20L Siwek Sphere / Mike 3

MIKE 3, 20L SIWEK BALL, SIPCON AND SIPPOWER ARE MANUFACTURED IN COLLABORATION WITH the CESANA AG

TÜV SÜD Schweiz AG is responsible for the production, distribution, training and support of these instruments.

Cesana AG will be responsible for software, technical development and organization of the traditional calibration round robin tests CaRo.

Since the beginning of 2017, MIKE3, 20L Siwek sphere, Sipcon and Sippower are distributed together with the Cesana AG. Formerly, these devices were supplied by the Kühner AG in Birsfelden.

20 LITER SIWEK

Determination of explosion indices of dust, gas and hybrid mixtures

For the efficient prevention of dust explosions by preventive explosion protection (e.g. explosion venting, explosion suppression) it is necessary to know the optimum explosion indices:

• the dust explosibility
• the lower explosibility limit (LEL)
• the maximum explosion pressure (Pmax)
• the dust-specific characteristic (Kmax)
• the limiting oxygen concentration (LOC)

These characteristics, especially those that describe the explosion behavior of combustible dusts, can be determined accordingly to a standard procedure in the 20-L laboratory apparatus:

• ASTM E1226: Standard Test Method for Explosibility of Dust Clouds
• STM 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

Mike 3

Apparatus for determining the minimum ignition energy of dust/air-mixtures

For an assessment of the hazard situation in dust-processing installations, the knowledge of the minimum ignition energy is indispensable. This value can possibly determine the extent and hence the cost of protective measures. The minimum ignition energy (MIE) is the lowest energy value of a high-voltage capacitor discharge required to ignite the most ignitable dust/air mixture.

This characteristic can be determined according to international standards:

• EN 13821: determination of minimum ignition energy of dust/air mixtures
  
• ASTM E 2019: Standard Test Method for Minimum Ignition Energy of a Dust Cloud in Air
  
• EC 61241-2-3: replaced by ISO/IEC 80079-20-2:2016
  
• ISO/IEC 80079-20-2:2016: Explosive Atmospheres - Material Characteristics - Combustible Dusts Test Methods

sipcon

Data acquisition- and control system

Up to four different test equipments can be run simultaneously while recording the respective temperatures of the substance. For processing and storing, data are transmitted to a standard personal computer. Results can be displayed and printed numerically and graphically.

The software on the personal computer contains a wealth of functions to evaluate the test results. When switching it off, Sipcon continues on its own. Sipcon itself contains no manual control elements and is intended to be operated right beside the test apparatus, the sensors being directly connected to it. Up to 6 Sipcon units running up to 12 test apparatus may be connected to a personal computer by means of a simple network.

For more details, please contact us at any time.