Temperature transmitters are devices used to measure temperature and convert the temperature reading into an electrical signal for transmission to a control system. They are widely used in various industries, including HVAC, oil and gas, chemical processing, food and beverage, and power generation, to monitor and control temperature.
Types of Temperature Sensors:
- Thermocouples: Consist of two different metals joined at one end, producing a voltage proportional to temperature. They are robust and suitable for a wide temperature range.
- RTDs (Resistance Temperature Detectors): Use the principle that the electrical resistance of a metal changes with temperature. They provide high accuracy and stability.
- Thermistors: Made of ceramic or polymer materials that change resistance with temperature. They are highly sensitive and suitable for precise temperature measurements over a limited range.
- Infrared Sensors: Measure temperature based on the infrared radiation emitted by an object, suitable for non-contact temperature measurement.
Selection Criteria:
- Temperature Range: The operational range of the transmitter should match the expected temperature variations.
- Accuracy: The precision required for the application.
- Response Time: How quickly the transmitter responds to temperature changes.
- Environmental Conditions: Consideration of operating environment, including temperature, humidity, and exposure to corrosive substances.
- Installation Requirements: The physical constraints and mounting options for the transmitter.
- Output Signal: Type of electrical signal output needed for the control system.
Contact EML for Temperature Transmitters.
