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266DSH FSSAIA7/EY/LS/TB

The ABB 266DSH FSSA1A7/EY/LS/TB is a high-precision differential pressure transmitter designed for industrial process applications requiring accurate measurement of liquids, gases, or steam. Part of ABB’s 266DSH series, this transmitter combines robust construction, long-term stability, and advanced diagnostics, making it suitable for demanding and safety-critical environments.

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Parameters Category Parameter Specification / Interpretation for 266DSH FSSAIA7/EY/LS/TB General Model Series 2600T Series (DST - Differential Pressure Smart Transmitter) Type Smart dP Transmitter with Remote Diaphragm Seals & Local Interface Output 4-20 mA DC, Two-wire, HART 7 Digital. Measurement Performance Measured Variable Differential Pressure (dP) Calibrated Span (FSSAIA7) Defined by core code. Example: 0 to 40 kPa (0.4 bar). Must be verified from datasheet. Reference Accuracy ±0.055% to ±0.075% of calibrated span (Typical for this grade). Long-Term Stability ±0.1% of URL per year. Options & Features Remote Diaphragm Seals (/EY) Material: 316L SST, Hastelloy, Tantalum, etc. (Specified separately). Capillary Length: Custom (e.g., 1m, 3m, 5m). Fill Fluid: Silicone oil, Inert fluid (matched to process temp.). Local Operator Interface (/LS) Graphical LCD Display. Infrared Push Buttons for Ex ia certified local operation. Certification Package (/TB) ATEX / IECEx: Ex d IIC T6 Gb (Flameproof) & Ex ia IIC T6 Ga (Intrinsic Safety) certificates. May include SIL documentation. Electrical Supply Voltage 10.5 to 45 V DC (Two-wire). Communication HART 7 Protocol. Process Connection (via Seals) Seal Process Connection Flanged (e.g., DIN, ANSI, JIS) or Threaded (e.g., 1/2" NPT). Defined with /EY order. Transmitter Pressure Ports For capillary connection (e.g., 1/4" NPT). Mechanical & Environmental Transmitter Housing Stainless Steel, Flameproof (Ex d) enclosure. Protection Degree IP66 / IP67 / NEMA 4X. Ambient Temperature (Tx) -40°C to +85°C. Process Temperature (Seals) Depends on seal fill fluid. Can exceed +400°C with appropriate seals/fluid.