Honeywell 05701-A-0361

Description

Product Category
Electronic Pressure Transducer / Industrial Pressure Sensor

Key Functions

• Pressure-to-Current Conversion — Outputs a 4–20 mA signal proportional to measured pressure
• Pressure-to-Voltage Conversion — Outputs a 0.5–4.5 VDC signal proportional to measured pressure (selectable)
• Absolute Pressure Measurement — Measures pressure relative to absolute vacuum reference
• Gauge Pressure Measurement — Measures pressure relative to atmospheric pressure (variant dependent)
• Overpressure Protection — Internal mechanical stop prevents sensor damage beyond rated pressure
• Zero and Span Adjustment — Field-adjustable via external potentiometer or digital command
• Temperature Compensation — Built-in temperature compensation circuit maintains accuracy across full temperature range
• Reverse Polarity Protection — Internal circuit protects against accidental reverse power connection

Technical Specifications

Performance Parameters

Material Composition

Structural Features

• Compact cylindrical design with 1/4-28 NPT male pressure port
• Hermetically sealed internal cavity for moisture and contamination protection
• Integral shielded cable with flying leads for flexible field wiring
• Laser-welded diaphragm for zero leakage and high burst pressure
• Gold-plated brass pins on flying lead connector for corrosion resistance
• Epoxy-potted internal electronics for vibration and shock resistance
• No external adjustments required — zero and span are factory-calibrated
• IP67 rated when cable gland is properly installed

Working Principle

The 05701-A-0361 uses a silicon piezoresistive sensing element bonded to a ceramic diaphragm. When pressure is applied to the diaphragm, the silicon strain gauges experience mechanical deformation, causing a change in electrical resistance. This resistance change is detected by a Wheatstone bridge circuit integrated on the ceramic substrate. The bridge output is a millivolt-level signal proportional to applied pressure. An on-board signal conditioning ASIC amplifies the bridge output, applies temperature compensation, linearizes the signal, and converts it to a 4–20 mA current loop output or 0.5–4.5 VDC voltage output. The ASIC also provides reverse polarity protection, overvoltage protection, and EMC filtering.

Advantages and Highlights

• High Accuracy — ±0.25% of full scale accuracy exceeds most competing industrial pressure sensors
• Low Hysteresis — ±0.10% of full scale ensures repeatable measurements in cycling applications
• Fast Response — Less than 2 ms response time suitable for dynamic pressure monitoring
• Wide Temperature Range — -40°C to +125°C operation without external compensation
• Hermetically Sealed — Epoxy-potted internal electronics provide IP67 protection
• Long-Term Stability — ±0.10% per year drift ensures minimal recalibration frequency
• Burst Pressure 4x Rated — 1444 psi (9960 kPa) burst rating provides excellent overpressure protection
• Low Power Consumption — Less than 25 mA supply current for loop-powered installations
• No Moving Parts — Solid-state design eliminates mechanical wear and fatigue
• Field Proven — Over 20 years of service in industrial, aerospace, and automotive applications

Applicable Industries

• Oil and Gas — Wellhead pressure monitoring, pipeline pressure measurement, downstream processing
• Chemical Processing — Reactor pressure monitoring, tank level measurement via pressure, filter differential pressure
• Power Generation — Boiler drum pressure, steam header pressure, condenser vacuum monitoring
• HVAC and Refrigeration — Compressor discharge pressure, evaporator pressure, condenser pressure
• Hydraulic Systems — Cylinder pressure monitoring, pump discharge pressure, accumulator pressure
• Aerospace and Defense — Aircraft hydraulic pressure, engine fuel pressure, environmental control systems
• Automotive Testing — Engine cylinder pressure, turbocharger boost pressure, fuel rail pressure
• Medical Equipment — Ventilator pressure monitoring, anesthesia machine pressure sensing
• Food and Beverage — Process pressure monitoring in CIP (Clean-In-Place) systems
• Water and Wastewater — Pump discharge pressure, filter differential pressure, tank level

Model Series Cross-Reference

Compatible Systems and Controllers

Certifications and Compliance

Part Number Breakdown

Installation Requirements

• Mount the sensor in a vertical orientation with the pressure port facing upward for gas service or downward for liquid service
• Use a 1/4-28 NPT male fitting on the process connection (use appropriate adapter for other thread sizes)
• Install a cable gland (PG7 or PG9) to achieve IP67 rating
• Route the cable away from high-voltage power cables (minimum 150 mm separation)
• Use shielded twisted-pair cable for signal wiring (minimum 24 AWG)
• Ground the cable shield at the controller end only (single-point grounding)
• Do not exceed the maximum supply voltage of 36 VDC
• Do not apply pressure exceeding 361 psi (2490 kPa) continuously
• Torque the pressure port fitting to 18 Nm (13.3 ft-lbs) maximum
• Allow the sensor to warm up for 5 seconds before taking measurements

Usage Precautions

• Do not exceed the rated pressure of 361 psi (2490 kPa) — permanent damage to the diaphragm will occur
• Do not apply pressure spikes exceeding 4x rated pressure (1444 psi) repeatedly — this will reduce sensor life
• Do not expose the sensor to corrosive media (strong acids, strong bases, HF) without a chemical isolation diaphragm
• Do not subject the sensor to temperatures exceeding +125°C — internal electronics will degrade
• Do not reverse the power supply polarity — internal protection fuse will open (replace with 500 mA fast-blow fuse)
• Do not drop the sensor from a height exceeding 1 meter — internal wire bonds will fracture
• Do not disassemble the sensor — no user-serviceable components are present
• Perform a zero calibration check every 12 months in critical applications
• Replace the sensor if output drift exceeds ±0.5% of full scale
• Store the sensor in a dry environment with relative humidity below 85%
• Do not use the sensor in oxygen-enriched atmospheres without Honeywell approval

Warranty

• Standard Warranty: 24 months from date of shipment
• Extended Warranty: Available up to 60 months (Honeywell Sentinel program)
• Warranty Exclusions: Damage caused by overpressure, corrosion, physical impact, unauthorized disassembly, or operation outside specified limits

Document Reference Numbers