Car park “Gorica” in Zagreb uses CO gas measurement technology from MSR-Electronic


CO gas sensors from MSR protect against toxic, odourless gases


The company Zagrebparking d.o.o. offers parking facilities throughout Zagreb. Apart from outdoor public parking spaces, they manage 9 public parking garages. They have a total capacity of almost 3,000 parking spaces, mostly located in the city centre.


Safe CO gas measurement technology from MSR-Electronic


The carbon monoxide concentration in the car parks is reliably monitored by a fixed gas alarm system from MSR-Electronic according to EN 50545-1.

As a current project, the “Gorica” car park with 370 parking spaces was just completely equipped with new CO gas measurement technology by the MSR partner Aurel d.o.o. Further car parks of the company Zagrebparking d.o.o. will follow.


Carbon monoxide hazards


Carbon monoxide is a dangerous, toxic gas still greatly underestimated because it has no smell nor taste and is not visible.

Many reported cases of carbon monoxide poisoning show that although victims are aware of not being fine, they lose their bearings and cannot save themselves, for example by leaving the building or calling for help.

black car in underground parking

©MSR-Electronic Germany_CO Gas measurement technology

Just like oxygen, CO is absorbed by the body through the lungs during normal breathing.

It competes with oxygen by displacing it in the red blood cells, thus reducing the oxygen supply to the heart, brain and other vital organs.

In high concentrations, CO kills within minutes.

An increased number of cars leaving at the same time will eventually lead to a sharp rise in the carbon monoxide level in parking garages. This can happen, for example after a concert or in a shopping mall garage in bad weather.

The gas warning system with the precise CO gas measurement technology sounds the alarm and informs the fire department in parallel.




Exchangeable sensor system with digitized measured value processing, temperature compensation and self-monitoring for continuous monitoring of the ambient air.


According to the standard EN 50545-1, the digital gas sensors (type SC2) are used to detect CO, NO2 and/or LPG in underground car parks, tunnels etc.

The exchangeable sensor system consists of the following components:

SB2 with sensor

©MSR-Electronic Germany_CO Gas measurement technology_Sensor board SB2

  • sensor board with housing (type SB2)
  • sensor cartridge (type SC2)

The sensor cartridge has an independent μController for evaluating and storing all relevant measured values and data of the sensor element.

This data the sensor cartridge transfers to the sensor board via the internal local bus.

Up to 3 sensor cartridges for different gases can be connected to the sensor board. The sensor cartridge can be mounted directly on the basic sensor board or remotely via a remote sensor board (RB2).

Via the RS-485 fieldbus interface the basic sensor board communicates with the DGC-06 gas controller – the heart of the fixed gas detection system.


Re-calibration by simple exchange on site


Calibration can be performed by:

  • simply exchanging the sensor cartridge
  • the integrated, convenient calibration routine with selective access release directly at the system


The Digital Gas Controller DGC-06 from MSR-Electronic



©MSR-Electronic Germany_Gas measurement device DGC-06

The Digital Gas Controller DGC-06 from MSR has been developed for large systems or even for extensive connections. There is hardly a scenario in gas monitoring which this controller will not cover. Everything is possible, from complex multi-storey car parks to access functions that are activated by gas alarm.

The DGC-06 Gas Controller series can monitor and evaluate up to 128 gas sensors, including 96 PolyGard®2 digital and/or 32 analog sensors (4–20 mA). Four freely adjustable alarm thresholds are available per sensor.

For alarm messages, the controller system has up to 128 relays with potential-free changeover contact and up to 16 analog outputs with 4–20 mA signal.

The gas detection system from MSR-Electronic conforms to:

  • EN 50545-1 / EN 50271 / EN 61010-1
  • DIN/EN 61508 / DIN/EN 60079-29-1
  • ANSI/UL 61010 1
  • CAN/CSA-C22.2 No. 61010-1






Further information on MSR products can be found in the current online catalog or in the web shop.

MSR-Electronic is a manufacturer of fixed gas warning systems with decades of experience in the field of gas measurement technology.  The international company with headquarters in Germany has a wide range of methods for the detection of toxic, combustible gases and oxygen. On this basis MSR-Electronic develops individual gas sensors, controllers and warning devices for many applications, such as  parking garages, tunnelspetrochemical industry  or  shipping. The products meet more than the  general standards and regulations  and can therefore guarantee the safety of the plantIf you have any questions please send us an email or give us a call.