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Technical Discussions
Brian A Wright
Brian A Wright
18:04 Apr-17-2019
KDS Twin Panel Sensitivity and System Performance

Good Morning,

I am inquiring ideas and comments in regards to utilizing KDS twin panels for my sensitivity check.

The scenario is as follows, 10-12 minute development time with Level 2 sensitivity penetrant, a good minimal washing technique. I have looked at the panels under an inspection black light, and note that I can see indications bleeding out. I have tried blotting, wash station air water removal (15 PSI), and running the panels in a oven dryer only, with R&D of 1 min to 5 minutes.

After drying I have reviewed that panels and noted indications and sometimes minimal,

I am using a dry developer booth and have tried both minimum and of 10 minutes and up to 1 hour.

The indicati0ons are not being visible, I then can take the panels, wipe them off with a wipe, and or clean them with cleaner, and the indications, bleed out with brilliance.

In addition utilizing a non aqueous developer spray also brings the indications out to full brilliance. Which by comparison it is known that the non aqueous is more sensitive than dry and is expected.

So with this information, which direction would you focus to assist the indications bleed out in a consistent and reliable process.

Thanks for your input and suggestions, Brian

    
 
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Godfrey Hands
Consultant,
PRI Nadcap, United Kingdom, Joined Nov 1998, 301

Godfrey Hands

Consultant,
PRI Nadcap,
United Kingdom,
Joined Nov 1998
301
09:46 Apr-22-2019
Re: KDS Twin Panel Sensitivity and System Performance
In Reply to Brian A Wright at 18:04 Apr-17-2019 (Opening).

Hi Brian,
After the penetrant dwell of 10 to 12 minutes and minimal wash, do not "blot" the panels, but just remove excess water with a gentle stream of air before you dry the panels in a circulating air oven set at not more than about 60 Celsius.
After this, apply a light coating of dry developer and allow 10 minutes development time before you remove excess dry developer with a gentle stream of air or by tapping the panels on their side.
You should then be able to see the indications

Godfrey

    
 
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