The 266MRT is a differential pressure transmitter with remote or direct-mount seals, designed for isolating viscous, hazardous, or high-temperature process fluids. It features an all-welded construction, supporting pressures up to 41 MPa (5945 psi) and operating from full vacuum to 160 bar, with diaphragms in AISI 316L, Hastelloy C-276, or tantalum and fill fluids including silicone oil or Galden. Base accuracy is 0.04% of calibrated span, with a turn-down ratio up to 60:1. It is certified for SIL2 (1oo1) and SIL3 (1oo2) per IEC 61508 and includes TTG keypad configuration without opening the housing. Ambient operating temperature ranges from -40 °C to 85 °C. The aluminum or AISI 316L housing supports 1/4-18 NPT or 1/2-14 NPT process connections, and the unit weighs approximately 3.7 kg without seals. It meets ANSI/ISA-S82.03 hydrostatic test requirements and can be mounted in any position.
Thanks to Taylor’s “All-Welded” technology in remote seal manufacturing as well as to the longstanding expertise, 266MRT can offer unmatched total performances and a wide selection of options such as fill fluid, diaphragm material, capillary protection and mounting connections. ABB, leader in severe process measurements, is able to provide the right solution for the most critical process media at extreme ambient and process conditions.
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 266MRT 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 266MRT |
| Product Name | Differential Pressure Transmitter |
| Signal Output | HART® Protocol (optional feature); PROFIBUS® (optional feature); FOUNDATION (optional feature) |
| Sensor Technology | Mechanical Deflection |
| Pressure Measurement | Differential; Sealed; Negative Pressure |
| Media | Liquid; Gas |
