Chengdu meter 
 1, Chengdu course of development of water meter: since the 19th century British invention of the first units of the meter so far, water industry has more than one hundred years of history of the development. Chengdu water meter mechanical structure from Nanchang to Nanchang mechanical water meters, the Nanchang card table complete range, features a variety of water measurement instrumentation products series. 
 □ □ Chengdu meter ◤ Mujing Li 136-0117-5960 / / 134-6647-7624 ◥ QQ 2362989765 
 □ □ Chengdu water meter characteristics 
 The Chengdu meter | | Chengdu meter price \ \ Chengdu meter quote 
 1 □ □ the Chengdu meter conditions of use: the water temperature 0.1 ~ 30 ℃ Water pressure rating: MAP10 3. Climatic and mechanical environmental safety class: Class C 4. Electromagnetic Compatibility Level: E2, 5. Flow profile sensitivity levels: U10 is D5, 6 The pressure loss rating: △ P25 maximum permissible error. RF card prepaid card meter card meter of the company's newly developed high-tech mechanical and electrical integration, advanced microcomputer control technology as the core, non-contact plug the Kaka technology for information transmission media consisting of high-card based instruments . Is a pre-paid, automated metering, status, alarm and prevent the improper use of functions in one high card, with accurate measurement and reliable performance, compact structure and reasonable. Rotor type water meter, the meter base table, the installation of a new low-power, no pressure drop in high-torque output motor control valve, micro-controller and RF card operating system. The use of advanced encryption technology, the implementation of a table and a card, to ensure the safety and reliability of user data. Performance indicators in line with national standards GB/T778-1996 and the Ministry of Construction industry standards CJ/T133-2001 be applied to residential, enterprises and water metering and charging. The use of the product to change the traditional water management, and change "the first water, after the payment" for the first payment after the water greatly facilitates the management of residential property management department and plumbing departments. 
 One, ◤ Chengdu meter ◥ main technical performance, working environment temperature :0-60 ℃, relative humidity: ≤ 85%, the measured water temperature: cold water, table 0-50 ° C; water table 0-90 ° C; pure water meters 0-35 ℃ Working pressure: 0.02MPa ~ 1MPa technical parameters: Accuracy class and flow range (see table below) nominal diameter (DN) mm measurement 
 Grade maximum 
 Flow Qmax nominal 
 Flow Qn transitional flow Qt minimum flow Qmin starting flow 
 Qs ≤ minimum reading is maximum 
 Reading 
 ??? The Chengdu meter Introduction 
 Card meter is a modern microelectronic technology, modern sensor technology, the card IC card technology to measure on the amount of water and water data transfer card meter 
 Delivery and settlement transactions of the new water meter. The only function of the traffic data collection and mechanical pointer water consumption compared with traditional meter is great progress. Card card meter in addition to recording and electronic display on the amount of water, according to the agreed amount of water control, and auto-complete the calculation of the price ladder in water charges and water data storage function. 
 → Chengdu meter installation 
 1, select the caliber of the water meter shall install the pipe diameter and the frequent use of the flow is equal to or less than (nearly) meter commonly used in the flow. 2, the meter should be horizontally mounted, the surface facing up on the case, the direction of the arrow with the direction of flow. The installation location should avoid exposure, flooding, freezing and contamination, easy disassembly, meter reading. The newly installed pipe must be gravel, flax and other debris within the pipe rinse and then installed water meter in order to avoid the water meter failure. 3, for easy removal and maintenance of water meters on the upstream and downstream should be installed valves, should be used to ensure that all open. 4, the downstream water meter to be installed the necessary straight pipe or its equivalent rectifier, the upstream straight pipe length is not less than 10D downstream straight pipe length is not less than the 5D (D is the water meter public that caliber). Caused by the elbow or the centrifugal vortex phenomenon must be in a straight pipe before installation of the rectifier. 5, the installation of the meter, should be noted that the water meter downstream pipeline outlet higher than the water meter 0.5m to prevent water meter caused incorrect measurement due to lack of water flow within the pipe. 6, the water meter anti-clogging performance is excellent, but the silt to stay in the sediment and weeds in the pipeline to reflect the sensitive and should be avoided during use. If the pipeline within the silt remain the sediment and weeds should be cleared up, otherwise it will affect the meter normal measurement. 
 The ◣ Chengdu meter ◢ Note 
 1, replace the battery must be covered moisture-proof cover, tighten the screws, otherwise the table does not work and credit card E - 5 2, regularly check the card meter run, winter Note antifreeze. 3, has been installed in the pipeline but not delivered to the use of, or long-term (more than a week) do not use water to turn off the card water meter before and after the valve, the Company does not bear the resulting consequences. 4, if the card meter electronic display and the word wheel does not match or card meter failure, the word wheel measurement shall prevail. 
 1, the battery use time: Dimensions ≥ 6 years of card meter and LCD display Schematic diagram of a water meter connection size Figure: The nominal diameter (DN) mm length Lmm width Lmm highly Lmm thread D connection thread length mmAminBmin 1516585115G3/4B10122019585115G1B12142522592120G1/4B121615 (vertical) 17891158G3/4B1012 20 (vertical) 17891158G1B12142, 
 LCD diagram: RF card card water meter and monitor data and non-contact RF card to transfer data through the water meter and LCD display. LCD as shown below: A, show the capacity for five integer and one decimal. B, and eight kinds (valve closed, the valve open, power shortage, abnormal, wrong card, the purchase amount, the cumulative margin) status display. A, explain: 1, the purchase quantity: the purchase of water. "Cumulative": since this meter from the use of cumulative water consumption. 3, shows the "margin": the meter's remaining water availability. 4, showing the valve off ": this water meter valve is turned off. 5, showing the "valve open": This water meter valve is open. 6, showing the "power shortage": The water meter supply lithium battery voltage is too low. 7, showing "abnormal": The water meter exception error. Display card error ": the use of a non-meter used in RF card or did not follow the steps to use each function card. 
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 Card water meter installation instructions for use 
 A selection of water meter specifications should be appropriate to the commonly used flow can not be solely the pipe diameter to determine the caliber of the water meter. Measured water temperature and water pressure when the water meter use should be consistent with the main technical performance requirements of 2 and 3. 2 meter installed on the direction of the arrow in the case must be consistent with the direction of flow must be installed level. The water meter installation location should be able to avoid exposure, and ease of disassembly and observation spaces, the depths of winter insulation measures should be taken. 3, the boiler feed water side installation of water meters must be installed back to the stop valve to prevent damage to the meter of the hot water and vapor return. 4 meter above the non-set aside any items. Note the moisture, moisture, and damage control system affect the user the normal use is strictly prohibited water droplets to penetrate the water meter controller. 5, long-term use, clogged or parts wear and other reasons caused the error, to be overhauled. Users of the seals on the meter shall start and found irregularities shall notify the water company or real estate property companies to overhaul. Special notices: Note installation reserved for the size meter Dimensions must meet the installation requirements, the reserved size of less than a meter enclosure damaged by tension at your own risk. 
 Edit this paragraph, the test method 
 Card meter test according to the manufacturer's technical conditions and GB/T778. Test items: visual inspection (including shape, size, etc), hydrostatic testing, showing error, flow measurement and accelerated wear test. Number of water meters were at least three, it is necessary to increase the number of water meters were up to 10. 
 Sign 
 Arrow indicates the direction of flow meter nominal diameter convex cast out on the case. Marked on the dial trademarks. Marked below the cover of the measurement level and the manufacturing number. 
 Packaging, storage and transportation 
 Each card water meter should be a separate small package, and can prevent a collision in the shipping and handling, water should be placed horizontally. The meter is an instrument, the packaging should be clearly marked "up" and "light" tag. The water meter should be stored at ambient temperature for 5-40 ° C, the air does not contain corrosive medium dry place. 
 ? The Chengdu meter main technical indicators: 
 1, Model: FS 
 2, specifications (public, said the caliber): DN 15 ∽ DN300 meter 
 3, the accuracy rating: 2.0 
 The implementation of standards: GB/T778-2007 
 5, the implementation of verification procedures: JJG162-2009 
 6, the power supply voltage: 3.6V lithium battery 
 7, the quiescent current: ≤ 10uA 
 8, showing error limit 
 A, from the minimum flow (Qmin,) does not include the lower zone of the transitional flow (Qt): ± 5% 
 B, from transitional flow (Qt) to the upper zone of the cross-sectional flow (Qs): ± 2% 
 9, the rated working pressure: ≤ 1.6Mpa 
 10, the use of ambient temperature: (0.1 ∽ +50) ℃ 
 11, relative humidity: (30% ∽ 95%) RH 
 12, the pressure loss: ≤ 0.063MPa 
 13, the sensitivity level of the flow profile: U10, D5 
 14, the climatic and mechanical environmental safety class: B class 
 15, Electromagnetic Compatibility Level: E1 
 The の Chengdu meter | | Chengdu meter price \ \ Chengdu meter quote 
 The の Chengdu meter | | the Chengdu meter price \ \ Chengdu meter offer consulting Mujing Li :136-0117-5960 / / 134-6647-7624