Nexisense WPAK63 Isolated Diaphragm Pressure Sensor: High-Precision Diffused Silicon OEM Core, Preferred Solution for Industrial System Integration

Nexisense WPAK63: Isolated Diaphragm Pressure Sensor Designed for Harsh Industrial Conditions

In process industries, hydraulic power, level monitoring, and precision instrumentation systems, the long-term stability of the pressure signal and media compatibility are the core elements that determine system reliability and maintenance costs. The Nexisense WPAK63 isolated diaphragm pressure sensor adopts imported high-stability diffused silicon piezoresistive chip, combined with mature 316L stainless steel isolation diaphragm + silicone oil filling process, to create a standard OEM pressure core with a diameter of Φ19mm. This product features extremely high market interchangeability, excellent corrosion resistance, and wide temperature range compensation capability. It is specifically designed for system integrators, IoT solution providers, project general contractors, and engineering companies, providing high-quality and reliable raw pressure signals for various pressure monitoring and control systems.

The isolated diaphragm structure completely physically isolates the sensitive chip from the measured medium, effectively preventing damage to the chip from corrosion, crystallization, particles, and viscous substances, while maintaining high precision, fast response, and low temperature drift characteristics. It is suitable for various integration needs ranging from conventional industrial processes to high-cleanliness biopharmaceuticals, and even extreme environment aerospace applications.

Core Technology and Engineering Advantages of WPAK63

WPAK63 is designed with full consideration of actual pain points in industrial field applications. The core performance indicators are as follows:

• High-precision piezoresistive chip: Imported diffused silicon chip, typical nonlinearity ±0.1%FS, repeatability ±0.05%FS, hysteresis ±0.05%FS, stable zero output, excellent mV-level raw signal linearity.

• 316L stainless steel isolation diaphragm structure: All media-contact surfaces are 316L (optional Hastelloy C-276, tantalum, titanium, etc.), 316L isolation diaphragm + silicone oil filling process ensures long-term resistance to acids, alkalis, salt solutions, corrosive gases, and viscous slurries.

• Wide temperature range compensation performance: Full range temperature compensation from -10℃～+70℃, zero temperature drift ≤±0.015%FS/℃, full-scale temperature drift ≤±0.02%FS/℃, suitable for field environments without temperature control or with large temperature differences.

• Flexible excitation and output: Supports constant current excitation (1.5～2.0 mA) or constant voltage excitation (5～10 VDC), normalized output 70～100 mV@1.5 mA, convenient for secondary amplification or direct access to high-resolution ADC.

• Environmental protection design: Circuit board potting moisture-proof treatment improves reliability in humid, hot, and condensation environments; optional fully welded cavity-free structure further enhances shock and vibration resistance.

These indicators directly translate into system-level value: reduced frequent calibration, lower risk of misjudgment, extended maintenance-free period, and improved overall project economics.

Main Application Scenarios and System Integration Value

Process Industry and Automation Control Systems

Petrochemical, fine chemical, pharmaceutical, food and beverage and other process control fields:

• Used for pressure monitoring and differential pressure measurement in pipelines, reactors, distillation towers, and storage tanks.

• Isolated diaphragm structure effectively handles process media containing solid particles, prone to crystallization, and highly corrosive.

• High repeatability and low drift support high-precision PID closed-loop control and stable process parameters.

Hydraulic and Power Transmission Systems

Hydraulic stations, construction machinery, injection molding machines, wind power pitch systems, etc.:

• Real-time monitoring of pump outlet pressure, actuator working pressure, and accumulator pressure.

• Resistant to hydraulic oil and lubricating oil media, long-term leak-free.

• Fast dynamic response (<1 ms) and anti-vibration design (above 10 g) suitable for mobile and heavy-duty equipment.

Level Measurement and Storage & Transportation Management

Water treatment, chemical storage tanks, oil tanks, ship ballast tanks, groundwater monitoring:

• Bottom hydrostatic level measurement, high precision converted to level height.

• 316L material + isolation diaphragm adapts to sewage, chemicals, crude oil and other media.

• Optional integrated long cable version simplifies on-site installation and wiring.

Biopharmaceutical and Laboratory Instruments

Fermentation tanks, purification systems, blood analyzers, dialysis machines, etc.:

• Meets biocompatibility requirements (optional USP Class VI material certification).

• High precision and low drift support batch process validation and GMP requirements.

• Small-size OEM core facilitates embedding inside medical equipment.

Aerospace and Marine Navigation

Aviation fuel systems, environmental control systems, ship hydraulic and cabin pressure monitoring:

• Passed relevant shock, vibration, and wide temperature tests.

• Low temperature drift and high reliability meet extreme condition requirements.

Selection Guide: Matching Key Project Parameters

To achieve optimal system compatibility, it is recommended to select according to the following parameters:

Comprehensively determine based on project medium composition, installation space, signal interface, certification requirements (such as explosion-proof, sanitary grade), etc.

System Integration Notes and Engineering Practices

• Installation orientation: Isolation diaphragm facing downward or horizontal installation to avoid measurement errors caused by air bubble retention.

• Media compatibility: Confirm compatibility of measured medium with 316L/filling silicone oil; for highly corrosive occasions, select Hastelloy or tantalum diaphragm.

• Signal conditioning: mV output recommended to use instrumentation amplifier (INA128/INA333 etc.) or dedicated pressure transmitter module to achieve 4-20 mA / 0-5 V / 0-10 V standard output.

• EMC and anti-interference: Separate power/signal wiring, add TVS, filter capacitors, reliable grounding of shielding layer.

• Field calibration: It is recommended to perform zero/full-scale verification based on actual working conditions and record temperature compensation curve.

• Redundancy configuration: Safety-critical systems recommend dual-sensor or multi-point monitoring design.

OEM Customization and Bulk Supply Capabilities

Nexisense provides flexible support for B2B customers:

• Customized range, accuracy, interface thread, electrical connection form

• Special isolation diaphragm materials (Hastelloy C-276, tantalum, titanium, etc.)

• Fully welded cavity-free, enhanced strong shock/vibration resistant versions

• Brand labeling, laser engraving, special anti-static packaging

• Factory batch consistency calibration, traceability code management

• Long-term supply framework agreement, inventory buffer and fast delivery

These capabilities help integrators quickly respond to bidding requirements, maintain supply chain continuity, and achieve product differentiation.

Frequently Asked Questions (FAQ)

Q1: How well does WPAK63 support highly corrosive media?
A: Standard 316L isolation diaphragm is suitable for most industrial media; for extremely corrosive media, Hastelloy C-276 or tantalum isolation diaphragm can be customized.

Q2: Does it support absolute pressure and negative pressure measurement?
A: Fully supports gauge pressure, absolute pressure, and negative pressure full series configurations, ranges can be customized according to project requirements.

Q3: What is the temperature drift control level?
A: After full temperature range compensation, zero drift ≤±0.015%FS/℃, full-scale drift ≤±0.02%FS/℃, meeting high-precision industrial requirements.

Q4: How to connect mV output to PLC or data acquisition system?
A: Convert to 4-20 mA / voltage signal through instrumentation amplifier or pressure transmitter module, directly compatible with mainstream industrial acquisition equipment.

Q5: Can it be used for viscous or particle-containing media?
A: Isolation diaphragm + silicone oil filling structure effectively prevents clogging and deposition, suitable for slurry, colloid, suspension and other media.

Q6: What is the vibration and shock resistance capability?
A: Standard product anti-vibration 10 g, anti-shock 50 g, can be customized to military/heavy-duty reinforced versions as needed.

Q7: What supply chain guarantees are available for bulk procurement?
A: Provides batch calibration consistency, inventory reservation, long-term agreement, customized packaging and fast response delivery.

Q8: Long-term stability and expected lifespan?
A: Full stainless steel package + potting protection + mature process, typical trouble-free operation >5～10 years, with extremely low performance degradation.

Summary: Partner with Nexisense to Build a Highly Reliable Industrial Pressure Measurement System

Nexisense WPAK63 isolated diaphragm pressure sensor, with its high-precision diffused silicon core, strong media compatibility, wide temperature low drift, and flexible OEM characteristics, provides a solid pressure data foundation for system integration in process control, hydraulics, level, biopharmaceuticals, aerospace and other fields. Whether for embedded modular design or direct field deployment, this product can help customers significantly improve system reliability, reduce full lifecycle costs, and accelerate project implementation progress.

Welcome system integrators, IoT solution providers, and project engineering companies to contact the Nexisense technical team for complete specification sheets, sample testing support, or customized solutions. We are committed to becoming your stable strategic partner in the field of pressure sensing.