Product category:
Humidity and Environmental Sensors
News Release from: Beko Technologies | Subject: Beko Technologies dew point sensors
Edited by the Engineeringtalk Editorial
Team on 21 March 2007
Sensors reliably detect dew points
Unlike the conventional open-pored aluminium sensors, Beko Technologies' capacitive polymer sensors function with a closed condenser.
Dew point measuring devices detect the formation of moisture in compressed air systems - one of the greatest risks to process reliability By employing capacitive polymer sensors, a new generation of measuring devices achieves a faster response time and produces results that are noticeably more reliable
This article was originally published on Engineeringtalk on 11 Aug 2000 at 8.00am (UK)
Related stories
Adsorption dryers cut compressed air costs
Beko's new Drypoint AC cold-regenerated adsorption dryers help prevent corrosion, rejects or damage on the production line with reduced treatment costs and increased reliability.
Air contamination remover in smaller size
Beko Technologies has just introduced a new version of its Bekosplit compressed air, condensate and emulsion splitting plant, which is ideal for smaller applications and installations.
Unlike the conventional open-pored aluminium sensors, Beko Technologies' capacitive polymer sensors function with a closed condenser.
The cover electrode is penetrated solely by water vapour (and not by further particles which possibly exist in the air) by way of diffusion.
The vapour accumulates reversibly on the polymer, whereby the capacity of the sensor changes.
Further reading
Revised performance figures for condensate drains
Beko Technologies has just released revised performance figures for its Bekomat series condensate drains and Owamat oil and water separators based on over 12 years practical operating experience
Compressed air process control problems solved
Beko Technologies has launched a new Talkback service through its website, where UK companies can post problems or technical difficulties they are having in compressed air process control.
On the even surface of the capacitive sensor, dust, dirt, oil and other substances may, in the worst case, settle but not enter the sensor.
Misinterpretations are thus reduced to an absolute minimum, as merely the indiffused water vapour exerts influence on the measuring effect.
Beko Technologies' devices also have extremely short response times, compared with devices where aluminium oxide sensors are used.
In the polymer sensor, droplet formation does not exist, as water enters and exits exclusively in the form of vapour.
This means the adaption time is shorter, a change in the humidity conditions will be indicated very quickly.
At an incoming flow of more than three litres per minute, the response time amounts to just about 15 seconds.
With three versions in all, two stationary and one mobile model, the Beko devices cover a pressure dew point measuring range of -80 to up to +50 C.
Whilst the first stationary system with a PDP range of -10 to up to +50 C is particularly suitable for the application subsequent to refrigeration drying, the second permanent installation device with a PDP measuring range between -80 and +20 C is the right choice for the combination with membrane and absorption dryers.
The mobile measuring device is suitable for the entire range of the aforementioned temperatures and can be connected safely and easily at any point in the pipework, using a quick coupling.
All three models are ready to use when supplied, with the stationary versions prepared for wall mounting.
They only need to be connected with the electric mains using the plug.
The mobile device has an internal, rechargeable storage battery with a long service life.
Dataloggers are available for all models, should the results need to be recorded and studied. Request a free brochure from Beko Technologies ...
• Beko Technologies: contact details and other news
• Email this article to a colleague
• Register for the free Engineeringtalk email newsletter
• Engineeringtalk Home Page
