Searchline Excel

Searchline Excel is the best-selling infrared beam detector on the market, and it is apllied by users around the world. First introduced in 1998, it has become the standard in the beam gas detection segment with constant upgrades and improvements. It is completely immune to the effects of solar radiation and other sources of radiation. It has a built-in double filter that compensates for the effects of moisture and rain and thus allows the detector to work in all climatic conditions.

Read More About Gas

Flammable group of gases (Hydrocarbons)


They occur in practically every segment of life. The most famous representative is natural gas (methane, CH4), and the combinations of carbon and hydrogen molecules are practically unlimited. We use them as energy sources in all endothermic processes and in almost all industries (chemical, petroleum, pharmaceutical, petrochemical). The biggest problem is their flammability and explosiveness, and for the most part, toxicity. They are one of the biggest risks in all industries. Flammability directly depends on their concentration in the air mixture and ranges between LEL - Lower Explosive Limit and UEL - Upper Explosive Limit. At concentrations of 4.4% to 17% by volume of methane in the air, the spark causes an explosion, so 4.4% v / v CH4 = 100% LEL.

The standard limits of alarm settings within the EU are Low = 10% LEL, High = 20% LEL

  • Dual filter to prevent the effects of moisture and rain
  • Completely immune to solar radiation
  • Vibration resistant
  • Low energy consumption in all operating conditions
  • Wide detection radius
  • Extremely fast response to detected gas
  • Easy to maintain
  • Dimensions: 18.5 x 4.0 x 8.0 cm
  • Weight: 3.5 kg
  • Operating temperature: -40 to +65 ° C
  • IP 66/67 degree of protection
  • ATEX Zone 1
  • SIL 2 certificate
  • Onshore and offshore plants
  • Chemical and petrochemical plants
  • Gas transport pipelines
  • Large warehouses and buildings


  • Mounting set
  • Distribution board
  • Portable tester for Optima / Searchline Excel detector
  • Detector protection options from external influences
Title Date File size
Searchline Excel Technical Handbook 11.03.2021. 8.26 MB
Searchline Excel EU DofC 11.03.2021. 399 KB
11256_searchline_excel_ir_ds0282_v8_0215_emea_lr 21.10.2021. 966.8 KB