APPLICATION
This type of water meter is multi-jet dry type water meter with plastic body and used to measure the total quantity of cold potable water which consumed in household or a resident unit, passing through the pipeline.
FEATURES
Multi-jet velocity meters.
Magnetic drive, dry-dial, vacuum sealed register, frost resistant, keeps clean reading for long time.
High sensitivity of measuring accuracy, the starting flow rate of the meter size DN15mm is 8 liters or less.
Selected high quality Nylon materials of new-style nontoxic and pro-environmental for steady, reliable characteristic.
The meter body’s color can be black, blue, yellow and green for option.
The mechanism has 5 digits and 4 pointers, 8 digits and 1 pointer for option.
External/Internal adjustment device, inlet strainer, outlet non-return valve for selecting.
Approvals in over 30 countries.
CONSTRUCTION
The meter mainly consists of a body, a measuring chamber, a indicator unit, a retaining ring with lid. The retaining ring secures the internal parts.
WORKING PRINCIPLE
The water flows through the meter’s strainer and into the measuring chamber where it drives the impeller. A drive magnet transmits the motion of the impeller to a driven magnet located within the sealed indicator. The magnet is connected to a gear train which translates the impeller’s rotation into volume totalization displayed on the register dial face.
COMPLIANCE WITH STANDARD
Technical data conforms to ISO 4064:2005 Standard for horizontal installation.
Threaded connections comply with BSP Standard.
WORKING CONDITIONS
Working temperature Class: T30 or T50 for cold water meter
Working Pressure Class: MAP10 or MAP16
Pressure Loss Class: P63
Upstream Disturbance Class: U5
Downstream Disturbance Class: U0
ACCESSORIES
Every water meter will complete with 2 couplings, 2 nuts, 2 coupling gaskets and 2 spud thread protectors.
MAXIMUM PERMISSIBLE ERROR
In the lower zone from Q1 inclusive up to but excluding Q2 is: Cold potable water meter ± 5%
In the upper zone from Q2 inclusive up to and including Q4 is: Cold potable water meter ± 2%
INSTALLATION REQUIREMENTS
Step-1: The meter should be installed inHORIZONTALposition with the direction of the flow as indicated by the arrow cast in the meter body with the register face upwards.
Step-2: Pipeline must be flushed before installation.
Step-3: The meter should be constantly full of water during operation.
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