Pressure Chamber Laboratory

Contact person: Dr.-Ing. Peter Kampmann

In our Pressure Chamber Lab we perform various types of tests, for example material tests. In the following video you can see the functionality and a test set-up. The Pressure Chamber can generate a maximum pressure of 660 bar which corresponds to 6600 m water depth.

Field of application

How do materials react to high ambient pressure? How does the behavior of sensors and actuators changein deep-sea? Do sealings withstand the high pressure? These and more questions are investigated in the pressure chamber lab of the DFKI Robotics Innovation Center.

The physical properties of materials and fluids are completely different in deep-sea compared to the oneswe experience on land. Oils for example change their viscosity and solid materials start to flow. Pressure chambers are built in order to explore these phenomena. These devices allow us to generatethe ambient pressure conditions like they exist in deep-sea. An increase of one bar corresponds to anincrease in depth of 10 meters. We can generate ambient pressure of up to 660 bar in our pressurechamber which means a depth of roughly 6,600 meters. This pressure range has not been chosen randomly. Withthis depth we qualify our tested objects and materials for 95% of the seabed of the earth.

Test set-up

view on a test set-up
view on a test set-up

In order to run our experiments, we fill the pressure hull with roughly 80 liters of water. The water is compressed under by a pump which leads to an increase of pressure within the chamber. Through 48 electriclanes with a maximum current transmission of 8 amps we can directly control our electronic components in the chamber during an experiment. This possibility together with a inspection glass at the top of the chamberthat allows for visual live monitoring of the experiments makes our pressure chamber unique.

Technical Data

In the following you can read about the technical details of the pressure chamber equipment and measurement setup.

Pressure Tank:

Volume: 75 l
Maximum pressure:660 bar (corresponds to 6600 m water depth)
Dimensions:

Inner diameter: 40 cm
Usable depth: 60 cm

Pressure Generation:

Screw compressor RSD-Compact
Pressure range:4.0 - 10.0 bar
Actual power output:4 kW
Delivery quantity:0.44 qm/min


High pressure plunger pump Resato Type P160
Max. output ratio:1:13
Generated output pressure:790 bar
Flow:4,5 l/min

Data Interfaces:

Elektrical connectors:36, max. current 8 A
(via 3 x GISMA Br 10 Series Connectors)
Hydraulic connectors:2,3 / 8" winding
Inspection glasses:2 in the top
1 x 55 mm diameter
1 x 30 mm diameter

Basic Measurement Setup:

Camera:

Prosilica GE1900C
Frame-rate 30 fps
Resolution: 1920 x 1080 (HDTV)
CCD Chip Size: 1"

Pressure Transducer:WIKA Eco-1
Measurement range: up to 1000 bar
National Instruments data acquisition device
© DFKI GmbH
last updated 01.11.2016
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