БЛОК ДАТЧИКА ЧВ Caterpillar 2932879

The High Variable Reluctance Speed Sensor operates through the principle of magnetic flux difference created when ferrous gear teeth pass across the sensing tip. Each passing tooth alters the magnetic field surrounding the internal coil winding, generating an alternating electrical signal proportional to the rotational speed of the monitored shaft. This signal is transmitted through the connected wiring harness to the electronic controller, where it is interpreted to determine speed and positional reference data.Attributes:• Used to interface with an electronic control module input impedance of 20 Kilohm.• Detects target movement at a minimum surface speed of 10 inches per second (0.25 meter per second).• Operates with a coil wire current of 17.6 milliampere root mean square.• Produces an output voltage of 41 ± 9 volts peak-to-peak.• Provides 433 ± 43 millihenry inductance measured at 1 kilohertz in free air.• Measures approximately 1055 ohm at 25 degrees Celsius between Pin 2 positive and Pin 1 negative, with a range of 600–1800 ohm across -40 degrees Celsius to 120 degrees Celsius.• Generates a positive voltage at Pin 2 relative to Pin 1 as ferrous metal approaches the sensor tip.• Stored within a temperature range of -55 degrees Celsius to 150 degrees Celsius.• Requires a minimum air gap of 0.5.Applications: The High Variable Reluctance Speed Sensor is installed near a rotating gear or timing wheel within the engine, monitoring shaft rotation and sending speed and timing signals to the electronic control unit for operational coordination.