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Sensor transmitters are measurement or signal conditioning packages that provide standard, calibrated outputs from sensors or transducers. Outputs types include current loops, variable voltage levels, frequency or pulse signals, timers or counters, relays, and variable resistance outputs. Sensor transmitters can also provide radio frequency (RF) signals and transistor-transistor logic (TTL) outputs. Current loops such as 4 – 20 mA are suitable for sending signals over long distances. Typically, a current is imposed on the output circuit proportional to the measurement. Feedback is used to provide the appropriate current regardless of line noise and impedance. Variable voltage outputs are simple, usually linear functions of the measurement. Frequency or modulated frequency outputs for sensor transmitters include amplitude modulation (AM), frequency modulation (FM), sine waves, and pulse trains. 

Sensor transmitters can receive three types of inputs: signal inputs, sensor inputs, and inputs from special devices. Signal inputs include DC voltage, DC current, AC voltage, and AC current. They also include frequency and charge, signals that often require filtering and amplification. Sensor transmitters receive sensor inputs from accelerometers, thermocouples, thermistors, and resistance temperature detectors (RTD). They also receive inputs from strain gauges, many of which use a Wheatstone bridge, and from both linear and rotary variable differential transformers (LVDT and RVDT). Inputs from special devices include signals from encoders and signal per cycle counts from counters and tachometers. Timers, clocks, relays, and switches can also provided special inputs to sensor transmitters.


Products & Services Related to Sensor Transmitters
Analog-to-Digital Converters
Analog-to-digital converters (ADC) sample an analog signal and convert it to a series of digital values to represent the signal to a computer processor.
Bridge Conditioners
Bridge conditioners are instruments that provide excitation and support for strain gages, Wheatstone bridges, load cells, and sensors. They also include circuitry for signal conditioning, amplification, and processing.
Data Acquisition
Data acquisition is the digitizing and processing of multiple sensor or signal inputs for the purpose of monitoring, analyzing and/or controlling systems and processes. Signal conditioning includes the amplification, filtering, converting, and other processes required to make sensor output suitable for rereading by computer boards.
Frequency-to-Voltage Converters
Frequency-to-voltage converters accept a signal and convert its frequency to a corresponding analog voltage level.
Signal Filters
Signal filters block or decrease (attenuate) unwanted frequencies or signal wave characteristics.
Temperature Signal Conditioners
Temperature signal conditioners accept outputs from temperature measurement devices such as resistance temperature detectors (RTDs), thermocouples, and thermistors. They then filter, amplify, and/or convert these outputs to digital signals, or to levels suitable for digitization.
Voltage-to-Frequency Converters
Voltage-to-frequency converters accept a voltage signal and convert its analog level to a signal with a corresponding frequency.

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Engineering Web: Sensor Transmitters
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eFunda Directory Service: Signal Conditioning and Data Acquisition > Sensor ...
Signal Conditioning and Data Acquisition > Sensor Transmitters.  . Sorry, currently there is no company with products in this category.. About Us  Privacy  Disclaimer  Contact  Advertise.  . ...
Infrared Temperature Sensor/Transmitters
OMEGA�s new OS100E Series miniature infrared transmitters measure a temperature range of -18 to 538�C (0 to 1000�F). They consist of a remotely mounted infrared sensor head connected to a high-performance ...
See OMEGA Engineering, Inc. Information
ISA | Application of Dual Sensor Transmitters in Challenging Process ...
... a new sensor approach, and future trends in the use of transmitters in difficult process applications. A new dual sensor transmitter has been developed which can be used as a replacement for these ...
See ISA Information
PRYDE Measurement - Linear displacement sensor-transmitters
... sensor-transmitters.  . PRYDE Measurement has released the Selet linear output photoelectric sensor-transmitter. The displacement sensor operates at distances of up to 1600mm..  . Linear output sensor-transmitter. ...
Salco long-range wireless sensor transmitters
... SENSOR TRANSMITTERS.  . NO WIRES! .....  EVEN FOR POWER!. 0S-600WLR The Salco OS-600WLR is an o. utdoor photoelectric beam security system. . The system is solar powered. and a. "turnkey" system ...
See Salco Industries, Inc. Information

Part Numbers for Sensor Transmitters

Part # Distributor Manufacturer Product Category Description
S-Series   RKI Instruments, Inc. Flame Detectors Patented water repellent sensor coating, competitively priced
150T-CAC-I-20-C   Acromag, Inc. Sensor Transmitters Isolated sensor transmitter, loop powered excellent accuracy and stability
XTR112UA Digi-Key Corporation Texas Instruments Incorporated Sensor Transmitters Surface (SMD, SMT), 14-SOIC, Transmitter, Tube
XTR115U Digi-Key Corporation Texas Instruments Incorporated Sensor Transmitters Surface (SMD, SMT), 8-SOIC, Transmitter, Tube
450T-P-V0-DIN-NCR   Acromag, Inc. Sensor Transmitters AC powered 4-wire isolated transmitter, excellent accuracy and stability

More >>
See more product announcements for Sensor Transmitters
Electro-Sentry™ Hazard Monitoring System

Electro-Sentry™ Hazard Monitoring System
Electro-Sensors, Inc.


2-Wire Temperature & mV Input Transmitter

2-Wire Temperature & mV Input Transmitter
Eurotherm/Action Instruments


Magnetic sensors & signal conditioners.

Magnetic sensors & signal conditioners.
SPECTEC


11 See more product announcements for Sensor Transmitters

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