? The ☆ Hunan card water meter factory № the Hunan card 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/ 
 ? R & D and production company Hunan card meter, RF card as the media will be all kinds of information in the form of an induction entered into the the Hunan card meter control CPU, Hunan card meter of water purchased by the user automatically open the water supply valve, 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 within the electric valve closed, the user simply used to purchase water written card into the the Hunan card meter "induction zone" to sense the electric valve Hunan card meter to re-open the remaining (ie, Hunan card meter water is less than 5m3 to the exhaustion of this time, Hunan card meter to remind users to purchase water five times without water). To the exhaustion of the remaining water in Hunan card meter, less than the purchase of water and write the Hunan card meter, the electric valve will close until the user to purchase water and write Hunan card water meter within the date. 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/ after Hunan card meter exhausted in the remaining water and electric valve is closed, for some reason (such as electric valve internal leakage) flow through the 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 the Hunan card water meter will first deduct negative values ??(ie, the first also super water), if water is not enough deductible newly written negative values ??of the super water, Hunan card meter electric valve does not open and continue to be closed until the Hunan card meter The remaining water positive so far. 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 to open 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). Enabling it to achieve self-lifting the Hunan card water meter has been the ability to attack, but also to limit the behavior so that it can not be infinite on the the Hunan card meter man-made attack. The Company produced more than other Hunan card meter each presented two of the company's trademark and warnings tamper shrink film, installation, on its pre-set into the receiver, Hunan card water meter installed and leak testing after passing tamper shrink film set in the the Hunan card meter take over the nut, and then use the hair dryer (1600w high heat hair dryer) at the shrink film at the blow tamper or above 90 ℃ hot water alignment tamper Pour of shrink film, shrink film shrink while the nut take over the shape of 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 , which does not affect the Hunan card verification and calibration of the meter accuracy; h. 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 , but also with computer networking. 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 standards of GB GB/T778-1996 "cold water Hunan card meter" and line marked CJ/T133-2006 "Hunan card meter. About Hunan card meter, the the Huiyi brand Hunan card water meter is defective development of recent years aimed at Hunan card meter in a small flow (less than 8L / H) not measured up. Ordinary the Hunan card water meter due to the movement of the rotating parts and count the gear inertia, so in the measurement process, if the water flow is small to a certain degree will not be able to promote the movement of the impeller and counter gear, thus the micro flow can not be measured at people can be way less than the starting flow of this drip the Hunan card water meter is not measured to obtain water of the water pipe-line, so that the water supply enterprises suffered losses. To solve this problem, Hunan Hui Yi has developed a differential pressure integral anti drip the Hunan card meter, it simply does not change under the the Hunan card meter movement in advance, in drip drop out of the water first accumulate, when the save suddenly promoted a certain amount the Hunan card meter rotating impeller to achieve the purpose of drip measurement 
 ? Two, 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; more than 16 times the ordinary Hunan card meter; 2, 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 anti drip institutions do not will be clogged by impurities in the water or get stuck; 3, anti-slip performance: general movement velocity, 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 is far superior to the jet and C-level anti-drip Hunan card meter; 4 in 0.5L / h to 14L / h under the micro-flow state for intermittent measurement (as if the displacement of Hunan card meter) and micro-flow range measurement error is small; 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 domestic leading 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 
 ? All the members of the Hui Yi Hunan, Hunan card water meter Co., Ltd. sincerely welcome you to Hunan the Huiyi Hunan card meter factory guidance visits!