| Type: | Microwave Sensor Switch |
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| Principle: | Eddy Current |
| Wires: | PNP (Three-Wires) |
| Standard: | Standard |
| Application: | Basement |
| Size: | 118 Type |
| Samples: |
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| Customization: |
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Audited Supplier KJT‘’ss Thrumold Series VRS (Variable Reluctance Speed) sensors are designed to detect engine timing and transmission speed by determining the speed and position of rotating shafts in heavy-duty, off-road, and construction vehicles, providing information to help improve engine combustion process efficiency. These passive VRS sensors are simple, rugged devices that do not require an external voltage source for operation. A permanent magnet in the sensor establishes a fixed magnetic field. The approach and passing of a ferrous metal target near the sensor's pole piece (sensing area) changes the flux of the magnetic field, dynamically changing its strength. This change in magnetic field strength induces a current into a coil winding which is attached to the output terminals. The output signal of a VRS sensor is an ac voltage that varies in amplitude and frequency as the speed of the monitored device changes, and is usually expressed in peak to peak voltage (Vp-p). One complete cycle occurs as each tooth passes the sensor's pole piece. If a standard gear were used as a target, this output signal would resemble a sine wave if viewed on an oscilloscope.
FEATURES • Configurable diameters, materials, and output voltages: A variety of package styles, housing diameters, materials and and output voltages • Compensated operating temperature range: -40 °C to 150 °C [-40 °F to 302 °F] • Energy efficient: When used in engine camshaft and crankshaft applications, can provide a precise engine timing signal to optimize the combustion process • No moving parts or wear mechanisms (unlike mechanical switches) • Self-powered operation: Can be used in applications where no external power is available • Direct conversion of actuator speed to output frequency: Simplifies the customer's electronic control interface because each output signal correlates to each tooth on the actuator • Simple installation: Screw-in mount sensor requires no special tools • Designed for use over a wide range of speeds: Allows for potential use in engines and transmissions which often require a wide range of rotational speed measurement • Durable: 300 Series stainless steel housing material allows for use in harsh environments • Environmentally tough: - Chemical compatibility: Engine oil, diesel fuel, water, engine coolant, salt spray and trisodium phosphate cleaning solution (oils containing extreme pressure additives are not suitable for use with this sensor) - Front end sealed to 5 psi • Sensor reach options: Sensor reach is the distance from a sensor's mounting surface to its sensing tip: - Adjustable: The sensor, with its threaded housing, is screwed into the application until it makes contact with the target, and then is backed off one-half to one turn; a userprovided jam nut is then used to fix the sensor in place - Fixed (also called non-adjustable): The sensor is screwed into the application until the sensor's mounting surface makes contact with the application's mounting surface POTENTIAL TRANSPORTATION APPLICATIONS • Engine timing for heavy duty, off-road, construction vehicles (i.e., tractors and dump trucks) • Transmission speed for heavy duty, off-road, construction vehicles (i.e., tractors and dump trucks)
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