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Capacitive sensors,
capacitive measurement systems
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A
selection of recently
published
technical
articles, white papers, products
&
application examples: |
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| New
Capacitive Displacement Probes Expand Measurement Ranges and
Resolutions |
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 To
accommodate small spaces and larger measurement ranges,
Lion Precision has added to their
capacitive probe selection. New probes are available in
diameters of 3 mm, 18 mm and 25 mm. In addition to new
sizes, the probes use new design parameters that further
improve long-term stability, resolution and temperature
drift. On the small end of the spectrum, the new 3mm
diameter probes provide measurement ranges as small as
10 µm with resolutions less than 1 nanometer. The tiny
probes are only 15 mm long with right-angle or axial
cable exits for squeezing into very tight spaces. On the
larger end, the new 18 mm and 25 mm probes provide
measurement ranges as large as 12.5 mm while still
maintaining resolutions as low as 125 nm. “New design
approaches and new construction techniques have enabled
us to create these smaller and larger probes while
maintaining the high performance people expect from our
equipment,” says Lion Precision president, Don Martin.
He added, “What we learned will now trickle down into
our existing probe offerings giving improved performance
across the entire line ... |
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+ Info |
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| Space-saving and flexible capacitive sensor
for reliable object detection |
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 Baumer
launches the new CFDK 25 capacitive sensor for the
reliable detection of arbitrary objects in confined
spaces. The sensor is characterized by its very flat
housing and versatile mounting options. The very flat
housing design with a height of only 6 mm allows easy
installation e.g. beneath a low-rise conveyor belt. The
capacitive sensor can be countersunk flush and therefore
needs much less space than photoelectric sensors or
ultrasonic sensors. To further facilitate the
integration of the capacitive sensor into machines and
facilities, Baumer offers a matching innovative mounting
frame. Using this frame, the capacitive sensor can be
installed not only with screws but also with cable ties,
Velcro fastener or glue. The capacitive sensor can be
removed from and re-installed into the mounting frame
easily and without tools (snap-out/snap-in). Various
fixed sensing distances from 2 to 25 mm supersede a
potentiometer and turn the CFDK 25 into a plugand-play
solution. In order to guarantee a long product life also
under demanding conditions, the housing of the
capacitive sensor is made of the robust plastic Polyamid
12. ... |
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+ Info |
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Z-Height Measurement with Capacitive and Eddy-Current Sensors |
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 Lion
Precision: Z-height measurement, or any measurement of
critical position in one axis, is a common need in many
industries. Many engineers have struggled with trying to get an
accurate measurement of sufficient resolution while coping with
design requirements and implementation problems caused by
limited space, temperature changes, vacuum, target surface
interference, and damage to measurement probes resulting from
incidental contact with the target. Capacitive and eddy-current
noncontact displacement sensors are becoming a standard
technology for these applications because of their small size,
flexibility, ease of use, high resolution, and robust design.
Capacitive sensors and
eddy-current sensors can also be easily customized to fit in
specific applications. Technologies: Many technologies have been
applied to these measurements, each with its own set of
challenges. Contact gauging can damage target surfaces. Optical
gauging can suffer from thermal sensitivity, inconsistent
reflectivity of the target material, and may be difficult to fit
in the space required. Some capacitive technologies can suffer
damage to internal electronics if the end of the probe touches a
grounded surface. Lion Precision capacitive sensors and eddy-current
sensors are robust, thermally ... |
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+ Info |
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A
selection of recently
published
technical
articles & products:
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| Capacitive Proximity Sensor Resists Abrasion |
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 RECHNER:
Abrasive wear caused by contact with products such as
sand, grain or plastic shreds, damages the active
surface of many standard capacitive proximity sensors,
and finally destroys the sensor. Rechner Sensors offer
sensors where the active surface is ceramic making them
ideal for applications that involve the level control of
such abrasive bulk material. These capacitive sensors are available
in body sizes M30 x 1,5 and M32 x 1,5. ... |
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+ Info |
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| Capacitive Sensors - Classic
or Extra Small ? |
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 RECHNER:
Just which option is best for you
depends on the specific measuring task
and the space limitations that exist
with the application. We feel that space
should not be the issue and so offer you
a choice from our standard program: the
classic version with 70 mm body length
and the short version with 50 mm and now
an even shorter version with just 40 mm
body length. Flush and non-flush
mountable models / capactive sensors are
available. ... |
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+ Info |
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| Capacitive gap sensor |
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 The
new capacitive sensors from
Micro-Epsilon capaNCDT CSG are
specially developed to measure gap width. Sensor
electrodes are applied to the top front and back
on a circuit board that has a width of 20cm.
Using the sensor electrodes and the differential
method, the gap width can be determined very
precisely while moving the sensor into the gap.
A special feature is the sensor’s flexible
probe. This also enables the capacitive sensor
to be used in applications where the measurement
object is difficult to access. Using the
capaNCDT CSG, gaps of 0.9mm up to 4.9mm can be
measured at a resolution of up to 90nm. However,
metal objects and a clean measurement gap are
required for these capacitive sensors. In terms
of the electronics for the capaNCDT 6500,
signals of both electrodes are immediately
calculated with the gap width. Furthermore, the
sensor can be replaced or connected to any other
electronics supplied by Micro-Epsilon. With the
same sensor dimensions, the new capaNCDT CSE
offers a measuring range that is 2.5 times
larger. As the CSE capacitive sensors are
equipped with a shielding electrode which is set
back, the sensor dimensions are considerably
smaller. Therefore, these capacitive sensors
show significant benefits while also offering
the same measuring range. Since the capacitive
sensors are ... |
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+ Info |
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| Space-saving and flexible
capacitive sensor for reliable liquid level detection |
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 Baumer
launches the new CFDK 25
capacitive sensor for the reliable detection of
liquid levels in confined spaces. The sensor is
characterized by its very flat housing and versatile
mounting options. It detects liquids through container
materials. The very flat housing design with a height of
only 6 mm allows easy installation e.g. between a
container and the wall. To further facilitate the
integration of the capacitive sensor into machines and
facilities, Baumer offers a matching innovative mounting
frame. Using this frame, the sensor can be installed not
only with screws but also with cable ties, Velcro
fastener or glue. For
liquid level measurements at mobile repositories,
e.g. waste containers in lab automation, the same sensor
can be used for several containers where frames are
already attached. The sensor can be removed from and
re-installed into the mounting frame easily and without
tools (Snap in place). Four fixed sensing distances from
2 to 25 mm supersede a potentiometer and turn the CFDK
25 into a plug-and-play solution. In order to guarantee
chemical resistance and thus a long product life also
under demanding conditions, the housing of the
capacitive sensor is made of ... |
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+ Info |
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More technical articles & products to this topic:
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Find
all manufacturers and suppliers of
capacitive sensors |
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Overflow impossible – point level sensor LI |
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ifm
electronic: The new point level sensors
of the LI21 series are a reliable overflow
protection for liquids. Setting in the
application via two buttons and with a clearly
visible LED switching status indication only
takes some seconds. The new point level sensors
of ifm electronic approved as overflow
protection according to the German overspill
standard WHG section 19 monitor the overfilling
of tanks. Deposits or foam can be suppressed by
adjusting the unit, this provides additional
safety. Due to the capacitive operating
principle, the sensors are wearfree and have no
moving components. Moreover the new point level
sensor has a cULus approval. The plant builders
save time and money since this approval is the
prerequisite required for the access to the
North American and Canadian market. This
approval combines the CSA (Canadian Standards
Association) and the UL (Underwriters
Laboratories) ... |
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Capacitive Sensor Of RECHNER’s 26 Series With Remote Adjustment |
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Ask
for ETW (ETW = EasyTeach by wire) for more
convenience at your application. The 26 series
from RECHNER was originally
designed to cope with the problems of very
adhesive products. It turns out that these
capacitive sensors have excellent
characteristics for general use in level
control. Typically they overcome the problems
caused by products sticking to the sensor and
the need for continual re-adjustment. The
semiround sensor tip is a striking feature of
this series. The electronics are based on
RECHNER’s High Performance Technology and
guarantees high quality and reliability. The
capacitive sensors are available with various
process connections, such as Triclamp, G1“ and
M22. It is often a real challenge for the user
to achieve good level control in large silos or
in some containers with difficult access. A
direct adjustment of a sensor in the container
is often not possible. Reasons can be that the
access is dangerous for human beings or the
container is too high or possibly space is
extremely limited. For these situations
RECHNER-Sensors now offer capacitive sensors
with remote adjustment. ... |
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ZMDI ZSSC3122 capacitive sensor signal conditioner benefits MEMS,
industrial, harsh environments especially battery powered applications |
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ZMD
AG (ZMDI), a global
supplier of energy-efficient analog and mixed-signal
solutions for automotive, industrial, and medical
applications, has expanded its family of capacitive
sensor signal conditioners (SSCs) with the addition of
the wide-dynamic-range ZSSC3122 cLite device. New design
technology allows the integrated circuit to deliver
14-bit resolution and 0.25% full-scale-output accuracy.
Capacitive Sensor Benefits and Applications:
Capacitive sensors are often favored for their small
size and lower power consumption over resistive bridge
sensors. The ZSSC3122 supports this view with an
operating current as low as 60uA over the entire voltage
range of 1.8V to 5.5V. A built-in sleep mode lowers the
current consumption to <1uA for temperatures up to 85°C,
making the ZSSC3122 an excellent choice for all
low-power battery applications. The device is also ideal
for MEMS sensing elements, such as
pressure sensors for hydraulic control systems,
humidity sensors and
liquid level gauges. Capacitive sensors do not touch
or make direct contact with the system being sensed,
making them a preferred option for industrial linear and
angular position sensors and contactless
potentiometers, where harsh or explosive environments
make other sensor technologies ... |
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Capacitive Sensors with 50 mm Sensing Distance ! |
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Record
sensing distance with the new High Performance Proximity
Sensors from RECHNER. The M32 threaded
capacitive sensor with 5 cm active area allows a flush mounting
sensing distance of more then 50 mm. This corresponds to
5 times the Sn of a standard M30 sensor. The PEEK
covered active area offers excellent protection, since
this material is considered to be oil resistant,
resistant to nearly all chemicals, physiologically
harmless and it has very good mechanical
characteristics, like abrasion resistance. This 4-wire
DC capacitive sensor ... |
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Capacitive Proximity Sensors with Triclamp Process Connection For ATEX
Zone 20 |
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Great
News for the food and pharmaceutical industry.
RECHNER-Sensors now offer capacitive sensors
with a Triclamp process connection for ATEX Zone
20. These capacitive sensors are designed for
the level control of bulk materials. It goes
without saying that the sensors have PTFE and
stainless steel bodies which are allowed to be
in direct contact with food and pharmaceutical
products. In addition the sensors are suitable
for CIP up to 120°C and therefore suitable for
in-line cleaning and sterilisation. ... |
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Find
all manufacturers and suppliers of
capacitive sensors |
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Capacitive Proximity Switch Has High-Resolution Analog Output And User
Adjustments |
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The
CPA100
Capacitive Sensor from Lion Precision has a
setpoint (switched) output to indicate presence/absence like a
typical proximity switch, but the nonlinear analog output is
capable of resolutions as low as 15 nm RMS (150 nm p-p). The new
capacitive sensor features a unique front panel range indicator
to alert the operator to out-of-range conditions, DIN rail mount
electronics, and user adjustments for Offset (Zero) and Gain. A
selection of probes provides standard measurement ranges from
0.05 to 6 mm. Offset and Gain can also be controlled with remote
potentiometers if the device is enclosed in a control panel.
Sync connectors allow interference-free use of multiple sensors
with the same target. Typical applications for the CPA100,
besides basic position monitoring, include production line part
sorting; double sheet detection in printers or related
processes; and monitoring of processes involving nonconductive
materials ... |
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High Performance Capacitive Sensors |
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RECHNER
SENSORS are now offering an M12 version
of their new high performance standard. The new
format is available with an ultra-bright, all
round visible LED, and in a chemically resistant
housing. The capacitive sensors hava a medium
optimised adjustable sensing distance from 0.5
to 10 mm, and are ideally suited for the
detection of aggresive, highly viscous and
adhesive media, as well as light bulk materials,
such as ... |
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Capacitive Sensor for level monitoring of conductive products |
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RECHNER
SENSORS: Level control of extremely conductive
media is a recognised problem for a good many users.
Products that may appear to be non-adhesive can often
leave an almost invisible but highly conductive film on
the sensor body, making level monitoring extremely
difficult. The result can be a full signal even when the
container is empty. RECHNER-SENSORS has the solution.
The „Triple-G Series“ are especially designed for such
applications. These capacitive
sensors have PTFE bodies and are available
... |
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Green for go, Capacitive High Performance Sensors from
Rechner |
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| Sensing
distance indication (Si) is a new option available with
the capacitive High Performance Sensors from
Rechner. In addition to the green-yellow LED,
which as usual shows power-on and operation state, there
is a further green-yellow-red LED, which provides the
user with information about the adjusted sensitivity or
sensing distance. The LED is green when the distance is
set at a sensing distance up to the nominal sensing
distance for that sensor. Up to the maximum permissible
operating distance it is yellow. Finally the LED flashes
red when the sensitivity is adjusted too high, By means
of this optional feature all users can ensure that for
complete safety of their application green for go really
means just that. Literally within the green range, wrong
adjustment becomes a thing of the past. This feature is
available for
capacitive sensors from body size 30 mm. ... |
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Find
all manufacturers and suppliers of
capacitive sensors |
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World’s Smallest Capacitive Humidity Sensor from IST |
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| Innovative
Sensor Technology has added the World’s smallest
capacitive humidity sensor to its line of thin-film sensors.
Measuring just 1.85 mm x 1.85 mm, the P14 202 is capable of
measuring from 0 to 100% relative humidity in a temperature
range of -50°C to +150°C. The assembly of the sensor is fully
automated, and the contacts are designed for soldering and
bonding. Linearity Error and Hysteresis Less Than ±1.5% RH. The
employment of high quality materials and manufacturing
techniques has allowed IST to produce a thin-film humidity
sensor with miniature dimensions that features excellent
linearity and hysteresis behavior. The P14 202 offers a
linearity error of < ±1.5% RH (15 … 90% RH at 23°C, after one
point calibration), and hysteresis of < ±1.5% RH in a three hour
cycle between 20% and 80% RH. Unique Sensor Applications ... |
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Capacitive Sensors – EasyTeach – With Clear Text Display |
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| The 26 series from
RECHNER was originally designed to cope
with the problems of very adhesive products. It
turns out that these capacitive
sensors have excellent
characteristics for general use in level
control. Typically they overcome the problems
caused by products sticking to the
sensor and the need for
continual re-adjustment. The semiround sensor
tip is a striking feature of this series. The
electronics are based on RECHNER’s High
Performance Technology and guarantees high
quality and reliability. The capacitive sensors
are available with various process connections,
such as Triclamp, G1“ and M22. Now this series
has been extended with the new Easy Teach range.
This new range has housing lengths that can
reach deeper into the containers. These
capacitive sensors have a G1½“ process
connection. Thanks to the EasyTeach function the
adjustment is made with just one push button.
The clear text display assist with the
adjustment. These capacitive level sensors are ... |
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ATEX zone 20 - Capacitive Sensor - Capacitive PerLevel
Level Probe |
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| Rechner Sensors capacitive
filling level probes are now available for ATEX
zone 20, where there is a danger of dust
explosion when working with products such as
flour. The medium contacting part of the probe
has a PTFE body and the connection head is made
of food grade stainless steel. Typical
applications for these probes are for level
control in the food or pharmaceutical industry.
The probe length (from 100 mm up to 2 m) and the
position of the switching points are flexible
and thus optimised for the client's
application. ... |
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Silicon Designs to Exhibit at Automotive Testing Expo North America 2010 |
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Silicon
Designs, Inc., a global industry supplier of highly rugged
industrial-grade MEMS capacitive accelerometer chips and modules with
integral amplification, today announced its plans to exhibit at the
Automotive Testing Expo North America, October 26-28, 2010, at the Rock
Financial Showplace in Novi, Michigan, USA. On display at booth 10016
will be the company’s range of high-reliability capacitive accelerometers for
zero-to-medium frequency automotive OEM and test and measurement
requirements, including crash event detection, racecar instrumentation
and general purpose laboratory testing. Silicon Designs capacitive accelerometers
are available in measurement ranges from 2 to 20K g and can operate in
temperatures up to +175°C. On-board voltage regulation and an internal
voltage reference minimize temperature and voltage changes while
eliminating additional external power regulation. Carefully regulated
manufacturing processes ensure that each capacitive sensor ... |
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Capacitive fill level sensor for soiled media |
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Baumer’s
new CFAK 12 capacitive fill level sensor detects conductive liquids
while suppressing dirt particles and detergent residues. When detecting
fill levels in soiled media, conventional capacitive sensors are
susceptible to suspended solids that influence their switching behavior
in a negative manner. The new CFAK 12 is the smart remedy for these
applications. Incorporated into a grounded metal basin it monitors the
fill levels of water and water-based fluids. Thanks to its special
housing design and the plane plastic surface, dirt particles hardly
adhere to the sensor. Therefore, the cleaning effort is drastically
reduced compared to conventional solutions. Even if dirt should adhere
to the sensor the integrated compensating electrode makes sure that it
is suppressed and the fill level is still detected precisely.
Additionally, the capacitive sensor is extremely resistant to detergents
and suppresses their residues reliably. Amongst others, the capacitive
fill level sensor is applied in railway lavatories ... |
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Find
all manufacturers and suppliers of
capacitive sensors |
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Combination sensor system for
single-sided thickness measurement |
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Sensor
specialist Micro-Epsilon is relaunching its proven combination
sensor, the KS5. The new KSH5 has been developed even further and now
combines a capacitive sensor and an eddy current sensor with additional
integrated temperature measurement, in a single, compact sensor module.
The combination sensor is used for single-sided thickness measurement of
plastics. Both sensors measure without making contact with the target
and measure continuously in one axis on the same measuring spot. This
means that the combination sensor offers significant benefits when
compared with conventional designs in which multiple sensors are
positioned adjacent to one another. The sensor has a measuring range of
5mm and for the first time has been produced using a unique ECT
production technology recently developed by Micro-Epsilon. Even higher
resolution , very high temperature stability and longer service life
combined with a very compact sensor housing are just some of the
benefits that customers will see from this new technology. A special,
optimised combination connector is provided, which means that output
signals from temperature measurements, the capacitive sensor and the
eddy current sensor can be transmitted in a single connection ... |
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Understanding Capacitive Position Sensors |
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MicroSense, LLC: Introduction to Capacitive Displacement Sensors:
Capacitance sensing is a high precision, high bandwidth, non contact
displacement measurement method which has been in common use for over 50
years. This white paper describes various characteristics of capacitive
sensing, principles of operation, performance characteristics and the
fixturing of capacitive sensors. Capacitive sensors, when used for high
resolution displacement and position measurement, are also commonly
known as cap gages (or gauges), since some of the early commercial
applications for capacitive sensors involved dimensional gaging of
precision components. Characteristics of Capacitive Sensors: Capacitive
sensors are used to make non contact displacement measurements with high
precision, very rapidly over modest ranges. Non Contact: Capacitive
sensing is a non contact measurement method. Because the system never
makes contact with the part there are no witness marks, parts distortion
or probe wear. In addition, because the system is non contact, high
volume measurements are facilitated because there is no sensor cycle
time. High Resolution: Only a laser interferometer offers similar
resolution to a capacitive sensor. Capacitive sensors are used in ... |
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Precision Capacitive Position Sensor –
Model 6810 from MicroSense |
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MicroSense
introduces the model 6810 high resolution capacitive position sensor.
The 6810, in combination with 6000 series measurement probes, is a
non-contact displacement measurement instrument intended to provide
exceptionally high resolution, low noise measurements. The 6810 offers
state-of-the-art performance for high dynamic measurements such as motor
and spindle run out – nanometer level resolution is possible at
measurement bandwidths up to 100kHz! No other capacitance sensor
approaches this level of performance. * Designed for measuring “high
dynamic” targets that change position, rotate or vibrate at very high
speeds, including poorly grounded targets. * User selectable measurement
bandwidths up to 100 kHz for ultra-fast output response. * Non-contact
design for virtually unlimited service life. * Current MicroSense model
5810 customers can immediately improve measurement performance. The 6810
is a “drop in” replacement for customers who wish to upgrade from ... |
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Condition Monitoring with DSC Sensors |
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Balluff:
Proactive maintenance offers enormous potential for cost savings.
Equipment and machines having this feature provide significant
competitive advantages. Reliable function diagnostics is especially
important in high-dynamic machines, used for example in the printing and
paper industry and in cigarette manufacturing. With their Dynamic Sensor
Control (DSC), sensor specialist and networking provider Balluff offers
a completely new and cost-effective way to detect quality deviations in
the manufacturing process in real time indirectly through the sensors.
Here Balluff boasts not only a complete portfolio of inductive,
photoelectric and capacitive sensors, but also the matching full range
of connectivity and networking products. With Dynamic Sensor Control the
value of a machine design can be significantly increased, since the user
profits from greater up-time, simpler startup and more efficient
maintenance. This is made possible through DSC-compatible sensors, a
special Balluff version of already proven standard binary sensors which
can output not only the switching and an error signal, but also warning
and trend messages. The increasing contamination of a photoelectric
sensor, wandering of a target in the direction of the inductive sensor ... |
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Capacitive Sensors, Capacitive Position
Sensors and Their Applications |
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Physik
Instrumente (PI): Many application areas today require the highest
of measurement accuracies, with resolutions in the nanometer or
subnanometer realm. Examples range from semiconductors and biotechnology
through quality assurance and automotive to metrology and microscopy.
Even in “normal” machining, more and more automated tasks require
high-accuracy positioning, which means that suitably high-precision
measuring equipment is essential. This places high demands on the
sensors used. In addition, the sensors must be as easy to integrate in
the application as possible, and usually must also exhibit excellent
dynamic performance. The accuracy and repeatability of the sensors used
is a major determinant of the performance of any positioning system.
Anyone requiring the maximum possible accuracy—in the nanometer or even
picometer realm—will be using capacitive sensors. One specialist in the
area of nanopositioning systems manufacture is PI (Physik Instrumente),
a company which has long been a moving force in the development of
high-precision capacitive sensors, capacitive position sensors, mostly
for use in its own products. Today, capacitive sensors, capacitive
position sensors of various different types, some with resolutions down
into the subnanometer realm, have their own place in the product
palette. Capacitive sensor metrology has more to offer than just high
accuracy: The sensors provide non-contact measurements of the actual
position of the moved object directly—accuracy, stability and bandwidth
are substantially better than those obtained with conventional LVDT or
SGS sensors. ... |
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Find
all manufacturers and suppliers of
capacitive sensors |
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Contact-Free Capacitive Level Switch Allows For Complete Media
Compatibility |
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Sensortechnics’
new CLW series detects point levels of liquids and granular or
pulverised materials without contacting the media. The user can easily
adjust a high and low switch point with a hysteresis of less than 25 mm.
The CLW device uses a new non-invasive capacitive sensor technology and
allows for complete media compatibility and sterility. Due to its
miniature size these level switches can be perfectly integrated into OEM
devices. The CLW sensor can be mounted to the outside of a container or
vessel and is able to measure through almost any non-metallic wall
material. The level switch is highly flexible and can be easily
calibrated to measure to the desired levels, media and application
set-up. The CLW series achieves a very high accuracy and reliability due
to an additional reference electrode which compensates for all changes
in ambient environmental conditions such as temperature and humidity.
Additionally, Sensortechnics can also provide continuously measuring
level sensors based on the same contact-free capacitive technology. ... |
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Capacitive sensors with new technology |
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The
latest range of capacitive sensors from Micro-Epsilon is based on
a completely new technology. A special ceramic substrate provides the
capaNCDT CSH (Hybrid) sensors with extreme temperature stability. New
sensor geometries are also possible which enable the production of a
sensor with a height of 4mm. These flat sensors are called capaNCDT CSH-FL.
Using two drilled holes on the sensor, the flat sensors can be mounted
quickly and easily; as before, the cylindrical sensors can be mounted by
clamping The sensors are also available for use in ultra-high vacuums (UHV)
and clean rooms where, for example, freedom from contamination of the
materials is also important. Due to the integrated cable on the sensor
side, there are two significant benefits: installation space is
significantly reduced and the risks arising from an additional plug
connector, e.g. accidental detachment, are eliminated. The new
technology and the modular design of the sensor enable Micro-Epsilon to
respond very quickly to customer requirements. The CSH sensors are
currently available with measuring ranges between 0.2mm and 1.2mm. Other
measuring ranges are being developed. The hybrid sensors ... |
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Capacitive RH Sensors |
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Innovative Sensor Technology: IST thin film capacitive relative
humidity sensors are capable of measuring 0 to 100% relative humidity
and operating at temperature ranges of -80°C to +190°C. The humidity
sensor product line features sensors with excellent linearity, low
hysteresis, fast response times, and high chemical resistance. IST
provides exclusive humidity sensors with directly integrated ... |
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Capacitance
Measurement Systems |
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MTI Instruments Inc.:
Highly accurate, stable capacitance measurement sensors and probe
systems for a wide variety of displacement, position, vibration and
dimensional gauging applications. Our Accumeasure product line consists
of single and multiple channel capacitance rack systems that can accept
up to 10 capacitance sensors with individual analog measurement outputs.
Custom OEM capacitance sensors are available for intergration into
machine tools and inspection systems with linearity to 0.01% of the
measurement range. ... |
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New Capacitive Sensor Technology Allows
for Continuous and Contact-Free Level Measurement |
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Sensortechnics’
CLC series uses a new contact-free capacitive sensor technology to
continuously measure the fill level of liquids as well as granular or
pulverized materials. The miniature sensor can be easily mounted to the
outside of a container or vessel and is able to measure through almost
any non-metallic wall material. The level sensing range of the standard
device is up to 10 cm which can be enlarged in special multi-sensor
configurations. The non-invasive design, with no contact between the
sensor and the fluid, eliminates all media compatibility and sterility
issues. The device is highly flexible and the user can easily calibrate
the sensor to measure to the desired levels, media and application
set-up. The CLC series achieves a very high accuracy and reliability due
to an additional reference electrode which compensates for all changes
in ambient environmental conditions such as temperature and humidity. As
an optional safety feature the sensor can be supplied with an extra
sensing pad to detect if a container is actually present or not. The CLC
sensor offers an analog voltage output as well as a digital interface.
Sensortechnics can also provide modifications of its capacitive level
sensor ... |
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capacitive sensors |
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ACCUMEASURE 5000 - Capacitance
Measurement Systems |
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High
frequency capacitive measurement sensor for displacement, vibration and
runout measurements with nanometer accuracy. MTI Instruments Inc.:
High-Precision, Non-contact Displacement and Vibration Measuring System
with Nanometer Accuracy. The advanced amplifier circuitry provides a
frequency response from dc to 20 kHz with a corresponding noise level of
0.01 mV rms/Hz√0.5 The Accumeasure 5000 can be used with any of MTI's
standard or custom designed miniature sensor probes for unmatched
linearity, stability and resolution. The Accumeasure System 5000 is
available in either single or dual channel designs. The dual channel
model includes a summing amplifier for applications that require sum or
difference measurements. Applications: * Spindle Runout, * Displacement,
* Flatness, * Engine Dynamics, * Positioning, * Profiling, * Vibration,
* Structural Dynamics, * Dimensional Measurements ... |
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Capacitive Sensors - Aggressive media
safely detected |
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Baumer
Electric: In quite a number of fill level applications there are
liquids to be detected which require sensor housings and media
containers to be made of materials of strongly improved properties due
to their chemical reactivity. The new Baumer capacitive sensors provide
interesting new approaches to many of these challenging cases. Since the
sensors' electrical field of detection is capable of penetrating through
insulating materials such as plastics, glass, cardboard etc., non
invasive detection of both liquids and solid matter is possible from the
outside. Capacitive sensors can therefore monitor fill levels in closed
containers whilst being attached to the outside container wall. Compared
to sensing methods requiring direct contact with matter, there are a
number of advantages. On one hand, this approach provides an excellent
protection for the sensor itself, which assures a long live expectancy
as well as a high degree of process safety. On the other hand, the
medium to be detected or monitored cannot be contaminated by the
sensor’s housing. The detection behaviour of capacitive sensors is
influenced by the dielectric constant of the surrounding materials.
Certain limitations apply when detecting liquids and objects exhibiting
a low dielectric constant using the existing, flush-mounted capacitive
sensors ... |
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Inductive High Temperature Sensors - Hot
Heads ... |
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Baumer
Electric: Baumer’s IFRH series of inductive high temperature sensors
have been designed for operating temperatures ranging from -25 °C to
+180 °C. The two part proximity switches intended for flush front face
installation are available in M8, M12 and M18 designs with chromium
nickel steel housings. With an overall length of a mere 30 mm, the M8
sensor is ideal for installation under conditions of limited space.
Depending on the housing size, the nominal switching distance ranges
from a minimum of 1 mm up to a maximum of 5 mm. An FEP jacketed cable
allows the processing electronics to be separated from the actual sensor
head and to thus be easily and protectively installed outside the hot
range. The operating voltage range lies between 10...30 VDC, while the
protection class is IP 67. In addition, Baumer also offers capacitive
high temperature sensors for detecting nonmetallic components in hot
environments. ... |
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New Capacitec Non-Contact Capacitive Gap
and Parallelism Sensor Systems Improve Solar Panel Production
Efficiencies |
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Capacitec,
a global leader in the design and manufacture of non-contact capacitive
displacement, gap and parallelism sensing technologies for scientific
and industrial customers, has announced the debut of a series of
non-contact capacitive gap and parallelism sensor systems for the solar
panel market. The systems are designed to measure the precise distance
between liquid, anti-reflective and CVD coating head-to-media during
solar panel production, helping manufacturers maintain thin-film coating
uniformity, while improving yields and efficiencies. The unique
expertise of Capacitec within the solar panel manufacturing market is
the culmination of more than 15 years of successful implementation of
measurement technology within the semiconductor manufacturing equipment,
as well as in design of slot die coater gap measurement systems sold to
both OEM’s and end users, working with customers such as 3M, DuPont and
Avery Dennison. Within the liquid coating market, Capacitec has
successfully collaborated with leading global manufacturers of labels,
tapes and films, as well as slot die suppliers, to develop new systems
that more precisely measure coater gaps. These systems have made
dramatic improvements over traditional gap measurement methods ... |
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New capacitive measurement system with
sub-nanometre resolution |
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Only
a short time after introducing its new single-channel measurement
systems, Micro-Epsilon is now offering a new capacitive multi-channel
measurement system, which guarantees extremely high resolution and
accuracies. According to the manufacturer, the new capaNCDT500 provides
a resolution in the range of hundredths of a nanometre and supersedes
the existing capaNCDT600 series. An Ethernet port with 24-bit resolution
is available, so that data obtained can be output as error-free as
possible. The new system is modular in its design and can accept up to
eight measuring channels, depending on requirements. For this, the
controllers, in all the major European card formats, are inserted in the
housing. A version with an integrated preamplifier, as well as one with
an external preamplifier, are available, which enables cable lengths of
up to 20m between sensor and controller. The sensors operate virtually
independent of temperature and so can be used at ... |
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capacitive sensors |
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ACCUMEASURE 500 - Capacitance Measurement
Systems |
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Compact
6-channel capacitance system designed for brake rotor and other compact,
multi-channel applications. MTI Instruments Inc.: The Accumeasure
500 compact capacitance rack system accepts up to 6 standard or MTII’s
proprietary push/pull capacitance amplifiers. The modular design allows
customers to populate the rack with thier required number of measurement
channels and summing amplifiers for thickness or differential
measurements. Compact by design, the Accumeasure 500 is ideal for in
vehicle testing of brake rotors, axel runout or thermal expansion
testing. Applications: * Dimensional Gaging, * Shaft Runout, *
Structural Analysis, * Film Thickness, * Motor Vibration, *
Micro-Positioning, * Web Thickness, * Alignment, * Leveling ... |
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Accumeasure 1500 - Capacitance
Measurement Systems |
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Affordable,
multi-channel capacitive measurement sensors for a wide variety of
general gaging applications. MTI Instruments Inc.: Affordable
Non-contact Gaging Sensors. The Accumeasure 1500 is a multi-channel
capacitive displacement sensor for production, quality control or
laboratory applications. With a frequency response up to 5 kHz, and low
noise levels, it is ideal for a multitude of general gaging
applications. Using a patented approach, the probe to target gap is
converted to a linear 0-10 Vdc output. Displacement, position or
vibration is presented on the digital display, or can be output to an
oscilloscope or data acquisition system. Optional push/pull probes are
available for ungrounded targets. Applications: * Dimensional Gaging, *
Shaft Runout, * Structural Analysis, * Film Thickness, * Motor
Vibration, * Micro-Positioning, * Web Thickness, * Alignment, * Leveling ... |
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Level measurement in cavities with only
4mm diameter |
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SNT
Sensortechnik AG: Many industrial applications can be solved with
the miniature ultrasonic sensors series UPS, where optical, inductive or
capacitive sensors might have problems with detection. Furthermore with
the UPS sensors with analogue output a precise distance or level
measurement can be realized, with a precision of approx. 0.3mm, with
0…10V or 4…20mA output. The special version “FOCUS Beam” (center on
picture) has a focusing device for the ultrasound. It has been
particularly successful in various applications. It proved its advantage
in the detection through very narrow openings. Since the FOCUS Beam does
not have any disadvantageous blind range, one can place it very close
(few millimeters only) to the opening of a cavity. There the beam is
only 3mm wide in diameter. This allows e.g. to measure the level in only
4mm wide cavities with an accuracy of only few 1/10mm. The other special
version "CP" (Chemical Protection, right on picture) has a PTFE
diaphragm with a protective sleeve. This can be used as a level sensor ... |
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ACCUMEASURE 9000 - Capacitance
Measurement Systems |
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Ultra-high
precision capacitive measurement sensor offering nanometer accuracy and
stability. MTI Instruments Inc.: An Ultra-high Precision
Capacitance Gage Offering Nanometer Accuracy. Outstanding accuracy,
stability and repeatability are the hallmarks of the Accumeasure System
9000, a high-resolution, capacitance-based instrument that provides the
perfect solution to many previously unattainable measurement
applications. Fast response time and extremely low noise levels make it
ideal for critical measurements of targets such as rotating
spindles/shafts, disks, tires, X-Y stages and semiconductor wafers. The
AS-9000 delivers nanometer level resolution for ultra-high-precision
measurements - each and every time. It is portable, lightweight,
compact, and setup is fast and easy. Applications: * Positioning, *
Vibration, * Profiling, * Displacement, * Go/no-go Decisions, *
Focusing, * Thickness, * Dimensional Gaging, * Alignment ... |
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Accumeasure MicroCap - Capacitance
Measurement Systems |
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Custom
High Accuracy OEM solutions for micro-positioning and feedback control
applications. MTI Instruments Inc.: The Accumeasure MicroCap is a
compact, custom designed, OEM capacitance system for high-precision
non-contact measurement. It provides exceptional value and offers
sub-nanometer resolution, extremely high stability and fast response
time, making it ideal for micro-positioning, thermal correction,
focusing and closed loop control applications. The MicroCap utilizes
MTII’s latest capacitance amplifier design, backed by nearly 50 years of
product line history and thousands of installations worldwide.
Applications: * Servo-loop positioning control, * Precision dimensional
gauging, * Lens adjustment/focusing, * Flatness and profile
measurements, * Vibration monitoring, * Shaft run-out and analysis, *
Thermal expansion monitoring ... |
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