PRESENTATI ON

The ionic contamination tester CT1000 has been designed to measure in a simple and precise manner the level of ionic contaminants following international standard as Mil, Def STD, IPC et IEC.

This kind of measurement is mandatory to check the cleanliness of boards after a cleaning process, or during some changes in a production process, good inwards or for the approval of process, boards or components.

EXTRACTION METHOD

The ionic contamination test is an accelerated method to extract contaminants in few minutes these contaminants could be discrete during years depending of humidity and thermal conditions, this method will push them to react with the solution.

To achieve this, we use a blend of deionised water with ultra pure iso propanol (propanol – 2). Alcohol to dissolve compounds non polar as the resin and the water to separate in ionic form all polar residue and/or dissociable. The combination of these solvents is a powerful solution of cleaning capable to detect some residues even after a very good cleaning.

CIRCUIT OF MEASURMENT

The CT1000 is based on a tank where we will introduce the samples, a cell conductivity with thermal compensation, a pump, some valves to switch from the Regen mode (circuit is in this case : tank => cell => pump => tank) to the Test mode (in this case : tank => cell => column/filter => pump => tank), a column filled with a blend of resin (anionic and cationic), a drain valve and an electronic board to drive the system.

CYCLE of MEASURMENT

The cycle of the measure is the following;

1. Check the level of the solution in the tank on the line placed on the windows(at the top of the left side) Check also the density / temperature.

2. Regeneration of the solution to be enough clean to be in conditions defined in the different standards.

3. When we obtain this threshold, we stop the regeneration and we can introduce the sample and switch to the test mode.

Analyse in real time, during the test, we can follow the curve of the contamination due to the extraction of contaminants.

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