Description
The HONEYWELL 05704-A-0146 is a high-reliability, loop-powered pressure transmitter engineered for precision measurement in industrial automation, fluid power, and process control systems. Featuring a rugged stainless steel sensing element and industry-standard 4–20 mA output with optional HART digital communication, it delivers exceptional accuracy and long-term stability under demanding conditions. The HONEYWELL 05704-A-0146 bridges the gap between field-level pressure data and control-layer intelligence—ensuring safe, efficient, and responsive operations.
Application Scenarios
At a North American automotive stamping plant, inconsistent hydraulic press force caused part deformation and costly scrap. Legacy mechanical gauges offered no remote visibility, and low-cost transducers drifted weekly due to thermal cycling. After installing the HONEYWELL 05704-A-0146 on each press circuit, engineers gained real-time, drift-free pressure feedback directly into their Rockwell PLC. Within days, closed-loop pressure control reduced variability by 92%, and predictive maintenance alerts flagged a failing pump before catastrophic failure. For maintenance teams, the HONEYWELL 05704-A-0146 transformed pressure from a passive reading into an active control variable.
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Note: Zero and span adjustments via magnetic tool or HART communicator—no open housing required.
Technical Principles and Innovative Values
Innovation Point 1: Monolithic Silicon Piezoresistive Sensing
The HONEYWELL 05704-A-0146 uses a single-crystal silicon diaphragm with integrated strain gauges, eliminating welds or seals that cause hysteresis. This design ensures <0.1% total error band over 10 years—far exceeding standard industrial transmitters. Innovation Point 2: True HART 7.0 Over 4–20 mA Beyond analog signaling, the HONEYWELL 05704-A-0146 supports bidirectional HART communication for remote calibration, diagnostics, and asset management—enabling integration with AMS, Emerson DeltaV, or third-party SCADA without gateways. Innovation Point 3: Thermal Compensation via Onboard ASIC An application-specific integrated circuit (ASIC) continuously corrects for temperature-induced drift across the full operating range. Unlike generic sensors that require manual recalibration in summer/winter, the HONEYWELL 05704-A-0146 maintains accuracy year-round. Innovation Point 4: Robust EMI/RFI Immunity for Factory Floors With >100 dB common-mode rejection and compliance to IEC 61000-4 standards, the HONEYWELL 05704-A-0146 operates reliably near VFDs, welders, and high-power motors—where cheaper sensors fail silently.
Application Cases and Industry Value
During a retrofit at a municipal wastewater treatment plant in Germany, aging pneumatic level sensors in digester tanks were replaced with HONEYWELL 05704-A-0146 units configured for differential pressure-based level measurement. The transmitters’ IP65 rating withstood constant humidity, while HART-enabled diagnostics allowed technicians to verify sensor health from the control room—eliminating confined-space entries. Over two years, zero failures occurred, and maintenance labor dropped by 70%. Plant managers credited the HONEYWELL 05704-A-0146 with turning a high-risk monitoring point into a “fit-and-forget” asset.
Related Product Combination Solutions
Honeywell ST3000 Series: Advanced smart pressure transmitters—upgrade path for HONEYWELL 05704-A-0146 in Foundation Fieldbus environments
Emerson AMS Suite: Asset management software—fully supports HART diagnostics from HONEYWELL 05704-A-0146
Rockwell CompactLogix: PLC platform—natively interfaces with 4–20 mA signals from HONEYWELL 05704-A-0146
Honeywell UDC3500: Universal digital controller—for local display and alarm using HONEYWELL 05704-A-0146 input
Honeywell 05704-A-0250: Alternate model with 0–250 psi range—same form factor, different calibration
Pepperl+Fuchs HART Multiplexer: Enables multi-drop HART networks with multiple HONEYWELL 05704-A-0146 units
Phoenix Contact MINI Analog Pro: Signal isolator—adds galvanic isolation when interfacing HONEYWELL 05704-A-0146 with sensitive controllers
This ecosystem ensures the HONEYWELL 05704-A-0146 delivers not just data—but actionable, trustworthy insight.
Installation, Maintenance, and Full-Cycle Support
Installing the HONEYWELL 05704-A-0146 requires only a 1/4″ NPT process connection and a 2-wire 4–20 mA loop. For HART communication, ensure loop resistance is 250 Ω minimum. The unit can be mounted directly on machinery or on a DIN rail using optional brackets—ideal for retrofit panels. Magnetic zero/span buttons allow field calibration without opening the housing, preserving IP65 integrity.
Maintenance is minimal: the solid-state design has no moving parts, and the 316L diaphragm resists corrosion from most industrial fluids. Routine checks involve verifying loop current and reviewing HART diagnostic tags (e.g., “Sensor Alert” or “Temperature Out of Range”). If replacement is needed, the standardized form factor ensures drop-in compatibility with legacy systems.
Every HONEYWELL 05704-A-0146 we supply undergoes full pressure calibration across temperature extremes and HART functionality validation. Units include calibration certificates traceable to NIST standards and are backed by a 24-month warranty. Our engineering team provides application review, configuration support, and rapid global delivery—because precise pressure measurement shouldn’t be a point of failure.
