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 -

926 views
Technical Discussions
aldo
Engineering
Italy, Joined Jan 2009, 39

aldo

Engineering
Italy,
Joined Jan 2009
39
12:04 Dec-05-2009
performance mercury vapour lamp

Hi everibody...
I readed the parameters that have influence on life mercury vapor lamp...They are:
voltage fluctutations, dirt on filters, tarnishing of reflectors, etc..
The question is:
Can have influence the type or the quality of the isotope mercury uses in lamps?
I do not read nothing on this issue and i want the your opinion if is possible..
tanks and best regards

    
 
 
Michel Couture
NDT Inspector,
consultant, Canada, Joined Sep 2006, 822

Michel Couture

NDT Inspector,
consultant,
Canada,
Joined Sep 2006
822
15:36 Dec-05-2009
Re: performance mercury vapour lamp
In Reply to aldo at 12:04 Dec-05-2009 (Opening).

Aldo,

I think what we are looking at here are the factors that will affect the longivity and the detectability of defect using a Black Light. Anything that is inside the glass shell is out of your control. Not only that, those lamps were manufactured according to a proven and quality control process.

What is important for us in regards to MT or PT is that the lamp be clean to allow maximum light emission therefore increasing your chance of detection. Also, dirt on the lamp and or on the filter also decreases its life because of the hot spots that it will create on its surface. It may results in a filter cracking for example, which could be dangerous for anyone that happen to be looking at the light. Mind you, why should you be looking at the light in the first place?

    
 
 
aldi
Engineering
Italy, Joined Jan 2009, 39

aldi

Engineering
Italy,
Joined Jan 2009
39
17:10 Dec-05-2009
Re: performance mercury vapour lamp
In Reply to Michel Couture at 15:36 Dec-05-2009 .

Hi michel,
I have done this question because in one quiz there was the answer where it spoke if the quality of isotope mercury has o has not any influence on quality and intensity black light and on its life...The correct answer was that on performance mercury vapour lamp was influence by type of isotope mercury....
Aldo

    
 
 
Michel Couture
NDT Inspector,
consultant, Canada, Joined Sep 2006, 822

Michel Couture

NDT Inspector,
consultant,
Canada,
Joined Sep 2006
822
22:04 Dec-05-2009
Re: performance mercury vapour lamp
In Reply to aldi at 17:10 Dec-05-2009 .

Aldo,

I totally agree with you if you look at it this way. Unfortunately, some people (the ones writing those exams) seems to really like to split hair and as you can see, I don't have much to spare. But seriously, they are technically right, yet as a technician doing a PT inspection it is not something you have control over. Like I said previously, the bulb is made a certain way, under specific control in the manufacturer's plant. In other word, you get what you get. As long as you buy the buld that is design for the lamp you are using, everything should be fine. What we have control over and what will affect our inspection is what we spoke about previously ie. cleanilness of the bulb and filter. Yet that is something that I find very few technicians do.

It's not like what some people ask about UT instrument. They have rechargeable 'D' cell batteries that cost an arm and a leg from a supplier, but what appears to be the same one at a local story is a third of the price. In this case, it is different. The difference in price very often is tied in with the amperage rating. So you have a choice: a) you buy the cheap battery that will last only two hours or b) the expensive one that will last you eight hours?

    
 
 

Product Spotlight

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.
>

MUSE Mobile Ultrasonic Equipment

The MUSE, a portable ultrasonic imaging system, was developed for in-field inspections of light-weig
...
ht structures. The MUSE consists of a motor-driven manipulator, a water circulation system for the acoustic coupling and a portable ultrasonic flaw detector (USPC 3010). The MUSE provides images of internal defects (A-, B-,C- and D-scan).
>

Cygnus 6+ PRO Multi-Mode Ultrasonic Thickness Gauge

The Cygnus 6+ PRO thickness gauge is the most advance gauge within the Cygnus range with key featu
...
res including: comprehensive data logging; A-scan and B-scan display; manual gain control; Bluetooth connectivity; and much more. With its unique dual display and three measuring modes (Multiple-Echo, Echo-Echo and Single-Echo), this surface thickness gauge offers maximum versatility for inspections.
>

Spot weld inspection with Phased Array – PHAsis.one

The first PAUT spot weld inspection device offering a physical resolution of the spot weld diamete
...
r better than 0.35mm. Precise: more than 700 real UT measurements per spot weld. Easy to go: minimal training required due to the user friendly inspection software. Be sure: safe evaluation due to the imaging result display and automated creation of an evaluation proposal for the spot weld 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
s