Rae Systems

RAE Systems, founded in 1991, is a leading global developer and manufacturer of rapidly deployable chemical and radiation detection monitors and multi-sensor networks for homeland security and industrial applications. 
RAE Systems’ technologically advanced products are based on proprietary technology, and include a full line of portable, wireless and fixed atmospheric monitors and photoionization detectors and gamma and neutron radiation detectors for the detection and early warning of hazardous materials.


CEL Instruments have been manufacturing high quality instrumentation for the measurement of noise and vibration since the early 1970’s. Originally formed from the company Computer Engineering Limited, a British company specializing in the design and manufacture of computer related equipment, CEL rapidly became well known for designing state of the art noise products in the UK. In 1998, Casella acquired CEL Instruments, manufacturers of innovative noise monitoring equipment. 

The natural synergy formed from this integration allows the combined new company, Casella CEL, to offer a broader and more comprehensive product range to both the occupational and environmental market sectors.


Ever since the introduction of the first oxygen pressure reducer in 1899, Draeger has been dedicated to respiratory protection and protecting human life wherever it is endangered. Over the years their product range has expanded to include gas detection, diving and medical products.  Draeger Limited (then known as Draeger Normalair) was formed in 1963 as an equal joint venture between Draegerwerk AG (Germany) and Westland Aircraft (UK). Its task was to sell Draegerwerk products and Normalair (Westlands) Breathing Apparatus in the UK.

In 1965 Breathing Apparatus manufacture commenced in the UK and a purpose built facility was established in Blyth, Northumberland.  In 1974 the Westland 50% share in the company was purchased by Draegerwerk and the Company was then re-named Draeger Safety Limited.



After a tragic workplace accident in West Virginia, 1912 where 80 miners were killed after methane gas ignited, mine engineer John T. Ryan and his college formed Mine Safety Appliances Company to lead the charge for workplace safety. 

One of the first products produced; with the help of Thomas Edison was the electric cap lamp which reduced mine explosions by 75% over 25 years.
Over the years MSA’s product range grew with the introduction of breathing apparatus in 1917, the first V-Gard Cap in 1962, their first high-pressure SCBA in 1983 and the industry’s first low-maintenance full-face piece respirator in 1993.  In 1998 the MSA Safety Works consumer product line was launched.

MSA expanded its operations to many countries over the years and in 2004 were listed on the New York Stock Exchange.  Most recently, in 2010 MSA completed an acquisition of General Monitors who were a leading innovator and developer of fixed systems for gas and flame detection.

Fixed Gas Detection
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