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Nextech offers the following types of spark detection:


Spark detection in dark areas


GreCon’s spark detector FM 1/8 can be used in dark areas with no ambient light. This guarantees the high sensitivity of the detector’s sensors which consequently provide optimal detection of ignition sources even in dense materials. The system is easy to maintain as the sensors are usually kept clean by the surrounding air and material flow.

Spark detection in high-temperature areas

FM 3/8 sensors with fibre optic cables are used in areas where processing or drying temperatures exceed 65 °C (149 °F). Three separate glass fibre cables encased in stainless steel transmit the infrared radiation to the sensor. Each cable ends in a photo optic diode. In areas of extreme temperatures, solid glass adapters are added to the end of the cables. Reliable detection is ensured through the use of three detection elements per sensor. The cables are available in a number of different lengths.

Spark detection in daylight conditions


GreCon’s DLD 1/8 sensor is used for spark detection in light surroundings. The sensor can detect sparks on systems such as conveyor belts or production lines.

Detection of hot particles and glowing embers

Industrial production processes often create hot material or build-ups /masses which do not necessarily glow visibly, and which can therefore be difficult to detect. Examples of such materials are coal or soot deposits in ducts or large amounts of pulverised material from crushing processes. These occur in places like exhaust ducts at hardening shops, at foundries and at recycling plants. GreCon’s HPD-detector is a reliable component for detecting potential dangers at these low temperatures.

Temperature monitoring


GreCon’s thermo detector TM1/9 detects both immediate and gradual rises in temperature. The detector has two different trigger functions:

  • In case of smouldering fire, for instance slow-rising temperatures, the alarm is triggered when the temperature reaches a pre-set threshold limit value.  
  • In case of immediate rises in temperature for instance in case of a fuel fire, the alarm is triggered in the instant the rise in temperature is registered – before the pre-set threshold is reached.

Detection of smouldering fires and other types of fire


Burning embers hidden inside material– for instance inside materials stored in a silo – release combustion gases. These gases can be detected using GreCon’s combustion gas detector BGM.

The detector detects the gases released by the smouldering fire and must consequently be installed in an area where the gases accumulate, making it possible to detect the gases before they are ignited and before the smouldering fire spreads.

Detection of open flames

Flame Detector

GreCon’s flame detector uses modern UV/IR-technology to ensure reliable flame detection. The UV sensor triggers an alarm as soon as open flames are detected, enabling employees to extinguish the fire manually before it spreads. Should the fire continue to spread, the independent IR sensor confirms the original alarm and triggers automatic fire extinguishment.

Smoke detection



GreCon’s scattered light smoke detector SRM 1/8 detects smoke-emitting fires, e.g. in return-air ducts or dust filters. The smoke detectors can be used in dust-free areas.


Read more about Nextech’s spark extinguishing products:

➢Spark extinguishing

➢How spark extinguishing works



➢These industries use spark extinguishing