Breather Gas Tank Calibration Machine

product introduction

Breather Gas Tank Calibration Machine is a professional hydrostatic pressure and residual deformation testing system designed for mobile gas tanks.It is widely used by gas tank manufacturers, gas tank inspection stations, and fire departments to carry out mandatory cylinder safety inspections.

The system complies with national safety inspection standards and is especially suitable for high-pressure gas tanks and composite cylinders, ensuring reliable evaluation of cylinder strength and deformation behavior.

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Product Description

In cylinder inspection procedures, hydrostatic pressure testing and residual deformation measurement are the two most critical safety assessments.

According to GB13004-1999 – Periodic Inspection and Evaluation of Steel Seamless Gas Tanks, after hydrostatic pressure testing, the residual deformation of the cylinder must be measured.
If the residual deformation exceeds the specified limit, the cylinder is deemed unqualified, even if it passes the pressure test.

This calibration machine adopts the external testing method, which is the preferred method recommended by national standards and widely accepted internationally.
Compared with internal testing, the external method eliminates the influence of water compression and pipeline deformation, resulting in higher accuracy and easier operation, particularly suitable for carbon fiber wound composite cylinders.

Testing Principle & Method：

Detection Method: External hydrostatic pressure test
Pressurization Mode: Advanced pneumatic-hydraulic pressure system
Measurement Items:Hydrostatic pressure of gas tank，Residual deformation after pressure release

Digital pressure sensors and electronic balances are used to collect pressure and deformation data, enabling real-time monitoring, automatic acquisition, and accurate evaluation.

Item	Specification
Detection Method	External method, pneumatic pressure
Test Pressure Range	0 – 70 MPa
Test Efficiency	10 – 15 cylinders/hour
Working Gas Source Pressure	0.6 – 0.8 MPa
Working Gas Flow	200 L/min
Power Supply	220V / 50Hz
Cylinder Detection Range	≤250 mm diameter, ≤800 mm length
Calibration Pressure Gauge Accuracy	0.4
Pressure Sensor Accuracy	0.25
Electronic Balance Accuracy	0.1 g
Console Dimensions	900 × 700 × 1600 mm
Water Jacket Dimensions	360 × 1000 mm
Test Bottle Size	Ø235 × 840 mm
Applicable Standard	GB9251-1997 Cylinder Hydraulic Pressure Test Method

Key Features & Functions:

External residual deformation measurement with high precision
Advanced pneumatic-hydraulic pressure generation technology
Digital pressure and deformation data acquisition
Real-time display and automatic data recording
Suitable for steel cylinders and composite cylinders
Integrated safety protection and system self-inspection functions

Product Advantages:

High Measurement Accuracy
External method avoids pipeline and water compression errors
Advanced Data Acquisition
LABVIEW software with NI high-speed acquisition cards
Superior Durability
High-pressure valves, pipes, and water jackets made of stainless steel
Operational Efficiency
High test throughput with stable performance
International Technology Reference
Design and performance benchmarked against German equipment