? The ☆ Hunan card meter factory № Hunan, credit card water meter offer № the Hunan card meter price ★ 
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 ? Service phone 18,701,502,378 13,716,900,928 18,701,502,378 
 ? The Hunan card meter ☆ Official Website: http://tangcuiqin.jdzj.com 
 ? This page URL: http://www.qinaiping.icoc.cn/ 
 ? Hunan, R & D and production company, credit card water meter, based on RF card as media, all kinds of information in the form of an induction input to control the CPU of Hunan card meter, the Hunan card water meter to the water purchased by the user automatically open the valve the water supply. When the remaining water to less than 5m3 (including 5m3) but have not yet exhausted, every integer (for example, the remaining water to 4m3, 3m3, 2m3, 1m3) Hunan card meter will automatically be electric valve in its shut down, this time Users only need to purchase water into Hunan card write credit card water meter sensing area to sense can re-open the electric valve Hunan card meter (ie, the remaining water in Hunan card meter is less than 5m3 to exhaustion During this time, Hunan card water meter to alert the user to purchase water) five times without water. Users do not purchase water to the remaining water exhausted Hunan card meter and write the Hunan card meter, the electric valve will close until the user to purchase water and write Hunan credit card water meters within. In order to achieve the first to buy the water, the purpose of water ". 
 ? Information, please contact Tang cocoa 18701502378 QQ 825727473 
 ? Official website: http://tangcuiqin.jdzj.com http://www.qinaiping.icoc.cn/ Hunan card water meter is exhausted in the remaining water and electric valve is closed, for some reason (such as electric valve internal leakage , etc.) as well as water Hunan card meter, Hunan card meter will continue to be measured, the number counted as a negative value, when the user to re-purchase of water and write Hunan card meter, the Hunan card meter will first deduct its negative values ??(ie The first super also with water), water newly written enough deductible super negative values ??of the water, Hunan credit card electric meter inside the valve does not open and continue to be closed until the Hunan credit card the remaining water inside the water meter is positive. When the Company suffered such as magnetic and other external attacks, within one minute inside the electric valve shut down. At this point, the user can be induced to purchase water card to (sensing area), you can own the electric valve is opened and Hunan card meter work properly. However, if such an attack accumulated more than 10 times more users to purchase water card will no longer be able to open its electric valve (in case the user man-made attack), high a check card (water management The department only holds) to the electric valve is opened, the same time attack record clear (after the user configuration of the water cards but also because of the attack and then open the 10th). Both do their own ability to lift the the Hunan card meter of the assault, but also to limit the behavior so that it can not be infinite on the the Hunan card meter man-made attack. Produced by our company than other Hunan credit card more than a meter each presented two of the company's trademark and warnings tamper shrink film, installation, its pre-set into the take over on the Hunan card meter installation completed and leak testing and qualified, tamper shrink film in Hunan card meter take over the nut, and then use a hair dryer (1600w high heat hair dryer) at the tamper shrink film at the blowing or use hot water above 90 ℃ alignment tamper Pour of shrink film, shrink film, shrink to take over the shape of the nut to the hoop tight. To split the table must be tamper destruction of heat shrinkable film, thus preventing the artificially split the table for the purpose of stealing water. In addition to the above characteristics, the product, the following characteristics: (a) non-contact (RF card) information carrier, no mechanical wear, fast transmission of information, confidentiality and anti-attack performance, high reliability; (b) with LCD display the total quantities of water purchased, and the remaining water and all kinds of information; when the remaining water is zero or alarm value, automatically close the valve without water; d the entire system is usually in the off state, static power consumption is zero; (e) electric control valve patented electric valve to completely overcome the electromagnetic valve interference and shutdown lax defects; f unique anti-theft of water, tamper table, anti-reversal device; g metering display by mechanical and LCD Dual Display does not affect the the Hunan credit card verification and calibration of the meter accuracy; h, the overall closed-shell design, anti-attack, waterproof, moisture, fumes, anti-knocking; i read and write cards of the sale of water management unit may be used alone, can also use the computer network. The company produces technical parameters are as follows: Working power supply: two 3.6V lithium battery, the working life of 8-10 years; (b) usually work current: 0A; c instantaneous operating current :1-5MA; d. RF card Life time:> 100 000; (e) Working pressure: 1MPa below normal work; (f) the operating temperature range (temperature) :0.3-40 ° C; g. the whole life of 8-10 years. This product complies with the GB GB/T778-1996 cold water Hunan card meter "and the line the standard CJ/T133-2006 Hunan card water meter standards. A, Hui Yi brand Hunan card meter Introduction Hunan card water meter is developed in recent years aimed at Hunan card meter 8L / H) measurement of small flows (less than defects. The ordinary Hunan card meter due to movement of the rotating parts and count the gear inertia, so in the measurement process if the water flow to a certain extent will not be able to promote the movement of the impeller and the counter gear, thus the micro flow can not be measured, people can be way less than the starting flow of this drip the the Hunan card water meter not measured to obtain the water pipe line of water, so that the water supply enterprises suffered losses. To solve this problem, Hunan Hui Yi has developed a pressure differential integral anti-drip Hunan card meter, simply does not change the Hunan card meter movement in advance, in drip drops out of the water first accumulated up when save to a certain amount of suddenly promote the the Hunan card meter impeller rotation to achieve the purpose of drip measurement 
 ? Second, the product uses and characteristics: This series of Hunan card meter for the total amount of the high sensitivity of flows through a water pipe drinking water, its main features are as follows: 1, the smaller the initial flow rate, the initial flow rate of less than 0.5L / h; ordinary Hunan card meter 16 times or more; adaptability to water quality: due to the drainage channel between the anti-drip institutions and outlet distance of 4mm, so by particles below 4mm, so that anti-drip institutions will not be impurities in the water is clogged or stuck; 3, anti-slip performance: ordinary movement is the flow rate, not idling, soft diaphragm can offset part of the water hammer pressure, coupled with anti-drip closure of the institution, so the anti-creep performance far superior to the jet and the C-class anti-drip Hunan card water meter; 4, 0.5L / h to 14L / h under the micro-flow state for the intermittent measurement (like displacement Hunan card meter), and this micro- the flow range of measurement error; authoritative experts, convened by the Ministry of Construction and the China Water Association, our identification of the products and technologies, and its technology has reached the leading domestic level. Can guarantee the normal work for more than 10 years of anti-drip institutions. Conditions of use: the work of the water temperature does not exceed 40 ℃, working pressure is not greater than 1Mpa. Four, show error: less than the minimum flow (Qmin) of the trace does not count; from including minimum flow (Qmin) to but excluding the boundaries of flow (Qt) of low district: ± 5%; from including the boundaries of flow (the Qt) to include overload In the upper zone of the flow (Qmax): ± 2%. Pressure loss: △ ≤ 0.1Mpa 
 ? Hunan Hui Yi Hunan card of all members of the Water Meter Co., Ltd. sincerely welcome you to Hunan Hui Yi Hunan card meter factory guidance inspected!