LUX FOR INDUSTRIAL RADIOGRAPHY FILM INTERPRETATION

[Sonu Shahu]

Dear Experts,

 

How much lux for film interpretation by film viewer? 

what is reference code & specification for this?

THANKS & REGARDS

SONU M SHAHU 

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kunal

[M Vedaraju]

Dear Kunal,

There is no specific code or standard requirement of ‘lux’ for RT interpretation. Lux requirement is for Visual, MPI &LPI.

RT film viewer must have variable light intensity adjustment and able to read the maximum permissible density, which is in general 4.0.

 

Thanks,

With kind regards,

M. Vedaraju

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[Manivannan Hemu]

Hi,

 

Luminance required (for RT film viewer) will depend on the film density that needs to be read.

 

For reading film density of 4H/D, may require Luminance of 103,000 cd/sqm that will roughly equal to 323,000Lux.

 

You may also refer to standard ASTM E 1390 and ISO 5580 for transmitted light thru different densities are specified.

 

Regards,

MANIVANNAN.

Manager QA

Flow link systems

Coimbatore.

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