Parameters Category Parameter Specification / Interpretation for 266DSHFSHB1A7TB General Model Series 2600T Series (DST - Differential Pressure Smart Transmitter) Type Smart dP Transmitter with Local Operator Interface (LOI) Output 4-20 mA DC, Two-wire, HART 7 Digital. Measurement Performance Measured Variable Differential Pressure (dP) Calibrated Span (FSHB1) Defined by suffix "FSHB1". This indicates a specific sensor range. Example: 0 to 400 kPa (4 bar) or 0 to 1 MPa (10 bar). Must be verified from datasheet. Reference Accuracy ±0.055% to ±0.075% of calibrated span (Typical for this performance grade). Long-Term Stability ±0.1% of URL per year. Turndown Ratio Up to 100:1 (Software configurable). User Interface Display Backlit LCD (Local readout of pressure, current, percentage, etc.). Local Controls Push Buttons (for local configuration and navigation). Electrical Supply Voltage 10.5 to 45 V DC (Two-wire). Load Limit R_L ≤ (Vs - 10.5V) / 0.022 A (Ω). Communication HART 7 Protocol. Process Connections & Materials Wetted Parts (HB) Isolating Diaphragms: Hastelloy C-276 (High corrosion resistance). Process Flanges: 316L SST. Fill Fluid Silicone Oil (Standard) or Inert Fluorocarbon (for O2/aggressive service). Pressure Ports 1/4" NPT or G1/2" female. Static Pressure Rating Up to 16 MPa (2320 psi). Mechanical & Environmental Housing Stainless Steel. Protection Degree IP66 / IP67 / NEMA 4X. Process Temperature -40°C to +120°C. Ambient Temperature -40°C to +85°C. Certifications & Safety Explosion Protection (TB) ATEX / IECEx: Ex d IIC T4/T6 Gb (Flameproof) & Ex ia IIC T4/T6 Ga (Intrinsic Safety) options. The "TB" package defines the specific certificates included. Functional Safety SIL 2/3 capable.