Nexisense Main-Auxiliary Integrated Piston Pressure Gauge: High-Precision Piston Pressure Gauge Verification and Pressure Metrology Traceability Core Equipment

In the construction of pressure metrology traceability system and quality control of industrial process control instruments, the main-auxiliary integrated piston pressure gauge, as the core reference equipment, has become the standard configuration for metrology technical institutions at all levels, pressure instrument manufacturing enterprises and pressure calibration laboratories of large engineering projects. The equipment adopts a main-auxiliary integrated design, which can install the standard piston head and the tested piston head at the same time. Through standard verification methods such as the initial balance method, it accurately determines the effective area of the tested piston system, and combines high-precision displacement measurement to complete the drop amount test, providing reliable technical support for the value transfer of pressure parameters.

The nominal range of Nexisense main-auxiliary integrated piston pressure gauge covers four range segments: **0.04~0.6 MPa, 0.1~6 MPa, 1~60 MPa and 2~100 MPa**. The accuracy grade can be selected as **0.005 grade (±0.005%), 0.01 grade, 0.02 grade and 0.05 grade**, fully meeting the requirements of JJG59-2007 "Verification Regulation for Piston Pressure Gauges" and JJG99-2006 "Weights" national metrology verification regulations. It provides a reliable and traceable basis to the national standard for periodic verification and factory verification of pressure transmitters, precision pressure gauges, digital pressure gauges and differential pressure transmitters.

Core Technical Highlights: Reliable Guarantee for Professional Metrology and Engineering Applications

Nexisense main-auxiliary integrated piston pressure gauge has undergone multiple targeted optimizations in structure and performance:

• Tungsten carbide integrated protection structure: The piston rod and protection shaft are integrally formed with tungsten carbide material, with a **protection shaft diameter of 10 mm**, effectively preventing piston system damage caused by accidental collision or overload during use (this protection solution is independently developed by the company and is applying for an invention patent).

• Low center of gravity stable design: The center of gravity of the whole machine is lowered, making the piston system run more smoothly and significantly reducing the impact of external vibration on measurement results.

• External displacement proximity sensor: Real-time display of piston system position changes, with intuitive and clear digital tube display, **measurement range 0~3 mm**. The sensor adopts non-embedded installation, which does not affect the piston protection structure and ensures long-term reliability.

• All-round sewage system: Special oil drain pipelines are set below the piston system and output interface, allowing oil to flow directly back to the oil cup, achieving an oil-free and clean table surface, far superior to traditional single oil drain design.

• Self-sealing piston cylinder system: The sealing ring has been optimized to ensure **30,000 cycles of pressurization without leakage**, greatly reducing maintenance frequency.

• Pre-pressurization device: Makes pressurization operation more labor-saving and efficient, suitable for high-intensity verification scenarios.

These technical features enable Nexisense main-auxiliary integrated piston pressure gauge to perform excellently in metrology traceability, instrument production quality control and pressure standard establishment in engineering sites.

Typical Application Scenarios: Full Coverage Support from Laboratory to Industrial Site

1. Metrology technical institutions and calibration laboratories
   Used for initial verification, subsequent verification and in-use inspection of piston pressure gauges. The effective area of the tested piston is accurately calculated through the initial balance method, and comprehensive performance evaluation is completed in combination with 0~3 mm displacement data to establish a complete pressure value transfer chain.

2. Pressure instrument manufacturing enterprises
   As key quality control equipment on the production line, it performs traceable calibration on batch-produced pressure transmitters, precision pressure gauges and digital pressure gauges to ensure product factory consistency and metrological characteristics meet national standards.

3. Petrochemical, power, metallurgy and water treatment engineering projects
   The pressure instrument maintenance team of engineering projects can use this equipment to establish on-site pressure standards, quickly complete periodic verification of differential pressure transmitters, pressure sensors and online instruments, and support data accuracy verification of DCS/SCADA systems, reducing process risks caused by pressure measurement deviations.

4. System integration and automation calibration workstations
   The main-auxiliary integrated design facilitates integration into semi-automatic or fully automatic pressure metrology workstations, realizing batch verification processes and improving project delivery efficiency and data traceability.

Selection Guide: How to Match the Optimal Configuration for the Project

To ensure long-term stable operation of the equipment, it is recommended that purchasers focus on the following factors when selecting:

• Range selection: Select the appropriate range interval according to the maximum working pressure of the tested instrument. It is recommended that the working pressure be within 30%~80% of the range to obtain the best stability and service life.

• Accuracy grade: For metrology reference or high-precision calibration needs, **0.005 grade or 0.01 grade** is recommended; for conventional process control instrument verification, **0.02 grade or 0.05 grade** can be selected.

• Function configuration: Scenarios requiring real-time monitoring of piston position must choose the external displacement sensor version; high-frequency use is recommended to be equipped with pre-pressurization device and intelligent digital display system.

• Environmental adaptability: Evaluate on-site temperature, vibration and cleanliness requirements, and select the corresponding protection grade and sealing materials.

• Integration requirements: If integration into an automation calibration system is required, priority can be given to customized versions that support digital output or reserved communication interfaces.

Nexisense provides professional selection manuals and technical support, and can recommend the optimal configuration scheme according to the specific working conditions of the project.

System Integration and Installation Precautions

To ensure efficient operation of the equipment in actual projects, the following key points should be noted during integration and installation:

• The installation foundation must be level and stable to avoid direct transmission of external vibration to the piston system.

• High and low pressure side connections must be carried out strictly in accordance with operating procedures. Special attention should be paid to the layout of pressure guiding tubes and exhaust/drain operations during differential pressure verification.

• It is recommended to use shielded cables for electrical connections, strictly comply with EMC specifications, and avoid laying parallel to strong current lines.

• Regularly check the smoothness of the oil drain pipeline, keep the table surface clean, and extend the service life of the equipment.

• For automation integration projects, data acquisition and remote monitoring can be realized with the host computer or PLC system through reserved interfaces.

Nexisense provides complete installation guidance manuals, operating procedures and common fault handling solutions to help users quickly put the equipment into use.

OEM/ODM Customization and Bulk Supply Advantages

As a professional industrial metrology equipment manufacturer, Nexisense supports full-series OEM/ODM customization services for the main-auxiliary integrated piston pressure gauge, including:

• Personalized customization of range, accuracy grade, display mode and process connection method;

• Special medium adaptability materials and secondary development of communication interfaces;

• Bulk label printing, exclusive packaging and serial number management to meet the collective procurement needs of engineering projects;

• Framework agreement customers can enjoy stable delivery time, price locking and priority production scheduling services.

Standard delivery time is stable, and urgent orders can be flexibly compressed. Product quality control covers raw material batch traceability, 100% factory testing and strict environmental adaptability verification to ensure that each device meets the long-term operation requirements of industrial sites.

FAQ

Q1: Compared with traditional split-type piston pressure gauges, what are the main advantages of the main-auxiliary integrated piston pressure gauge?

A: The main-auxiliary integrated design allows the standard piston head and the tested piston head to be installed at the same time, completing the verification in one clamping, greatly shortening the verification cycle and reducing human switching errors. At the same time, the tungsten carbide integrated protection structure (protection shaft diameter 10 mm) significantly improves the safety of equipment use.

Q2: How to accurately determine the effective area of the tested piston through this equipment?

A: Using standard verification methods such as the initial balance method, the standard piston head and the tested piston head are installed at the same time. The effective area of the tested piston system is calculated through precise balance, and comprehensive performance evaluation is completed in combination with 0~3 mm displacement sensor data.

Q3: Will the external displacement sensor affect the piston protection structure?

A: It adopts a non-embedded installation design, which does not affect the tungsten carbide protection shaft structure. It can monitor the piston position change in real time without reducing the protection performance, with a displacement measurement range of 0~3 mm.

Q4: How to ensure long-term stability of the equipment during high-frequency use?

A: Tungsten carbide precision grinding, self-sealing piston cylinder system (30,000 cycles without leakage) and all-round sewage design jointly ensure the long-term stability of the equipment under high-intensity use.

Q5: What OEM customization content is supported during bulk procurement?

A: Supports customized development of range, accuracy, process connection, display mode, communication interface and appearance identification, and provides exclusive label, packaging and serial number management services.

Q6: What key matters need special attention during the installation process?

A: The foundation must be level and stable, operations must strictly follow the high and low pressure side connection procedures, sufficient exhaust/drainage must be performed after installation to ensure no gas accumulation in the pressure guiding tube, and the smoothness of the oil drain pipeline should be checked regularly.

Q7: Does this equipment comply with national metrology verification regulations? What kind of certificate can be issued?

A: It fully complies with JJG59-2007 "Verification Regulation for Piston Pressure Gauges" and JJG99-2006 "Weights" requirements, and can issue verification certificates that meet national metrology standards.

Q8: How to integrate this equipment into an automation calibration workstation?

A: The equipment reserves standard interfaces, which can realize data acquisition and remote monitoring through host computer software or PLC system, supporting semi-automatic or fully automatic calibration processes and significantly improving project delivery efficiency.

Summary

Nexisense main-auxiliary integrated piston pressure gauge provides high-precision and high-reliability piston pressure gauge verification solutions for metrology institutions, pressure instrument manufacturers and industrial engineering projects with its tungsten carbide integrated protection structure, external displacement measurement system (0~3 mm) and all-round sewage design. In the construction of pressure metrology traceability system and quality control of process control instruments, choosing a main-auxiliary integrated piston pressure gauge with mature technology and reliable structure can effectively improve verification efficiency, reduce operation and maintenance costs, and provide a solid technical guarantee for the long-term stable operation of the system.

System integrators, metrology laboratory directors or pressure instrument manufacturers who need detailed technical information, selection suggestions, prototype testing or bulk customization solutions are welcome to contact the Nexisense technical support team at any time. We will provide professional technical support and implementation assistance according to your specific project needs to jointly promote the efficient development of metrology work and engineering projects.