Flow Testing Devices
Reliable testing, flexible application, easy integration.
Our flow testing devices from the LTS 673 and INTEGRA series are ideal for leak, continuity, and material tests for large volumes and medium to coarse leak rates. With mass or volumetric flow measurement, they offer high precision, easy operation, and versatile application possibilities in manufacturing.
INTEGRA DF1/DFM
The classic - also for flow tests
- Flow testing according to the volumetric flow method (INTEGRA DF1)
- Flow testing according to the mass flow method (INTEGRA DFM)
- with fully graphic color display
- Expansion possible through additional test circuits
- allowing up to three independent test circuits to be run
- 255 test programs can be stored
- Communication via flexibly exchangeable bus interface modules
LTS 673
The reliable partner - precise and robust
- Modern microelectronics
- Sophisticated test pneumatics
- Flow testing using the volumetric flow method.
- Various measuring ranges
- 64 test programs
- Password protection
- Digital I/O interface
- Suitable for use in large-scale production
Versatile Application Areas for Flow Testing Devices
Flow testing devices are primarily used for testing leaks in large volumes and with medium to high permissible leak rates. They are particularly applied in the manufacturing of exhaust systems and mufflers or in the production of large-volume sheet metal housings, ensuring reliable leak testing.
Furthermore, our devices are excellently suited for checking continuity or detecting unwanted constrictions in pipes or channels. Thanks to a wide measuring range, they offer maximum flexibility.
Another important field of application is the quality testing of air-permeable materials, such as membranes or filter materials.
Operating Principle
- In the flow method, the test object is first filled via a bypass line with a large cross-section.
- After the filling process, the bypass valve is closed.
- The air escaping from the test object is fed through a flow measurement device.
- After an adjustable stabilization period, the measured flow is evaluated.
Measurement Methods
In a heated measuring channel, the temperature difference of the airflow between the inlet and outlet sides is measured.
The pressure difference in a laminar flow serves as the measured variable and is recorded with a laminar flow element and differential pressure transmitter.