? @ The Dingxi IC card water meter given the price of West IC card water meter / / Dingxi IC card water meter 
 ? Contact Dingxi IC card water meter IC card water meter factory in Dingxi FS Series the Dingxi IC card water meter and FS Series is the contactless card technology, card technology will be exposed and the water meter production perfect fusion. 
 ? The contacts Mr.Tang 18701502378 QQ: 1024492555 Website: http://hunantcq.jdzj.com/ 
 ? The main technical parameters] 
 ? A measurement uncertainty 
 ? 2, the measurement range and weight of the quality and quantity of the table (see next page) 
 ?, Special weight quality formula 
 ? Quality of Mj --- order they load the j weight, kg; 
 ? Pj - in the reference temperature and the standard acceleration of gravity, load pressure value generated by the j-th block weight, pa (Mpa) 
 ? AO and - in the zero pressure and reference temperature, was seized piston manometer piston area, m; 
 ? G ------ place of use acceleration due to gravity, m/s2; 
 ? Pa ------ ambient air density, its value is preferable to 1.2 kg / m3; 
 ? Of Pm --- weight density of the material, its value is desirable ρ carbon steel: 7.8 * 103 kg / m3 
 ? Ρ - aluminum: 2.73 * 103 kg / m3 
 ? Ρ stainless steel: 7.93 * 103 kg / m3 
 ? Ρ tungsten carbide: 14.7 * 103 kg / m3 
 ? Λ ----- Pistons - Piston and cylinder components of the pressure deformation coefficient of PaO-1 
 ? (1) the Dingxi IC card water meter-sectional area 42 × 25 × 2mm (thickness) aluminum rectangular tube, aluminum tubes underside of 3.5mm two ribs. 
 ? (2) the Dingxi IC card water meter high quality white pine by the dry amorphous handling, light weight, low cost material class. 
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 ? (3) the Dingxi IC card water meter take the rail seat aluminum alloy probe for steel, good wear resistance. 
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 ? (4) the Dingxi IC card water meter narrow gauge given the West, IC card water meter vertical table-sectional area of ??35 × 25 × 3mm aluminum-shaped profile. 
 ? (5) the Dingxi IC card water meter ride the rail seat to wear nylon 66, the probe for the steel wear resistance. 
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 ? (6) the Dingxi IC card water meter at both ends are equipped with high-pressure polyethylene insulation jacket, the fixed end of the ABS insulation, plywood, pipe inside the insulating barrier layer, good insulation properties. 
 ? [Structural principles and characteristics] 
 ? Piston gauge (hereinafter referred to as the pressure gauge) working principle is the principle of phase equilibrium is formed based on the face fluid pressure acting on the piston under the force of gravity and the top of the weight imposed on the release plug is made. 
 ? This manometer has the following characteristics: the piston system (piston, piston-cylinder) with tungsten carbide manufacturing, and thus deformation error is small, the additional temperature error is small, wearable, long piston system size constant; easy reading; higher than 30Mpa pressure gauge using sebacate (2 - ethyl hexyl) ester to preach the pressure medium, its viscosity at 20 ℃ (20-25) mm2 / s, far less than the domestic pressure gauge with pressure transmission the media, castor oil viscosity (900-1100) mm2 /, thus greatly improving the sensitivity and measurement range widened, causing pressure system precision machining, hard light, reliable sealing; docking station made of aluminum alloy, light weight, sturdy and beautiful catheter material 1Cr18Ni9Ti stainless steel pipes, rust-proof, beautiful and reliable. 
 ? [Operating mode】 
 ? A mains power supply mode 
 ? Live GPRS data collection terminals with 220V power supply, the shortest time of data acquisition time interval of 1 minute, real-time transmission of data, but can also set the device time interval. 
 ? Analysis of advantages: 
 ? (1) can always monitor the Dingxi IC card water meter flow information. 
 ? (2) time interval is short, data-intensive, and ultimately the formation of graphics software more standard analysis of the results more accurate. 
 ? Analysis of shortcomings: 
 ? (1) site conditions require strict and must be able to provide 220V power, as far as possible the environment of the scene requires dry. 
 ? (2) data collection launch time interval is short, data-intensive lead to a large amount of data, so the equipment daily communication costs. 
 ? 2 lithium battery power supply 
 ? Live GPRS data collection terminal with 7.2V lithium battery powered, the shortest time of data acquisition time interval of 5 minutes, 24 times within two hours can be collected, packaged in the form of data transfer every two hours, usually the device is in low-power standby mode. 
 ? Analysis of advantages: 
 ? (1) can overcome the usual work site mains. 
 ? (2) The service life of up to two years or more, lithium batteries can be replaced. 
 ? (3) communication costs significantly reduced, the minimum is $ 5 per month. 
 ? To sum up: a lot of the scene of the the Dingxi IC card water meter company to consider the actual circumstances of the mains, it is recommended that the use of lithium battery power supply, both able to overcome the site harsh environment, the battery life is also more than 2 years, while the cost of communications is very low, but also to meet the requirements of the Water Division of the amount of data. Of course, in the scene mains electricity power supply, in short, the two power supply can be selected in accordance with the actual situation of the site. 
 ? GPRS data collection terminal 
 ? GPRS data collection terminal of the main features: 
 ? (1) metal bulkhead structure, strong anti-jamming capability and the ability of water-resistant to IP68 the highest level; 
 ? (2) large capacity memory store two months of historical data, greatly improving the data storage density; 
 ? (3) its comprehensive feature set, via cell phone for debugging, convenient on-site commissioning; 
 ? (4) Portable, small size, installation and maintenance easier 
 ? (5) equipment to complement the copy function, to ensure data integrity. 
 ? (6) The device has a security function, connected to the and Dingxi IC card water meter with backflow prevention, anti-magnetic interference, anti-cut line alarm functions; remote control valve switch 
 ? (7) the scene of a device can simultaneously monitor two Dingxi IC card water meter and above 
 ? (8) transmission distance up to infinity and the signal stability 
 ? 
 ? 【Use】 
 ? A pressure gauge should be placed on a solid and vibration free platform level control on the pressure gauge bulbs should be at the center position. 
 ? 2, the use of ambient temperature (20 ± 2) ° C, and its volatility is not greater than ± 0.5 ℃ environment. 
 ? 3, following pressure transmission medium 30MPa pressure gauge, and of kerosene and transformer oil mixture, 20 ° C 
 ? When the viscosity (9-12) m m2 / s, more than 30MPa pressure gauge should be used sebacate (2 - ethylhexyl) ester, 20 ℃, viscosity (20-25) m, m2 / s, acid value not greater than 0.05KOH mg / g, should be kept clean, regular replacement. 
 ? 4, should be strictly in accordance with the procedure (see below) operation). 
 ? 5, weight addition and subtraction should be the heart, not collision weight hanging orchids, to avoid piston break. 
 ? 6, rotating piston, his hands to force uniform, so as not to break the piston rod. 
 ? 7, the pressure more than 60MPa, should turn the piston, and then began to pressure. 
 ? 8, manometer measurement baseline (piston end) with the measured instrument in the same horizontal plane, the larger should be such as not in the same horizontal plane and the difference between the value correction (if the measured instrument piston pressure gauge, and since beginning balance from time to amend the measurement). 
 ? Should be periodic checks with the relevant provisions. 
 ? [Steps] 
 ? A loaded piston system 
 ? A spin out of the manometer piston limit screw. 
 ? B, special tools (see figure III) into the piston cylinder, turn the tool, the tool prominent part into the compression nut slot, and then counter-clockwise until the nut completely out of the piston cylinder seat, this time can be dedicated tool to mention to go under the compression nut. 
 ? Then the B side of the special tools inserted into the piston cylinder seat, first turn the tool textured horizontal axis, so that the tool Da, into the plug, then tighten the horizontal axis, to intensify the plug on the tools mentioned, remove the plug . 
 ? C, observe the O-ring bit is centered in the piston cylinder seat, if not the center, should be placed in the center position. 
 ? D wash the piston and piston-cylinder gas oil with clean air. 
 ? E-clamped piston cylinder, with a special tool (Note: Number one end up), gently vertically into the piston cylinder Block, and then compression nut mounted on the tool, the vertical into the piston cylinder seat will tool clockwise confirm the compression nut and the piston cylinder Block anastomosis, may continue to rotate the tool until the compression nut to suppress the piston cylinder. Water meter the Dingxi IC card water meter ┢ direct sales Dingxi, ┦ Suzhou, IC card to set the West IC card water meter ℉ Suzhou West IC card water meter mechanical Dingxi IC card water meter ℅ Suzhou RF card set 
 ? Close the left pressure relief valve, open the right contained the stop valve and the left rear piston valve. 
 ? G, will clean the pressure transmission medium into the oil cup. (Factory oil cup with medium) 
 ? H, while the pre-pump pressure slowly while observing whether the piston-cylinder pressure transmission medium to overflow, the overflow does not contain air bubbles when the pressure transmission medium can be a piston vertical gently into the piston cylinder Block, and then turn left measured pressure relief valve so that the piston down to the lowest position, then close the relief valve, tighten the limit screws to hang Lan. 
 ? 2, measuring 
 ? A level adjustment 
 ? Water goods adjusting screw, so that the pressure gauge the level of air bubbles in the central location 
 ? B formula to calculate the weight quality value of each measurement point should be added. 
 ? C, the pressure gauge in a specified environment full pre-heating, usually 1-2 hours. 
 ? D, open the pressure relief valve, globe valve, pre-pump to drain the cavity air, then close the relief valve. 
 ? E, check the piston working position indicator. 
 ? Power piston position indicator pointer to the leftmost. 
 ? F, remove the quick joints, connectors, close the relief valve pre-pump pressure, and expel the air in chamber, then the pressure gauge connected to the measuring instrument and open the table cut-off valve rod. 
 ? Pre-pump pressure 
 ? With the pre-pump pressure, feel cavity has been pressure, you can while continuing to pressure, side exit regulator screw, the length of the longest exit shall not exceed 50mm, then turn off the right side of the cut-off valve. (Note: Do not retire regulator too much force, so as not to damage the screw) 
 ? H, pressure on the plus to put the weight, corresponding to the measurement of pressure with both hands to turn the piston so that rotation speed is about (30-60) r / min, pressure regulator, so that the piston to rise. When the piston work on the position indicator pointer to near zero readings (measuring the piston area, so that the pistons are maintained in the working position, make An Pingheng, to reading). 
 ? I, after the first point of reading, the application of voltage regulator buck; so that the piston down to the lowest position, and then Placing the corresponding weight values ??measured with the second point, and then adjust the pressure and reading on the manometer. Until the measurement is completed (measurement 160Mpa need to preloading more than 5 minutes and then begin testing) 
 ? J, when the measurement of the anti-stroke, still need to use the regulator buck. Operation to avoid blood pressure, especially in the high-pressure measurements, operation of law may very algorithm of fault piston which can damage the pressure gauge pressure relief valve. 
 ? K, the measurement is completed, should open the relief valve, globe valve, pressure regulator screw, restitution, then close the relief valve, and unplug the measuring instruments, plus put in the quick connector plug. 
 ? [Daily maintenance and common sense] 
 ? 1, keep the pressure gauge clean, pressure gauge is not on the humidity is too large, to prevent rust. 
 ? 2, fast connections and bottom of the cylinder O-rings are more prone to damage, if the leak should be replaced. 
 ?, Oil cup liquid is often higher than the oil cup on the filter cover end, if an oversight, the air will enter the pre-pump, resulting in pre-pump failure. Then screw loose pre-pump oil into the joints, the air with the liquid outflow and outflow, when the liquid was continuous outflow, you can tighten the connector, restoring the pre-pump function. 
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