Help with Linear Position Sensors specifications:
Sensor Technology
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Technology | |||
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String Potentiometer | Cable extension linear position sensors are used to measure the movement and displacement of objects. A cable or wire is attached to an object, and as the object moves, the transducer produces an electrical signal proportional to the wire's linear extension. | ||
Capacitive Linear Position Sensor | Capacitive linear position sensors are noncontact devices that sense position/displacement by measuring the voltage difference between the sensor and its target. | ||
Eddy Current Linear Encoder | Eddy current linear position sensors detect the distance from a target by using magnetic fields generated by a reference coil and sensing coils. | ||
Optical Linear Encoder | Fiber optic linear position sensors use fiber optic technology to sense position and displacement. | ||
Hall Effect Position Sensor | Hall effect position sensors are noncontact devices that convert energy from a magnetic field into an electrical signal. They use the Hall effect, a voltage caused by current flow in the presence of a magnetic field. | ||
Inductive Linear Position Sensor/Switch | Inductive linear position sensors and switches are noncontact devices that determine an object's coordinates (linear or angular) with respect to a reference. | ||
Linear Encoder | Linear encoders sense and digitize linear position change for positional measurement and feedback to control systems. | ||
Linear Potentiometer | Linear potentiometers are sensors that produce a resistance output proportional to the displacement or position. | ||
LVDT Linear Position Sensor | Linear variable differential transformer (LVDT) position sensors have a series of inductors in a hollow cylindrical shaft and a solid cylindrical core. These devices produce an electrical output proportional to the position of the core. | ||
Magnetoresistive Linear Position Sensor/Switch | Magnetoresistive linear position sensors and switches have a linear resistance output signal representing an object's distance from a reference point. | ||
Optical Triangulation Position Sensor | Optical triangulation position sensors use reflected waves to pinpoint position and displacement. The source of these waves may be a light-emitting diode (LED), infrared (IR) light, or laser. | ||
Time of Flight Optical Position Sensor | Time of flight optical sensors determine displacement and distance by measuring the time it takes light to travel from the instrument to a target and back. | ||
Ultrasonic Linear Position Sensor/Switch | Ultrasonic linear position sensors and switches use ultrasonic waves in combination with light and frequency readings for position and displacement sensing. | ||
Variable Reluctance Linear Position Sensor/Switch | Variable reluctance linear position sensors and switches are noncontact devices that use variable reluctance-based technology. The output signal represents the distance between an object and a reference point. | ||
Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Specifications
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Measurement Range | Range of distance measurement, or maximum distance measured. | ||
Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Accuracy | Accuracy describes the percent deviation from the actual/real value of the measurement. | ||
Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Linearity | Linearity is the maximum deviation from direct proportionality between the distance measured and the output distance over the measuring range. | ||
Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Operating Temperature | The temperature range over which the device must operate. | ||
Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Electrical
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Output | |||
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Voltage | Output voltage is a simple (usually linear) function of the measurement. | ||
Current | Often called a transmitter. A current is imposed on the output circuit proportional to the measurement. Feedback is used to provide the appropriate current regardless of line noise, impedance, etc. Useful when sending signals over long distances. | ||
Frequency | The output signal is encoded via amplitude modulation (AM), frequency modulation (FM), or some other modulation scheme, but the signal is still analog in nature. | ||
Resistance | An output consisting of a simple change in resistance, typically for a magnetoresistive device. | ||
Switched / Alarm | An "output" of a change in state of switches or alarms. | ||
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Interface | |||
Your choices are... | |||
Serial | A standard digital output protocol (serial) such as RS232, etc. | ||
Parallel | A standard digital output protocol (parallel) such as IEEE488, etc. | ||
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Body Shape
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Body | |||
Your choices are... | |||
Cylindrical | A potentiometer body is shaped like a cylinder/barrel. | ||
Rectangular | A potentiometer body is square or rectangular. | ||
Ring | A round or "doughnut"-shaped sensor, in which an object passes through center of ring. | ||
Slot | Designed to detect the presence of a vane or tab as it passes through a sensing slot, or "U" channel. | ||
Other | The body shape is other/specialty. | ||
Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Threaded Barrel | |||
Your choices are... | |||
Threaded Barrel | Body exterior is threaded; often comes with mating nuts for panel mounting. | ||
Search Logic: | Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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