20-L-Apparatus (Siwek - Sphere)
1978 - 2016 manufactured by Adolf Kühner AG, Birsfelden, Switzerland
Determination of explosion characteristics of dust, gas and hybrid mixtures
Explosion indices
For the efficient determination of protective measures, knowledge of the following explosion characteristics is essential.
These explosion indices are determined in accordance with international standards in the 20-l laboratory apparatus:
- • ASTM E1226: Standard Test Method for Explosibility of Dust Clouds
- • ASTM E1515: Standard Test Method for MEC - minimum explosible concentration of combustible dusts
- • EN 14034-1: Determination of the maximum explosion pressure Pmax of dust clouds
- • EN 14034-2: Determination of the maximum rate of explosion pressure rise (dp/dt)max of dust clouds
- • EN 14034-3: Determination of the lower explosion limit LEL of dust clouds
- • EN 14034-4: Determination of the limiting oxygen concentration LOC of dust clouds
- • EN ISO/IEC 80079-20-2: Explosive atmopheres. Material characteristics. Combustible dust methods
New Instrumentation KSEP333+311
Over the almost 5 decades, the instrumentation has always been adapted to the state of the art. The aim has always been full backwards compatibility. Equipment from 1976 onwards can be brought up to date.
Absolute pressure measurementInstead of analog and relative pressure readings for the sphere and pre-chamber, absolute and digital measurements are now used. Errors caused by the barometric ambient pressure are eliminated.
Limiting oxygen concentration (LOC)With precise and absolute pressure measurement in the sphere and pre-chamber, it is possible to produce the desired air/inert gas mixture using the partial pressure method. Only one inert gas cylinder is required. The gas mixtures are created fully automatically. In comparison to the previous partial pressure method, the same mixture is now prepared in the pre-chamber and sphere.
New Software KSEP 8.0
- • Automatic preparation and test run
- • New control variables for quality control
- • Extended data export options
- • Support also for the 1m3 vessel
- • Built-in calibration
Downloads, Updates
Software for Microsoft-Windows 7…11
KSEP 7.1 Setup for KSEP332 (1991 - 2022)- KSEP 8.0 Setup for KSEP333-CAN (starting 2023)
Note: In the laboratory, the software must be suitable for the equipment.
In the office, we recommend the new KSEP 8.0 software, as this can read all older files.
