On-line Magazine 'Sensors & Transducers' (S&T e-Digest)
(ISSN 1726- 5479)
Vol. 61, No. 11, November 2005
Table of Contents
Digital Magnetic Sensors Based on Universal Frequency-to-Digital Converter (UFDC-1)
The application specific paper describes a design approach for digital magnetic sensors Practical realizations are based on the Universal Frequency-to-Digital Converter (UFDC-1). By eliminating the need for ADC, the frequency- or duty-cycle-to-digital conversion schemes reduce the systems complexity. The results of such design approach are high-performance digital magnetic sensors with truly digital output (RS-232 interface) or bus output (SPI or I2C) at significant reduction of production cost, time-to-market and simplification of the design process. Practical examples of direct interfacing of duty-cycle and frequency output magnetic sensors to the UFDC-1 are given.
Sergey Y. Yurish
Institute of Computer Sciences and Technologies,
National University Lviv Polytechnic,
Bandera str., 12, 79013 Lviv, UA
Tel.: +380 502280003, fax: +380 32 29754125
Testing of Sensors and Measurement Transducers for Real Measurements
The latest developments in the field of dynamic mechanic measurements, including special solutions for the accuracy measurements, have made it possible to establish a uniform methodology, covering a variety of motion quantities, parameters ranges and time dependencies. An example is described in this article.
George A. Abramchuk
Measurement Technologies and Advanced Applications,
New Range of High Accuracy Load Cells Offers Self-calibrating
According to IEEE 1451 Standard
Transducer solutions specialist RDP Electronics Ltd introduced a new, highly accurate range of competitively priced load cells, ideally suited for research, testing, batch weighing and OEM applications. It uses the very latest technology in self-calibrating sensors, based upon the IEEE P1451.4 standard for Transducer Electronic Data Sheets (TEDS) ...
Technical Marketing Ltd.,
235A Heath Road, Leighton Buzzard, Beds. LU7 3AG
Tel.: 01525 854672
Implantable Wireless Pressure Sensors for Treatment
of Congestive Heart Failure
Integrated Sensing Systems, Inc. (ISSYS) in Ypsilanti, Michigan, and Wayne State University (WSU) in Detroit, Michigan have announced that they have been awarded a grant from the Michigan Technology Tri-Corridor Fund (MTTC) for "Congestive Heart Failure Monitoring Using an Improved Wireless Intraventricular Pressure Sensor". The MTTC award over the next two years provides 50% of the funding required for this $2,000,000 project, with ISSYS and WSU each providing the remaining 25% ...
Dr. Nader Najafi
Integrated Sensing Systems, Inc., Ypsilanti
Tel.: 734-547-9896 ext. 103
15 to 30 V DC Spring-Loaded DC-LVDT Position Sensors Prove Highly Accurate
and Compatible with PLCs
Pennsauken, NJ, November 2, 2005 - Macro Sensors, a division of Howard A. Schaevitz Technologies, introduces a new line of 24V DC-operated spring-loaded LVDT position sensors ideal for a variety of position measurement and dimensional gaging applications. The GHSE/GHSER 750 Series LVDT position sensors operate from 24V DC, delivering an output of 0-10V DC over the full sensing range. One of the new features of these units is their ability to be powered directly from a PLC power supply.
Constructed of stainless steel, the GHSE/GHSER 750 Series LVDT position sensors are rugged, read-to-use, hermetically sealed ľ” sensors. For added protection against harsh industrial environments, coil windings are sealed against hostile environments to IEC standard IP-68. Electrical termination of GHSE and GHSER configurations utilize MIL spec sealed connectors. The GHSER units have radially-mounted connectors that shorten the installed length of DC LVDTs for use in locations with space restrictions. A detachable mating connector, supplied with every unit, permits repair or replacement of damaged or severed cables without the need to replace the entire LVDT, as with units having integral cables.
The GHSE/GHSR 750 Series DC-LVDT position sensors generate a true pre-calibrated 0 to 10V output. Available in ranges of 0.100 inches (2.5 mm) to 4.00 inches (100 mm), these spring-loaded DC-LVDT position sensors offer repeatability of 0.000025 inches with non-linearity less than or equal to +0.10% of FSO ...
U.S. Route 130 North, Bldg. 22,
Pennsauken, NJ 08110-1541
Fast Oxygen Sensor for Gas Analysis
Sentronic presents the SentrOxy OEM GC 212 PFT fast oxygen sensor for gas analysis. Now it is in size-optimised version and robust electrical signal line. The main advantages of the optical oxygen sensor are the fast response time below 50ms, the usability direct in the mainstream and the possibility to change the contaminated sensitive cap. The new version offers now a size optimisation. Off course it is possible to use this technology for other application like intensive care. The sensor is adapted on an complete pulmonary diagnostic system to determinate of static and dynamic lung volume, the capnogram and a real-time oxygram ...
Gostritzer -Str. 61-63,
Tel.: +49-351-871 8653
Fax: +49-351-871 8465
Methanol Concentration Sensor
Integrated Sensing Systems, Inc. (ISSYS) in Ypsilanti, Michigan, announced the small methanol concentration sensors under development, targeting the active Direct Methanol Fuel Cell (DMFC) market. These small sensors can also be utilized in a variety of other industrial and analytical applications for the need of a low-cost, accurate, small, inline density or chemical concentration sensors.
ISSYS' sensors are based on Micro ElectroMechanical System (MEMS) technology. This microfluidic technology offers advantages in system and sample size, cost and reliability over current approaches to fluidic density, methanol concentration and chemical concentration measurement.
The use of a methanol concentration sensor is essential for the practical application of a variety of DMFC technologies. Currently ISSYS' technology offers the only efficient solution for the DMFC application, particularly due to its outstanding accuracy, stability and potential low cost. Furthermore, unlike previous methanol concentration sensors, ISSYS' products operate over a wide temperature range and are not sensitive to chemical impurities.
Fuel cells offer a big improvement in portability over conventional battery packs. Applications for DFMC technology include laptop computers, PDAs, camcorders and other portable consumer electronics ...
Integrated Sensing Systems, Inc.(ISSYS), Ypsilanti
Tel.: 734-547-9896 Ext. 119
Updated Color Sensor Evaluation Board
MAZeT offers update of colour sensor evaluation board MTCS-ME1. Modern software for JENCOLOUR(R) colour sensor evaluation board MTCS-ME1 now available. The MTCS-ME1 is now available in a new design and with new functions. "We couldn't bear to hold back details of the new evaluation board features from our customers until the Autumn 2005 trade fairs, e.g. VISION." says Dr. Winfried Mahler, head of optoelectronic distribution at MAZeT GmbH. Going by the name 'modEVA-Software', the customer receives an expanded software package that combines the following innovations in firmware update FWRev2.2x and SWRev1.42:
The MTCS-ME1 delivery package includes a digital base board with USB interface (alternatively IІC or RS-232), a range of different application-specific sensor boards as plug-in modules with light sources, sensors and amplifiers and PC software for sensor calibration, and measured value display (RGB, xyz, xyY, CIE Lab, L*u*v*) ...
Marketing Services, MAZeT GmbH
Tel.: +49 3641 2809-39
Fax: +49 3641 2809-12
New Guided Wave Radar Level Transmitters Feature All-Digital Design
Chicago, IL (October 25, 2005)- K-TEK announced at ISA 2005 the new MT5000 Series of Guided Wave Radar Level Transmitters. Designed for use in a variety of harsh environments, such as oil & gas processing and power generation, the series includes the MT5000 Liquid Level Transmitter and the MT5100 Level and Interface Transmitter. Both devices feature an integrated graphic display for quick and easy viewing of waveform screens. A concentric waveguide directs the radar beam, alleviating divergence problems and echoes from tank walls and surrounding structures. In addition, the devices are unaffected by variations in specific gravity due to temperature or pressure changes, and accurate level measurements are provided even with widely varying temperatures and pressures: up to 5000 psi (344 bar) or 800oF (427oC). The MT5100 also features a patent-pending interface weak signal detector that is able to detect the possible presence of a rag layer before emulsions can become a problem ...
Director of Marketing & Customer Service, K-TEK
18321 Swamp Road, Prairieville, LA 70769 USA
Tel.: +1 225.673.6100
Fax: +1 225.673.2525
Tri-Colour Multi-Function Indicator Suitable for Wide Range of Control
and Measurement Applications
Vydas International Marketing has announced the release of the new MICRA-M multi-function TRI-COLOUR digital indicator, extending the range of their Kosmos digital panel meters. These new instruments manufactured by DITEL, offer the latest technologies and multi-function capabilities in the new MICRA series and are suitable for a wide range of industrial control and measurement applications.
The new Ditel MICRA-M is a multifunction indicator/controller which is programmable by front panel buttons or software for Load Cells, Process and Temperature. It has a large bright TRI-COLOUR display with programmable colours which may be chosen from GREEN, ORANGE and RED for each phase of measurement, programming or alarms. With a Display ± 19999 (4Ѕ digits), the instrument is easily scaleable and offers TARE, PEAK/VALLEY and FILTER functions, as well as 12 user programmable logical functions. The power supply is a universal type (85-265 Vac/100-300 Vdc) or alternatively low tension (21-53 Vac/10.5-70 Vdc), The new MICRA-M offers the possibility of three simultaneous output options. Contact: with two relays, four Relays, four optocoupler PNP type or four optocoupler NPN type. Communication: with RS232C, RS485 (MODBUS RTU Protocol) and Analog Outputs: 4-20 mA or 0-10 V. The instrument is totally configurable from the front panel or from a PC with free set up software and offers a resolution of ±15 Bits and segments linearization (10 segments).
In addition, FREE Ditel Capture software has been developed for the family of Kosmos digital panel meters fitted with appropriate output card interfaces and allows connection for 1 to 32 different models including PICA100-P, MICRA_S, ALPHA_S, BETA_S and KAPPA. This new data acquisition software is the perfect simple solution to monitor and control any industrial process (and its subsequent analysis), which requires data to be recorded and a graphical representation of its data. The MICRA-M multifunction instrument will eventually replace MICRA-P, C and T, as now all in one instrument, users will have the full benefits of previous models as well as additional features ...
VYDAS INTERNATIONAL MARKETING
Swan House Passfield Business Centre, Lynchborough Road,
Passfield, Hants, GU30 7SB United Kingdom
Tel.: 44 (0)1428 751822, fax: 44 (0)1428 751833
ENDEVCO Partners with Cambridge Vibration Maintenance Service to Provide Calibration
and Repair Services in UK
ENDEVCO Corporation announced that, as part of its commitment to supporting its European clients, the company has entered into a partnership with Cambridge Vibration Maintenance Service (CVMSL). CVMSL will provide calibration and repair services for ENDEVCO products in the United Kingdom.
“This is one more step forward in increasing our customer support in Europe, and CVMSL is a logical partner based on their experience and knowledge of our customers’ service requirements,” said Rob Meyer, president of ENDEVCO.
CVMSL combines technical expertise with the dedication of field service engineers to provide customers with total support for vibration testing needs from the supply of spare parts to complete vibration test systems. It carries a comprehensive stock of replacement field coils, armature rewinds and spare parts for all makes of vibration testing equipment.
In addition to the calibration, repair and field services to be provided by CVMSL, ENDEVCO has technical support centers in London, Barcelona, Paris, and Nuremberg. This technical support, combined with a network of direct sales staff and a distribution center in Germany, helps form the solid foundation for ENDEVCO’s increased presence in and focus on the European test and measurement market ...
Wendi R. Burke, Communications Manager
Multisensor Data and Information Processing
(Special Issue, August 2005)
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