Back to the Basics: Location in Multi-zone Drying

When choosing the appropriate the sampling location in multi-zone drying you must consider what happens during fault conditions.  

The first or second zone might normally show the highest solvent concentration. But during an upset, it is not necessarily the zone where the peak concentration will appear. Excess solvent from an upset may very well tend to "carry over" into the next zone and produce a peak concentration there rather than in the first zone. 

Back to the Basics: Sample Probe Location

A key element in analyzer performance is the sampling location. Failure to install the sample probe in a "representative" location can lead to inaccurate or greatly delayed readings. A location representing the average solvent concentration of a single zone is desired. 

There are two basic methods of probe location: 

Back to the Basics: Sampling System Issues

The speed and accuracy of the analyzer depend equally upon the sampling system and the detector. The final development of the worst accidents occurs in seconds. It is part of the last line of defense against fire and explosion. There’s precious little time between the rise in concentration and the explosion. That’s a very good reason to pay close attention to the analyzer’s response time.

Did you know? 10 Facts about the PrevEx

 

10 FACTS ABOUT PREVEX ANALYZERS

the PrevEx is our flammability analyzer for lower flammable limit monitoring (LFL/LEL)