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Technical Discussions
CHARLIE TOH
Consultant, NDT LEVEL 3
Singapore, Joined Mar 2005, 3

CHARLIE TOH

Consultant, NDT LEVEL 3
Singapore,
Joined Mar 2005
3
02:07 Jun-10-2005
ASTM E1742-05

With reference to Para 6.27.4.4, it states that the "maximum readable film density values shall be established when the viewer is procured and shall be re-establish when the viewer is repaired, moved, altered, or a different bulb, bulb designation or manufacturer is used".
Most of us are using our existing film viewers, in which the maximum film density values are checked using a light meter to measure transmitted light, in foot candles, through a 2.0D film, in accordance with ASTM E1742-00. If we do not intend to procure a new viewer, do we still have to purchase a new lightmeter to measure the light intensity in candelas/m squared, according to ASTM E1742-05? Am I right to say that it only applies to newly procured viewers?


    
 
 
Mathias
Mathias
08:43 Jun-13-2005
Re: ASTM E1742-05
I believe you have to purchase a new lightmeter. The new requirement applies to the excisting viewers whenever the viewer is repaired, moved, altered, or a different bulb, bulb designation or manufacturer is used. This is my interpretation.
----------- Start Original Message -----------
: With reference to Para 6.27.4.4, it states that the "maximum readable film density values shall be established when the viewer is procured and shall be re-establish when the viewer is repaired, moved, altered, or a different bulb, bulb designation or manufacturer is used".
: Most of us are using our existing film viewers, in which the maximum film density values are checked using a light meter to measure transmitted light, in foot candles, through a 2.0D film, in accordance with ASTM E1742-00. If we do not intend to procure a new viewer, do we still have to purchase a new lightmeter to measure the light intensity in candelas/m squared, according to ASTM E1742-05? Am I right to say that it only applies to newly procured viewers?
------------ End Original Message ------------




    
 
 
DJ Kallhof
DJ Kallhof
07:40 Jun-22-2005
Re: ASTM E1742-05
Light meters currently available register up to 19,990 lux. That level will only qualify the film viewer to interprate 3.30 density film, according to ASTM E 1742-05 Fig. 2. If I am incorrect thinking this please respond.

----------- Start Original Message -----------
: I believe you have to purchase a new lightmeter. The new requirement applies to the excisting viewers whenever the viewer is repaired, moved, altered, or a different bulb, bulb designation or manufacturer is used. This is my interpretation.
: : With reference to Para 6.27.4.4, it states that the "maximum readable film density values shall be established when the viewer is procured and shall be re-establish when the viewer is repaired, moved, altered, or a different bulb, bulb designation or manufacturer is used".
: : Most of us are using our existing film viewers, in which the maximum film density values are checked using a light meter to measure transmitted light, in foot candles, through a 2.0D film, in accordance with ASTM E1742-00. If we do not intend to procure a new viewer, do we still have to purchase a new lightmeter to measure the light intensity in candelas/m squared, according to ASTM E1742-05? Am I right to say that it only applies to newly procured viewers?
------------ End Original Message ------------




    
 
 
Mathias
Mathias
00:55 Jun-27-2005
Re: ASTM E1742-05
Yes, seems correct. But I hope you don´t mean currently availabe on the market?!

----------- Start Original Message -----------
: Light meters currently available register up to 19,990 lux. That level will only qualify the film viewer to interprate 3.30 density film, according to ASTM E 1742-05 Fig. 2. If I am incorrect thinking this please respond.
: : I believe you have to purchase a new lightmeter. The new requirement applies to the excisting viewers whenever the viewer is repaired, moved, altered, or a different bulb, bulb designation or manufacturer is used. This is my interpretation.
: : : With reference to Para 6.27.4.4, it states that the "maximum readable film density values shall be established when the viewer is procured and shall be re-establish when the viewer is repaired, moved, altered, or a different bulb, bulb designation or manufacturer is used".
: : : Most of us are using our existing film viewers, in which the maximum film density values are checked using a light meter to measure transmitted light, in foot candles, through a 2.0D film, in accordance with ASTM E1742-00. If we do not intend to procure a new viewer, do we still have to purchase a new lightmeter to measure the light intensity in candelas/m squared, according to ASTM E1742-05? Am I right to say that it only applies to newly procured viewers?
------------ End Original Message ------------




    
 
 

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