? ☆ Lianyungang smart meter the № smart meter offer to № smart meter price ★ 
 ? ☆ Lianyungang smart meter smart meter for my company R & D and production, based on RF card as the media, all kinds of information in the form of an induction input to the control CPU of the smart meter, the amount of water purchased by the user of the smart meter 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) the smart meter will automatically electric valve in its shut down, this time Users only need to purchase water on the smart meter card write "sensing zone" to sense the electric smart meter valve to re-open (ie, the remaining amount of water within the smart meter is less than 5m3 to exhaustion during this time within the smart meter to remind the user to purchase water five times without water way). If to the exhaustion of the water remaining within the smart meter, the user is not purchased water and written to the smart meter, the electric valve will close until the user to purchase water and write smart meter within the date. In order to achieve the first to buy the water, the purpose of water ". 
 ? Information, please contact Tang cocoa 18,701,502,378 QQ 1024492555 When the smart meter is exhausted in the remaining water and electric valve is closed, for some reason (such as electric valve internal leakage, etc.), measurement of flow through the smart meter, smart meter will continue their number is counted as a negative value when the user to re-purchase of water and write a smart meter, smart meter will first deduct the negative values ??(ie, the first overdevelopment of water), water newly written enough deductible super water negative values, the smart meter electric valve does not open and continue to shut down, until the water remaining within the smart meter is 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 electric valve is opened and the smart meter working 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 of the attack the ability of the smart meter, and limit the behavior so that it can not be unlimited for smart meter man-made attack. The Company produced more than other smart meter each presented two of the company's trademark and warnings tamper shrink film, installation, pre-set into the take over the smart meter installed and leak testing and qualified, the anti-demolition of heat shrinkable film set in the smart meter to take over the nut, and then use hair dryer (1600w high heat hair dryer) at the aligned anti-tamper shrink film at the blow or above 90 ℃ hot water demolition poured shrink film, shrink film, shrink to take over the shape of the nut to tight coupling. 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 verification and validation of the smart 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 and 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 the GB GB/T778-1996 cold water smart meter "and the line marked CJ/T133-2006 smart meter" standard. Huiyi brand smart meter Introduction to the smart meter is developed in recent years for ordinary smart meter in a small flow (less than 8L / H) measured at defects. Ordinary smart 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, people can be less than the starting flow of this drip smart meter is not metering to obtain water of the water pipe-line, so that the water supply enterprises suffered losses. To solve this problem, Beijing Hui Yi has developed a differential pressure integral anti-drip smart meter, simply does not change the movement in advance of the smart meter will drop out of the water in drip first accumulate when the save to a certain amount of suddenly promote smart meter impeller rotation to achieve the purpose of drip measurement 
 ? Two, the product uses and characteristics: This series of intelligent water 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 ; is 16 times more common smart meter; adaptability to water quality: the anti-drip institutions and outlet of the drainage channel distance of 4mm, by particles below 4mm, so that the anti-drip institutions will not be in the water impurities 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 far superior to the jet and C-level anti-drip smart meter; 4, 0.5L / h to 14L / h under the micro-flow state for the intermittent measurement (as if the volume of the smart meter), and micro-flow range measurement error is small; 5, convened by the Ministry of Construction and the China Water Association, China's authoritative experts on the products and technologies to identify, 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 
 ? Beijing Huiyi Zhi Water Meter Co., Ltd. of all members sincerely welcome you to Beijing Hui Yizhi meter factory guidance inspection