Explosion-proof and flameproof enclosure for raman systems

A Raman analysis system, comprising:

• an excitation source adapted generate excitation radiation;
• an optical apparatus configured to transmit the excitation radiation to a sample under investigation and to convey optical energy collected from the sample to a spectrograph, wherein the collected optical energy includes a Raman spectrum of the sample;
• the spectrograph including an optical grating, operative to separate the optical energy collected from the sample into a Raman spectral signal, and a detector configured to receive the Raman spectral signal and convert the Raman spectral signal into an electrical signal representative of the Raman spectrum of the sample;
• a controller in communication with the spectrograph, the controller configured to receive the electrical signal from the detector to display and/or store the Raman spectrum of the sample;
• and
• at least one flame-resistant or explosion-resistant enclosure, wherein at least a portion of the spectrograph is disposed in the at least one enclosure and separate from other components of the Raman analysis system.