The new generation of fire gas detectors
GSME fire gas detectors are the spearhead of the Advanced Discovery System. They can already detect open and hidden smoldering fires within their initial phase. The new generation of the GSME-M4 comprises four parameterisable semiconductor gas sensors that are used for monitoring and evaluating the concentration and behaviour of fire-indicating gases by applying the multi-criteria method. Their robust design protects them against damage due to dust, dirt, and moisture.
The GSME also finds its application in potentially explosive atmospheres. GSME-X22 and GSME-X20 are approved for the ATEX zone 22, respectively 20 to 22 and are factory fitted with permanently installed spray protection. The GSME-X20 is also available as an extended version for the ATEX zone 2.
By means of the multi-criteria evaluation, any interference caused by the natural outgassing of conveyed materials or exhaust gas from mine trucks can intentionally be suppressed. For this purpose, an emission spectrum is first recorded during the commissioning. This incorporates the usual on-site exhaust pollution in the evaluation process of the internal detector measurements. A service PC provides the possibility to call up sensor data of each detector via the ADICOS M-bus using the PC software ADICOS Manager and to display it separately. It is also possible to specify the parameters at any time.
Considering the air flow conditions, GSMEs can be used in nearly all internal plant area. For instance, they are outstandingly suitable for use along cased conveyor belt lines, within storage bunkers, or in the head area of silos.
Due to the innovative sinter metal filter technology, the GSME-M4 detec-tors are protected against the penetration of dusts and dirt. The gases to be detected, on the other hand, diffuse unimpeded through the filter barrier. GSME-M4 detectors are generally equipped with an integrated device heating feature that can be swit-ched on to prevent condensation. For enhanced moisture protection of the GSME-M4, the retrofittable GSME spray protection made of stainless steel is available.
Gasdetektion in explosionsgefährdeten Bereichen
The detectors of the GSME product line are also available as variants which are either approved by the manufacturer‘s declaration for use in atmospheres subject to gas or dust explosions or certified in accordance with the ATEX directive and IECEx. Their robust design and small size make the detectors ideal for use in difficult assembly environments.
In many industrial plants, specific areas are sub-ject to the ATEX directive 1999/92/EC. With-in these areas where there is a risk of explo-sion, electrical devices are only allowed to be operated with the respective approval. This also applies to fire alarm systems. For this reason, GTE also offers the GSME detectors as a type-tested variant, as per ATEX directive 2014/34/EU and IECEx. The GSME-X20 offers the same functionality as a standard GSME-M4, however it is approved for use in the potentially explosive dust atmospheres of zones 20 to 22. Furthermore, a variant of the detector is available, which additionally allows use in ATEX Zone 2.
We are offering the fire gas detector GSME-X22 as an economic compromise solution between the GSME-M4 without explosion protection approval and the type-tested GSME-X20. On the basis of a self-test, together with the manufacturer’s decla-ration, this detector is approved in the potentially explosive dust atmospheres of zone 22. GSME-X22 is factory fitted with permanently installed spray protection.
Monitoring of transported material
In potentially explosive atmospheres, such as in storage bunkers or in the headspace of silos, the GSME detectors can be used in almost any indoor plant area, taking into account the air flow conditions. They detect both open and covert smoldering fires alike during their formation phase.
The multi-criteria evaluation makes it possible to specifically tolerate disturbances caused by natural outgassing of conveyed materials or exhaust gases from conveyor vehicles. Thus, during commissioning, a signal spectrum is first recorded that allows local gas loads to be included in the internal evaluation.