MSA Series 47K Gasmonitor

MSA Series 47K Gas Sensor


Affordable passive catalytic sensors for detecting potentially dangerous concentrations of flammable gases and vapours in air up to 100% LEL. Available as Standard (ST), Insensitive (PPR), High Temperature (HT) versions with a full range of accessories and junction boxes to suit virtually all industrial applications.



Series 47K sensors, used in combination with MSA controllers, fully comply with the conditions of ATEX directive 94/9/EC, including performance approval, and because they are suitable for SIL 2, they can be used as part of a safety-related system. 

This product is available in various options and the price is therefore on request. For more information and prices, please contact us at


  • Poison resistant (PRP) and high temperature (HT) versions
  • Suitable for use in safety-related systems (ATEX 94/9/EC)
  • 3 or 5-wire connection
  • Stainless steel housing
  • Complete range of accessories
  • Fast response time
  • Excellent price/performance ratio
  • Safety Integrity Level - SIL 2

More Information

More Information
Storage temperature –20 °C to +40 °C
Measuring range 0–100% LEL
Weight ca. 230 gr (St. St. Sensor)
Diameter Ø 36 x 56 mm
Materiaal Stainless Steel
Operating temperature range (PRP) -40 °C tot +55 °C
Operating temperature range (extended range*) -40 °C tot +90 °C
Operating temperature range (HT) -40 °C tot +160 °C
Relative humidity in operation 5% tot 95% RH, not-condensating
Operating pressure range 100 ±20 kPa