? ☆ Shanxi Shanxi's large-diameter water meters offer large caliber water meter № № Shanxi large diameter water meter price ★ 
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 Shanxi large diameter water meter ☆: 
 R & D and production company in Shanxi 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 of large diameter water meter in Shanxi, Shanxi, large caliber water meter 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) Shanxi large diameter water meter will automatically its electric valve Close The user simply used to purchase water into the large diameter water meter in Shanxi write card sensing area to sense the large diameter water meter within the Shanxi Electric valve re-open the remaining water (ie, Shanxi large caliber water less than 5m3 to exhaustion this time, the Shanxi large caliber water five times without water the way to remind the user to purchase the water). To the exhaustion of the remaining water in the Shanxi large diameter water meter, not the purchase of water and write Shanxi large caliber water meter, electric valve will be closed until the user to purchase water and write Shanxi large caliber water meter within the date. In order to achieve the first to buy the water, the purpose of water ". 
 ? Shanxi large caliber water meter is exhausted in the remaining water and electric valve is closed, for some reason (such as electric valve internal leakage, etc.) water flowing through the large caliber water meter in Shanxi, Shanxi large caliber water meter will continue to be measured, the number counted as negative values, Shanxi large diameter water meter will first deduct the negative values ??(ie, the first overdevelopment of water) when the user to re-purchase of water and write Shanxi large caliber water meter, water newly written enough deductible super negative values ??of the water, the large diameter water meter within the Shanxi Electric valve does not open but remain closed until the remaining water in the large diameter water meter within the Shanxi 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 Shanxi 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 the ability to lift their own attack Shanxi large caliber water limit that it can not indefinitely human attack behavior of large diameter water meter in Shanxi. The Company produced multi-presented two of the company's trademark and warnings tamper shrink film than other Shanxi large caliber water meter for each installation on its pre-set into the receiver, the Shanxi-caliber water meter installed and leak testing after passing tamper shrink film set in Shanxi's large-diameter water meter to take over the nut, and then use a 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 verification and validation of Shanxi's large-diameter meter accuracy; h. overall closed-shell design, anti-attack, waterproof, moisture, fumes, anti-knocking; i the sale of water to read and write 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 Shanxi large caliber water meter and the line marked CJ/T133-2006 Shanxi large caliber water standards. 
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 ? A, Hui Yi brand of Shanxi large diameter water meter Introduction Shanxi large diameter water meter is defective development in recent years, ordinary Shanxi large caliber water in a small flow (less than 8L / H) measured up. Ordinary Shanxi 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 can be used less than the starting flow of this drip Shanxi large diameter water meter is not metering access to the water of the RF tube online, so that the water supply enterprises suffered losses. To solve this problem, Beijing Hui Yi has developed a differential pressure integral anti-drip Shanxi large diameter water meter, it simply does not change the large diameter of the Shanxi meter movement in advance, the drop out of the water in drip first accumulate, when the save suddenly promoted a certain amount of Shanxi large diameter water meter impeller rotation to achieve the purpose of drip measurement 
 ? Second, the product uses and characteristics: This series of Shanxi large diameter water meter for the total amount of the high sensitivity of flowing through the RF pipe drinking water, its main features are as follows: 1, the smaller the initial flow rate, the initial flow rate is less than 0.5 L / h; more than 16 times the ordinary Shanxi 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 that the anti-drip institutions not by 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 institutions, so the The anti-creep performance far superior to the jet and the C-class anti-drip Shanxi large diameter water meter; 4, in the 0.5L / h to 14L / h under the micro-flow state for the intermittent measurement (like Shanxi large diameter positive displacement meter ), and micro-flow range measurement error is smaller; 5, of the authority of experts convened by the Ministry of Construction and the China 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 Shanxi large diameter Water Meter Co., Ltd. sincerely welcome you to Beijing the Huiyi Shanxi large diameter water meter factory guidance visits! 
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