RF Card water meter ; water meter ; DN15

RF Card water meter ; water meter ; DN15

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1000 pc

Supply Capability:: 30000 pc/month

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The RF card water meter (DN15) consists if a valve device, a movement, a sensor, a reducer, a battery, an electorinic module, and a radio frequency card. It has prepaid and cintrilled function.

It implements the CJ/T133 standard. The indication error and measurement width with the GB/T778.1 (equivalent to ISO4064).

The main technical parameters

Pulse constant: 10
Quiescent current: ≤6uA
Dynamic current: implements : ≤20mA
Actuator maximun current : ≤60mA
Working voltage: 2.8V to 3.6V
Q₁ to Q_2,excluding Q₂ indication error ≤±5%, Q₂ to Q₃ (including Q₂) indication error ≤±2%

Features

When the battery is not powered or the battery is replaced, the valve is automatically closed to effectively prevent water theft. When the battery is powered, the valve is automatically opened, which does not affect the user's water.
Anti-attack design, anti-magnetic, anti-vibration. When a magnetic object is close to the water meter, the valve is automatically closed to prevent the magnetic object from interfering with the meter.
Pre-paid function, after the card is recharged, the water is swiped, and the remaining amount or amount is automatically reduced when the water is used. The remaining amount is automatically closed.
For the query funtion, the user can query the remaining amount, water consumption and other related information on the water meter LCD.
One meter to one card, the user first puechases the water card and the water meter is bound, one water meter corresponds to one card is locked.
The card replenishment funtion, the replenishment card continues the data in the original meter and the amount or amount of water remaining
Anti fouling function, automatic opening and closing of the valve at regular intervals, not only prevent ball valve fouling, but also solve the lithium battery voltage hysteresis problem.
Power-down protection function, power off or no power, the microconteoller automatically saves data
Low voltage protection, when the battery voltage is lower than the set valve, the valve is automatically closed.

Flow point verification parameters and installation size parameters

Serial Number	Specification	Maximum flow Q₁	Maximum flow Q₃	Transitional flow Q₂	Minimum flow Q₁	Total length	Width	Height	Connection thread
1	DN15	3.125m³/h	2.5m³/h	0.02m³/h	0.02m³/h	165	82	100	GB 1/2'
2	DN20	4m³/h	4.0m³/h	0.032m³/h	0.032m³/h	195	82	100	GB 3/4'
3	DN25	6.3m³/h	6.3m³/h	0.0504m³/h	0.0504m³/h	225	82	100	GB 1'

Q: Does the card type water meter support only "one card one meter"?: Home card, card activation table and card are only brush off the table, so the owners do not have to worry about the wrong card brush

Q: What should I do when the water meter is turned upside down?: The installation will make water meter readings go backwards, causing huge error meter measurement, a method which is currently the most direct fee evasion. Take a look at the external forces, the water meter upside down, the macro should be a kind of water meter rotation, so the cause of the water meter rotation is also applicable to water reversing. Well, how to solve the inverted water meter? Is the first flip meter, you can buy some water in the industry known as anti flip artifact known as the heat shrinkable soft diaphragm, only need to install the meter when it will be set in the pipe above, with hot water or hair dryer blowing, will be good fit to take over, if you want to split the table will flip to break the heat shrinkable flexible membrane, which is a kind of effective method. The second is simply the problem of water table rotation, although the national standard says the water meter rotation within a certain limit is allowed, but the inverted water meter is completely uncontrollable. At present, only control to avoid the occurrence of water meter rotation, for example, you can install the exhaust valve and check valve, so as to maximize the water meter rotation.

Q: The total water meter and the total value of the water table vary greatly: This can be self-examination: all the taps are closed, to see whether the total water meter is still walking. You can also ask the staff of the water company to check. They have special equipment. Two is to check the house of the water pipe, there is no previously connected bypass pipe, forgotten.

Q: Water meter leakage, water charges who bear?: We should inform users of the characteristics of some commonly used water intaking devices that may cause backwater and return flow, and help users understand the actual situation and protect their own interests.

Q: How long can the smart water meter battery work?: And the total capacity of the battery is not the actual value available, the average best battery, that is, 80% of the battery capacity. With the use of late, internal resistance increased, power consumption is also increasing.General manufacturers use for lithium battery with capacity of 2000mAh, the actual available capacity is about 1200-1300mAh, according to the water quality and the use of different users have many differences in 3-6 years for the more common case.

Q: Which is better, dry water meter or wet water meter?: The friend's question, in my opinion, is really not very professional. Because in terms of intelligent water meters, dry water meters and wet water meters only have different structures, but not good or bad points. Some people say that the metering wet water meter accurately, initial momentum is small, no demagnetization argument, I think it is an individual phenomenon at the early stage of dry water meter production, and now the dry water meter manufacturer had to solve these problems.

Q: Is the water meter really drip proof?: Yes, the water saving drip proof water meter is developed in recent years for the ordinary water meter in the small flow (less than 8L/H) without measuring the defects.

Q: Who will be responsible for the leakage of water before the water meter?: This year, China promulgated the "property law" and clearly defined, water pipes before the leakage of water by the property responsible for the water meter after the leakage of water by households themselves.First, the landlord responsible for the wrong object, tap water company is a national, so whether it is before or after the tube tube shall be borne by the user to bear the cost, unless it is a public area or road pipe Water Leakage, so the landlord should promptly communicate and negotiate with the property.Second, when it comes to maintenance, if you do not have property in the District, and the water leakage in your home, then you must be responsible for your own maintenance costs, but you can not collect the cost of water leakage.

Q: My home water meter rotation, no water leakage, water meter changed a new, but also transferred to consult experts how to do this?: There are three common situations of water meter rotation: pressure fluctuation, water hammer, air bag, in which the water hammer appears in a special situation, which occurs when a sudden switching valve or a power failure occurs.

Q: Do you know the working principle of dry water meters?: For the output pulse meter, there is a wheel mounted on the magnet, the corresponding parts of the dry reed pipe or Holzer sensor, when the wheel drives the magnetic steel to rotate to the sensor position, the magnet magnetic sensor and a pulse.

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