On-line Magazine 'Sensors & Transducers' (S&T e-Digest)
(ISSN 1726- 5479)
Vol. 67, No. 5, May 2006
Table of Contents
Sensor Systems for Corrosion Monitoring in Concrete Structures
It is a need of permanently embedded corrosion monitoring devices to monitor the progress of corrosion problems on a new or existing reinforced concrete structures before embarking on repair or rehabilitation of the structures. Numerous devices are available for investigating corrosion problems, because no single technique exists which tells an engineer what he needs to know, namely how much damage there is on a structure now and how rapidly the damage will grow with time. In this investigation the studies on the sensors systems based on the measurements of half cell potential of rebars inside the concrete, resistivity of concrete, corrosion rate of rebars by eddy current measurements and sensing of chloride ions are reported. An integrated system consists of above sensors are fabricated and embedded into concrete. The response from each sensor was acquired and analyzed by NI hardware through LabVIEW software.
K.Kumar, S.Muralidharan, T.Manjula1, M.S.Karthikeyan and N.Palaniswamy
Central Electrochemical Research Institute, Tamilnadu, India
1SASTRA Deemed University, Tamilnadu, India
Preparation of Oxygen Meter Based Biosensor for Determination of Triglyceride in Serum
A method is described for preparation of a dissolved oxygen meter (make Aqualytic, Germany) based triglyceride biosensor employing a polyvinyl chloride (PVC) membrane bound lipase, glycerol kinase (GK) and glycerol-3-phosphate oxidase The biosensor measures dissolved O2 utilized in the oxidation of triglyceride (TG) by membrane bound lipase, glycerol kinase (GK) and glycerol-3-phosphate oxidase (GPO), which is directly proportional to (TG) concentration. The biosensor showed optimum response within 10-15 sec at pH 7.5 and 39.5 ºC. A linear relationship was obtained between the (TG) concentration from 5mM to 20mM and oxygen consumed (mg/L). The biosensor was employed for determination of triglyceride in serum. The within and between batch coefficient of variation (CV) were < 2.18 % and < 1.7% respectively. The minimum detection limit of the biosensor was 0.35 mM. A study of interference revealed that ascorbic acid, cholesterol and bilirubin caused 13%, 15%, and 12% interference, respectively.The biosensor is portable and can be used outside the laboratory.
M D University, Rohtak 124001 Haryana, India
M. BHAMBI, MINAKSHI and C.S. PUNDIR
Magnetostrictive Position Sensor
CARY, NC – Building on its next-generation Temposonics® design platform, MTS Sensors introduces the new R-Series Synchronous Serial encoder (SSI) Interface position sensor. The latest development in magnetostrictive position sensing combines design and manufacturing enhancements resulting in the world’s fastest and most accurate magnetostrictive position sensor.
The R-Series SSI output sensor includes options for synchronized 7500 kHz update rates and position accuracy as low as +/-20 microns (+/-0.0008 inch.). MTS’ proprietary synchronization technology guarantees the most accurate position output while minimizing inherent system-related delays to produce smooth, precise velocity loop control ...
Product Marketing Manager
High Resolution Hollow Shaft Fiber Optic Rotary Encoder
Newbury Park, California, April 20, 2006 – Micronor’s new MR314 ZapFree High Resolution Fiber Optic Rotary Encoder is optimized for large drive applications requiring EMI immunity, high resolution (1024ppr), and convenience of a hollow shaft package. The ZapFREEд encoder’s totally passive design outperforms conventional optical or magnetic rotary encoders: wider temperature operation (-60°C/+150°C), outdistances copper encoder links (up to 1000 meters), immune to lightning/high-voltage static/plasma fields, radiation resistant plus intrinsically safe and ATEX compliant. Used with the MR310 Remote Encoder Interface Module, features include quadrature outputs, quadrature multiplier/divider, 24-bit absolute multiturn encoder emulation mode, two programmable analog outputs (4-20mA and +/-10V) plus RS232/RS422 serial interface ...
Vice President, Sales & Marketing, Micronor Inc.
Tel.: (805) 499-0114, fax: (805) 499-6585
Carbon Monoxide Sensor
Austin, Texas-based Nano-Proprietary, Inc.announced that its subsidiary, Applied Nanotech, Inc. (ANI) has developed a “Gated” metal oxide sensor for carbon monoxide (CO) detection and measurement. The gated approach allows the sensor to operate without heating, as compared with most Carbon Monoxide sensors which require heating the sensor to greater than 250 degrees Celsius.
The sensor is specific to carbon monoxide with no cross sensitivity to other gases and elements and can operate in extreme environments ranging from negative sixty degrees Celsius to one hundred and sixty degrees Celsius. The sensor also operates at low power, is easily portable, highly sensitive, and has a fast response/recovery time with instant-on operation ...
Dr Zvi Yaniv,
Nano Proprietary Inc.
Industry's First Intelligent LVDT Controllers and Indicators Simplify Application Set-Up, Offer Precise Output
Pennsauken, NJ, April 27, 2006 - Macro Sensors has designed a family of user-friendly digital controllers and indicators that can be used in virtually any industrial measurement and control application within the petrochemical, power generation, laboratory and manufacturing industries. Offering precise measurement for applications utilizing AC- and DC-operated LVDT (Linear Variable Differential Transformer) inputs, Macro Sensors Series DMC Dual Channel LVDT Controllers and Series DMI Single Channel LVDT Indicators offer user-friendly set-up with a scrolling display that actively prompts users through set-up. The DMC Dual Channel Controllers also offers a GUI interface, enabling operators to quickly program and view data through a computer ...
Macro Sensors, Inc.
High Frequency Primary Vibration Calibration System
SPEKTRA, introduces the CS18P HF, the world's only production Primary Vibration Calibration System for high frequency vibration calibrations. The CS18P HF Primary calibration system uses a laser vibrometer as the primary reference standard to accomplish absolute calibration of vibration transducers, calibrators and meters. The system achieves a frequency response range from 10 to 20,000 Hz for transducers with weights up to 200 grams, includes a resonant search capability to 50,000 Hz, and complies with ISO 16063-11. A high-frequency, air-bearing vibration exciter with vibration isolators is used to achieve the performance required and the low levels of uncertainty. The high performance standards achieved by this Primary calibration system are desirable for national metrological labs, calibration labs with outstanding quality demands, research and development facilities, and quality assurance departments at transducer manufacturers ...
SPEKTRA USA, 67 Woodhaven Dr,
Laguna Niguel, CA 92677,
CAN Specification Update
The CAN in Automation (CiA) organization has released the CANopen multi-level networking specification (CiA 400) and the CANopen application profile for road construction machine sensor systems (CiA 415). The documents are available for CiA-members. The CiA-400 specification supports the design of CANopen-based systems that use multi-level networks. It is possible to describe systems made by up to 127 CANopen networks. Each network may comprise up to 127 CANopen devices. The CiA-400 gateway is able to support up to 32 CANopen interfaces. It is possible to forward Service Data Objects (SDO) as well as Emergency messages. The NMT requests and the Heartbeat information are forwarded through the entire system by remote SDO. Process Data Objects (PDO) are limited to the local networks and are not forwarded. However, it is possible to map system variables into the local PDOs and handshake them to the next network level ...
CAN in Automation
OGC Requests Public Comment on Sensor Web Enablement Specifications
Wayland, Mass., April 5, 2006 – The Open Geospatial Consortium, Inc.(OGC) invites public comment on several candidate standards developed in the OGC's Sensor Web Enablement initiative. The OGC membership anticipates that these specifications will be adopted as OpenGIS® Specifications and that they will become widely used as open, international standards for Web-based registration, discovery, use and control of sensors, sensor systems, and sensor data stores ...
SENSORS MARKET TRENDS
MEMS Gyroscope Market is Expected to Reach 800M$ in 2010
MEMS gyroscope industry plans a high growth potential of the defence and low end automotive applications. The MEMS gyroscope market is expected to generate in the range of 800M$ value in 2010. During the mean time several challenges are identified: increasing number of gyroscope players and changes in the value chain due to patents and supply issues. In this context, Yole Development has edited a new report describing the current structure of the MEMS gyroscope industry, the applicative markets, the main business models, the main challenges and its potential evolutions ...
Communication & Sales Administration Manager
Tel.: (33) 472 83 01 90, fax: (33) 472 83 01 83
US Sensor Demand to Exceed $12 Billion in 2010
US demand for sensor products (sensors, transducers and associated housings) is projected to increase 3.7 percent annually to $12.1 billion in 2010, which represents a noticeable improvement from the 2000 to 2005 period. The improved outlook for many sensor-containing products (e.g., motor vehicles, aerospace equipment, industrial machinery and electronics) will support gains in sensor demand. The fastest growth will occur in sensors based on more advanced, sophisticated technologies and those sensors likely to be used in dynamic applications such as automotive safety and security systems, medical equipment, military and aerospace equipment, and information technology. These and other trends are presented in Sensors, a new study from The Freedonia Group, Inc., a Cleveland-based industry market research firm ...
Tel.: +1 440.684.9600, fax: +1 440.646.0484
New Nanotechnology Analysis: Tiny Tech Brings Huge Changes
NEW YORK, NY – March 27, 2006 – The Center for Responsible Nanotechnology (CRN) today announced its first series of new research papers in which industry experts predict profound impacts of nanotechnology on society. Eleven original essays by members of CRN's Global Task Force appear in the latest issue of the journal Nanotechnology Perceptions, published today. From military and security issues to human enhancement, artificial intelligence, and more, these papers give readers a peek under the lid of Pandora's box to see what the future might hold ...
Center for Responsible Nanotechnology
Tel.: +1 718 398 7272
Multisensor Data and Information Processing
(Special Issue, August 2005)
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