【Equipment introduction】
Brake Hose Air Tightness Testing Machine is used for the air tightness and length change rate test of pneumatic brake hoses, it has a simple structure and stable performance, adopts automatic pressure control and automatic timing, and automatically stops the test after reaching the set pressure and time, Brake Hose Air Tightness Testing Machine is the preferred measuring system for detecting hoses. The air tightness and length change rate of the brake hose in GB16897 are only required to be determined in the pneumatic brake hose.
【Applicable standards】
GB16897-2010 Brake hose―Structure,performance and test methods 6.3.2 Airtight test; 6.3.3 Length change rate
【Technical parameters】
System pressure (Hydraulic): 0-2.5MPa (Accuracy ≤ ± 1% FS)
System pressure (Air pressure): 0-2MPa (Accuracy ≤ ± 1% FS)
Test channel: 2 channels (Air tightness, length change rate)
Timing range: 0-9999min
System pipeline: All stainless steel pipeline connection
Control mode: Automatic pressurization, pressure control, automatic timing, automatically counts after pressurizing to the set pressure, automatically stops the test after reaching the set time.
Test piece connection form: Quick plug connection method
Overall dimension: 0.75m（L）×0.75m（W）×1.65m（H）
Air tightness: One end of hose is closed, the other end is filled with air to 1.4 MPa, cut off the gas source, immerse in water and hold pressure for 5 minutes, observe whether there are bubbles or local expansion.
Length change rate: Water injection pressurize 0.1MPa, scribe line 300mm, pressurize 1.4 MPa, hold pressure for 5 min and measure again, calculate the length change rate.
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