Dynasonics U500w Data sheet
U500w Ultrasonic Meter
Cold Water Stainless Steel Meter, 5/8, 5/8 x 3/4, 3/4 and 1 inch
NSF/ANSI Standard 61 Certied, Annex G
DESCRIPTION
The U500w Ultrasonic meter uses solid-state technology in a
compact, totally encapsulated, weatherproof, and UV-resistant
housing, suitable for building and property management
submetering applications. Electronic metering provides
information—such as rate of flow and reverse flow indication—and
data not typically available through traditional, mechanical meters
and registers. Electronic metering eliminates measurement errors
due to sand, suspended particles and pressure fluctuations.
Offered in four sizes and lay lengths, the U500w
meter features:
• Minimum extended low-flow rate lower than typical positive
displacement meters.
• Simplified one-piece electronic meter and register that are
integral to the meter body and virtually maintenance free.
• Sealed, non-removable, tamper-protected meter and register.
• Easy-to-read, 9-digit LCD display presents consumption, rate of
flow, reverse-flow indication, and alarms.
• Battery powered—eliminates wiring.
• Compatible with AquaCUE® Flow Measurement Manager.
The U500w meter is available with an in-line connector for easy
connection and installation to AquaCUE connectors.
In the normal temperature range of 45…85° F (7…29° C), the
U500w “new meter“ consumption measurement is accurate to:
• ±1.5% over the normal flow range
• ±3.0% from the extended low flow range to the minimum
flow value
APPLICATIONS
Use the U500w meter for measuring potable cold water in
building/property management and industrial applications. The
meter is also ideal for non-potable, reclaimed irrigation water
applications or less than optimum water conditions where small
particles exist.
The U500w meter complies with applicable portions of
ANSI/AWWA Standard C700 and NSF/ANSI Standard 61, Annex G.
There is currently no AWWA standard that specifically addresses
ultrasonic meters for residential applications.
OPERATION & PERFORMANCE
As water flows into the measuring tube, ultrasonic signals are sent
consecutively in forward and reverse directions of flow. Velocity
is then determined by measuring the time difference between
the measurement in the forward and reverse directions. Total
volume is calculated from the measured flow velocity using water
temperature and pipe diameter. The LCD display shows total
volume and alarm conditions and can toggle to display rate of flow.
CONSTRUCTION
The U500w meters feature a stainless steel, lead-free meter
housing, an engineered polymer and stainless steel metering
insert, a meter-control circuit board with associated wiring, LCD,
and battery. Wetted elements are limited to the pressure vessel,
polymer/stainless steel metering insert and the transducers.
The electronic components are housed and fully potted within
a molded, engineered polymer enclosure, which is permanently
attached to the meter housing. The transducers extend through
the stainless steel housing and are sealed by O-rings.
The metering insert holds the stainless steel ultrasonic reflectors
in the center of the flow area, enabling turbulence-free water flow
through the tube and around the ultrasonic signal reflectors. The
metering insert’s patented design virtually eliminates chemical
buildup on the reflectors, ensuring long-term metering accuracy.
METER INSTALLATION
The meter is completely submersible and can be installed using
horizontal or vertical piping, with flow in the up direction. The
meter will not measure flow when an “empty pipe“ condition is
experienced. An empty pipe is defined as a condition that occurs
when the pipe is partially full.
ESM-DS-02202-EN-05 (April 2019)
Product Data Sheet
U500w Ultrasonic Meter, Cold Water Stainless Steel Meter, 5/8, 5/8 x 3/4, 3/4 and 1 inch
SPECIFICATIONS
U500w Ultrasonic Meter Size 5/8 in. (16 mm)
Operating Range
Extended Low-Flow Rate
Maximum Continuous Operation
Pressure Loss
Reverse Flow - Maximum Rate
Operating Performance
Storage Temperature – 40…140° F (– 40…60° C)
Maximum Ambient Storage
(Storage for One Hour)
Measured-Fluid Temperature Range 34…140° F (1°…60° C)
Humidity 0…100% condensing; meter is capable of operating in fully submerged environments
Maximum Operating Pressure of
Meter Housing
Register Type Straight reading, permanently sealed electronic LCD; digits are 0.28 in. (7 mm) high
Register Display
Register Capacity
Totalization Display Resolution
Battery
0.1…25 gpm
(0.4…95 lpm)
0.05 gpm
(0.2 lpm)
25 gpm
(95 lpm)
4.3 psi at 15 gpm
(0.3 bar @ 57 lpm)
4.0 gpm
(15 lpm)
In the normal temperature range of 45…85° F (7…29° C), new meter consumption measurement
is accurate to:
• ±1.5% over the normal flow range
• ±3.0% from the extended low flow range to the minimum flow value
150° F (72° C)
175 psi (12 bar)
• Consumption (up to nine digits)
• Rate of flow (US gallons per minute or cubic meters per hour)
• Alarms
• Unit of measure factory programmed for gallons, cubic feet and cubic meters
• 10,000,000 gallons
• 1,000,000 cubic feet
• 100,000 cubic meters
• Gallons: 0.XX
• Cubic feet: 0.XXX
• Cubic meters: 0.XXXX
3.6-volt lithium thionyl chloride; battery is fully encapsulated within the register housing and
is not replaceable; 20-year battery life
5/8 x 3/4 in.
(16 x 19 mm)
0.1…25 gpm
(0.4…95 lpm)
0.05 gpm
(0.2 lpm)
25 gpm
(95 lpm)
2.3 psi at 15 gpm
(1.6 bar @ 57 lpm)
4.0 gpm
(15 lpm)
3/4 in. (19 mm) 1 in. (25 mm)
0.1…32 gpm
(0.4…121 lpm)
0.05 gpm
(0.2 lpm)
32 gpm
(121 lpm)
2.0 psi at 15 gpm
(0.14 bar @ 57 lpm)
4.0 gpm
(15 lpm)
0.4…55 gpm
(1.5…208 lpm)
0.25 gpm
(95 lpm)
55 gpm
(208 lpm)
1.8 psi at 25 gpm
(0.12 bar @ 95 lpm)
9.0 gpm
(34 lpm)
MATERIALS
Meter Housing 316 stainless steel
Measuring Element Pair of ultrasonic sensors located in the flow tube
Register Housing & Lid Engineered polymer
Metering Insert Engineered polymer & stainless steel
Transducers Piezo-ceramic device with wetted surface of stainless CrNiMo
Page 2 April 2019 ESM-DS-02202-EN-05
PHYSICAL DIMENSIONS
D
A
B
C
F
WITHOUT GASKET
E
TAILPIECE
COUPLING
1/2 in. NPT THREAD
NPS
THREAD
TAILPIECE
COUPLING
NUT
U500w Ultrasonic Meter, Cold Water Stainless Steel Meter, 5/8, 5/8 x 3/4, 3/4 and 1 inch
U500w Ultrasonic Meter Size 5/8 in. (16 mm)
Size Designation X Lay Length
Weight (without AquaCUE connector) 2.2 lb (1 kg) 2.1 lb (0.95 kg)
See illustrations below for Measurement Designations.
Length (A) 7.5 in.(190 mm) 7.5 in.(190 mm)
Height (B ) 2.404 in. (61 mm) 2.404 in. (61 mm) 2.404 in. (61 mm) 2.529 in. (64 mm)
Height (C) 3.014 in. (76 mm) 3.014 in. (76 mm) 3.094 in. (79 mm) 3.359 in. (85 mm)
Width (D) 3.898 in. (99 mm) 3.898 in. (99 mm) 3.898 in. (99 mm) 3.898 in. (99 mm)
Bore Size 5/8 in. (16 mm) 3/4 in. (19 mm) 3/4 in. (19 mm) 1 in. (25 mm)
Meter Thread 3/4 in. × 14 NPSM 1 in. × 11-1/2 NPSM 1 in. × 11-1/2 NPSM 1-1/4 in. × 11-1/2 NPSM
Tailpiece Length (E) 2.38 in. 2.50 in. 2.50 in. 2.62 in.
Tailpiece Coupling (F) 0.51 in. 0.47 in. 0.47 in. 0.50 in.
Tailpiece Pipe Adapter Thread (NPT) 1/2 in. (13 mm) 3/4 in. (19 mm) 3/4 in. (19 mm) 1 in. (25 mm)
5/8 × 7-1/2 in.
(16 × 191 mm)
5/8 x 3/4 in.
(16 x 19 mm)
5/8 × 3/4 × 7-1/2 in.
(16 x 19 × 1901 mm)
3/4 in. (19 mm) 1 in. (25 mm)
3/4 × 7-1/2 in. or
3/4 × 9 in.
(19 × 191 mm or
19 × 229 mm)
3/4 × 7-1/2 in.: 2.1 lb
3/4 × 9 in.: 2.4 lb
(20 × 190 mm.: 0.95 kg or
20 × 229 mm: 1.08 kg))
7.5 in. or 8.98 in.
(190 mm or 228 mm)
1 x 10-3/4 in.
(25 × 273 mm)
3.1 lb (1.4 kg)
10.745 in. (273 mm)
Measurement Designations
Page 3 April 2019 ESM-DS-02202-EN-05
Loading...