Parameters Category Parameter Specification / Interpretation for 266HSHQKBB1 General Model Series 2600T Series (FMT - Flow Multivariable Transmitter) Type Smart Multi-Variable Flow Transmitter (4-20mA HART) Measured Variables Differential Pressure (ΔP), Static Pressure (Ps), Temperature (T). Measurement Performance ΔP Span Range Wide range, model-specific. The suffix QKBB1 defines a specific range. Example: 0 to 100 kPa (1 bar). Static Pressure (Ps) Range High Range, e.g., 0 to 16 MPa (2320 psi). Temperature (T) Range Integrated RTD: -40°C to +125°C. Reference Accuracy (Flow) ±0.15% of reading (typical for compensated flow). Long-Term Stability ±0.1% of URL per year. Computation & Output Calculated Variable Mass Flow or Volumetric Flow (density-compensated). Fluid Database Pre-loaded with common gas & steam properties; user-definable. Primary Element Support Orifice, Venturi, Nozzle, Wedge, Pitot Tube (per ISO/AGA). Analog Output 4-20 mA, two-wire. Primary Variable = Flow. Digital Output HART 5/6/7 Protocol. Access to PV, SV (Ps), TV (T). Electrical Supply Voltage 10.5 to 42 V DC (Two-wire loop powered). Communication HART (Bell 202 FSK). Process Connections & Materials ΔP Ports 1/4" NPT or G1/2" female. Ps & T Port Integrated, with 1/2" NPT process connection. Wetted Parts Suffix HQK indicates materials: Likely Hastelloy C-276 isolating diaphragms for superior corrosion resistance. BB1 indicates flange/connection type. Mechanical & Environmental Housing Stainless Steel. Protection Degree IP66 / IP67 / NEMA 4X. Process Temperature -40°C to +120°C (wetted parts). Ambient Temperature -40°C to +85°C. Certifications Explosion Protection ATEX / IECEx: Ex ia IIC T4/T6 Ga & Ex d IIC T4/T6 Gb options. Safety Integrity SIL 2/3 capable.