ABB 266MRT Remote-Seal Differential Pressure Transmitter with Multisensor Technology
ABB 266MRT Remote-Seal Differential Pressure Transmitter
ABB model 266MRT-L.C.K.R.R.B.3.E1.L1.B1.S2.M5.C1 with S26 remote-seal assemblies is intended for differential-pressure, level, density and DP-flow duties where the process should be isolated from the transmitter. The remote diaphragms and capillaries allow measurement on hot, corrosive, viscous or plugging media when the selected wetted materials and fill fluid are compatible.
| Product data | Published family information |
|---|---|
| Model family | ABB 266MRT with remote diaphragm seals and multisensor technology |
| Base accuracy | Up to ±0.04%, depending on the ordered measuring range and configuration |
| Published span limits | 0.6 to 10,000 kPa across the 266MRT family |
| Output options | 4–20 mA HART, PROFIBUS PA or FOUNDATION Fieldbus |
| Safety capability | SIL 2 in 1oo1 and SIL 3 in redundant 1oo2 configurations, when ordered and applied accordingly |
Important order checks
The complete model code defines the measuring capsule, housing, communication, approvals, display and documentation. The two S26 codes define the high- and low-side seals, diaphragm material, process connection, capillary and fill system. Confirm both seal assemblies separately; similar-looking seals may not have the same pressure rating, material or temperature capability.
For a quotation, provide normal and design pressure, DP span, process and ambient temperature, liquid density, flange standard, seal size, wetted material, capillary length, installation elevation and hazardous-area classification. Both capillaries should be routed consistently and protected from unequal heating. The image is a 266-series physical reference; the exact supplied seals and suffix must be confirmed from the nameplate and ABB order acknowledgement.
