Big diameter prepaid water meter with super system

    Application
Measuring the volume of cold potable water passing through the pipeline
Work Conditions
Water temperature : 0.1 ℃- 40℃ Working Humidity : ≤ 93℃
Water pressure : ≤1.0 Mpa
Brief Introduction
RF Card Prepaid Water Meter is developed from dry-type basic Water Meter,
composed of microchip module, controlling valves, LED display, RF Card & reader,
and accounting management system.
1. The figure of water volume is displayed directly on screen
2. The water using could be controlled as prepaid method
Features
Multi jet, dry dial; Brass body, electronic meter;
Battery life is more than 6 years based on low power consumption design, low battery
alarm;
Accurate measure due to anti-jamming and magnetic features based on non-magnetic
sample patents technology;
 

	Item	Function
Display	LCD screen	Display status of input water volume, surplus water  volume, total volume, payment, closed, open, error,  low battery, under attack
	Digital show	maximum total water volume 9999.9 m3
	Water supply control	Auto closes the valve when water volume is little,  and open when inserting new prepaid card.
	Low battery alarm	Auto closes the valve when battery is low, prompt to  change the battery
Auto Control	Hardware security	Auto closes the valve when the pulse line is cut off,  and alarm under attack, which must repaired by  administrator
	Anti magnetic attack	Auto closes the valve when strong magnetic close  to the meter, need inserting card to reopen the meter
	Power off detection	Detecting the circuit after power up to check normal  or not.
	Waterproof	Reading card as normal even the meter part is in  water
	Auto maintenance	Automatic switch valve for discharge once a month
	Water quota	You can set a limit to use water. Unable to input  water volume more than limit
	Zero-crossing solution	User information would feedback to the superior  software for processing when the valve failure to  close in zero-crossing. Extra water volume will be  record.
Working features	Moisture-proof pulse line	The pulse output is not affected by moisture, data  will record as normal.
	Multi-application card	The first inserting of card in a new water meter will  write in Card No. User ID, Water Volume. A card  would serve in a total of 4 set of cold water meter,  hot water meter, heat meter and pure-water meter  at the same time
	Data Recovery	When the meter is damaged, please insert the  read-in card to collect user data and transfer data  by inserting to a new meter
	Initialization	Remove all information in the meter by inserting  Initialization card, and set the starting line of water  meter
	Control card	When the meter break down, please insert control  card to detect fault or to force the valve open.
	Card Reissue	You can register a new card with original data if lost  the user card

 
Technical standards: ISO4064,GB/T778,JB/T8802,JJG686,CJ/T133
 Valve Life : ≥5,000 times
 RF Card Life :≥100,000 times
Power Supply : 3.6V lithium battery, life≥6 year
Security : Unique Card per Meter, uncopiable
 Static Working Current (μA): ≤6
  Options
 Meter for hot water up to 90 ℃ is available, 93% RH.
 Vertical water meter of this type is available.
  Maximum permissible error
From the minimum flow rate Q1 to the lower zone of the transitional flow rate Q2 :≤±5%
From the transitional flow rate Q2 to the high zone of the maximum flow rate :≤±2%
Installation requirements
 Clean the foreign matter from the inside pipe.
 This kind of water meter couldn't be spoiled in the hot sun,humid,
freeze,chemistry,electronic pollution, easy for dismantle,reading, and credit the user card.
 Horizontal install/ Vertical install, the direction mark should in accordance with the
flow direction. Leave length about 6-12 times of the pipe diameter at the front of the
water meter, and length about 4-6 times of the pipes diameter at the back of the water
meter for the accuracy measurement.

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