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EMI, LDA, Edifício Estoril Office, Av. República 3000A, Esc. 19A, 2649-517 Alcabideche PORTUGAL

Transmitters

What is a Transmitter?

A transmitter is a device that converts a physical quantity (such as temperature, pressure, or position) into a standard signal (usually electrical or digital), enabling remote monitoring, control, or data logging.

It is an essential component in automation, instrumentation, and telecommunications systems.

General Operati...

What is a Transmitter?

A transmitter is a device that converts a physical quantity (such as temperature, pressure, or position) into a standard signal (usually electrical or digital), enabling remote monitoring, control, or data logging.

It is an essential component in automation, instrumentation, and telecommunications systems.

General Operation

  1. Primary sensor: detects the physical variable (e.g., thermocouple for temperature).
  2. Transducer: converts the variable into a proportional electrical signal.
  3. Signal conditioning: amplification, filtering, etc.
  4. Final conversion: to a standardized signal (e.g., 4-20 mA, 0-10 V, digital).
  5. Transmission: to a controller, logger, or SCADA system.

Types of Conversion and Associated Transmitters

Physical VariableType of TransmitterExample Application
PositionPotentiometers, EncodersRobotics, motorized valves
SpeedTachometers, EncodersElectric motors, production lines
Acceleration/VibrationAccelerometers, Piezoelectric sensorsMachine condition monitoring
Force / PressureStrain gauges, PiezoelectricHydraulic and pneumatic systems
Voltage / CurrentElectrical transducersPower monitoring
TemperatureThermocouples, RTDs, ThermistorsIndustrial processes, HVAC
DensityDensity transmittersFood and chemical industries
ViscosityTorque-based sensorsOil, paint, food processing
pHpH transmittersWater treatment
FlowUltrasonic, Coriolis, ElectromagneticPipelines, irrigation systems
GasIR sensors, MQ, TGSGas leak detection
HumidityCapacitive, resistiveAgriculture, HVAC
LightLDRs, PhotocellsAutomatic lighting control
RedoxORP transmittersPools, chemical reactions
UniversalConfigurable transmitters (e.g., HART)Industrial automation
VibrationPiezoelectric sensorsMotors, turbines monitoring

Types of Output Signals

  • Analog: 4–20 mA, 0–10 V
  • Digital: Modbus, Profibus, HART, CAN
  • Wireless: Zigbee, LoRa, WirelessHART

Practical Applications

  • Industry: process automation, production monitoring
  • Energy: electrical and environmental parameter monitoring
  • Environment: air and water quality control
  • Transportation: motor monitoring, safety systems
  • Smart buildings: HVAC, lighting and humidity control
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Transmitters There are 3 products.

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Showing 1 - 3 of 3 items