New Spark Test Apparatus

The spark test apparatus can be used to inspect whether there are any sparks with sufficient energy within a given circuit to ignite the surrounding explosive environment present. This test is intended to analyse whether, during operation, the tested equipment has the capacity to cause any sparks or arcing that would – under the given conditions – set off an explosion of the standard-specified gas mixture inside the given chamber.

The apparatus includes an integrated gas mixer, which generates the gas compound necessary for testing and calibration subject to high accuracy. The actual measurement process is supplemented with the post-test ventilation of the chamber, intended to extract the unnecessary combustion products.

Every element required for the device to operate is combined in a single compact apparatus. Two conditions must be met for the unit to operate: The appropriate inflow and extraction of the gas mixture required for the test, and energizing the apparatus.
The unit that produces the test gas mixture is connected to the spark test apparatus as a module, so that it can be inserted and removed.

The measurement process is initiated at the press of a single button, and the unit runs the test, evaluates the generated results, and continues to next steps – e.g. conducts a calibration check – according to those, all in automatic mode. The calibration unit generates calibration currents per safety factors 1.0 and 1.5.

The 60079 series standards cover the protection of equipment used in potentially explosive atmospheres and include the precise specifications for their design.

Technical parameters

  • Computer-aided automatic operation
  • Control MMI: keyboard, mouse
  • Gas connections: FESTO Ø 8mm and Ø 10mm
  • Input pressure: Gas – 1bar
  • Air – 1bar
  • Gas mixture accuracy: 1–99% by vol., ± 0.1% by vol.
  • Power connection: 230VAC 50Hz

Input electrical parameters

  • Input resistance
  • Input inductivity
  • Input capacitance
  • Breakdown voltage

Certified against the IEC 60079-11 standard.

Download datasheet


  • We are completely satisfied with the work of the ExVA team. We carry out several joint works with them and they have always been willing and helpful in responding to our inquiries. The work is always done on time and with professional precision. They are immediately available for any questions that may arise and will be answered constructively.

    Ádám Vasvári – Managing director, ABP-Corp. Kft.
  • ExVA Ltd. have been an excellent support in the explosion proof certification process of our BlueEye™ Ex-D combustible gas analyzer. Nagy and his team have supported us with solutions to the technical challenges rather then just pointing out what isn`t possible. All this in a very efficient way, allowing us short time to market whilst avoiding unnecessary cost. We can highly recommend to use ExVA`s services.

    Bart Riemens – CEO, Bright Sensors SA
  • Throughout the many years of our cooperation with ExVA, we have always been impressed with the unusually high level of preparedness among their personnel. They have been happy to help us in the certification process of all our products.

    Miklós Kovács – CEO, Szerver Szektor Kft.
  • We have worked with ExVA Kft. and their predecessor (BKI) since 1992. Over the past nearly 30 years, they have completed several dozen type-test certifications for us. They provide high-standard professional support for the design phase of the equipment our Company manufactures for use in potentially explosive environments and for conducting their testing according to the requirements of the latest EU Directive, as well as for the proper functioning of our production quality assurance.

    Levente Földi, Head of Technical, Földfém Gépgyártó és Javító Kft.
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