DN40，DN50 prepayment water meter technical parameter
Composed of three parts, message-transmission base meter, electricity-control valve and computer-control box.
Use two lithium batteries in series as the power supply with a lifespan of more than 6 years, a voltage of 3.6V and a capacitance of 3000mA.
4 transducer output lines in the base water:2 pulse output lines, 1 shared line, 1 cut-resistance line, 0.1 cut-resistance line, 0.1 cubic meter water of each pulse in DN40 and DN50(1 dry reed pipe plus ten pulses).
Power valve
Drive voltage: DC7.2V mean air-carried current:30mA
Load current:80mA peak current:120mA
Valve motion time:15-20S
2 limit switches: open, close
Protection rating: IP67
Base meter:
Largest allowed error requirement: superior to 1/3 our national standard computation display:
6 bits mechanical word-ring( the integer digit) plus 4 bits finger computation amount(the decimal fraction digit)plus 1 bit round finger
Initial flux: superior to 2/3 the national standard
Pressure loss, intensity of pressure endurance and other indexes are all superior to the national standard.
Outline dimension, indication setting, color, material, whorl, market, seal etc. all in agreement with the national standard.
Big caliber water meter flux indexes
TYPE common-use flux maximal flux minimal flux flux break-down
DN40 10 m3/h 20 m3/h 0.3 m3/h 2 m3/h
DN50 15 m3/h 30 m3/h 0.45 m3/h 3 m3/h
DN80 40 m3/h 80 m3/h 1.2 m3/h 8 m3/h
DN100 60 m3/h 120 m3/h 1.8 m3/h 12 m3/h
Big caliber water meter installation dimension
TYPE meter length meter width meter height tube tie-in length
DN40 363mm 124 mm 150 mm 2*61 mm
DN50 440 mm 125 mm 156 mm 2*72 mm
DN80 553 mm 210 mm 389 mm
DN100 637 mm 241 mm 413 mm
Functional features:
The meter is an all copper integrated rotating wing water meter. It is accurate and reliable.
The output part of the water meter adopts a bi-stable design against magnetism, therefore, the meter will not wrongly send or neglect any pulse.
The electric control unit makes use of MCU with extremely low power, which has a powerful function, high reliability and ability to resist inferences.
LCD is clear and readable with low power, It is convenient to inquire the accumulated amount of water and the surplus amount, The status is displayed.
The electrical source adopts premium once for all lithium battery whose annual discharge rate is less than 1%. The battery can work for 6 years.
It enable self checkup and alarms when the battery has a low voltage, or there is fake card, broken wire and other error, the buzzer alarms and LCD indicates failure information.
Unique compact airproof design, waterproof, moisture-proof, and enable the installation dimension to agree with the original water meter.
Embedded clock can freeze monthly water amount and realize ladder water prices, and record the meter record date precisely.
The separate design of the card insert part and control part is convenient for card insert and amount inquiries.
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