? ☆ Tianjin large diameter water meter № Tianjin large diameter water meters offer № Tianjin caliber water meter price ★ 
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 Tianjin large diameter water meter ☆: 
 Our R & D production in Tianjin large diameter water meter, RF card as the media will be all kinds of information in the form of an induction input to the control CPU inside the large diameter water meter in Tianjin, Tianjin large caliber water meter the amount of water purchased by the user automatically open the valve water supply, when the surplus water to less than 5m3 (including 5m3) but have not yet exhausted, and every integer (for example, the remaining water to 4m3, 3m3, 2m3, 1m3), Tianjin large diameter water meter will automatically within the electric valve Close Users only need to purchase water use at this time to write cards into the large diameter water meters in Tianjin sensing area to sense what the electric valves in the large diameter water meter within the Tianjin re-open the remaining water (ie, Tianjin large caliber water less than 5m3 to the exhaustion of this period, Tianjin caliber water five times without water way to alert the user to purchase water). To the exhaustion of the remaining water in the large caliber water in Tianjin, less than the purchase of water to and write Tianjin large caliber water meter, electric valve will be closed until the user to purchase water and write Tianjin large caliber water meter within the date. In order to achieve the first to buy the water, the purpose of water ". 
 ? Tianjin large caliber water meter is exhausted in the remaining water and electric valve is closed, for some reason (such as electric valve internal leakage) flow through the large caliber water in Tianjin, Tianjin large caliber water meter will continue to be measured, the count of the number of negative values, when the users to purchase water and write large caliber water in Tianjin, Tianjin large caliber water meter will first deduct the negative values ??(ie, the first also super water), water newly written enough deductible super negative values ??of the water, the electric valve is Tianjin large diameter water meter is not open and continue to be closed until the remaining water in the large diameter water meter within the Tianjin 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 purchase water card to (sensing area) induction, you can own the electric valve to open and Tianjin large diameter water 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 of large caliber water in Tianjin attack ability, but also limit that it can not indefinitely human attack behavior of large diameter water meter in Tianjin. Produced by our company, multi-presented two of the company's trademark and warnings tamper shrink film than other Tianjin large caliber water meter for each installation, its pre-set into the receiver on, Tianjin caliber water meter installed and leak testing after passing tamper shrink film set in the large diameter water meters in Tianjin to take over the nut, and then use a hair dryer (1600w high heat hair dryer) at the tamper shrink film at blowing 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, a table card wear, fast transmission of information, confidentiality and anti-attack performance, high reliability; b. using the LCD shows the total quantities of water purchased, the remaining water and all kinds of information; c 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, the static power consumption is zero; e-. electric control valve is a 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. measurement display a table multi-card and dual LCD display, which does not affect the Tianjin large diameter water meter accuracy test and calibration; h. overall closed-shell design, anti-attack, waterproof, moisture, anti-smoke, anti-knocking; i its sale of water to read and write The card 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 GB GB/T778-1996 cold water Tianjin caliber water meter and the line marked CJ/T133-2006 Tianjin large caliber water standards. 
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 ? Tianjin large diameter, a, Hui Yi brand meter Introduction to Tianjin large diameter water meter is defective development in recent years, large-diameter water meter for ordinary Tianjin small flows (less than 8L / H) measured up. Ordinary Tianjin large caliber water 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 counter gear, thus the micro flow can not be measured at , people can be less than the starting flow of this drip Tianjin large diameter water meter is not metering water to obtain a multi-card tube online, so that the water supply enterprises have suffered losses. To solve this problem, Beijing Hui Yi has developed a differential pressure integral anti-drip Tianjin large diameter water meter, it simply does not change the large diameter of the Tianjin meter movement in advance, the drop out of the water in drip first accumulate, when the save suddenly promoted a certain amount of Tianjin large diameter water meter impeller rotation to achieve the purpose of drip measurement 
 ? Second, the product uses and characteristics: This series of Tianjin large diameter water meter for the total amount of the high sensitivity to flow through a multi-card pipe drinking water, its main features are as follows: 1, the smaller the initial flow rate, the initial flow rate less than 0.5L / h; more than 16 times the ordinary Tianjin large diameter water 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 body will not be blocked or stuck by impurities in the water; 3, anti-slip performance: general movement is a multi-flow rate, not idling, soft diaphragm can offset part of the water hammer pressure, coupled with anti-drip closure of institutions , so the anti-creep performance is far superior to the jet and the C-class anti-drip Tianjin large diameter water meter; 4, in the 0.5L / h to 14L / h under the micro-flow state for the intermittent measurement (like displacement Tianjin caliber water), and micro-flow range measurement error is small; 5, of the authority of experts convened by the Ministry of Construction and Water Association to identify 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 Beijing the Huiyi Tianjin caliber meter Co., Ltd. sincerely welcome you to Beijing the Huiyi Tianjin large diameter water meter factory guidance visits! 
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