Verification of Oxygen and Pressure Gauges is No Longer a Dilemma — Nexisense Dual-Purpose Calibrator, One Machine Solves Both Oil-Free and General Metrology Needs

Traditional pressure calibration equipment often carries a risk of media contamination when verifying oxygen gauges (oil-free), or requires the preparation of multiple devices for switching, leading to low efficiency and complex operations. The Nexisense Dual-Purpose Oxygen and Pressure Gauge Calibrator utilizes innovative secondary oil-water isolation technology to completely eliminate the risk of cross-contamination. It allows for the precise verification of both general pressure gauges and oil-free oxygen gauges on a single device, significantly enhancing the operational efficiency and safety of metrological verification institutions.

Three Core Selling Points:

• Dual-Purpose, Efficient Switching: Built-in secondary oil-water isolation device allows oil pressure to be easily converted to water pressure, meeting the verification needs of both general pressure gauges and oxygen gauges (oil-free gauges) without additional equipment purchases.

• Excellent Pressure-Holding Stability: Pressure-holding performance far exceeds national standards. After pressurizing to 50MPa and holding for 5 minutes, the pressure drop within 5 minutes is ≤1MPa, ensuring pressure stability and reliable readings during verification.

• Precision Plunger System: Utilizes the same high-precision manual grinding and matching process as piston pressure gauges. The clearance between the piston rod and cylinder is extremely small, achieving true non-relief and zero leakage, significantly superior to traditional grinder processing techniques.

Overview

The Nexisense Dual-Purpose Oxygen and Pressure Gauge Calibrator is suitable for metrological verification institutions at all levels, as well as industrial enterprises in petrochemicals, metallurgy, electric power, and machinery manufacturing. It uses the comparison method to verify general pressure gauges and other oil-free pressure gauges. This calibrator generates pressure by driving a plunger pump with a hand-press lever and is equipped with a secondary oil-water isolation device. Pressure is transmitted through separate oil and water circuits, allowing for both the verification of general pressure gauges and the safe verification of oxygen gauges, achieving true dual-purpose functionality.

The equipment features a rational structural design, simple operation, stable performance, safety, and durability. The third-generation product produced by Nexisense has achieved a qualitative leap in pressure stability and lightness. The built-in secondary oil-water isolation device can conveniently convert oil pressure to water pressure. In a metrology room environment, a single calibrator can complete the verification tasks of both oil-free and general pressure gauges simultaneously, greatly reducing equipment acquisition and maintenance costs while improving the flexibility and safety of field verification work.

Key Advantages

The Nexisense Dual-Purpose Oxygen and Pressure Gauge Calibrator has been systematically optimized in its core components, isolation technology, and overall stability, with a focus on ensuring pressure stability and media safety during the verification process.

1. High-Precision Plunger System Design: The plunger system, consisting of the piston rod and piston cylinder, is the core component determining the calibrator's pressure-holding performance. Traditional processes mostly use alloy steel quenching followed by grinder grinding (accuracy approx. 5μm). Nexisense adopts the same manufacturing process as high-precision piston pressure gauges: after initial grinding on a high-precision grinder, manual precision matching and grinding are performed to ensure an extremely small fit clearance. This process is at a leading level in China, achieving true non-relief and zero leakage, significantly enhancing stability and repeatability during the pressurization process.

2. Secondary Oil-Water Isolation Device: The built-in reliable secondary oil-water isolation structure generates base pressure through the oil circuit, which is then converted into clean water circuit pressure through the isolation device for transmission to the gauge under test. This retains the advantage of oil media being easy to pressurize while meeting the strict requirements of oxygen gauge (oil-free) verification through water media, avoiding oil contamination risks and achieving safe switching.

3. Superior Pressure-Holding and Sealing Performance: Strict strength and sealing tests: first pressurized to 50MPa and held for 5 minutes, then the pressure drop within the next 5 minutes is ≤1MPa. The pressure-holding performance is far superior to relevant national standards. Even during long verification processes, pressure fluctuations are minimal, ensuring accurate and reliable reading comparisons between the standard gauge and the gauge under test.

4. Convenient Operation and Optimized Structure: The hand-press lever design is labor-saving and efficient, with compact dimensions (470×320×298mm), making it easy to move in laboratories or on-site. The working media are clean water and transformer oil, and maintenance is simple. The overall structure is rational, with durable components suitable for long-term, high-frequency use.

These advantages make the Nexisense Dual-Purpose Calibrator a reliable choice for metrological institutions and industrial enterprises for pressure and oxygen gauge verification, helping users reduce equipment investment and improve verification efficiency and data credibility.

Technical Parameters

Applications

The Nexisense Dual-Purpose Oxygen and Pressure Gauge Calibrator is widely used in the following scenarios:

1. Metrological Verification Institutions: Metrology institutes and quality inspection centers at all levels use the comparison method for periodic verification of pressure and oxygen gauges to ensure accurate value transfer.

2. Petrochemical Industry: Verification of various pressure gauges used in production processes and oxygen gauges equipped with oxygen cylinder pressure reducers to ensure process safety and metrological compliance.

3. Metallurgy and Power Enterprises: On-site or laboratory verification of pressure gauges and special oil-free instruments in boilers and pipeline systems.

4. Machinery Manufacturing and Laboratories: Calibration of precision pressure instruments during equipment factory inspection and R&D testing to meet high reliability requirements.

5. Gas Filling Stations and Medical Oxygen Systems: Safe verification of oxygen-related pressure gauges to avoid oil contamination risks.

Wiring and Installation

This calibrator is a manual mechanical device and requires no complex electrical wiring. Installation tips are as follows:

• Place on a stable workbench and ensure it is level.

• Select the corresponding media path (oil or water circuit) according to the type of gauge under test, switching via the isolation device.

• Connect the gauge under test and the standard gauge to the calibrator output ports via dedicated connectors, ensuring reliable sealing.

• When operating, press the lever slowly and evenly to pressurize, avoiding impacts.

• After verification, slowly release the pressure, drain residual media, and wipe the equipment clean.

• After long-term use, periodically check the sealing of the plunger system and the state of the isolation device.

In high-frequency use environments, it is recommended to perform periodic maintenance according to the equipment manual.

FAQ

Q1: Can the Nexisense Dual-Purpose Oxygen and Pressure Gauge Calibrator truly achieve one machine for two purposes?
Yes. Through the built-in secondary oil-water isolation device, oil pressure can be converted to water pressure, allowing for both the verification of general pressure gauges and the safe verification of oil-free oxygen gauges without changing equipment.

Q2: How is the pressure-holding performance? Does it comply with national standards?
The pressure-holding performance far exceeds national standards. After pressurizing to 50MPa and holding for 5 minutes, the pressure drop within 5 minutes is ≤1MPa, ensuring highly stable pressure during verification.

Q3: How is the accuracy of the plunger system guaranteed?
It utilizes the same precision manual grinding and matching process as piston pressure gauges, with further manual matching based on high-precision grinder processing, ensuring extremely low leakage rates and significantly outperforming traditional grinder processing.

Q4: What are the working media? How is contamination avoided during oxygen gauge verification?
The working media are clean water and transformer oil. When verifying oxygen gauges, switch to the water circuit media, which completely avoids oil contamination via the secondary isolation device.

Q5: What is the applicable pressure range?
Two models are available: XY-40S (0~40MPa) and XY-60S (0~60MPa), covering the verification needs of most industrial pressure and oxygen gauges.

Q6: How difficult is the operation? Is it suitable for field use?
Operation is simple, with a labor-saving hand-press lever design. The equipment has a compact structure and moderate weight, making it suitable for metrology rooms and some field verification scenarios.

Summary

With its precision plunger system and secondary oil-water isolation technology at its core, the Nexisense Dual-Purpose Oxygen and Pressure Gauge Calibrator provides a stable, efficient, and safe pressure instrument verification solution for metrological verification institutions and industrial enterprises. It effectively solves the media contamination and multiple-device switching dilemmas of traditional equipment in oil-free gauge verification, significantly improving operational efficiency and economy while ensuring verification accuracy.

Whether for value transfer in the laboratory or instrument maintenance at industrial sites, the Nexisense Dual-Purpose Calibrator can be your reliable metrological assurance tool.

Need specific model recommendations, detailed technical parameter confirmation, on-site demonstration arrangements, or agency cooperation inquiries? Please feel free to contact the Nexisense technical support team. We will provide professional recommendations and complete support based on your specific verification needs and application scenarios. Act now to make your pressure and oxygen gauge metrological verification more stable, safer, and more efficient.