1、 Overview:
The XJP-75 intelligent speedometer adopts an adaptive synchronous frequency and cycle measurement method, which can detect various speeds from 0.50Hz to 10kHz. It has two relay outputs and a 4-20mA standard signal output. It is a new generation speed measurement instrument with a single-chip microprocessor as the main chip. This speed measuring instrument can be paired with various speed sensors to measure speed, linear velocity, flow rate, and angular velocity. It is widely used in industries such as chemical, metallurgical, energy, light industry, textile, electronics, machinery, and automotive.
The full range of 4-20mA analog output of this intelligent speedometer can be set through panel keys, making the instrument a truly intelligent digital tachometer. This tachometer can be matched with corresponding photoelectric speed sensors, magneto electric speed sensors, magnetic sensitive speed sensors, and Hall speed sensors for ultra-low speed, medium high speed, high speed, ultra high speed, and full speed measurement control.

2、 Main technical performance:
1. Power supply: AC 220V, 50Hz
2. Input signal frequency: 0.050Hz~10KHz
3. Input signal amplitude: rectangular wave 0.5V~12V
4. Speed measurement range: 0-30000 revolutions per minute
5. Display range: 0.0001 to 99999. (The decimal point can be set arbitrarily)
6. Measurement accuracy: ± 0.03% (digital display) ± 0.5% (4-20mA)
7. Setting range: coefficient 0.0001 to 99999 Full range 0 to 300000 revolutions per minute (can be set arbitrarily)
8. Sampling time: 0.1-15 seconds
9. Operating environment: Temperature 0-40 ℃, relative humidity ≤ 85%
10. Hole size: 150 × 75
11. Dimensions: 160 × 80 × 130
12. Weight: less than 1.0kg. 3. Wiring method:

Wiring diagram of XJP-75 digital display instrument and XJP-75 intelligent speedometer

+12V and 0V provide DC power to the sensor; The sensor signal is connected to f;
J1 and J2 are the normally open contact output terminals of relay 1 and relay 2, respectively;  
For specific connection methods, please refer to the sensor manual.