AILEIKE ALKT702G Barometric Calibration Bench Technical White Paper

AILEIKE ALKT702G Barometric Calibration Bench

Technical White Paper

Product Overview and Technical Background

The AILEIKE ALKT702G Barometric Calibration Bench is a precision instrument specifically designed for the calibration and verification of pressure instruments, primarily intended for use in laboratory environments or field applications. As a professional tool in the field of pressure measurement and calibration, the ALKT702G pneumatic calibration bench is designed to provide high-precision calibration services for pressure gauges, pressure transmitters, pressure sensors, pressure switches, and other pressure instruments, ensuring the measurement accuracy and reliability of these devices.

Technical Specifications and Performance Metrics

2.1 Basic Technical Specifications

2.2 Key Performance Features

Positive/Negative Pressure Switching Function: Enables easy switching between positive and negative pressure, meeting the calibration requirements of various types of pressure instruments and expanding the device’s range of applications.

Quick-Connect Fittings: Featuring an internal threaded quick-connect design, these fittings enable rapid installation and removal of pressure instruments, significantly improving work efficiency. This design also ensures reliable sealing and connection integrity.

High-Precision Pressure Control: Equipped with high-precision fine-tuning mechanisms and pressure-stabilizing valves, the system achieves a minimum pressure adjustment resolution of 10 Pa, ensuring precise pressure control.

Simple and Effortless Operation: The product features a rational structural design and intuitive operating procedures, significantly reducing the workload on operators and improving work efficiency.

Smooth Pressure Rise and Fall: Utilizing high-quality pressure generation components, supplemented by carefully designed fine-tuning mechanisms, quick-connect fittings, and relief valves, the system ensures a smooth pressure transition process, preventing sudden pressure changes from affecting the instruments under calibration.

Main Application Areas

Thanks to its high precision, stability, and versatility, the ALKT702G Pneumatic Calibration Bench is widely used across multiple sectors:

Metrology and Testing Institutions: Serves as a standard pressure source for the calibration and verification of pressure measuring instruments, ensuring the accuracy and consistency of measurement traceability.

Instrument Manufacturing: Used for product quality inspection and calibration during the manufacturing of pressure instruments, ensuring product quality meets standard requirements.

Petrochemical Industry: Used for the calibration and testing of pressure instruments in the petrochemical sector to ensure production process safety and efficiency.

Industrial and Mining Enterprises: Used for the calibration and maintenance of internal pressure measurement and control equipment to ensure production process safety and stable product quality.

Education Sector: Used as teaching equipment for instruction and training in pressure measurement and calibration techniques to cultivate professionals in related fields.

Research Institutes: Provides a precise and controllable pressure environment for scientific research experiments, supporting various pressure-related scientific studies and experimental work.

Operation and Maintenance Guide

Operating Procedure

Positive Pressure Testing

Unscrew the plug from the outlet connector, set the fine-tuning knob to the appropriate position (middle position), press the selector switch in, connect the standard gauge and the gauge under test, and close the vent valve. When the pressure reaches approximately 3.5 MPa using the operating lever, close the pressure-stabilizing valve. Use the fine-tuning knob to adjust the pressure to approximately 10.5 MPa, allow it to stabilize for 1–2 minutes, and then use the fine-tuning knob to adjust to the calibration point. After the test is complete and the pressure has been released, the test gauge and standard gauge may be removed.

Vacuum Testing

Unscrew the plug from the outlet connector, set the fine-tuning knob to the appropriate position (center position), pull out the selector switch, connect the standard gauge and the gauge under test, and close the vent valve. Operate the lever to create a vacuum; when the pressure reaches approximately -0.1 MPa, allow it to stabilize for 1–2 minutes. Use the fine-tuning knob to adjust to the calibration point, and test point by point down to zero.

Precautions

Place the calibration bench on a flat, easily accessible surface and avoid using it in environments containing highly corrosive gases or dust particles. The instrument under test should be properly cleaned to prevent contaminants from entering the test circuit.            

The outlet connector is a dedicated quick-connect fitting. When installing the instrument using a face seal, no tools are required. Tighten evenly by hand; once the sealing surfaces are in contact, tighten an additional 1–2 turns.

The outlet connector consists of two parts (upper and lower). During use, frequently check whether the lower locking screw is securely fastened. If the connection is unreliable, it may come loose under high pressure.

When the lever feels heavy to operate, use the fine-tuning pressure adjustment for easier operation.

Structure and Function

Conclusion

Designed with an open architecture and incorporating ergonomic principles, this product meets professional metrology requirements while ensuring operational convenience. It is a barometric calibration device that combines high precision, reliability, and ease of use. The ALKT702G barometric calibration bench is designed with the practical needs of modern industrial metrology in mind and is capable of performing pressure calibration tasks in a wide range of complex environments.