Features of DF6101 magnetic rotation speed sensor
● Heat resistance, vibration resistance, impact resistance, can be used in harsh environment such as moisture, oil and corrosive.
● No movable part, is non-contact sensor, long service life
● No power supply, simple installation, easy adjustment
● Widely available, high reliability, good price
DF6101 rotational speed sensor consists of magnet steel, soft magnetic armature and coil. The magnetic field (magnetic line) is emitted by magnet steel and returns to the other end of the magnet through armature and coil. When a ferromagnetic tooth passes through the sensor, the reluctance of the magnetic circuit will change once, and an alternating voltage signal will be induced inside the coil. Involute gear induces sine wave.
According to the electromagnetic induction principle, the amplitude of the AC voltage signal generated by the sensor is directly proportional to the speed of the tooth passing. The more gear teeth, the faster the speed, the greater the amplitude of the signal, so the signal amplitude at low speed is very small. However when the speed is very high, the effect of weakening magnetic field of the coil is also enhanced, resulting signal amplitude being weakened. Therefore magnetoelectric sensor is usually used to measure the speed signal of frequency 20Hz-10kHz.
Technical Specification of DF6101 magnetic rotation speed sensor
| DC Resistance | 500Ω - 700Ω | Output Wave | Sine Wave (Involute Gear) |
| Insulation Resistance | >50mΩ at 500V DC | Input Frequency | 20 ~ 10000hz |
| Output Amplitude | >100mv (P-P) at 20r/min & 1mm gap | Gear Requirement | High Magnetic Conductive Steel |
| Working Temp. | Normal Temp.: -40~100℃ | Modules: ≥2 | |
| High Temp.: -20~250℃ | Involute or Equal Tooth |
Considerations of DF6101 magnetic rotation speed sensor
a)The cable shield of the sensor’s output wire must be reliably grounded.
b)The normal temperature type is not allowed to be used in strong magnetic field above 100℃.
c)The high temperature type is not allowed to be used in strong magnetic field above 250℃.
d)Avoid strong impacting during installation and transportation.
Manufacturer does not accept any liability for damages or measurement errors due to non-compliance with above instruction.
DF6101 Product Show
