Liquid flow transducer classifies working principle

  • Time:
  • Click:144
  • source:YIGAN CNC Machining
Liquid flow transducer, can divide corrode a liquid to have flow transducer and did not corrode liquid flow transducer, this just distinguishs from medium respect, also be the matter that wants the first attention in applied choosing. Concluded after liquid property, will divide with respect to the demand that according to us oneself handles, metric model liquid flow transducer or it is flow transducer of output of imitate quantity signal, metric kind there is pulse signal commonly nowadays (surpass Cheng Ershui flow transducer) , imitate quantity signal to output more nowadays is output of switch quantity signal (if do reed to provide type current switch) , also can change into electric current and voltage signal, those who imitate a quantity offer to imitate only (switch) quantity, cannot undertake metric, comparatively relatively forthright, not metric model the precision of liquid flow transducer is tall, those who imitate a quantity mobilizing flow also is an item that flow transducer of switch quantity liquid should ponder over. Will divide by precision, have water meter class (cent B class and class A, it is to be in commonly 2% arrive inside the accident of 3% , it is to want those who have metric card) , exceed in 5%-10% report subclass use commonly nowadays measure signal apply when switch, or it is water accuses water to heat etc apply, example report water heater, water machine, coffee machine, water heater burning gas uses discharge sensor (surpass Cheng Ershui flow transducer) . A word sums up: Do it from medium, 2 from apply demand to enter water, 3 do it from precision, can choose the liquid flow transducer that wants to you. Liquid flow transducer measures flow transducer of principle introduction liquid and discharge converter to be able to comprise flowmeter to be used at measuring to close corundum, hard alloy is reached not to rise with stainless steel in conduit corrode action, and the liquid that waits for foreign matter without fiber, grain. Have a structure simple, deft, precision sex of tall, reproduction good, response is sensitive, installation is safeguarded use convenient wait for a characteristic, be used extensively at the industry such as oil, chemical industry, metallurgy, water supply, papermaking, it is flowmeter quantity and energy-saving ideal liquid sensor. The measurement of liquid flow transducer principle: The fluid sheds housing of classics liquid sensor, because the lamina of impeller and flow direction have proper point of view, the brunt of the fluid makes blade has rotational moment of force, after overcoming attrition moment of force and fluid resistance, blade rotates, after pitching moment is balanced rotate speed is stabilized, below certain condition, rotate speed and velocity of flow become direct ratio, because blade has permeability, be in signal detector (comprise by permanent magnet steel and coil) in magnetic field, gyral blade cut lines of force, changing the flux of coil periodicly, make two upright inductions give coil thereby electric pulse signal, this signal passes liquid flow transducer the enlarge plastics of amplifier, form the successive rectangular pulse that has certain range, but far pass to indication appearance, show the instantaneous discharge of the fluid or gross. Inside certain discharge limits, pulse frequency F and the instantaneous discharge Q that circulate the fluid of classics liquid flow transducer become direct ratio, discharge equation is: In type: F -- pulse frequency [K of Hz] 　 　 -- the appearance coefficient of liquid flow transducer [1/m3] , give out by desired result sheet. If with [1/L] is unit 　 Q -- the instantaneous discharge of the fluid (below working status) [M3/h] 　 　 3600 -- reduction coefficient notes: Liquid flow transducer is applied to below working temperature viscosity is less than 5 × the medium of 10-6m2/s, be more than 5 × to viscosity the liquid of 10-6m2/s, reason needs to make be used after fluid demarcate to liquid flow transducer. CNC Milling CNC Machining