Applications
Differential sensing + differential transmission (line driver signals) solves noise problems at measurement sites!
- Inverters, which are widely used in motor control as an energy-saving measure, are a source of noise, making noise countermeasures in measurement scenarios a challenge.
- Many encoders with line driver signal output are used for rotational speed and angle measurement, but they cannot be used for EVs or motors with high rotation speed.
- We introduce a gear sensor with line driver output that is less susceptible to noise by employing a differential system in the detection and transmission sections.
| 2 Hall element differential system: Noise-resistant sensing |
Line driver signals resistant to transmission noise |
Line driver input Signal Isolation |
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 Inverter |
→ |  Motor Gear Sensor IMG12-50LD |
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Speedmeter TDP-4921-ND  |
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What you can do with the measurement
Gear tooth sensor- Detection is possible from 0 Hz, allowing detailed measurement of the motion of a rotating object when it starts or stops.
- The sensing section uses a two Hall element differential method, so it is unaffected by surrounding magnetic fields and can perform stable detection with suppressed jitter.
- The line driver output is less susceptible to transmission noise, so it can be used safely even during long-distance transmission.
Rotation speed measurement
- Combined with the TDP-4921-ND series, which supports line driver input and input isolation, measurement with higher noise immunity can be achieved.
Selection Points
- Gear sensing less susceptible to inverter noise.- Line driver output that can be used without worrying about signal attenuation during long-distance transmission
- Gear sensor capable of sensing from low RPM (0Hz)
- Measuring equipment capable of line driver signal input
- Signal isolation from measurement line
| Products | Points | Overviews | |
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IMG12-50LD/ IMG16-50LD Magnetic Gear Speed Sensor Product page |
Line driver output Semi-open collector output Differential (balanced) CMOS logic output Wide power supply range Conical press |
- The 2 Hall element differential method eliminates magnetic field noise at the detection section and provides a stable output with suppressed jitter. - The line driver output LD type also eliminates the effects of transmission noise, so it can be used in long wiring environments. - The sensor detection surface is made of a completely sealed, one-piece metal case and is IP67 rated. - It can be used in environments where water or oil adheres to the sensor. - Measurable frequency range: 0Hz to 20kHz - Operating temperature range: -20°C to 105°C |
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SPD-4801N Speed Meter / Counter [switchable] Product page |
Line driver signal input USB RS-485 Modbus CAN Analog output Alarm output Zero shift Span shift Stop/start Count LINKSHIP compatible |
- Tachometer that can be connected to various sensors. - Supports input isolation and line driver signals. - Input frequency range: 0.0006Hz to 1MHz - Analog output (option) resolution: 16bit - Simultaneous Analog output[0.1 ms] and CAN output[1 ms] |
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TDP-4921-ND-□□ Speed Meter Product page |
Line driver signal input RS-232C RS-485 Analog output Alarm output BCD output LINKSHIP Compatible |
- Tachometer that can be connected to various sensors. - Supports input isolation and line driver signals. - Input frequency range: 0.0006Hz to 4MHz (single-phase signal) / 0.0006Hz to 1MHz (A/B phase signal) - Analog output (option) resolution: 16bit - Output update time: 0.5ms |
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CNT-4921-ND-□□ Pulse integration (reversible) counter Product page |
Line driver signal input RS-232C RS-485 Analog output Alarm output BCD output LINKSHIP Compatible |
- Reversible counter that can be connected to various sensors. - Supports input isolation and line driver signals. - Input frequency: 0 to 4MHz (single-phase signal) / 0 to 1MHz (A/B-phase signal) - Analog output (option) resolution: 16bit - Output update time: 0.5ms |
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CPI series Pulse Isolators Product page |
DIN Rail Mounting High Speed Pulse Isolator BNC Connector Input/Output BNC Connector |
- Pulse isolators capable of inputs up to 300 kHz. - For noise suppression from measurement lines or for signal branching in a panel. - Equipped with filter circuit (low-pass filter) and signal trigger level adjustment function |
Related Measurement Keywords
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