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digital speedometer tachometer kit
Nanjing Hemu International Trade Co.,LTD is committed to the pursuit of professional automotive safety electronics,especially of automotive gauge . Our company has different types of auto gauges, such as digital speedometer tachometer kit, it can see the speed clearly. If you are interested in it , welcome to contact us. Besides good quality , you'll also find plenty of discounts when you order for digital speedometer tachometer during big sales.
We have 3-3/8" 85mm Digital six-in-one multi-function GPS Speedometer and Tachometer Gauge. The accumulated mileage of speedometer is adjustable which range is from 0 to 9999999km / mile / NMI. Also the accumulated hours of the tachometer is adjustable which range is from 0 to 99999.9H. The tachometer is the speed of the engine crankshaft; The speedometer is the speed of the car. The unit of tachometer is rpm; The unit of speedometer is km per hour. The speed range of the tachometer is 0 to 8000 rpm; The speed range of the speedometer is 0 to 300km per hour. Automobile tachometer is one of the necessary instruments in machinery industry, which is used to measure the speed, linear speed or frequency of motor. The tachometer directly reads the received digital pulse signal into the counting port of the CPU after processing, calculates the speed and the corresponding position of the pointer through the software, and then amplifies it through the control port of the CPU to drive the positive and negative directions of the stepping motor.
There are two units of driving speed, one is "km / h" and the other is "mph". Generally, Japanese and Korean car lines and most car lines in Europe use "km / h" to express the speed, and the North American market usually uses "Mile / h" to express the speed. As for domestic models, including most imported models, the speed is expressed by "km / h". In the unskilled period, you should look at the tachometer and change gears at about 2000 rpm. The specific shift timing depends on the situation. The relationship between the speedometer and the tachometer is purely linear. For example, when the engine speed of the same car is 2000 rpm, the speed should be 15 km / h in gear 1, 30 km / h in gear 2, 45 km / h in gear 3, 60 km / h in gear 4 and 75 km / h in gear 5, However, the specific speed varies from model to model. In the final analysis, it is determined by the transmission ratio of the transmission system. At the same speed, it is not good if the speed is too high or too low. It should be kept at about 2000 ~ 3000RPM. You can choose which you want.Our digital speedpmeter tachometer kid is LED kit, can perfectly replace the original odometer of your vehicle.
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