating
Flow Range |
See Catalog
PDF below |
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Accuracy |
See Catalog
PDF below |
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Pressure
Loss |
See Catalog
PDF below |
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Maximum Working
Pressure |
175 PSI |
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Temperature
Range |
33F to 100F
water temperature |
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Measuring
Elements |
Stainless
Steel and Thermoplastic |
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Register
Type |
Straight
reading, permanently sealed,
magnetic drive with low flow indicator.
Remote Readings units optional |
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Materials
for 1-1/2", 2" |
Maincase
- bronze UNS 84400;
Casing bolts - Stainless steel ANSI
B18; Rotor - Thermoplastic; Rotor radial
bearing - Sapphire; Rotor thrust bearings
- tungsten carbide; Rotor bearing pivots
- Stainless steel ANSI B18; Magnet -
rare earth/ceramic;
Register box and lid - Thermoplastic
or optional bronze; Standard strainer
- Stainless steel; Spool piece with
test outlet - bronze
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Materials
for
3", 4", 6", 8",
10" |
Maincase
- bronze UNSC84400;
Casing bolts - Stainless steel ANSI
B18; Rotor - Thermoplastic; Rotor radial
bearing - Sapphire; Rotor thrust bearings
- tungsten carbide; Rotor bearing pivots
- Stainless steel ANSI B18; Magnet -
rare earth/ceramic;
Register box and lid - Thermoplastic
or optional bronze. |
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Installation |
Horizontal
or Vertical |
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Meter Connections for 1-1/2"
Meter Connections for 3", 4",
6", 8", 10"
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1-1/2" - 2" ANSI Class
150
3" - 10" ANSI Class 150
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Options
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AMR Reading Systems
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