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APPLICATIONS: Measurement of cold
water for residential, commercial and industrial
applications where water volumes are low,
and low flow sensitivity is important.
CONFORMANCE TO STANDARDS: Hersey
Series 500 IIS Water Meters comply with
ANSI/AWWA Standard C700. Meters which are
manufactured with the EnviroBrass® maincase
option meet the requirements of NSF Standard
61. Each meter is tested to ensure compliance.
CONSTRUCTION: Hersey Series 500
IIS Water Meters consist of three basic
parts: maincase; measuring chamber; and
permanently sealed register. The maincases
and topcases are made of bronze. The measuring
chamber, nutating disc and strainer are
made of thermoplastic, which is dimensionally
stable and will not corrode. An optional
test port in the body permits in-line testing.
Register box and lid are available in plastic
or bronze. The meter is designed so that
the register, measuring chamber and strainer
can be replaced without removing the meter
from the line.
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 resist tampering
with the register. The totalizing register
has a straight-reading odometer type display,
a 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 readings systems available for increased
reading efficiency (see Meter Reading Systems.)
OPERATION: Water flows through the
meter's strainer where any debris that could
adversely affect meter accuracy or free
operation is screened out. As the water
enters, it fills a known volume of the measuring
chamber on one or the other side of a movable
disc that separates the chamber into two
sections. As water enters it moves the disc
(nutates), forcing a known volume of water
out of the meter from the opposite side
of the disc. The process repeats as the
sections refill and empty in turn. The nutating
action of the disc is coupled magnetically
to the register to indicate the volume of
water that passes through the meter. The
large measuring chamber requires fewer nutations
of the disc for each gallon measured, which
helps to limit wear, reduce pressure loss
and extend the life of the meter.
MAINTENANCE: The Hersey Series 500
IIS Water Meters are designed and manufactured
to provide long service life with virtually
no maintenance required.
CONNECTIONS: Available with integral
two-bolt oval flanges.
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Model Number |
562IIS and 572IIS |
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Sizes |
1-1/ 2" and 2" |
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Standards |
Manufactured and tested
to meet or exceed all applicable parts
of ANSI/AWWA C700 Standard.Envirobrass
options meet requirements of NSF Standard
61. |
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Service |
cold water measurement
with flow in only one direction |
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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
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150 PSI |
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Temperature Range |
33F to 100F water temperature |
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Measuring Elements |
Nutating Disc |
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Disc Nutations (per Gallon) |
562IIS: 6.47, 572IIS:
3.92 |
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Register Type |
Straight reading, permanently
sealed,
magnetic drive with low flow indicator.
Remote reading units optional |
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Meter Connections |
1-1/ 2" size and
2" size available with two bolt
flanged ends. |
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Materials |
Maincase - bronze UNSC84400;
Measuring Chamber - thermoplastic; Magnets
- ceramic; Strainer - thermplastic;
Casing bolts - stainless steel ANSI
B18; Register box and lid - thermoplastic. |
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Options |
Meter Case - Enviro Brass
UNSC89520. Register box and lid - bronze
UNSC85700; AMR Reasing Systems. |
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