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limiteur de puissance
report déporté
Oct 8, 2010 15:40
13 yrs ago
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French term

lame vibrante

French to English Tech/Engineering Mechanics / Mech Engineering
This is from a set of guidelines for nuclear safety inspectors, in the section on containment and leak detection. One of the tools used in the containment areas uses a "lame vibrante." I'm not sure how a vibrating blade would come in here...

Thanks in advance! For liquid detectors, they check:

type (poire, lame vibrante), niveau (haut, très haut)
Proposed translations (English)
4 vibrating fork probe/switch, vibration sensor
1 +1 reed

Discussion

chris collister Oct 11, 2010:
It may be worth adding that some liquids are very foamy so there are effectively 3 layers: liquid, foam and gas (air). When immersed in foam, the tuning fork will alter its frequency and amplitude less dramatically than in pure liquid. It is sometimes useful to know the presence and extent of such foaming.
chris collister Oct 8, 2010:
I think it would have to be a level sensor: since the viscosity (and mass) of a liquid is generally a couple of orders of magnitude greater than air, any contact with said liquid will either stop the vibration completely, or at least cause a massive change in frequency and amplitude. As far as I'm aware, this type of sensor triggers when the level reaches a particular value, and does not continuously measure the level as it alters. For this, capacitive, ultrasonic or microwave probes are generally used.
Bashiqa Oct 8, 2010:
Hi,
Are we talking about a vibrating tuning fork type apparatus for detrmining the depth or level of the liquid?

Proposed translations

5 hrs
Selected

vibrating fork probe/switch, vibration sensor

Mini Squing, the latest generation VIBRATING FORK LIQUID LEVEL SWITCH from Mobrey is small, light, robust and easy to install. It comes complete with an on-board microprocessor, self-monitoring and fail-safe functions and it costs significantly less than previous switches of this kind
http://www2.emersonprocess.com/en-US/brands/mobrey/Level-Pro...

1. Squing Mobrey VIBRATING FORK LIQUID LEVEL SWITCH - Warren Bestobell
The fact that Squing is vibrating normally when dry makes it ideal for use in high-level detection applications. Any change in frequency, however caused, ...
www.warrenbestobell.co.uk/Controls/Squing.asp

Note this Radiospares item 4572032 in French and English:

DÉTECTEUR VIBRANT série Vibracon
Capteurs de niveau liquide / solide vibrants - Squings
Ces capteurs ne nécessitent aucun entretien et sont équipés d'une indication d'état du commutateur par une LED externe.
• Capteur de niveau le liquides à LAME VIBRANTE
http://radiospares-fr.rs-online.com/web/search/searchBrowseA...

'Vibracon LVL-T1’, VIBRATION LEVEL PROBE
Both types of 'Vibracon' probe are manufactured from stainless steel and are suitable for use on all liquids, they can be mounted on any plane and operate as limit switches. No calibration or maintenance is required
All of these probes are maintenance free and have external LED switch status indication
Switching time 0.5s covering forks, 1.0s uncovering forks

http://az.rsdelivers.com/product/pepperl-fuchs/lvl-t1-g3s-e5...

All the tech. details in English here:
http://docs-europe.origin.electrocomponents.com/webdocs/025a...
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4 KudoZ points awarded for this answer. Comment: "Thanks for this very detailed answer!"
+1
2 mins

reed

I have seen this term refer to a reed before. Perhaps in a more traditional sense a 'reed' could be used to measure leakage (by absorbing liquid or solid matter into the reed and showing the level of leakage??), although this is more in the field of electronics - just in the same way that if you dip paper into a liquid it will absorb a certain amount of it? Just a hunch, but it may well apply in this case.
Peer comment(s):
agree chris collister : Also referred to as "tuning fork" level sensors
40 mins
neutral Tony M : Just to note that this type of reed (as used e.g. in musical instruments) is a thin, flat blade, rather than a hollow straw-type reed.
1 day 3 hrs
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