?? Set west smart meter @ the Dingxi smart meter price / / Dingxi smart meter 
 ?? The Dingxi smart meter factory production of the FS Series Dingxi intelligent water meter and FS Series contact Dingxi smart meter is the contactless card technology, the contact card technology and water meter production perfect fusion. 
 ?? Contact Mr.Tang 18701502378 QQ: 1024492555 Website: http://hunantcq.jdzj.com/ 
 ?? The main technical parameters] 
 ?? A measurement uncertainty 
 ?? 2, the measurement range and the weight of the quality and quantity in Table 2 (see next page) 
 ?? Four special weight to the quality of the formula 
 ?? Quality of Mj --- sequentially loaded 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 of the acceleration due to gravity, m/s2; 
 ?? Pa, ------ ambient air density, the desirability of its value is 1.2 kg / m3; 
 ?? Of Pm --- weight density of the material, the desirability of its value ρ carbon steel: 7.8 * 103 kg / m3 
 ?? Ρ - aluminum: 2.73 * 103 kg / m3 
 ?? Ρ stainless steel: 7.93 * 103 kg / m 
 ?? Ρ tungsten carbide: 14.7 * 103 kg / m 
 ?? Λ ----- piston - piston cylinder component of the pressure deformation coefficient of the PaO-1 
 ?? (1) Dingxi intelligent water meter-sectional area 42 × 25 × 2mm (thickness) aluminum rectangular tube, aluminum tube bottom 3.5mm two ribs. 
 ?? (2) Dingxi smart meter high-quality white pine by the dry amorphous handling, light weight, low cost material class. 
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 ?? (3) decides to take the rail seat of the West intelligent water meter for the aluminum probe of steel, good wear resistance. 
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 ?? (4) Dingxi smart meter narrow gauge given the West intelligent water meter vertical table-sectional area of ??35 × 25 × 3mm aluminum-shaped profile. 
 ?? (5) given the West the smart meter to take the rail seat to wear nylon 66, the probe for the steel wear resistance. 
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 ?? (6) Dingxi both ends of the smart meter is equipped with high-pressure polyethylene insulation jacket, fixed-side 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 features: 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; high sebacate (2 - ethylhexyl) ester 30Mpa pressure gauge for the pressure transmission medium, its viscosity at 20 ℃ (20-25) mm2 / s, far less than the general domestic pressure gauge with transfer pressure of the media, castor oil viscosity (900-1100) mm2 / s, and thus the sensitivity is greatly improved measurement range widened, made pressure system, precision machining, lightweight, reliable sealing force; base aluminum alloy, light weight, sturdy, beautiful, the catheter material 1Cr18Ni9Ti stainless steel pipes, rust-proof, beautiful and reliable. 
 ?? [Operating mode】 
 ?? 1, the 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. 
 ?? Advantages analysis: 
 ?? (1) at all times to monitor the Dingxi smart meter flow information. 
 ?? (2) time interval is short, data-intensive, and ultimately the formation of graphics software is more standard, the analysis of the results more accurate. 
 ?? Shortcomings analysis: 
 ?? (1) site conditions, demanding to 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 equipment in the low-power standby mode. 
 ?? Advantages analysis: 
 ?? (1) can overcome the usual work site mains. 
 ?? (2) the service life of up to more than two years, lithium batteries can be replaced. 
 ?? (3) communication costs greatly reduced, the minimum is $ 5 per month. 
 ?? To sum up: consider Dingxi smart meter company site the actual situation in the absence of electricity, it is recommended that the use of lithium battery power supply, both able to overcome poor site environment, the battery life of 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 terminals, 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, storage for two months of historical data, greatly improving the data storage density; 
 ?? (3) its comprehensive feature set by mobile phone can debug, convenient on-site commissioning; 
 ?? (4) Portable, small size, installation and maintenance easier 
 ?? (5) equipment fill the copy function, to ensure data integrity. 
 ?? (6) The device has security features, and Dingxi smart meter connected to a 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 smart meter and above 
 ?? (8) transmission distance up to infinity and the signal stability 
 ?? 
 ?? 【Use】 
 ??, The manometer should be placed on a sturdy vibration free platform, the pressure gauge on the level bubble should be in a central location. 
 ?? 2, using the ambient temperature (20 ± 2) ° C, and its volatility is not greater than ± 0.5 ℃ environment. 
 ?? 3, the pressure transmission medium 30MPa pressure gauge, to kerosene and transformer oil mixture, 20 ℃ 
 ?? Viscosity (9-12) m m2 / s, and greater than 30MPa pressure gauge should be used sebacate (2 - ethylhexyl-yl) ester, 20 ℃, the viscosity (20-25) m m2 / s, acid value not greater than 0.05KOH mg / g, should always be kept clean and changed regularly. 
 ?? 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, in order to avoid piston break. 
 ??, Rotating piston, his hands to force uniform, so as not to break the piston rod. 
 ?? Pressure more than 60MPa, should turn the piston, and then began to pressure. 
 ??, The 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 measured instrument piston manometer, with starting balance from time to amend the measurement). 
 ?? Be the relevant provisions of the periodic review. 
 ?? [Steps] 
 ?? A loaded piston system 
 ?? A spin out of the manometer piston limit screws. 
 ?? 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 and the piston cylinder seat completely out of, then can be special tools, lifting, go under the compression nut. 
 ?? 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 block head. 
 ?? C, observe the piston cylinder seat the O-ring bit is centered, if not the center, should be placed in the center position. 
 ?? D, wash with clean air gas oil the piston and the piston cylinder. 
 ?? E, with a special tool to clamp the piston cylinder (Note: Number one end up), gently vertically into the piston cylinder Block, and then compression nut mounted on the tool, vertical into the piston cylinder Block the tool clockwise to 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. To the Dingxi smart meter ┢ the smart meter direct ℉ Suzhou, ┦ Suzhou Dingxi the smart meter the Dingxi smart meter mechanical Dingxi smart meter ℅ Suzhou RF card set west 
 ?? F Close the left side of the relief valve, open the right contained a stop valve and the left rear piston valve. 
 ?? G of clean pressure transmission medium into the oil cup. (Factory oil cup with medium) 
 ?? H side with pre-pump pressure slowly while observing whether the piston-cylinder pressure transmission medium to overflow, overflow and free of air bubbles when the pressure transmission medium, the 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 pressure relief valve, tighten the limit screws, hung 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, the formula weight quality value of each measurement point should be added. 
 ?? C under pressure gauge in the environment for the full pre-heating, usually 1-2 hours. 
 ?? D, open the relief valve, globe valve, pre-pump drain 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, fittings, pre-pump pressure relief valve with the discharge cavity air, then the pressure gauge connected to the measuring instrument and open the table pole cut-off valve. 
 ?? G, pre-pump pressure 
 ?? With the pre-pump pressure, when the handle after the 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 put added pressure on 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 reading after the first point, 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 of knowledge] 
 ?? 1, keep manometer clean, pressure gauges are not placed in the humidity is too large, to prevent rust. 
 ??, Quick connector and the bottom of the cylinder O-rings are more prone to damage, if the leak should be replaced. 
 ?? Oil cup liquid should always be higher than the oil cup filter cover on the 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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