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Gas detectors

RACI company is also able to offer its customers contemporary, proven and robust personal and process protection equipment with competent and compliance solutions, low costs of ownership, high reliability and availability as well as high quality i.e. reliability, comparability and traceability of measurements.

RACI offers its customers consulting, installation, commissioning, calibration and maintenance of personal and process protection equipment, consists of elements world-wide renowned producer MSA.

Portable gas detectors:


Gas detector MSA ALTAIR (O2, CO, H2S, NH3, NO2, HCN, PH3, SO2, Cl2, ClO2)


  • Easy to use
  • Compact
  • Robust design

Tehnical specification:

 detector ALTAIR (PDF file, 125Kb),
 detector ALTAIR PRO (PDF file, 640Kb).

Gas detector MSA ALTAIR 2X (CO, H2S, NH3, NO2, SO2, Cl2)


  • Easy to use
  • Compact
  • Robust design
  • New MSA XCELL sensors
  • Multi-Gas Detector
  • Unique pulse check
  • Large high contrast display
  • Longer sensor life
  • IP 67
  • Durable rubberised housing

 detector ALTAIR 2X (PDF file, 1.1Mb),

Gas detector: MSA ALTAIR 4X (LEL, O2, CO, H2S)


  • Easy to use
  • Large LCD
  • New MSA XCELL sensors
  • Multi-Gas Detector (LEL, O2, CO, H2S)
  • MotionAlert features
  • Longer sensor life
  • IP 67
  • Rugged rubberised housing
  • Withstands 6 m drop

Technical specification:

 detector ALTAIR 4X (PDF file, 1.3MB),
 ALTAIR 4X features (PDF file, 66Kb).

Scentroid OdoTracker is a wearable multi-sensor device that measures the concentrations of two chemicals in ambient air at the same time. The chemicals to be measured by the device are specified at the time of ordering. For example the user may specify the measurement of Hydrogen Sulphide (H2S) in ppb level and Ammonia (NH3) in ppm level. The wearable instrument logs the chemical measurements as well as temperature and humidity of the sample, GPS location and automatically transfers all data to the user’s supplied smart Android device via Bluetooth.

 Brochure Scentinal OdotrackerTR8 and PolutrackerTR8+ (PDF file, 1.8Mb),

NEW! Portable gas detectors GAS SENSE

Portable gas detectors GAS SENSE are designed to measure explosive and toxic gases. Different models measure relative or absolute concentration of combustible gases, toxic gases, refrigerants and oxygen.

Portable gas detectors are available in three series GS-500, GasSense-1000 and GasSense-1000.L. All models are equipped with highly sensitive sensor elements, LCD display for visualization of readings, convenient and easy to navigate menu.

More information

The Scentroid DR1000 consists of a flying laboratory and a commercial drone. The DR1000 can be used to sample and analyze ambient air at heights of up to 150 meters above ground level that was previously impossible to accomplish.

Air quality mapping, model verification, analysis of potentially dangerous sites are all made possible by this novel innovation.

 Brochure Scentinal Flying Laboratory DR1000+
(PDF file, 0.9Mb),

Stationary gas detectors:

LEL, O2, CO, H2S, HCN, NO2, PH3, SO2, Cl2, ClO2, NH3, O3 ...

More in MSA catalog (PDF, 4.7MB) or BW Technologies, MSA, Ultratech.

Stationary gas detector plug & play version

  • Easy installation and connection
  • Choice of 22 gas sensors (TOX, OX, EX)
  • Light and sound signalisation
  • Analog and digital outputs
  • ATEX version
  • Modular design
 Stationary gas detector plug& play EN (1.2MB)

Scentinal SL50 is a simultaneous ambient pollutant and odour emission monitoring system based on high accuracy (ppb level) sensing technology. Scentinal can provide continuous monitoring of odorous gases such as H2S, Ammonia, VOCs, and SO2 as well as non-odorous gases such as CO2 and Methane. Scentinal uses up to 20 sensing modules ranging from Photo-Ionization Detector, Non-Dispersive Infrared Detector, Electro-Chemical Cell, Laser Scattered Counter and Metal Oxide Sensors. All data is stored locally and sent to the central server accessible by the user. The Sensor Information Management System is used to not only store and display monitoring results but also provide remote configuration, calibration, and diagnosis of multiple Scentinal units.

 Brochure Scentinal SL50 (PDF file, 5 Mb),

NEW! Domestic gas detectors

Domestic gas detectors H-220 monitoring the concentration of combustible gases, volatile organic solvents and carbon monoxide and alarm light and sound when the maximum permitted levels are reached.

Depending on the detected gas domestic gas detectors series H-220 are available in the following models: H-220-CH4 - methane, H-220-LPG - LPG, H-220-IAQ - indoor air quality, H -220-CO - for carbon monoxide.

More information

RACI d.o.o.
Tehnološki park 24
1000 Ljubljana
Slovenia, EU

T: +386 1 620 33 80
F: +386 1 620 33 90
Company RACI d.o.o. has been awarded a certificate Excellent SME Slovenia - for business sucess and trustworthy company.


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