? ☆ Qiongshan RF meter № the Qiongshan RF meter offer № the Qiongshan RF meter price ★ 
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 The Qiongshan RF water meter ☆: 
 Our R & D production Qiongshan RF 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 the the Qiongshan RF meter, the the Qiongshan RF water meter the amount of water purchased by user the water supply valve is automatically opened, when the remaining amount of 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) the Qiongshan RF water meter will automatically within electric valve is closed at this time to write into the the Qiongshan RF meter Card Users only need to purchase water sensing area to sense it can be Qiongshan RF water meter, electric valve to re-open (ie Qiongshan RF water meter within the remaining water is less than 5m3 to exhaustion this time, the the Qiongshan RF meter five times without water way to remind users to purchase water). To Qiongshan radio frequency water meters within the remaining water is exhausted, the users do not purchase water and write within the the Qiongshan RF water meter, electric valve will close until the new users to purchase water and write the Qiongshan RF water meter inside so far. In order to achieve the first to buy the water, the purpose of water ". 
 ? When the Qiongshan RF meter in the remaining water exhausted and electric valve is closed, for some reason (such as electric valve internal leakage) flow through the the Qiongshan RF meter, the Qiongshan RF water meter will continue to measurement, the number counted as a negative value, when the users to purchase water and write the Qiongshan RF water meter, the the Qiongshan RF water meter will first deduct the negative values ??(ie, the first also super water), if the new write enough water deductible super negative values ??of the water, the electric valve in the the Qiongshan RF water meter does not open and continue to be closed until the remaining water in the the Qiongshan 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, you can own the electric valve to open and Qiongshan 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 do the self-lifting the Qiongshan RF water meter attack, but also to limit the behavior so that it can not indefinitely of Qiongshan RF water meter man-made attack. The Company produced than other Qiongshan RF meter each multi-presented two of the company's trademark and warnings tamper shrink film, installation, pre-set into to take over, Qiongshan RF water meter installed and leak testing and qualified, it will tamper shrink film on the in Qiongshan RF receiver of the water meter nut, then use the hair dryer (1600w fever hair dryer) to blow or Shrink Film Department at the tamper Pour hot water above 90 ℃ alignment tamper 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 carriers, electronic 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 measurement display using electronic and LCD Dual Display , which does not affect the verification and calibration of the the Qiongshan RF meter accuracy; h. overall closed-shell design, anti-attack, waterproof, moisture, fumes, anti-knocking; i the sale of water to read and write card machine can separate use, 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 Qiongshan RF water meter and line marked the CJ/T133-2006 the Qiongshan RF meter "standard. 
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 ? First, the the Huiyi brand Qiongshan RF meter Introduction Qiongshan RF water meter is in recent years for ordinary Qiongshan RF meter in a small flow (less than 8L / H) development of non-quantified defect. Ordinary Qiongshan RF water meter due to movement of the rotating parts and count the gear inertia, and therefore 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, and thus small flow can not be measurement, it is way less than the starting flow of this drip the Qiongshan RF meter not measured to obtain the water 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 Qiongshan RF water meter, it simply is not change the Qiongshan RF meter movement in advance, the drop out of the water in drip first accumulate, when save a certain amount of a sudden promote the Qiongshan RF water meter rotating impeller to achieve the purpose of drip measurement 
 ? Two, the product uses and characteristics: The Series the Qiongshan RF water meter for the total amount of the high sensitivity to flows through the tube 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 Qiongshan 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 that the anti-drip institutions will not be blocked or stuck in the impurities in the water; 3, anti-slip performance: ordinary movement velocity, not idling, soft diaphragm can offset part of the water hammer pressure, coupled with anti-drip institutions closed, so its anti-creep performance is far superior to the jet and C-level anti-drip the Qiongshan RF water meter; 4, 0.5L / h to 14L / h under the micro-flow state for the intermittent measurement (like displacement Qiongshan 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 
 ? Beijing Hui Yiqiong Hill RF Water Meter Co., Ltd. of all members sincerely welcome you to Beijing the Hui Yiqiong Hill RF water meter plant guidance inspection 
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