FOXBORO IDP10S-TLLB21FA Intelligent Differential Pressure Transmitter

Overview

Complete Model Code Decoding IDP10S-TLLB21FA

1. IDP10S: Advanced performance differential pressure transmitter series
2. T: Electronic circuit type — 4–20mA analog + superimposed HART digital communication, standard TÜV SIL2 certification
3. LL: Traditional sensor structure
   • Process cover: 316 stainless steel
   • Sensing diaphragm: 316L stainless steel
   • Filling fluid: Silicone oil
   • Max static working pressure: 3626 psi / 25 MPa
4. B: Measuring span range code
    
   Adjustable span: 0.12～50 kPa (0.5～200 inH₂O / 1.2～500 mbar), turndown ratio up to 10:1, max 400:1 wide range adjustment with FoxCal technology
5. 2: Process connection port — 1/2 NPT internal thread (same material as process cover)
6. 1: Electrical conduit & housing
    
   Double-side 1/2 NPT cable entry, die-cast aluminum transmitter housing
7. FA: Electrical safety certification — ATEX intrinsically safe Ex ia IIC, suitable for Zone 0/1 flammable hazardous areas

Core Technical Specifications

1. Electrical & Signal Performance

• Power supply: 12.5～42 VDC two-wire loop power supply
• Output: 4–20mA linear / square root (flow) output + HART 7 digital signal
• Accuracy: ±0.05% of reading (digital HART mode); ±0.06% FS (4–20mA analog)
• Long-term stability: ≤±0.05% URL per year, minimal zero drift
• Response time: 125ms adjustable damping (0～32s configurable via HART communicator)
• Built-in service timer: Record total power-on runtime for predictive maintenance
• Self-diagnosis: Sensor drift, circuit failure, line open/short circuit alarm

2. Wetted & Mechanical Parameters

• Wetted parts: 316SS cover + 316L SS isolation diaphragm, silicone fill fluid
• Max static pressure: 25 MPa (3626 psi)
• Process temperature range: -46℃ ～ +121℃ (silicone oil)
• Protection grade: IP66 / NEMA 4X, fully dustproof & splash-proof
• Mounting: Standard manifold bracket installation, compatible with 3-valve / 5-valve manifold
• Optional local LCD display with on-site operation buttons (suffix L1 if equipped)

3. Environmental & Safety Certifications

• Ambient working temperature: -40 ℃ ～ +85 ℃
• Certifications: ATEX Ex ia IIC, FM, CSA, IECEx intrinsically safe; TÜV SIL2 (5-year proof test interval)
• EMC anti-interference: Compliant with IEC 61000, minimal measurement error under strong electromagnetic field
• Double isolation design compliant with ANSI/ISA 12.27.01 for safety instrument loops

Main Functions

1. Differential pressure / flow / liquid level multi-scenario measurement
   • Match orifice plate, venturi tube to measure pipeline flow (square root output)
   • Measure tank liquid level via high/low side pressure difference; detect oil-water interface
   • Monitor filter pressure drop, pump differential pressure for clogging early warning
2. HART intelligent remote configuration & diagnosis
    
   Use handheld HART communicator or Foxboro I/A DCS to remotely modify measuring range, damping, unit, low-flow cutoff; upload real-time pressure, temperature, fault logs
3. FoxCal multi-point self-calibration technology
    
   Store up to 11 factory calibration curves, automatically match optimal curve after range adjustment, maintain high precision under large turndown ratio without frequent on-site calibration
4. SIL2 safety instrument system (SIS) matching
    
   Third-party TÜV safety certification, can be deployed in ESD emergency shutdown, high/low level interlock safety loops for chemical and power plants
5. Harsh industrial environment stable operation
    
   Wide temperature compensation algorithm, conformal coated circuit board, resistant to oil mist, dust, vibration in workshop and outdoor process areas

Advantages

• Ultra-high ±0.05% reading accuracy, superior to ordinary transmitters for precision process control
• Up to 400:1 wide turndown ratio, reduce spare part model inventory
• Standard SIL2 certification, one instrument for both ordinary control and safety interlock loops
• Dual-layer 316 stainless steel wetted parts, compatible with most water, oil, weak acid/alkali media
• IP66 full sealing housing, suitable for outdoor equipment and high-pressure cleaning sites
• Perfect seamless integration with Foxboro I/A Series DCS, unified system data interaction
• Complete self-diagnosis function, fast fault location to reduce equipment downtime
• Long 5-year factory warranty, low long-term maintenance cost

Typical Applications