The ABB Model 266AST is an absolute pressure transmitter designed for a wide range of applications. It features a base accuracy of 0.04% of calibrated span, with an optional accuracy of 0.025%. The transmitter supports a large turn down ratio of up to 100:1 and offers a comprehensive selection of sensors optimized for performance and stability. It boasts a 10-year stability of 0.15% of the upper range limit (URL) and allows for flexible configuration through local keys on an LCD indicator, utilizing TTG (Through-The-Glass) technology for easy adjustments without opening the cover. The 266AST is certified for use in safety instrumented systems according to IEC 61508, suitable for SIL2 applications in a single configuration and SIL3 in a redundant setup. It complies with the Pressure Equipment Directive (PED) category III and the RoHS II directive. The transmitter also includes advanced diagnostics and has configurable damping options, with a turn-on time of less than 10 seconds. It is available in various sensor span limits and materials, making it adaptable for different industrial environments.
In addition to the plug-in terminal block, this transmitter features in-field replaceable electronics module that thanks to the auto-configuration functionality dramatically improves plant productivity. Its intuitive plug-and-play display with easy setup procedure really helps users by saving time and lowering maintenance and inventory costs. Moreover, the innovative TTG (Through The Glass) technology allows users to configure the instruments in the field without removing the windowed front cover and consequently to save a lot of time.
The 266AST is certified by TUV NORD for use in safety instrumented systems as per the requirements of IEC61508. The transmitters meet the requirements for SIL2 applications in a single transmitter configuration (1oo1) and for SIL3 applications in a redundant configuration (1oo2).
| ABB Measurement & Analytics | |
|---|---|
| Product Category | Pressure Transmitters |
| Product Number | Model 266AST |
| Product Name | Absolute Pressure Transmitter |
| Signal Output | HART® Protocol (optional feature); PROFIBUS® (optional feature); FOUNDATION (optional feature) |
| Sensor Technology | Mechanical Deflection |
| Pressure Measurement | Absolute |
| Media | Liquid; Gas |
