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 -

555 views
Technical Discussions
Chris Moon
Chris Moon
15:05 Jan-08-2010
Sylvania Par 38 Brightness Question

I have noticed over the last couple of years that the brightness of the Sylvania Par38 bulbs are not giving me as much output as a few years ago. I have checked and changed the black light filter, and it did not help. If I recall correctly, a few years ago I was getting somewhere in the neighborhood of 5000 uw/cm^2. Now I am getting about 2300-2500 uw/cm^2. Anyone experiencing this same issue? Thanks in advance for any ideas/input.

 
 Reply 
 
Jean-Claude Schwartz
Jean-Claude Schwartz
16:37 Jan-08-2010
Re: Sylvania Par 38 Brightness Question
In Reply to Chris Moon at 15:05 Jan-08-2010 (Opening).

Hello Chris,

As far as I'm aware, this is the case with most bulbs. We have used Sylvania (halogen & mercury vapour) in the past. We seem to have a life expectancy anywhere from 6 months to 3 years (depending on frequency of use/ and abuse!).
A good idea would be to have control check sheets. The lamp can be measured during each working day os shift and would show you an eventual trend, eg the last bulb we bought (Labino) was measured at 9'000 uw/cm2 (in 2008), this is now at 7'600.
Hope this helps.

 
 Reply 
 
Chris Moon
Chris Moon
18:35 Jan-08-2010
Re: Sylvania Par 38 Brightness Question
In Reply to Jean-Claude Schwartz at 16:37 Jan-08-2010 .

Jean-Claude,

I forgot to specify, that even the new bulbs in the box are lacking the intensity they used to have several years ago out of the box. I didnt know if they have changed the composition or the manufacturing process of the bulbs. Any ideas?

 
 Reply 
 
Michel Couture
Michel Couture
21:05 Jan-08-2010
Re: Sylvania Par 38 Brightness Question
In Reply to Chris Moon at 18:35 Jan-08-2010 .

Chris,

It may not be related, but I had a similaar experience years ago with a mag bench. With time, we had difficulties seeing the required numbers of SDH on the Ketos ring. We ended up opening the machine, cleaning it up and retightening all the wires and cables. This made a difference and got our bench back to specs.

Maybe you should take a look at the contacts and wires of your black light.

Just a suggestion.

 
 Reply 
 

Product Spotlight

NDT.net launches mobile-friendly design

NDT.net has revamped its website providing a mobile-friendly design.The front page received a comp
...
letely new design and all other sections are now reacting responsively on mobile devices. This has been a major step to make our website more user- friendly.
>

Immersion systems

ScanMaster ultrasonic immersion systems are designed for high throughput, multi shift operation in a
...
n industrial or lab environment. These fully integrated systems provide various scanning configurations and incorporate conventional and phased arrays technologies to support diverse applications, such as inspection of disks, bars, shafts, billets and plates. All of ScanMaster immersion systems are built from high accuracy scanning frames allowing for scanning of complex parts and include a multi-channel ultrasonic instrument with exceptional performance. The systems are approved by all major manufacturers for C-scan inspection of jet engine forged discs. Together with a comprehensive set of software modules these flexible series of systems provide the customer with the best price performance solutions.
>

Combination of Digital Image Correlation and Thermographic Measurements

The combination of measuring results from the digital image correlation (ARAMIS, DIC) and temperat
...
ure measuring data from infrared cameras permits the simultaneous analysis of the thermal and mechanical behavior of test specimens in the materials and components testing field.
>

Conformable wedge transducer

The conformability is obtained with a flexible membrane filled with water between the transducer and
...
the inspected component. The coupling between the membrane and the component requires a small quantity of water or couplant. The conformable wedge combines the acoustic performance of immersion technique with good coupling and low attenuation.
>

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