Parameters Category Parameter Specification for PFTL101A-2KN General Model Series 2600T Series Type Smart, Low-Range Differential Pressure Transmitter Output Signal 4-20 mA DC, two-wire, with HART digital communication. Measurement Performance Measured Variable Differential Pressure (dP) Span Limits (Typical) Minimum: 0.1 kPa (1 mbar, ~0.4 inH₂O) Maximum: 40 kPa (400 mbar, ~6 psi) Reference Accuracy ±0.075% of calibrated span (typical for this class). Long-Term Stability ±0.1% of URL per year (typical). Turndown Ratio Up to 100:1 (programmable). Electrical Supply Voltage 10.5 to 45 V DC (standard for two-wire loop). Load Limit R_L ≤ (Vs - 10.5V) / 0.022 A (Ω) Communication HART Protocol (Bell 202 FSK). Process Connections & Materials Wetted Parts Isolating Diaphragms: 316L SST Process Flanges: 316 SST Fill Fluid Silicone oil or Inert Fluorocarbon (for aggressive media). Pressure Ports 1/4" NPT female or G1/2" (common). Static Pressure Limit Typically 16 MPa (2300 psi) for flange. Overpressure Limit Up to full static pressure rating without damage. Mechanical & Environmental Housing Material Aluminum alloy with epoxy paint or stainless steel. Protection Degree IP66 / IP67 / NEMA 4X Display (Optional) Local indicator (LCD) available. Process Temperature Limits -40°C to +120°C (for standard fill fluid). Ambient Temperature Limits -40°C to +85°C Certifications Explosion Protection ATEX / IECEx: Ex ia IIC T4/T6 Ga (Intrinsic Safety) & Ex d IIC T4/T6 Gb (Flameproof) options. Other CE, SIL 2/3 (capable).