Two-way solenoid valve mounted on sample inlet side, admits fresh air to detector unit only when air-purge button on control cabinet is depressed.
USING H I G H F L A S H POINT
SOLVENTS?
M-S-A® Remote H e a d Analyzers s a m p l e combustible vapors in elevated temperature a r e a s s u c h a s coating ovens and drying ovens. And they do it reliably, accurately, and safely. Combustible vapors in high temperature operations are often impossible to analyze at normal room temperature. The problem is: how to measure the sample without cooling and condensing the combustible vapors. The M-S-A Remote Head solves this problem. Filament units are enclosed in an explosion-proof housing suitable for installation in Class 1, Group D hazardous areas. This unit may be placed in the oven or a high temperature area. This permits analysis at process temperatures without condensation of the vapors to be measured. Then, after passing through the filament chamber, the sample is allowed to cool and any condensate is trapped and disposed of, to prevent blockage of the vacuum line to the sample pump. Where temperatures fluctuate—over a wide range in certain types of ovens —it is necessary to maintain a reasonably constant sample temperature during analysis. For this purpose, the Remote
Head can be supplied with built-in, thermostatically controlled heaters to maintain a constant operating temperature within the Remote Head Assembly. This assures utmost reliability and accuracy under these sampling conditions. An M S A I n s t r u m e n t Specialist would be happy to answer your specific questions on gas analysis equipment. Get in touch with him, soon. And write us for helpful new literature on the M-S-A Remote Head Analyzer.
INSTRUMENT DIVISION
M i n e Safety Appliances C o m p a n y Pittsburgh 8, Pennsylvania
