
Product Description
📡 ABB 266DDHFSSA2A1E1L1C1H3 Smart Differential Pressure Transmitter
The ABB 266DDH represents the pinnacle of differential pressure measurement technology, combining advanced diaphragm seal design with WirelessHART communication and SIL 2/SIL 3 safety certification. This intelligent transmitter delivers ±0.06% accuracy across a 0.05-16,000 kPa range, providing reliable process measurements for critical applications in oil & gas, chemical processing, power generation, and water treatment industries.
⚙️ Technical Specifications
Core Performance
Model Code: 266DDHFSSA2A1E1L1C1H3
Measurement Type: Differential Pressure
Accuracy: ±0.06% of span (basic)
Pressure Range: 0.05 to 16,000 kPa
Diaphragm Seal: Direct-mounted (high side) + remote option (low side)
Communication: 4-20mA HART, Profibus PA, FF, WirelessHART
Safety Rating: IEC 61508 SIL 2/SIL 3 (TÜV certified)
Battery Life: 10 years @ 32-second update rate (wireless)
Display: Hot-swappable field display with TTG window
Compliance: PED Class III, ATEX, IECEx, FM, CSA
Operating Temp: -40°C to +85°C ambient
🏭 Industrial Applications
Flow Measurement (DP-based): Measures differential pressure across orifice plates, venturi tubes, and flow nozzles in custody transfer applications, pipeline metering, and process flow control where ±0.1% flow accuracy is required for billing, regulatory reporting, and mass balance calculations in refineries and chemical plants.
Level Measurement (Hydrostatic): Monitors liquid level in pressurized vessels, storage tanks, and separators by measuring differential pressure between tank bottom and vapor space, providing accurate inventory data for batch processes, blending operations, and safety instrumented systems preventing overfill conditions.
Filter Monitoring: Tracks differential pressure across filters, strainers, and catalyst beds in water treatment plants, pharmaceutical cleanrooms, and petrochemical units, triggering maintenance alerts when pressure drop exceeds setpoints indicating filter clogging or breakthrough conditions.
Density & Interface Detection: Calculates fluid density and detects liquid-liquid interfaces in separators, decanters, and distillation columns by measuring pressure differential at known elevations, enabling automated phase separation and product quality control in oil-water separation and solvent recovery systems.
💎 Advanced Features & Benefits
Leak-Free Diaphragm Seal Design: ABB's patented seal eliminates threaded connections and gaskets that cause 60% of transmitter failures, using welded construction with minimal oil fill to reduce temperature-induced errors by 40% and extend MTBF to 200+ years—eliminating costly unplanned maintenance in critical services.
WirelessHART Deployment: Reduces installation costs by $3K-8K per measurement point by eliminating conduit, cable trays, and marshalling cabinets in remote or hazardous locations, with 10-year battery life enabling monitoring in areas previously considered uneconomical for wired instrumentation.
SIL 2/SIL 3 Safety Certification: TÜV-certified for use in safety instrumented functions (SIF) protecting against high-consequence hazards, meeting IEC 61508 requirements for overpressure protection, emergency shutdown, and burner management systems in refineries, chemical plants, and power stations.
Self-Configuration & Hot-Swap: On-board intelligence enables field replacement without calibration or configuration downloads, reducing commissioning time from 2 hours to 15 minutes per transmitter, while hot-swappable display allows parameter changes in explosion-proof areas without opening enclosure or obtaining hot work permits.
📦 Complete Package
- 1× ABB 266DDH Differential Pressure Transmitter
- Integrated diaphragm seal assembly
- Hot-swappable LCD display module
- Factory calibration certificate (traceable to NIST)
- Installation manual and configuration guide
Genuine ABB Measurement & Analytics product with global service network. Essential for process engineers, instrumentation technicians, and reliability teams managing critical pressure measurement applications. Compatible with all major DCS/PLC systems and asset management platforms (AMS, PDM, FDT/DTM).