Description

The HONEYWELL 05701-A-0325 is a high-stability differential pressure (DP) transmitter from Honeywell’s ST 3000 SmartLine series, engineered for critical flow, level, and pressure applications in harsh industrial environments. Leveraging Honeywell’s proprietary Digital Sensor Technology (DST), this transmitter achieves ±0.065% accuracy with industry-leading 1000:1 turndown capability – enabling precise measurement from near-zero to full-scale process conditions. The HONEYWELL 05701-A-0325 features all-welded 316L stainless steel construction with optional Hastelloy C-276 diaphragms, designed for corrosive services in oil/gas, chemical, and marine applications. Its integrated manifold simplifies installation while reducing potential leak points. With SIL 3 certification per IEC 61508 and global hazardous area approvals (ATEX/IECEx), this transmitter provides fail-safe operation in safety instrumented systems. Native support for HART 7, FOUNDATION Fieldbus, and PROFIBUS PA protocols enables advanced diagnostics and predictive maintenance integration with Honeywell Experion® DCS.

Technical Specifications

Main Features and Advantages

Extreme Measurement Flexibility: The HONEYWELL 05701-A-0325 delivers unmatched 1000:1 turndown – 10x greater than conventional transmitters – enabling accurate flow measurement from startup to peak capacity without recalibration. Its auto-ranging capability adapts to process changes in real-time.

Robust Process Compatibility: Engineered for aggressive media with dual-diaphragm seals and chemical-resistant fill fluids (KEL-F or Halocarbon). Optional Hastelloy C-276 diaphragms withstand hydrogen sulfide (H₂S) environments per NACE MR0103.

Intrinsic Safety Features: Dual-compartment housing isolates electronics from process connections, while embedded diagnostics monitor sensor health, impulse line blockages, and overpressure events. The transmitter generates SIL-compliant failure alerts within 100ms.

Marine-Grade Durability: Featuring IP68/NEMA 6P sealing and DNV-GL certification, the HONEYWELL 05701-A-0325 operates submerged in 3m saltwater for 72 hours – ideal for offshore platforms and ballast tank level monitoring.

Predictive Maintenance Ready: Honeywell’s Embedded Process Intelligence (EPI) tracks 12+ health parameters, predicting seal failure or drift 30+ days in advance via Experion® Asset Sentinel.

Application Field

The HONEYWELL 05701-A-0325 excels in demanding hydrocarbon and chemical processes. In refineries, it measures crude column differential pressure with ±0.1% accuracy at turndowns exceeding 500:1. Offshore platforms deploy its submersible-rated variant for seawater lift pump monitoring and produced water tank interfaces.

For chemical processing, its Hastelloy version handles chlorine vapor flow measurement in chlor-alkali plants. Power plants utilize it for feedwater flow via venturi tubes, where 1000:1 turndown accommodates load swings from cold start to full capacity. In LNG terminals, cryogenic remote seals enable accurate level measurement in -162°C storage tanks. The transmitter’s SIL 3 certification makes it critical for safety systems: wellhead choke valve control, flare gas recovery, and boiler drum overpressure protection.

Related Products

STT750 : Temperature transmitter for compensation

FFI10 : FOUNDATION Fieldbus isolator

HART475 : Handheld communicator

SMV3000 : Multivariable flow transmitter

UDA2186 : Remote diaphragm seal

C300 : Safety controller for SIL 3 loops

STG700 : Gauge pressure transmitter

Experion HS : DCS integration platform

Installation and Maintenance

Pre-installation preparation: Verify flange rating compatibility and torque bolts to 35 N·m using cross-pattern sequence. For level applications, perform zero elevation/suppression calibration via HART communicator before pressurization. Ensure impulse lines are purged of air/condensate.

Maintenance recommendations: Conduct zero trim every 6 months using blocked-valve method. Inspect diaphragm seals annually for pitting in erosive services. Utilize predictive diagnostics to schedule seal replacements at 90% EPI health score. Replace fill fluid every 5 years in high-temperature applications.