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 -

YXLON International GmbH
484 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

GUL QSR1® Scanning

How do you measure pipe wall thickness without direct access to the area? QSR® Scanning - Guide Wav
...
e Quantitative Short Range Scanning.
>

High-performance Linear Phased Array Probes

Available to order from stock in a range of 5MHz – 7.5MHz and from 16 to 64 elements. Designed w
...
ith piezo-composite elements, Phoenix phased array probes provide high-resolution imaging to maximise sensitivity; accurate ultrasonic detection and sizing of defects in welds; and effective corrosion mapping. Housed in a rugged stainless steel case for on-site industrial NDT applications.
>

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
>

iProbe - USB Phased Array Probe

Turn your PC, Laptop or Tablet into a powerful 32:64 Phased Array system with our USB powered Phas
...
ed Array iProbe and inspection software package. Perform affordable weld inspection and corrosion mapping inspections with this powerful but small system. The probe has a 100V pulser, 8K PRF, dual axis encoder input and achieves outstanding signal quality.
>

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