ABB TTH300

Description

Product Description

The ABB TTH300 is a high-performance, industrial-grade temperature transmitter from ABB’s renowned portfolio of process instrumentation. This two-wire transmitter is specifically designed to connect directly to thermocouples (TC) or resistance temperature detectors (RTDs) and convert their non-linear, low-level signals into a standardized, robust 4-20 mA analog output signal suitable for PLCs, DCS, and other control systems. The ABB TTH300 excels in providing reliable and accurate temperature measurements in demanding industrial environments, offering advanced features for configuration and diagnostics. As a key component in process control loops, it ensures signal integrity from the sensor to the controller. For detailed technical specifications, configuration manuals, and safety instructions, please visit the official product page for the ABB TTH300. The versatility and robustness of the ABB TTH300 make it a cornerstone for precise temperature monitoring across a wide spectrum of industries.

Product Parameters

• Product Type: Two-Wire Temperature Transmitter (Head-Mount or Rail-Mount).

• Model Series: TTH300.

• Sensor Input: Compatible with a wide range of thermocouples (Types J, K, S, R, etc.) and RTDs (Pt100, Pt500, Ni100, etc.).

• Output: Standard 4-20 mA analog signal, linear to the measured temperature. HART protocol communication is typically integrated for digital configuration and diagnostics.

• Power Supply: Operates on the standard two-wire loop, requiring a supply voltage of 12-36 V DC (loop-powered).

• Accuracy: High accuracy, typically within ±0.1% of span or better, depending on sensor type.

• Ambient Temperature Range: Designed for stable operation over a wide ambient temperature range, suitable for field mounting.

• Display: Optional local display module for showing temperature values and diagnostics.

• Enclosure Rating: High degree of protection (typically IP66, NEMA 4X), making it dust-tight and resistant to water jets, suitable for harsh outdoor or washdown areas.

• Configuration: Configured via HART communicator, handheld configurator, or PC software (e.g., ABB’s Field Information Manager).

Advantages and Features

The ABB TTH300 offers significant advantages in temperature measurement and integration. Its primary strength is exceptional accuracy and long-term stability, which is critical for process control and quality assurance. The built-in HART protocol allows for remote configuration, diagnostics, and monitoring without interrupting the 4-20 mA signal, enabling predictive maintenance. It features advanced sensor diagnostics, such as detection of sensor burnout, short circuit, or degradation. The transmitter’s robust housing ensures reliable performance in corrosive, wet, or extreme temperature environments. The ABB TTH300 is also known for its user-friendly setup and extensive sensor linearization libraries, simplifying commissioning and reducing potential configuration errors.

Application Cases in Various Fields

• Chemical & Petrochemical: Measuring reactor temperatures, distillation column tray temperatures, and pipeline temperatures for critical process control and safety.

• Pharmaceutical & Biotechnology: Providing precise temperature monitoring in bioreactors, fermentation tanks, autoclaves, and cleanrooms where accuracy and data integrity are paramount.

• Food & Beverage: Monitoring and controlling temperatures in pasteurization processes, cooking vats, refrigeration units, and sterilizers.

• Power Generation: Measuring steam temperatures, bearing temperatures, and flue gas temperatures in boilers, turbines, and heat recovery systems.

• HVAC & Building Management: Monitoring critical temperatures in chiller plants, boiler rooms, and data center cooling systems for efficient energy management.

Comparison with Competing Products

Compared to basic temperature transmitters, the ABB TTH300 stands out with its high accuracy, advanced HART diagnostics, and robust construction. When compared to smart transmitters from other leading manufacturers like Emerson (Rosemount 3144P), Siemens (Sitrans TH400), or Endress+Hauser (iTEMP TMT142), the TTH300 is highly competitive. ABB’s offering is often distinguished by its intuitive configuration tools, wide sensor compatibility, and strong reputation for durability in harsh environments. Compared to directly wiring a sensor to a PLC’s analog input card, using a TTH300 transmitter provides a much stronger, noise-immune signal, better accuracy through dedicated linearization, and valuable diagnostic information, justifying its cost for critical measurements.

Selection Suggestions and Precautions

1. Sensor Type Matching: Select the correct ABB TTH300 model variant configured for your specific sensor type (e.g., Pt100 3-wire or Type K thermocouple). Using the wrong sensor type will cause significant measurement errors.

2. Measurement Range: Configure the transmitter’s range (lower and upper range values, LRV/URV) to match the expected process temperature, optimizing the use of the 4-20 mA span for best resolution.

3. HART Network Planning: If using HART for configuration, understand that multiple transmitters can be on the same loop, but network resistance and device count must be considered. A HART modem or communicator is required for configuration.

4. Installation Environment: Ensure the transmitter’s enclosure rating (IP66/NEMA 4X) is suitable for the installation location (e.g., outdoor, humid, washdown areas). For extreme ambient temperatures, consider a protective sun shield or housing.

5. Calibration: While highly accurate, the TTH300 should be calibrated periodically against a standard, especially for critical control loops. Its digital trim feature via HART simplifies this process.

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