Chongqing Hengtairail Equipment Co.,Ltd.
Global Rolling Stock Parts Supplier
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Locomotive Spare Parts 4 Channels Speed Sensor
Product overview
The train speed sensor makes full use of the modulation principle of the magnetic field, and it is only suitable for ferromagnetic measuring wheels with a modulus of 3.5. Based on the diameter and teeth of the measuring wheel, we can roughly determine that the speed sensor has a resolution ranging from 60 pulses to 300 pulses, and they can meet the needs of these motors. This type of speed sensor usually has 2 Hall sensors installed. Permanent magnet and signal processing circuit. And every time the speed sensor scans the rotating gear, the magnetic field of the permanent magnet changes accordingly. Usually, the change of the magnetic field is recorded by the Hall sensor, which is converted into a square wave in the circuit comparison part, and thus is gradually amplified in the driving part.
Product specification
| Number of channel | 4 |
| Cable length | 1200mm |
| Working voltage | DC 12~30V |
| Power current (each channel pulse) | ＜50 mA |
| Output pulse amplitude | high level ≥9V (load resistance 3kΩ), low level ≤2V |
| Pulse duty factor | 50%±20% |
| Current drain | 40Ma (each channel/not including load) |
| Short-circuit protection | Yes |
| Pulse skewing | 90°±45° (4 channels) |
| Pulse number of each channel per revolution | 200 |
| Speed range | 0~2500 r/min |
| Output wave type | square wave |
Specific products include:
· Wheel set: axle, wheel
· Bearing & axle box
· Spring & vibration control system: steel spring, rubber spring, air spring, leveling valve, shock absorber and other truck components
· Coupler & draft gear device
· Braking system that meet UIC & AAR requirements
· Passenger train facilities & equipment: window, handrail, luggage rack, seat, HVAC system, toilet, gangway, plug door, interior products
· Locomotive parts
Product Application