where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -

Matec Instrument Companies, Inc.
Ultrasonic test instrumentation and systems for scientific research, quality control inspection and production testing applications.

625 views
Technical Discussions
Dmitri
Consultant
Algeria, Joined Sep 2004, 1

Dmitri

Consultant
Algeria,
Joined Sep 2004
1
01:50 Sep-30-2004
Checks of a radiographic films viewer (negatoscope)

In EA-04/05 "Accreditation for Non-Destructive Testing" Appendix A (Radiographic equipment) is contained the requirement for "Radiographic films viewers (negatoscope) shall be periodically checked for intensity and evenness of illumination".

I have a radiographic films viewer (negatoscope)"WILNOS", but unfortunately have lost the Guidance for operation of that device. In the Guidance should be given the precedure of intensity and evenness of illumination checks.

As I have no Guidance of above mentioned checks, please tell me- which operations can be performed for radiographic films viewer (negatoscope)to check the intensity and evenness of illumination ?

Thanks for your help.


    
 
 
DJ Kallhof
DJ Kallhof
07:57 Sep-30-2004
Re: Checks of a radiographic films viewer (negatoscope)
----------- Start Original Message -----------
: In EA-04/05 "Accreditation for Non-Destructive Testing" Appendix A (Radiographic equipment) is contained the requirement for "Radiographic films viewers (negatoscope) shall be periodically checked for intensity and evenness of illumination".
: I have a radiographic films viewer (negatoscope)"WILNOS", but unfortunately have lost the Guidance for operation of that device. In the Guidance should be given the precedure of intensity and evenness of illumination checks.
: As I have no Guidance of above mentioned checks, please tell me- which operations can be performed for radiographic films viewer (negatoscope)to check the intensity and evenness of illumination ?
: Thanks for your help.
------------ End Original Message ------------
The requirements for film viewers intensity checks is detailed in ASTM E 1742, para. 6.27.4. First you must create a film to cover the entire film viewing area with an even 2.0 density. With the film in place use a digital white light meter and measure the intensity of the light that passes through the film. Figure 2 in 1742 will show you the maximum allowable film density for that viewer.




    
 
 

Product Spotlight

HD-CR 35 NDT Computed Radiography System

Portable high-resolution CR scanner for all radiography applications - weld testing, profile images
...
and aerospace. No matter what type of radiographic testing you are performing, the unique TreFoc Technology of the HD-CR 35 NDT imaging plate scanner always guarantees the highest image quality.
>

Ceram 35P (Panoramic)

The Ceram 35P is the panoramic brand new portable generators designed by Balteau NDT and is offeri
...
ng no less than 300kV, 5mA and 100% duty cycle for an incredible image contrast even at full power. It will will surely become a reference as it can be classified as a high power portable unit and can be operated with our CF2000 control unit but also with our well known Hand-X Wireless Remote Control.
>

Swift & Scorpion2 - a state-of-the-art remote-control ultrasonic crawler

The Swift and Scorpion2 dry-coupled, remote-access ultrasonic crawler bring major efficiency and d
...
ata improvements to tank shell inspections and other structures such as vessels and offshore installations.
>

ISONIC 3510

Very Powerful Superior Performance Extremely Portable Smart Phased Array Ultrasonic Flaw Detector an
...
d Recorder with 2 Conventional UT and TOFD Channels uniquely combines PA, single- and multi-channel conventional UT, and TOFD modalities providing 100% raw data recording and imaging. Suitable for all kinds of every-day ultrasonic inspections
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window
s