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measured properties:
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Sensors for position,
dimension
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angle sensors, displacement sensors, distance sensors, gap sensors, inclination sensors, light barriers,
limit / position indicators, position sensors, proximity switches,
tilt sensors, etc...)
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Sensors for mechanical /
dynamic properties
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acceleration sensors, force sensors, inertial sensors, motion
sensors, rotational sensors, speed sensors, strain sensors, torque
sensors, vibration sensors, yaw rate sensors, etc...)
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Sensors for pressure, flow
and level
(e.g.:
absolute pressure sensors, differential pressure sensors, flow sensors,
gas flow sensors, gas pressure sensors, level sensors,
liquid level sensors, mass flow sensors, microflow sensors, etc...)
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Sensors for chemical,
biological & environmental properties
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air quality sensors, alcohol sensors, ammonia sensors, carbon
dioxide sensors, chemical sensors, chlorine sensors, environmental
sensors, gas sensors, ozone sensors, oxygen sensors, etc...)
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Sensors for temperature,
humidity, weather, environment
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air pressure sensors, atmospheric sensors, climate sensors, dew
point sensors, humidity sensors, meteorological sensors, rain
sensors, solar sensors, temperature sensors, wind sensors, etc...)
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blood analysis sensors, blood flow sensors, blood pressure sensors,
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identification sensors, Human motion sensors, etc...)
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electrical sensors, magnetic sensors, current sensors, eddy current
sensors, magnetic field sensors, eddy current sensors, electrical
field sensors, voltage sensors, etc...)
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counting and comparison
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camera sensors, image sensors, code detection sensors, object
comparison sensors, object counting sensors, object identification
sensors, etc...)
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Sensors for acoustic
properties
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noise sensors, loudness sensors, microphone sensors, sound analysis
sensors, ultrasound sensors, etc...)
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piezoelectric sensors, strain gauge elements, thermocouples,
ultrasound sensors, ...)
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Wireless Sensor Networks
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Convincing Bypass System from KROHNE |
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For level measurement in bypass systems, KROHNE now offers a
convincing solution. Devices which are proven in practice are combined
with the New Level generation. The new BM 26 W and BM 26 F may be used
in a variety of applications in the Petrochemical Industry, e.g.
processing of hydrocarbons, liquid gas or steam. |
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BM 26 W comprises the well-tried BM 26 and OPTIWAVE, the FMCW level
radar. The standard device provides a mechanical indication as well as a
transmitter output. BM 26 F is combined with the OPTIFLEX TDR guided
radar. It measures the level on a bypass chamber uninfluenced by the
density of the product. Both level devices are applied up to
temperatures of 200°C and pressures of 40 bar. ... |
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Sensor news
& technical articles
in weeks 05-06/2006: |
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Interface measurement with OPTIFLEX |
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Interfaces can now be measured up to a distance of 20m with OPTIFLEX,
the guided radar (TDR) from KROHNE. Tests at Onyx, Norway’s
leading waste management and recycling company have been successfully
completed. For measuring interfaces two reflections have to be
evaluated. |
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On the one hand the level pulse and on the other hand the interface
pulse has to be analyzed, which will, as a matter of course be
absorbed by the product.
The double cable as well as the coax version provide a stronger focused
pulse and therefore a bigger signal amplitude than common level devices.
OPTIFLEX features a 2 GHz bandwidth, which is approximately twice as
high as normal and produces considerably slimmer pulses and allows
detection of interfaces to a minimum layer thickness of 50mm. Until
recently the maximum length of the double cable and therefore the
possibility of measuring interfaces was restricted to 8m due to physical
reasons. ... |
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Synkera announces working agreement with Atmospheric Sensors LLC |
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Synkera Technologies Inc. is pleased to announce
the formation of a working agreement with Atmospheric Sensors LLC (ASL)
of Pennsylvania. Atmospheric Sensors LLC is a company with the expressed
purpose of developing a new generation of solid-state gas sensors and
was co-founded by Patrick Moseley and Michael Stein. Patrick Moseley has
extensive experience in the design of solid-state chemiresistive gas
sensors and is well known in the chemical sensor industry as one of the
pioneers in this technology. Most of the metal oxide sensor technology
on the market today is based on tin oxide a sensing material that has
severe performance limitations. ASL has been able to exploit a wide
range of response characteristics based on the use of higher performing
alternative materials. ASL will be working with Synkera to fabricate
production volumes of these sensors for distribution into the market.
Synkera and ASL believe that this new family of Metal Oxide Sensors will
greatly out-perform existing metal oxide sensors available today and
will open up new markets for this inexpensive sensor type. ... |
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New Model 379A01 Array Stand Accommodates
up to Sixteen Microphones |
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February 1, 2006, Depew, NY, USA – The Vibration Division of PCB
Piezotronics, Inc. (PCB®) announces the addition of the Model 379A01
Microphone Array Stand to its growing line of acoustic measurement
products. The Model 379A01 array stand includes the grid and all
necessary configuration hardware for proper mounting of a 16-microphone
array with 8 cm spacing. |
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To optimize design flexibility, the 379A01 can be used as 1 x 16; 4 x 4;
or 2 x 8 grid configurations; arrays are adjustable both horizontally
and vertically; rotated; or can be tilted forward and backward. A
built-in inclinometer attached to the grid base enables the user to
verify angles used for measurement, and ensures any subsequent
measurement configurations can be replicated identically. Associated
microphones, power supplies and cabling can be purchased separately or
as a kit, to satisfy system requirements. The kit contains the
microphones and sufficient 6.1 m (20-ft) microphone cables, for
connection to an included patch panel and accompanying 7.6 m (25 ft)
ribbon cable. ... |
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Explosion-protected gas measuring system
with one-man calibration |
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Calibration and maintenance of gas measuring systems in potentially
explosive areas are often complicated and expensive: As they can usually
be carried out at the open device only, the plant has to be turned off
to create a safe atmosphere and to prevent ignition by sparks. |
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Therefore, J. Dittrich Elektronic manufactures the
explosion-protected gas measuring system MF420-Ex (according to
ATEX100a). MF420-Ex allows a one-man calibration in a potentially
explosive atmosphere with the help of two covered pushbuttons, synthetic
air and test gas, without having to open the housing. A four-digit,
alphanumeric display indicates the measured values as well as possible
malfunctions of the sensor and the electronics. MF420-Ex is either
equipped with a pellistor or an electrochemical sensor. Basic processing
and output (linear, 4-20 mA) of the measured values are integrated. ... |
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KROHNE differential flowmeters at HKM |
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Hüttenwerke Krupp Mannesmann GmbH (Duisburg) employs a total of 60
OPTIFLUX electromagnetic flowmeters from KROHNE to measure flow
rate differences in the cooling water circuit of blast furnace B. |
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The aim is to detect leaks at the blast furnace tuyères as early as
possible.
These nozzles are arranged in a ring in the wall of the blast furnace
and blow hot wind at a temperature of 1300° C into the furnace for the
reduction process. Each of the tuyères comprises two chambers and has a
water cooling system to prevent damage being caused by the hot melt that
would result in leaks. Such leaks inevitably lead to water entering the
blast furnace, with a deterioration in the quality of the steel at best,
and an oxyhydrogen gas explosion that can destroy the furnace at worst.
Differential flow measurements are generally difficult because the water
volume to be measured lies in the range of the measuring uncertainty.
... |
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New Model 426B02, ½” In-Line A-Weight
Filter |
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February 1, 2006, Depew, NY, USA – The Vibration Division of PCB
Piezotronics, Inc. (PCB®) introduces Model 426B02, 1/2” in-line
A-Weight filter, which operates from ICP® sensor power and is designed
to work with prepolarized microphones. The human ear naturally
attenuates certain frequencies. |
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This filter is designed to simulate how a sound pressure level, at
different frequencies, would appear to a normal human ear.
It is commonly used in automotive, aerospace, and appliance testing
applications, among others, where manufacturers are concerned about how
the human ear perceives sound pressure levels at the different
frequencies generated by their products. The goal is for safety or to
make the sound as pleasing to the ear as possible. The Model 426B02 can
be attached directly to the ½” preamplifiers BNC connector, or between
the preamplifier and a 4 to 20 mA constant current supply, via low cost
coaxial cables. This ICP® design allows for significant savings in power
supply and cabling cost, greater ease-of-use and operates from the same
power required for ICP® accelerometers. ... |
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Long term fatigue testing with DSCC load cells |
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The DSCC low profile “pancake” style load cells from
Applied Measurements are providing aerospace engineers with a
solution to long term fatigue testing of aircraft structures. For this
application the requirement was to find load cells of high capacity and
low profile that could be used over a long period involving many
millions of cycles. Following initial trials the DSCC load cells were
chosen both for their performance and that some custom requirements
could be accommodated. The load cells were supplied bolted to mounting
bases making them suitable for use in both tension and compression. In
the application they are mounted between hydraulic actuators providing
the force and the aircraft structure. They have two separate strain
gauge bridges one for controlling the actuators and the other for
measuring the force being applied to the structure. ... |
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Air quality signal creates good working
climate |
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Not only the stressful job makes people tired at their workplace but
also the “stuffy” air, produced from the exhaled carbon dioxide (CO2).
Although it is only toxic at high concentrations, it can induce such
disorders as headaches and fatigue at considerably lower concentrations. |
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This problem can easily be resolved with systematic airing. But when and
for how long?
As humans can neither smell nor taste CO2, the air quality signal from
J. Dittrich Elektronic is of help here. The device fast and
precisely detects with the help of a patented infrared system the CO2
content in the ambient air and signals, how stuffy the air is. Green
light indicates good air quality, yellow light means air of medium
quality and red light signals bad air quality. The window should be
opened by now at the latest. The air quality signal is ready for
operation, maintenance-free, long-term stable and cost-effective. ... |
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Sensor News in
week 03-04 '2006
<<
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Sensor News in week 07-09 '2006 |
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