Laboratory expansion tank pressure tester

The Expansion Tank Static Pressure Test Machine is a specialized system designed to evaluate the static pressure performance and leak resistance of automotive expansion tanks. You can adjust the static pressure from 0 up to a maximum of 5 bar, while controlling the flow rate of each sample from 0 to 8 liters per hour. The system includes indirect chamber heating for safety (Explosion Protection Level 1), automatic leak detection, and fail-safe shutdown of defective samples, providing a reliable and efficient solution for expansion tank testing.

Standards

The system supports compliance with major automotive engineering standards:

VW TL889 (4.1) – Volkswagen Group technical specification for interior and related component functional performance.

ESDG93-8A080-AA (3.6) – Ford engineering specification for component functionality and reliability.

GMW15310 (3.2.1.2) – General Motors global standard for material and component performance testing.

QV17004D (3.2.6) – BMW group specification for system component functionality and durability.

Parameters

Parameter Category	Details
Test Bench Dimensions	2200 × 2240 × 1550 mm (W × H × D)
Chamber Dimensions	1000 × 800 × 1000 mm (W × H × D)
Rated Power	9.5 kW
Test Medium	Glycol/Water
Pressure Range	0 … 5 bar
Flow Rate per Sample	0 … 8 l/h
Pressure Type	Static
Test Medium Temperature Range	25 … +150°C
Environmental Temperature Range	25 … +150°C
Test Channels	6

Accessories

Indirectly heated test chamber

Flow control units for each sample

Leak detection sensors and safety interlocks

Liquid level monitoring and control system

Control unit with Windows/LabVIEW interface (optional for data logging)

Sample mounting brackets for expansion tanks

Test Procedures

Ensure the test area is clear and safe for operation.

Connect the system to the 9.5 kW power supply.

Fill the chamber and sample lines with glycol/water mixture.

Mount expansion tank samples in the test chamber.

Set the static pressure (0–5 bar) and flow rate (0–8 l/h) for each sample.

Activate the test system and indirect heating if required.

Monitor pressure, flow, and leak detection sensors throughout the test.

Automatically shut down any failed samples.

Record all test results for quality control or validation purposes.

After testing, safely drain the medium and allow the system to cool before removing samples.

Maintenance Information

Inspect sample mounting brackets, pressure sensors, and leak detection units before each test.

Verify flow control devices and chamber seals for proper operation.

Periodically calibrate pressure sensors and temperature controllers.

Clean the chamber and fluid circuits to prevent contamination.

Replace worn or defective components to maintain safe and accurate operation.

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