Sensors, Transducers4,462 Results
- Color Sensors
- Encoders - Industrial
- Humidity, Moisture Sensors
- IrDA Transceiver Modules
- Optical Sensors - Ambient Light, IR, UV Sensors
- Optical Sensors - Photo Detectors - Remote Receiver
- Optical Sensors - Photodiodes
- Optical Sensors - Photointerrupters - Slot Type - Transistor Output
- Optical Sensors - Phototransistors
- Optical Sensors - Reflective - Analog Output
- Position Sensors - Angle, Linear Position Measuring
- Specialized Sensors
- Temperature Sensors - NTC Thermistors
- Temperature Sensors - PTC Thermistors
- Temperature Sensors - RTD (Resistance Temperature Detector)
Color sensors use multiple photodiodes in a single package to detect the intensity and frequency of ambient light. Onboard ASICs (Application Specific Circuits) convert the information to analog or digital output signals. The photodiodes are designed to detect specific colors such as RGB (red, green and blue), CMYK (cyan, magenta, yellow and black), and white as well as infrared light.
Encoders are devices that are designed to translate motion or position changes into electrical signals. By tracking the motion either optically, mechanically or by changing magnetic fields, encoders can output electrical signals either in code such as by binary, octal, hexadecimal or grey code or by changing output signals such as frequency or differential voltage. With a range of supply voltages, mounting types, output resolution per revolution and actuators, encoders can fill a range of applications.
Humidity, Moisture Sensors
Moisture Sensors are designed to detect and respond to the presence or a change in the amount of humidity along with Pressure, Temperature, and Light. The output types are Analog Voltage, Capacitance, Digital, Frequency, I2C, LCD Display, LCD, PDM, PWM, Resistive, SDM, SPI, ZACwire, and ZigBee with accuracy ranging from ±1.5% RH to ±7% RH.
IrDA Transceiver Modules
Infrared transceivers incorporate an infrared emitter, a photodiode and control circuitry in a single device package for use in data transmission at rates as high as 16 megabits per second. Modules are available as Serial (SIR), Mid (MIR) and Far (FIR) variations with side or top view options. The Infrared Data Association (IrDa) provides protocol specifications for wireless data communication such as IrDA 1.x and IrPHY 1.x for use with infrared transceivers.
Optical Sensors - Ambient Light, IR, UV Sensors
Ambient light, IR and Ultraviolet optical sensors convert their respective light and/or heat inputs into an analog or digital output and are available in a wide variety of surface mount and through hole package types. The wavelength for these sensors range from 290nm to 4000K.
Optical Sensors - Photo Detectors - Remote Receiver
Products in the remote receiver photodetector family integrate a light sensitive element such as a photodiode with filtering and amplification functions, and are used as receivers for information transmitted via modulated infrared light. Most commonly found in devices such as televisions and other consumer products that are manipulated through the use of handheld remote controls, available devices vary in the extent of the filtering and signal processing they provide, resulting in various degrees of sensitivity and immunity to interfering ambient light.
Optical Sensors - Photodiodes
Products in the photodiode family are used for detection and measurement of light. Based on the interaction of light with a semiconductor junction similar to that found in rectifier diodes, devices adapted for a wide range of purposes are available. Some are adapted for sensitivity over narrow wavelength ranges, others for sensitivity over a wide range. Some are suitable for detection of high-speed signals such as encountered in fiber optic communications, others for detection of extremely low levels of light (even individual photons) with applications ranging from medical imaging to distance measurement.
Optical Sensors - Photointerrupters - Slot Type - Transistor Output
Slot type photointerrupters with transistor output are optical sensor modules that utilize a built-in infrared light source and a photodiode separated by an air gap (slot). When an actuator, liquid or other detection object blocks the light source, an output transistor is turned on or off which toggles the applied voltage. Mounting options include chassis, snap-in, surface, free-hanging, and through-hole.
Optical Sensors - Phototransistors
Products in the phototransistor family are discrete light sensitive components which behave in similar fashion to a bipolar transistor, but use incident light instead of an electrical current applied through a device terminal to cause the device to conduct. Compared to photodiodes, phototransistors generally produce a much larger output current for the same intensity of incident light, though are slower to respond to changes in light intensity. These differences result in phototransistors being simpler to apply, but less useful for high speed operation.
Optical Sensors - Reflective - Analog Output
Products in the analog output reflective optical sensor family incorporate an optical emitter and light sensitive element (typically a phototransistor) mounted adjacent to each other and facing the same direction, such that light from the emitter that is reflected by an object in the sensor's field of view can be detected by the sensing element within the device. Analog output sensors of this type deliver the signal produced by the photosensor directly with minimal processing, requiring the user to provide their own interpretive mechanism to determine object detection.
Position Sensors - Angle, Linear Position Measuring
Angle and linear position measuring sensors use capacitive, Hall effect, inductive, LVDT, LVIT, magnetoresistive, optical or resistive technology to determine the position of the sensor's actuator relative to a reference point. Angle position sensors are differentiated by their electrical or mechanical range in either a limited or continuous rotation range. Linear position sensors are differentiated by ranges from 0 up to 400 inches. Other considerations include actuator type, output type and signal, mounting type and percent linearity.
Specialized Sensors are devices designed for specific requirements or for niche applications. The sensor types are accelerometer, gyroscope, magnetometer, pressure, temperature, humidity, light, air quality monitor, analog-to-frequency converter, anemometer, battery sensor, biometric, bubble detector, button press, camshaft, capacitive, contact sensor, depth gauge, dry contact sensor, fingerprint, force sensing, gas, geiger tube, infrared, joystick, and laser power, among others.
Temperature Sensors - NTC Thermistors
NTC Thermistors, or Negative Temperature Coefficient Thermistors, are devices that change resistance in response to changes in temperature. With negative coefficient parts, their resistance decreases as their temperature increases. They are typically defined with variables such as the parts base resistance value at a set temperature, usually 25°C, and B values, the performance curve of temperature vs. resistance calibrated between two fixed points.
Temperature Sensors - PTC Thermistors
Positive Temperature Coefficient (PTC) thermistor temperature sensors are devices that exhibit an increase in resistance in response to an increase in temperature. Thermistors produce an output signal that is relatively large and easy to measure compared to many other temperature sensor types, though their characteristics tend to be less stable and less suitable for precise temperature measurements. PTC thermistors in particular are often adapted for over-temperature detection applications, and often exhibit a distinctly nonlinear temperature-resistance relationship that makes them useful for detection of an imprecise "high" temperature condition, though poor for making accurate measurements.
Temperature Sensors - RTD (Resistance Temperature Detector)
RTD (resistance temperature detector) temperature sensors are devices that change their resistance relative to changes in temperature. The specific metals used in RTD devices show a known change in resistance as the temperature fluctuates. These are available in a range of resistance values from 10 to 1.85K ohms and each has a range of resistance tolerances to consider. They can be free-hanging, panel mount, chassis mount, surface mount, or through-hole.