? ☆ Tianjin RF meter the № Tianjin RF meter offer the № Tianjin RF meter price ★ 
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 Tianjin RF meter ☆: 
 Our R & D production in Tianjin RF water meter, RF card as the media will be all kinds of information in the form of an induction input to the Tianjin RF meter control the CPU, the Tianjin RF water meter the amount of water purchased by the user automatically open 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 RF meter will automatically its electric valve Close Users only need to purchase water used to write into the of Tianjin RF meter card "induction zone" to the sensor the Tianjin RF water meter, electric valve can be re-open the remaining amount of water (ie, within the the Tianjin RF water meter less than 5m3 to exhaustion this time, Tianjin RF meter five times without water way to remind users to purchase water). To the exhaustion of the remaining water in Tianjin RF water meter, less than the purchase of water to and write Tianjin RF meter, the electric valve will close until new users to purchase water and write Tianjin RF water meter within the date. In order to achieve the first to buy the water, the purpose of water ". 
 ? Tianjin RF meter is exhausted in the remaining water and electric valve is closed, for some reason (such as electric valve internal leakage) flow through the Tianjin RF meter, Tianjin RF water meter will continue to be measured, the count of the number of negative values, when the users to purchase water and write Tianjin RF water meter, the the Tianjin RF meter will first less negative values ??(ie, the first also super water), if the water is not enough new written deductible super negative values ??of the water, Tianjin RF water meter, electric valve does not open remain closed until the remaining amount of water within the the Tianjin RF water 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 purchase water card to (sensing area) induction can own electric valve open and the Tianjin RF 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 Tianjin RF water meter attack ability, but also limit the behavior so that it can not indefinitely Tianjin RF meter man-made attack. The Company produced more than other of Tianjin RF water meter each presented two of the company's trademark and warnings tamper shrink film, installation, on its pre-set into the receiver, Tianjin, RF water meter installed and leak testing after passing tamper shrink film set to take over in of Tianjin RF meter 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, 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, so as not to affect the the Tianjin RF 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 the GB/T778-1996 cold water Tianjin RF water meter and the line marked CJ/T133-2006 Tianjin RF meter standard. 
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 ? A Huiyi brand Tianjin RF meter Introduction to Tianjin RF meter in recent years for ordinary Tianjin RF water meter in the micro flow (less than 8L / H) the development of non-quantified defect. Ordinary Tianjin RF water meter due to the 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 RF 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 RF water meter, simply does not change the the Tianjin RF meter movement in advance, the drop out of the water in drip first accumulate when the save suddenly promoted a certain amount of The Tianjin RF meter rotating impeller to achieve the purpose of drip measurement 
 ? Two, the product uses and characteristics: this series Tianjin RF meter for high-sensitivity flows through multi-card the total amount of drinking water of its main features are as follows: 1, the smaller the initial flow rate, the initial flow rate less than 0.5L / h; 16 times more than ordinary Tianjin RF 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 its anti-creep performance is far superior to the jet and the C-class anti-drip Tianjin RF meter; 4, 0.5L / h to 14L / h under the micro-flow state for the intermittent measurement (like displacement Tianjin RF water meter), 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 RF Water Meter Co., Ltd. sincerely welcome you to Beijing the Huiyi Tianjin RF meter factory guidance visits! 
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