ABB TH02-EX Head-Mounted Temperature Transmitter

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1. Product Overview

The ABB TH02-EX is a Head-Mounted Temperature Transmitter designed for industrial process temperature measurement and control. It mounts directly on top of a thermocouple or RTD junction box, converting the temperature signal into a standard 4–20 mA output for remote transmission and digital process control.

The TH02-EX features an explosion-proof design compliant with ATEX and IECEx standards, making it safe for use in hazardous environments such as petrochemical, chemical, pharmaceutical, power, and oil & gas industries.

2. Main Technical Specifications

• Model: TH02-EX

• Type: Head-Mounted Temperature Transmitter

• Input Types: Thermocouple (TC: K, J, T, E, N, R, S, B) or RTD (Pt100, Pt1000)

• Output Signal: 4–20 mA, two-wire

• Accuracy: ±0.1% FS

• Supply Voltage: 12–36 V DC

• Temperature Compensation: Built-in cold junction compensation

• Explosion Protection: ATEX II 1G / IECEx ia IIC T4…T6

• Operating Temperature: -40°C to +85°C

• Process Connection: Standard head-mounted junction box

• Electrical Connection: 2-wire or 4-wire terminal

• Housing Material: Aluminum alloy or stainless steel, corrosion-resistant

• Protection Class: IP66

• Response Time: <1 s (typical)

• Weight: ~0.3 kg

3. Advantages and Features

1. High-Precision Measurement

• Accuracy up to ±0.1% FS ensures reliable industrial temperature control.

• Built-in cold junction compensation enhances thermocouple measurement accuracy.

2. Explosion-Proof Safety

• Complies with ATEX and IECEx standards for safe operation in hazardous areas.

• Suitable for gas, dust, or flammable liquid environments.

3. Wide Environmental Adaptability

• Stable operation in -40°C to +85°C industrial environments.

• Corrosion- and wear-resistant housing suitable for chemical and pharmaceutical industries.

4. Easy Installation & Maintenance

• Head-mounted design for direct mounting on thermocouple or RTD junction boxes.

• Standard terminal connections simplify installation and maintenance.

5. Fast Response

• Short response time (<1 s) ideal for dynamic temperature control.

• Reliable signal output supports remote monitoring and process automation.

4. Typical Application Areas

• Petrochemical, oil, and gas temperature monitoring

• Pharmaceutical and food processing temperature control

• Power and energy system temperature monitoring

• Temperature measurement in hazardous/explosive environments

• Industrial automation process control and data acquisition

5. Precautions

1. Verify transmitter model, input type, and explosion-proof rating match the site environment.

2. Ensure terminal connections are secure to avoid signal errors.

3. Avoid strong electromagnetic interference; use shielded cables if necessary.

4. Regularly inspect the explosion-proof housing and terminals to maintain protection.

5. Strictly follow ATEX/IECEx standards; do not use beyond certified environments.

6. Installation and maintenance should be performed by qualified personnel.