Gas Monitor Manufacturer Awarded MED and DNV Approvals

The certification means that MSR Electronic's Gas Detector PX2 line is now approved for shipping according to the European and international shipping directive By DA Editor / 19 Apr 2022

MSR-Electronic, developer and producer of gas detectors and gas controllers for commercial and private shipping, has been awarded MEDB00007CE, MEDD0000272 and TAA000032C certification. With the certificates, MSR is helping to make the worldwide use of fixed gas detectors on board safe. These approvals include safety, reliability and environmental regulations that ships and mobile offshore units must comply with in international waters.

MSR-Electronic Solutions for Reliable Gas Monitoring in Shipping

For the marine sector, fixed gas detectors (type PX2) are used in hazardous areas of zone 1 or zone 2.  The microprocessor-based gas warning device with a 4–20 mA / RS-485 Modbus output signal, alarm and fault relay (all SIL2 certified) is used to monitor the ambient air for combustible gases and vapors by means of a catalytic sensor element (pellistor) or to monitor oxygen concentration and toxic gases, such as CO, NH3, NO2, HCN, HCl, H2S by means of an electrochemical sensor element.

Benefits of the Gas Detector PX2 include:

  • ATEX and IECEx certificates MSR-Electronic for electrical Ex protection
  • Approved Measuring Function & SIL2 safety functions 4–20 mA, RS-485 and relay
  • Approval for shipping according to the European Directive 2014/90/EU, EU2020/1170 and according to the international directive DNVGL-CG-0339 (MEDB00007CE, MEDD0000272, TAA000032C)
  • PX2-1 for zone 1 (and also suitable for zone 2): Type “Ex db” protection flame-proof enclosure
  • PX2-2 for zone 2: Type “Ex nA” protection
  • Enclosure: additional FM and CSA certificates for Class I, Div. 1
  • Continuous self-monitoring, microprocessor with 12-bit converter resolution
  • Reduced costs thanks to simple maintenance, e.g. exchange of sensor head (X-Change technology)
  • Calibration service by exchanging the sensor head
  • Proportional 4–20 mA output, serial interface to the control centre
  • Reverse polarity protection, overload protection
  • Alarm and fault signal relay
  • Option: LCD display with status LEDs

Ships as Areas of Risk

Ships and oil rigs are areas of risk because there is no possibility of escape. Dangerous gas concentrations can form on board at any time and must be detected at an early stage.  Fixed gas detection systems are therefore essential to ensure the safety of people and of the many applications and locations on board; e.g. :

  • Crew accommodation
  • Engine rooms
  • Pump rooms
  • Tank storages
  • Tank ullages
  • Cargo holds
  • Supply lines near gas

The vessels are designed and built to successfully keep water out. But this feature also provides ideal conditions for undesirable gases and vapors to gather.  Hazards may arise depending on the type of function of the vessel and its cargo. Gas monitoring in shipping must be ensured, such as in:

  • LNG/LPG carriers
  • Breakbulk vessels
  • Bulk carriers
  • Cargo container ships
  • RO-RO vessels
  • Oil and chemical tankers
  • Fishing vessels
  • Passenger ships
  • Other specialised vessels
Posted by DA Editor Connect & Contact

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