ABB TR04-Ex PT100 Temperature Transmitter

The ABB TR04-Ex Pt100 Temperature Transmitter Assembly is an explosion-proof industrial temperature measurement solution designed for accurate and reliable monitoring of process temperatures in hazardous environments. Combining a Pt100 RTD temperature sensor with an integrated head-mounted transmitter, the TR04-Ex converts temperature measurements into a standard 4–20 mA output signal for transmission to PLC, DCS, and process control systems. It is widely used in oil & gas, chemical processing, power generation, pharmaceutical, and industrial manufacturing applications.

Key Features

• Pt100 RTD temperature measurement
• Explosion-proof / intrinsically safe design
• Integrated temperature transmitter
• 4–20 mA industry-standard output
• High measurement accuracy and stability
• Stainless steel probe construction
• Suitable for hazardous areas
• Excellent vibration and corrosion resistance
• Low maintenance operation
• Compatible with PLC, DCS, and SCADA systems

Specifications

• Manufacturer: ABB
• Model: TR04-Ex
• Sensor Type: Pt100 RTD
• Measurement Principle: Resistance Temperature Detector (RTD)
• Output Signal:
  • 4–20 mA
• Sensor Element:
  • Pt100 Platinum Resistance Thermometer
• Accuracy:
  • IEC 60751 Class A or Class B (configuration dependent)
• Temperature Range:
  • Typically up to -200°C to +600°C depending on sensor configuration
• Process Connection:
  • Threaded or thermowell mounted versions available
• Probe Material:
  • Stainless Steel
• Housing:
  • Industrial aluminium terminal head
• Hazardous Area Certifications:
  • ATEX
  • IECEx
  • FM (depending on configuration)
• Protection Rating:
  • IP65/IP66

Function

The ABB TR04-Ex measures process temperature using a platinum Pt100 sensing element whose electrical resistance changes with temperature. The integrated transmitter converts this resistance signal into a linear 4–20 mA output, allowing accurate temperature monitoring over long cable distances without signal degradation. The explosion-proof design makes it suitable for use in hazardous gas and dust environments.

Typical Applications

• Oil & gas facilities
• Refineries
• Chemical processing plants
• Pharmaceutical manufacturing
• Food & beverage processing
• Power generation
• Tank farms and storage terminals
• Industrial process control
• Hazardous area temperature monitoring