User's Guide

PE_QW1_V04_US
8
and dynamic range, temperature class, where it differs from T30, maximum admissible working pressure
(MAP), pressure loss class; installation sensitivity class of the meter, latest date by wich the meter shall be
replaced, software version number, IP code.
The following is indicated on the housing of meter:
– the type of connection (thread or relative diameter);
– the flow direction.
Sealing
The meter casing is imperceptibly closed. Any unautorized opening of the housing is impossible without
damaging. Additional manufacturer protection is not applied. The manufacturer's warranty does not apply if the
upper cover is opened or connection between upper cover and the housing is damaged.
When the upper sealed cover is opened, the safety button that installed in the meter body is activated
and error code appears on the meter display.
For sealing of meter after installation, there are provided holes in the meter body (See Annex B)
5 INSTALATTION
General requirements
Prior to installing the meter, it is necessary:
- to check the complete set of the meter with that specified in the technical documentation;
- to check for any visible mechanical defects;
- to check the configuration of the meter and to change it if necessary.
The meters may only be installed by qualified specialists in accordance with the requirements of this
document and the meter installation design.
Check configuration of the meter
Prior to installing the meter, it must be verified whether its configuration complies with the requirements
for the specific facility and it must be changed if necessary. The following parameters are verified (the factory
settings for the meter are their standard ones):
- volume measurement units;
- set day of year and month;
- customer number
- internal clock time
Note. The transport mode will turn off automatically (the possibility to change configuration parameters will be
turned off) when the meter starts operation and the volume integrator has accumulated more than 10 litres.
Mounting
The temperature of the working environment should not be higher than 158
o
F.
No special requirements are established for the free space around the meter. It is important that nearby
installations or structures do not rest against the housing of the meter and do not interfere with reading the data
from the display. The meter should be installed at a safe distance from other devices emitting heat or strong
electromagnetic field (in order to prevent disturbance of its working environment conditions).
Sizes and mounting dimensions of meter are provided in Annex A.
The straight pipelines in upstream and downstream the mete ris not necessary (flow profile sensitivity
class U0 D0).
It is recommended to install meters in pipelines as far as possible from pumps, partitions, and elbows.
Water meters may be in all position ( either horizontally, vertically or inclined).Mandatory condition: in
the operating mode, the pipe must have a pressure of not less than 30 kPa and the pipe must be fully filled with
water.
Direction of the arrow on the meter must match with the flow direction in pipeline.
In order to avoid stresses in the pipelines, the distance between the meter connection points in the
meter installation place shall correspond to the total length of meter with regard to the thickness of gaskets.