where to buy a tachometer

• 2022-01-05

Type of tachometer: Tachometers are generally divided into: Contact tachometer (mechanical tachometer),Non contact tachometer (photoelectric tachometer), Pulse tachometer, Gasoline engine tachometer and diesel engine tachometer.

Tachometer is used in motor, electric fan, papermaking, plastic, chemical fiber, washing machine, automobile, aircraft, ship and other manufacturing industries. It is also called tachometer or tachometer to memorize the maximum, minimum and last measured values. The tachometer has wide measurement range and high precision. The tachometer can directly measure the speed and linear speed of various machinery and equipment. The tachometer can generally be divided into photoelectric tachometer, contact tachometer, photoelectric contact dual-purpose tachometer, etc. the photoelectric measurement range of the tachometer is 50 ~ 600mm. The display mode of tachometer includes LCD display (liquid crystal) and LED display (light emitting diode).

Technical indicators of tachometer:

1. Tachometer measurement accuracy:

Within the full range of speed: 0.1% linear speed: 2%
Photoelectric measurement distance: 5cm ~ 500cm, 10cm ~ 50cm is the best;
Functional unit measurement range
Angular velocity R / S (R / s) 0.2r/s-667r/s
R / min (RPM): 7R / min-40000 R / min
Linear speed cm / S (cm / s) 1cm / s-5700cm / S
M / min (M / min): 0.6m/min-3420m/min
Inch / s 0.4inch/s-2244inch/s
F / min (FT / min) 2F / min-11220f / min
Y / min (yard / min) 0.7y/min-3740y/min
Non contact tachometer test items ● shaft rotating parts: angular speed ● linear moving parts: linear speed

2. Working principle of tachometer

The circuit converts the speed signal of air preheater into pulse signal through photoelectric encoder. After PLC acquisition, operation and processing, after D / a conversion, it outputs two 4-20mA signals to DCS, and then processed by DCs to make corresponding operation.

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Our company Nanjing Hemu Auto Parts has different types of tachometer , include the car , vehicle , boat , marine , and so on , we have size 52mm , 85mm. And we have the needle type and the digital type. Include the single function gauge and the multi-functions gauge.