Parameters Category Parameter Specification / Interpretation for 266DSHBSHA1B7LSB1TB 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 (A1) Defined by suffix "A1". Example: 0 to 100 kPa (1 bar). (Exact value 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. Turndown Ratio Up to 100:1. User Interface Display Large, backlit Graphical LCD. Local Controls Infrared Push Buttons (for hazardous area compliance). Functions via Buttons Zero adjustment, range setting (with password), display configuration, diagnostics view. 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 (BSH) Isolating Diaphragms: Hastelloy C-276 or equivalent. Process Flanges: 316L SST. Fill Fluid Silicone Oil or Inert Fluorocarbon (specify 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) - Dual Certification. Local Safety (LSB1) Infrared push buttons certified for Ex ia intrinsic safety, allowing safe operation in Zone 0/1. Functional Safety SIL 2/3 capable.