Spot supply of original ABB pressure transmitter 266AST high-performance absolute pressure transmitter
The ABB 266AST high-performance transmitter is a high-performance transmitter designed for absolute pressure measurement, using a standard pressure structure. It is suitable for applications involving liquids, gases, and steam. It offers a wide range of options, such as oil filling and wetted materials, and is suitable for critical measurement points in harsh conditions. Typical features include long-term stability and reliability.
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Detailed introduction
1. Product Overview:The ABB 266AST high-performance transmitter is a high-performance transmitter designed for absolute pressure measurement, using a standard pressure structure, suitable for applications involving liquids, gases, and steam. It offers a wide range of options, such as oil filling and wetted materials, and is suitable for critical measurement points in harsh conditions. Typical features include long-term stability and reliability.
Here are the key features of the ABB 266AST high-performance absolute pressure transmitter:
High Accuracy: Standard accuracy of ±0.04% of calibrated span, with an optional upgrade to ±0.025%.
Wide Measuring Range: Covers absolute pressures from 0.3 kPa up to 60,000 kPa (8700 psi), making it suitable for everything from vacuum systems to high-pressure steam.
Long-Term Stability: Guaranteed 10-year stability of 0.15% of URL, reducing recalibration needs.
TTG (Through-The-Glass) Technology: Enables local configuration via capacitive touch keys without opening the housing—ideal for hazardous or explosion-proof environments.
SIL Certification: Certified for SIL2 (1oo1) and SIL3 (1oo2) applications per IEC 61508, supporting safety-critical systems.
Flexible Configuration: Offers a wide selection of fill fluids, sensor codes, and wetted materials to match process conditions.
Advanced Diagnostics: Built-in self-diagnostics for predictive maintenance and process insight.
Fast Response Time: Ready for operation in under 10 seconds with minimal damping.
2. Technical Parameters:
| Parameter | Details |
|---|---|
| Measurement Type | Absolute pressure |
| Span Range | 0.3 to 60,000 kPa abs (up to 8700 psi) |
| Accuracy | ±0.04% of calibrated span (optional ±0.025%) |
| Long-Term Stability | ±0.15% of URL over 10 years |
| Communication Protocols | 4–20 mA with HART, PROFIBUS PA, FOUNDATION Fieldbus |
| Response Time | < 100 ms (with minimal damping) |
| SIL Certification | SIL2 (1oo1) and SIL3 (1oo2) per IEC 61508 |
| Local Configuration | Through-The-Glass (TTG) technology (no need to open the housing) |
| Diagnostics | Advanced self-diagnostics and predictive maintenance capabilities |
| Process Connection | Threaded, flanged, or hygienic adapters available |
| Materials | Stainless steel, Hastelloy, Monel, and other wetted part options |
| Explosion Protection | ATEX, IECEx, FM, CSA, and other international hazardous area certifications |
3. Frequently Asked Questions – ABB 266AST
1. What type of pressure does the 266AST measure?
It measures absolute pressure, meaning it references a perfect vacuum and is ideal for vacuum systems, distillation, and vapor pressure monitoring.
2. What is the accuracy of the 266AST?
Standard accuracy is ±0.04% of calibrated span, with an optional upgrade to ±0.025% for high-precision applications.
3. Is it suitable for safety-critical systems?
Yes, it’s certified for SIL2 (1oo1) and SIL3 (1oo2) per IEC 61508, making it suitable for functional safety applications.
4. Can I configure it without opening the housing?
Absolutely. It features Through-The-Glass (TTG) technology, allowing local configuration via capacitive touch—even in hazardous areas.
5. What communication protocols are supported?
It supports 4–20 mA with HART, PROFIBUS PA, and FOUNDATION Fieldbus.
6. What’s the maximum pressure it can handle?
Depending on the sensor code, it can measure up to 60,000 kPa abs (8700 psi) and withstand overpressure up to 90 MPa (13050 psi).
7. What materials are available for wetted parts?
Options include 316L stainless steel, Hastelloy C, Monel, and other corrosion-resistant alloys.
8. How long does it stay accurate?
It offers 10-year stability of ±0.15% of URL, minimizing recalibration needs.
9. Is it explosion-proof?
Yes, it carries certifications like ATEX, IECEx, FM, and CSA for use in hazardous environments.
10. Where can I find the official datasheet?
You can download it from or access the full technical documentation via the .
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