chromaS : extension of range tanks to linearisation

For sulfur compounds analyzed, the signal response is not linear. Intensity emission is not proportional to sample amount. It is an exponential form in agreement with FPD detector theory. To solve the non linearity problem and extend the ranges we implemented a linearization program.

In 2009, VISTACHROM 1.46 our new software version, uses automatic calibration (DMS from permeation tube) and automatic results taking account of linearization calculations.

For each compounds we have drawn linearisation curves and obtained formula we integrate in substance table.

We use : Y = aX 0.6 (very near the theoretical expectation) with regression factor up to 0.995

Now detection range is ppb and ppm level. For example H2S range is 0.01 to 10 mg/m3 or 7 ppb to 7 ppm.
 

Related Download :

• Bulletin October 2009