PRESSURE products

 The FKC model of the FCX-A IV series of pressure transmitters accurately measures a differential pressure, a liquid level or a flow rate and transmits a proportional 4-20 mA output signal. The transmitter uses an unique microcapacitive silicon sensor in combination with a stateof-the-art digital signal processing to provide exceptional performances in terms of accuracy and stability. FCX-A IV series of pressure transmitters comply with Safety Integrity Level 2 or 3 according to IEC 61508 and IEC 61511 standards. 

• Family: SmartLine® STD700 Series
   
• Model: STD725 (Differential Pressure)
   
• Technology: Piezoresistive sensor with on-chip temperature and static pressure compensation.
   
• Integration: Fully compatible with Honeywell Experion® PKS systems.
   

• Accuracy: Up to 0.05% of span
   
• Long-term Stability: 0.020% of URL per year (for 10 years)
   
• Rangeability: Up to 100:1
   
• Response Time: As fast as 100 ms
   
• Diagnostics: Comprehensive on-board digital diagnostics to minimize downtime
   
• Safety: Integral dual-seal design (ANSI/ISA 12.27.0 compliant)
   
• SIL Compliance: SIL 2/3 certified for safety applications
   
• Overpressure Protection: World-class, tested to MAWP 4500 psi (310 bar)
   
• Modularity: Replaceable meter bodies, displays, and electronics without recalibration.
   

• STD725: ±400 inH₂O (±1000 mbar), minimum span 4 inH₂O (10 mbar)
   
• STD735: ±100 psi (±7 bar), minimum span 1 psi (0.07 bar)
   
• STD775: up to 3000 psi (210 bar), minimum span 30 psi (2.1 bar)
   

• LCD Display: Modular, rotatable (0°, 90°, 180°, 270°)
   
• Units Supported: Pa, bar, psi, inH₂O, mbar, atm, torr, etc.
   
• Configuration Options:
   
  • External/ internal two-button setup (Zero/Span, loop test, calibration)
     
  • Handheld communicator (HART 7.0 protocol)
     

• Analog Output: 4–20 mA, HART 7.0
   
• Response Time: 100 ms
   
• Turn-On Time: 2.5 s
   
• Vibration Resistance: ±0.1% URL (IEC60770-1 compliant)
   
• Temperature Limits: -40 to +85°C (operating)
   
• Humidity: 0–100% RH
   

• Hazardous Area Approvals: FM, CSA, ATEX, IECEx, NEPSI, INMETRO, EAC, CCoE (India), etc.
   
• Protection Types: Explosion-proof, Intrinsically Safe, Flameproof, Dustproof, Non-incendive.
   
• Ingress Protection: NEMA 4X / IP66 / IP67
   

• Diaphragm: 316L SS / Hastelloy C-276
   
• Process Head: 316 SS / Carbon Steel / Hastelloy C-276
   
• Housing: Aluminum (powder-coated) or stainless steel
   
• Fill Fluids: Silicone oil or CTFE
   

✅ In summary:
The Honeywell SmartLine STD725 Differential Pressure Transmitter is a high-accuracy, SIL-certified, modular pressure instrument designed for tough industrial environments. With fast response, broad rangeability, advanced diagnostics, and global certifications, it is suitable for critical monitoring, control, and safety applications in process industries.

 The FKG model of the FCX-A IV series of pressure transmitters accurately measures a gauge pressure and transmits a proportional 4-20 mA output signal The transmitter uses an unique micro-capacitive silicon sensor in conbination with a state-of-the-art digital signal processing to provide exceptional performances interms of accuracy and stability. FCX-A IV series of pressure transmitters comply with Safety Integrity Level 2 or 3 according to IEC 61508 and IEC 61511 standards 

 Features 

• Ranges from 70 mbar (1 psi) to 700 bar (10000 psi) 

• Accuracy to ±0.04% Full Scale (FS) Best Straight Line (BSL) 

• Stainless Steel construction 

• Frequency response to 3.5 kHz 

• High over pressure capability

• Hazardous Area certifications 

• mV, mA, voltage and configurable voltage outputs 

• Multiple electrical & pressure connector options 

• Operating temperature ranges from –55 to +125°C (-67 to +257°F)