The ABB 266MST belongs to ABB’s 2600T pressure transmitter series and is engineered for demanding differential pressure applications. Its multisensor technology combines several sensing systems in one device, allowing simultaneous differential and absolute pressure measurement. Absolute pressure and sensor temperature are also used to compensate for environmental effects, supporting reliable long-term performance.
Key Features
- Base accuracy: ±0.04%, with optional ±0.025% accuracy
- Differential pressure span limits: 0.05 to 10,000 kPa
- Suitable for applications with working pressure up to 41 MPa
- Multisensor technology for simultaneous differential and absolute pressure measurement
- Supports flow, level, pressure, and density measurement
- 4–20 mA HART, PROFIBUS PA 3.01, and FOUNDATION Fieldbus ITK 6.x communication options
- Optional LCD display with Through-The-Glass (TTG) configuration
- Replaceable electronics module with automatic configuration
- SIL2 capability in a single-transmitter configuration (1oo1) and SIL3 in a redundant configuration (1oo2), according to IEC 61508
- PED Category III compliance
Applications
The ABB 266MST is suitable for flow measurement in liquid, gas, and steam systems, as well as tank level, pressure, and density measurement. Typical applications include chemical processing, oil and gas, power generation, and other industrial process environments where measurement stability and reliable performance under high working pressure are important.
Why Choose ABB 266MST?
The ABB 266MST combines high accuracy, multisensor compensation, and flexible communication options in one transmitter. Its replaceable electronics and TTG configuration help simplify maintenance, while its broad measurement capabilities make it a versatile solution for demanding process applications.
5. Frequently Asked Questions
1. What is the ABB 266MST used for?
It is used for differential pressure measurement and can support flow, level, pressure, and density applications involving liquids, gases, and steam.
2. What is the accuracy of the ABB 266MST?
The base accuracy is ±0.04%, with an optional ±0.025% accuracy configuration.
3. What is the measuring range of the ABB 266MST?
The published span limits are 0.05 to 10,000 kPa. The final calibrated range depends on the selected sensor and application.
4. What is the maximum working pressure?
The ABB 266MST is designed for applications with working pressure up to 41 MPa (5,945 psi). Confirm the allowable pressure for the specific configuration before ordering.
5. What is multisensor technology?
Multisensor technology combines multiple sensing systems in one transmitter, enabling simultaneous differential and absolute pressure measurement. Absolute pressure and sensor temperature are also used to compensate for environmental influences on the sensor.
6. Which communication protocols does the ABB 266MST support?
It supports 4–20 mA HART, PROFIBUS PA 3.01, and FOUNDATION Fieldbus ITK 6.x options.
7. Does the ABB 266MST support local configuration?
Yes. An optional LCD display with TTG technology allows supported settings to be configured in the field without removing the windowed front cover.
8. Can the electronics module be replaced?
Yes. The transmitter features an in-field replaceable electronics module with automatic configuration, helping simplify maintenance and replacement.
9. Is the ABB 266MST suitable for safety instrumented systems?
ABB specifies SIL2 capability for a single-transmitter configuration (1oo1) and SIL3 for a redundant configuration (1oo2), according to IEC 61508. Verify the applicable certification and system requirements for the intended safety function.
10. How can I request a quotation for the ABB 266MST?
Contact ProInstru with your required differential pressure range, working pressure, process medium, communication protocol, display requirements, and certification needs to request a suitable configuration and quotation.
