For the determination of safety characteristics of gases, vapors and dusts different types of ignition sources are used in international standards and guidelines. The paper presents test results of a comparative calorimetric and visual study between four different types of ignition sources. The ignition procedures were analyzed visually with a high-speed camera and electric recordings. In addition to that, the influence of the electrode-orientation, -distance as well as ignition energy on the reproducibility of the exploding wire igniter was tested.

The exploding wire is already in use for standardized determination of safety characteristics of gases, first tests on the suitability of the exploding wire igniter for dust testing have been carried out but are not standardized yet. Using the exploding wire, the ignition energy can be varied from 2 J to 10 000 J (2 x 5000 J) and thus it could be used for gases, vapors, dusts and hybrid mixtures. Moreover it can be used at high initial pressures and it is the only ignition source with an easily measurable ignition energy release. Furthermore, it does not introduce another chemical reaction into the system.

Finally, a proposal for a standard ignition source for explosion tests on hybrid mixtures is derived from the test results.

为了确定气体，蒸气和粉尘的安全特性，国际标准和准则中使用了不同类型的点火源。本文介绍了四种不同类型点火源之间的比较量热法和目视研究的测试结果。用高速照相机和电子记录对点火程序进行了可视化分析。除此之外，还测试了电极方向，距离以及点火能量对爆炸式金属丝点火器可重复性的影响。

爆炸丝已经用于标准化气体安全特性的测定，已经对爆炸丝点火器是否适合进行粉尘测试进行了首次测试，但尚未标准化。使用爆炸线，点火能量可以在2 J到10000 J（2 x 5000 J）之间变化，因此可以用于气体，蒸气，粉尘和混合混合物。此外，它可以在较高的初始压力下使用，并且是唯一可以轻松测量点火能量释放的点火源。此外，它不会在系统中引入其他化学反应。

最后，从测试结果中得出了用于混合燃料爆炸测试的标准点火源的建议。