Chemical Engineering :: Chementator :: Sensors http://www.che.com Chemical Engineering en-us 2013 Thu, 23 May 2013 8:02:21 EDT Sensors with a transmitter built in Last month, Krohne Messtechnik GmbH (Duisburg, Germany; www.krohne.com) launched SmartSens, the first family of two-wire, loop-powered analytical sensors with integrated transmitter technology. Prior to this, analytical sensors have required an external proprietary transmitter onsite to deliver the sensor... http://www.che.com/chementator/sensors/10441.html Wed, 1 May 2013 0:00:00 EDT New GC based on resonating nanosensor A newly launched gas chromatography (GC) device from Analytical Pixels Technology (APIX; Grenoble, France; www.apixtechnology.com), called GCAP, uses a nanoscale silicon-beam resonator to detect mass. A piezoelectric cross-beam initiates the vibration of the nanoscale silicon resonator, and the resonance... http://www.che.com/chementator/sensors/10367.html Mon, 1 Apr 2013 0:00:00 EDT Quantum clusters serve as ultra-sensitive detectors Detection of extremely small quantities of dangerous or hazardous substances is important in many areas, including national security, safety of public utilities and radiation prevention. Several analytical methods have been developed using structural, functional and electronic properties of nanomaterials. In... http://www.che.com/chementator/sensors/10369.html Mon, 1 Apr 2013 0:00:00 EDT Detecting sub-50-nm particles in ultrapure water A new particle-size measurement technique has been developed and used to evaluate filter retention efficiency for particles with an average diameter of 12 nm by C.T. Associates Inc. (Eden Prairie, Minn.; www.ctassociatesinc.com) and W.L. Gore and Associates (Newark, Del.; www.gore.com). Scientists at C.T... http://www.che.com/chementator/sensors/9530.html Wed, 1 Aug 2012 0:00:00 EDT A more sensitive sensor for ions in solution A research team from the Institute for Photonics and Advanced Sensing, and the School of Chemistry and Physics, the University of Adelaide, South Australia (www.adelaide.edu.au) has combined suspended-core microstructured optical fibers (MOFs) with photoinduced electron transfer (PET) to demonstrate a new... http://www.che.com/chementator/sensors/9284.html Tue, 1 May 2012 0:00:00 EDT pH Electrodes and Temperature Dependence Acidity is a critical parameter in the chemical process industries, and accurate measurements of pH can be important indicators for process quality control. This one-page reference provides a refresher for the operation of pH electrodes and how to account for the temperature dependence of pH.... http://www.che.com/chementator/sensors/8936.html Wed, 1 Feb 2012 0:00:00 EST