ZENNER USA
15280 Addison Rd #240, Addison, TX 75001
Phone (972) 386-6611, Fax (972) 386-1814
www.zennerusa.com
Rev. C
Page 2 of 4
Meter Installation
To achieve optimal measurement results, (3)
times the pipe diameter should be allowed
on the inlet and (2) times the pipe diameter
should be allowed on the outlet side of the
meter. However, ZSU Ultrasonic Meters are
designed to be installed without straight sec-
tions in front and after the meter and still
meet AWWA accuracy standards.
Clean and flush the service line thoroughly
on the inlet side of the meter before in-
stalling.
The pipe cross section should not be re-
duced directly in front of and behind the me-
ter.
Valves or other flow regulators should be
installed, where possible, behind the meter.
The meter should be installed, where possi-
ble, at the deepest point of the pipe installa-
tion insuring air is not entrapped within the
meter and the meter body is always com-
pletely water filled.
During installation, ensure the flow arrow
indicator on the meter housing is pointed to-
ward the customer’s side of the service line.
Install using new bolts and gaskets.
To insure unrestricted flow of water through
the meter, use the proper size and type of
gaskets. Connections should only be suffi-
ciently tight to seal; do not over-tighten.
Flange gaskets must not extend into the
pipe.
If necessary, the meter should be protected
by a strainer. This will keep foreign matter,
such as stones or debris, from entering the
meter and potentially cause damage.
The meter is designed for use in a frost-
proof location with ambient temperature not
to 130°F and with water tempera-
tures not to 122°F .
To prevent damage during the installation
process, ensure that the meter is slowly
filled with water.
Activating the Meter
Upon delivery, the display of the meter will ar-
rive in “sleep mode”. To activate the meter,
simply fill the meter with water for ten seconds.
This will move the meter into active reading
mode. During the installation, all air must be
ventilated from the meter and the meter must
be completely filled with water in order for acti-
vation to be achieved.
Once the meter has been activated, an automat-
ic display check takes place (segment test). The
segment test is represented by three flashes of
all segments on the display indicator and is re-
peated every 60 seconds during operation.
Readout options of the ZSU meter via the
NFC (Near Field Communication) Interface
Cable
The following data can be directly read from the
measuring instrument via the NFC interface, e.g.
with NFC-capable smartphone:
Meter ID (serial number)
Current consumption value or total volume
in the case of an overrun
Up to 15 previous month’s values
Software version
Alarms or error messages
The meter can be retrofitted with NDC modules,
or ordered with a factory-fitted module.
