Timely Water & Electricity Material Co., Ltd.

VOLUMETRIC ROTARY PISTON COLD WATER METER MODEL: LXH-15、20/ LXH-15E、20E   　 　 　 　 　 　 　    LXH-15E、20E                   LXH-15、20 INTRODUCTION ＃Model LXH-15、20 is the world¨s favourite domestic water meter, with over 50 million already in service in over 100 countries, and offers accuracy, long life, low maintenance and tamperproof operation. Available in sizes 15mm and 20mm, it offer unrivaled performance to ISO4064 Class C or D. ＃Unrivaled accuracy in any position, for any flow Due to the volumetric rotary piston measurement principle, its range can achieve the highest levels of reading accuracy even at the lowest flow rate. The meter can be installed in any position: horizontally, vertically or inclined pipelines, maintaining optimum performance with no loss of accuracy. ＃Robust, leak-proof construction 1. The use of advanced engineering plastics for the meter¨s measuring chamber significantly reduces wear and helps maintain reliable, accurate measurement over all operating conditions. Solid particles are gathered by a large surface area strainer, Further preventing damage, and its advanced design ensures that partial obstruction of the strainer will have no ill effect on the accuracy of the meter¨s registration. 2. A body ｀O¨ ring seal between the measuring chamber and meter body ensures that internal leaks which could by-pass the measuring chamber are eliminated. ＃Easy to read The counter is fully sealed, liquid filled using a vacuum and offers simple, straight-reading presentation. The number rollers are completely immersed in a lubricating non-toxic liquid, and a sac attached to the counter casing. Acts as a balancing membrane, ensuring the pressure of the liquid in the counter equals that of the external water. The counter window is inside the meter body in the direction of flow for simplified reading. ＃Tamperproof operation 1.The model LXH-15,20 offers unrivaled resistance to illegal tampering: its unique conical body-half design eliminates the risk of disassembly whilst in service and the mechanically driven cyclometer-type counter is resistant to magnetic interference. 2.An optional return reverse flow restrictor provides further protection against outside interference, preventing the meter being operated in the reverse direction to reduce the reading. This restrictor cannot be removed without opening the meter and destroying the seal. ＃Revolutionary grooved piston Meter stoppages are substantially reduced, durability enhanced and performance improved as a result of a uniquely-designed grooved piston within the meter measuring chamber, increasing applications flexibility (available in 15mm and 20mm sizes). ＃Relative motion of the grooved piston. Its action, with the stationary chamber wall, creates small flow eddies which hold solids in suspension until flushed out, reducing meter stoppages.  APPLICATION ＃Measuring the volume of cold potable water passing through the pipeline. FEATURES: ＃ The world¨s biggest-selling domestic water meter; ＃ Optimum accuracy and performance at all times, in any position; ＃ Revolutionary grooved piston for improved, durability and performance; ＃ Durable tamperproof construction; ＃ Pulse output available providing access to management information; ＃ Volumetric meter, on principle of piston rotation, accurate measurement, easy and long term clear reading, etc. WORKING CONDITION ＃Water temperature: ＋40≧ ＃Water pressure: ＋1MPa or 1.6MPa optional (10bar or 16bar optional) MAXIMUM PERMISSIBLE ERROR ＃In the lower zone from qmin inclusive up to but excluding qt is ＼5% ＃In the upper zone from qt inclusive up to and including qs is ＼2% ACCESSORIES With every meter, there will be one set couplings optional: 2pcs tube, 2pcs nut and 2pcs gasket. NOTE ＃Technical data conform to International Standard ISO4064 MAIN TECHNICAL DATA 　 Type Size (mm) Class qs Max. Flow qp Nominal Flow qt Transitional Flow qmin Min. Flow    Min.     Reading Max.    Reading m3/h L/h m3 LXH-15 15 C 3 1.5 22.5 15 0.0001 9999 LXH-20 20 C 5 2.5 37.5 25 0.0001 9999 LXH-15E 15 C 3 1.5 22.5 15 0.0001 99999 D 17.25 11.25 LXH-20E 20 C 5 2.5 37.5 25 0.0001 99999 D 28.75 18.75  DIMENSIONS AND WEIGHT Type Size Length Width Height Connecting Thread D Weight kg mm LXH-15 15 110/115 85   G3/4B 1.1 LXH-20 20 130 85   G1B 1.3 LXH-15E 15 165 95 115 G1B 1.7 LXH-20E 20 190 100 126 G3/4B 2.0   FLOW ERROR CURVE                                                                   PRESSURE LOSS CURVE PULSE TRANSMITTING WATER METER APPLICATION AND FEATURES ＃Applied for remote automatic reading system. Meter with pulse output: Available 1L, 10L, 100L or 1000L per pulse for choice. ＃Water meter equipped with a Reed Switch Pulser which can be connected to remote reading systems. The Reed Switch Pulse sends out electric signals per a preset water quantity. ＃Comes in several model variation, which indicate different pulse rates. To choose the variation best suited to your needs as per optional data in below diagram. REED-SWITCH ELECTRIC DATA Switch voltage: 24VAC/ DC Switch current: 0.01A max OUTPUT DATA:                                                                                       Size Pulse output 1L/Pulse 10L/Pulse 100L/Pulse 1000L/Pulse 15mm 〔 〔 〔 〔 20mm 〔 〔 〔 〔 　   LXH-15-20                                      LXH-15E-20E

　

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