|
|
|
|
| |
|
| |
Strain sensors, strain gages,
strain links, strain measurement
|
|
|
|
| |
New ! Follow us now also
on Facebook: |
 |
|
|
|
|
|
|
|
|
|
|
A
selection of recently
published
technical
articles, white papers, products
&
application examples:
|
|
|
| New strain transducer with integrated
electronics for cost-effective force measurement |
| |
 The
measurement technology specialist HBM
is now introducing strain transducers with integrated
electronics for simple and cost-effective measurement of
forces to the market. The SLB700A/06VA-1/2 transducer
models work with strain gages and have an integrated
amplifier, outputting measured values via an analog
output with 0 - 10 V or 4 - 20 mA. The strain
transducers work in the force shunt and can be easily
attached with 4 screws to the component whose loading is
to be determined. A force that acts on a component leads
to a strain that is transfered to and measured by the
strain transducer. The amplifier integrated in the
transducer ensures that the force measurement can be
easily set up and implemented. The amplifier is set up
for this purpose with a so-called Teach-In method via a
control contact. ... |
|
|
|
|
|
|
+ Info |
|
|
|
|
Analogue Strain Gauges with Free Calibration from
LCM Systems |
| |
 LCM
Systems: The SGA range of high specification, analogue
strain gauge amplifiers has been designed for universal use and
offers a degree of flexibility that makes these amplifiers
perfect for use in a multitude of configurations, ideal for OEM
customers. Added to this, LCM Systems offers free calibration
when any of the SGA range is purchased with LCM load cells. One
of the main features of the SGA range is the very stable bridge
excitation combined with the amplifiers’ flexibility. The two
versions, the 110/230V ac-powered SGA/A and the 18-24V
dc-powered SGA/D both offer 10vdc or 5vdc on-board excitation
and are capable of powering up to 4 x 350ohm strain gauge
bridges. User selectability was also key in the design of these
amplifiers. Any sensor with an input sensitivity range of 0.06
to 29mV/V can be amplified to give 10V, 5V, 0-10V, 0-5V, 0-20mA
or 4-20mA outputs and using a combination of switches and ... |
|
|
|
|
|
|
+ Info |
|
|
|
| digiCLIP
from HBM – the universal industrial amplifier for strain
gage sensors with an integrated DeviceNet interface |
| |
 HBM:
Add this to the already possible CAN and
Profibus interfaces and you have digital
amplifiers that can be integrated into any
automation environment with leading fieldbus
systems. Typically, digiCLIP amplifiers from HBM
are used for process monitoring in industrial
plants, where they acquire process variables
such as pressure, force or torque and make them
available to a downstream control. There is now
a digiCLIP module version available with a
DeviceNet interface. The interface has been
developed strictly in accordance with the
standard specified by ODVA, ensuring that its
integration into the relevant automation systems
is trouble-free. The amplifiers support TEDS,
the electronic data sheet, which allows the
connected transducer to be automatically
detected and the digiCLIP parameterized. This
saves valuable configuration and commissioning
time. ... |
|
|
|
|
|
|
+ Info |
|
|
|
|
|
|
|
|
|
|
A
selection of recently
published
technical
articles & products:
|
|
|
|
New wireless strain gages from SENSeOR |
| |
 SENSeOR
will launch its new wireless SAW strain gages at SENSOR+TEST
(Nurnberg, Germany - 7th to 9th June). Wireless and entirely
passive (no battery, no energy harvesting), these 4 strain gages
(SSE E015, SSE E016, SSE E017 and SSE E022) and their
corresponding reference and temperature gages allow to perform
temperature compensated differential measurements in various
axis with high stability. As they require no maintenance or
battery replacement, these wireless strain gages can be placed
in inaccessible or confined places or even embedded into
material (rubber, concrete, steel, composites). They operate in
harsh environments (corrosive, radiated, magnetic fields) and
can perform strain/torque measurements on moving or rotating
parts. Placed on the rotor of a generator, they will provide
torque and temperature information for condition monitoring,
allowing a safe and optimized functioning of the equipment.
Embedded into concrete in tunnels or dams, they will perform
Structural Health Monitoring without time limitation. Placed
into a wireless sensor network, they will monitor continuously
stress and load on shelves and forklifts in warehouses. ... |
|
|
|
|
|
|
+ Info |
|
|
|
| New HBM strain
gage catalog |
| |
 HBM's
new catalog "Strain Gages and Accessories" is now
available in English and German versions. Strain gages
are mainly used in the manufacture of transducers and,
also, for experimental stress analysis. In particular,
when applications in experimental stress analysis with
frequently changing requirements on strain gages are
concerned, the new catalog enables users to swiftly and
reliably find the right strain gage. A flow chart that
requires users to answer some questions allows to
quickly determine the strain gage type that best fits
the respective application. All strain gages available
from HBM and their specifications are presented on about
100 pages. In addition, users will find many useful
hints on how to correctly use strain gages. Optical
strain gages based on so-called fiber Bragg gratings are
among the highlights of the new catalog. These are
particularly suited to applications with very high
numbers of load cycles and high strain. ... |
|
|
|
|
|
|
+ Info |
|
|
|
| Baumer
DSRC Strain Rings Are Overload-safe and Save Time |
| |
 With
the strain ring series DSRC, Baumer
offers flexible solutions for measuring cyclical
processes such as tension, compression, and
torque. The strain rings offer a good
repeatability of 0.1 per cent F.S. Based on the
patented STRAIN-MATE principle, the measuring
elements of the sensor invariably function in
the force shunt circuit, so the sensors cannot
be overloaded. Due to their rugged mechanics,
the strain rings of the DSRC series are
practically indestructible and thus have a very
long service life. As the rings can be screwed
on, there is no need for surface preparation
before installation. Compared to bonded sensors,
this quick and easy installation saves
significant amounts of time and money. All
strain rings of the DSRC series have a measuring
range of ± 1000 microstrains, with 1 microstrain
equal to a strain of 0.001 millimetres per metre
of shaft. The output signal per 1000
microstrains is 1 mV/V with completed full
bridge. In addition to their good repeatability
of 0.1 per cent F.S., DSRC strain rings feature
... |
|
|
|
|
|
|
+ Info |
|
|
|
| Temperature compensation for
optical strain gages |
| |
 For
its type K-OL and K-OR optical strain gages, HBM
now provides the K-OTC sensor, which can be used to
compensate the temperature response of optical SGs.
Experimental stress analysis is a typical application
for optical strain gages (SG) based on so-called fiber
Bragg gratings, such as the K-OL and K-OR types from
HBM. As the strains are measured by light, optical
strain gages dispense with electrical signals, allowing
them to be used under difficult conditions such as under
high voltage, when there is powerful magnetic
interference or in potentially explosive atmospheres.
The measurement signal in optical strain gages is
temperature-dependent firstly as a result of the
temperature sensitivity of the fiber Bragg grating and
secondly thanks to the thermal dilatation ... |
|
|
|
|
|
|
+ Info |
|
|
|
|
|
|
|
|
| |
More technical articles & products to this topic:
|
Find
all manufacturers and suppliers of
strain sensors, strain gages,
strain links, strain measurement |
|
| |
|
|
Fiber Bragg grating-based strain gage rosette |
| |
|
HBM
is now launching a new optical strain gage (SG) in
rosette form the K-OR type. The rosette comprises three
measuring grids at angles of 0°, 60° and 120°, to sense
the strain as it occurs. As with electrical strain
gages, this then allows the absolute value and direction
of the mechanical stresses to be defined. Only 43 x 47
mm in size, the optical K-OR rosette is one of the
smallest optical SGs in rosette form in the world.
Optical strain gages (SGs) based on so-called fiber
Bragg gratings, dispense with electrical signals and use
light to measure the strain. So they are also suitable
for applications where it is not possible to use
conventional, electrical SGs. This includes, for
example, in potentially explosive atmospheres, and areas
where there is high voltage or powerful electromagnetic
interference. Optical strain gages are also ideal for
materials testing of fiber ... |
|
|
|
|
|
Simple, precise and economical measurement of compressive and tensile
forces |
| |
|
High-precision
measurement of compressive and tensile forces is possible with the new
S9M force transducer from HBM. The transducer works with strain
gages (SG) and is extremely accurate, thanks to its so-called S-type
geometry. This gives the S9M an accuracy class of 0.02, which is a great
improvement compared to its predecessor the S9, which had an accuracy
class of 0.05. Compensation for parasitic influences, such as lateral
forces or bending moments, is excellent, and measurement reliability
improves accordingly. Integrating the transducer into an application is
correspondingly simple. The transducer is also impervious to the effects
of temperature, even for temperature gradients. The S9M is available
with different nominal (rated) force ranges, from 500 N to 50 kN. The
strain gages are hermetically integrated into the measuring body, and
are safely protected. Because the material used is stainless steel, and
the degree of protection is high (IP68), the transducer can also be used
under adverse ambient conditions.
... |
|
|
|
|
Find
all manufacturers and suppliers of
strain sensors, strain gages,
strain links, strain measurement |
|
|
Smallest Strain Sensor with Highest Resolution |
| |
|
With
the strain sensor DSRT, Baumer offers a sensor for indirect force
measurement which can be used in the packaging industry, engineering,
wind energy plants and many other industrial applications. The DSRT is
the smallest strain sensor with the highest resolution (0.01 µε)
available on the market. It is offered with measuring ranges from 0…100
µε up to 0…750 µε (micro strain: µm/m). The strain sensor is suitable
for all static and dynamic applications and can be used wherever strains
are expected, e. g. for process control in presses and punching
machines, for monitoring blade deflection in wind energy plants, or for
sheet metal forming applications in the packaging technology. The
indirect force measurement enables the control and traceable
documentation of forces in the process. It also guarantees the
repeatability of the individual processes, thus ensuring consistent
quality. ... |
|
|
|
|
|
Sub-Miniature, High Performance “In-Cell”
Amplifier from LCM Systems |
| |
|
By
incorporating the second generation “in-cell” amplifier (ICA) from
LCM Systems, engineers can convert a strain gauge input to a voltage
or a current output. This high performance, sub-miniature amplifier can
be used for internal amplification of strain gauge based load cells,
pressure transducers or torque transducers. Available in six different
versions with a wide range of current and voltage outputs, this latest
amplifier with its robust construction has also been designed for quick
and easy installation. With a maximum height of only 7.6mm, a
standardised excitation of 5V DC and plated through holes for wire
connections, its versatility makes it suitable for a wide range of OEM
applications. Reverse polarity, short circuit protection and a fast
calibration procedure are just some of the other features on this CE
approved range of amplifiers. According to Steve Sargeant, Managing
Director, LCM Systems is one of only a few companies who have an
amplifier suitable for load cell integration. “The technology has been
available for many years and is widely used in pressure transducers.” he
explains. “However, it hasn’t really been utilised with load cells but
has considerable benefits. The signal obtained from a pre-conditioned
and pre-calibrated load cell, can reduce installation time ... |
|
|
|
|
|
RoaDyn® S220 2-Component Measuring Hub Meets Rolling Resistance
Standards ISO 28580, SAE J1269 and ETRTO 117 |
| |
|
Kistler
has expanded its range of multicomponent measuring hubs for tire test
stands. This complements the RoaDyn P5xy piezoelectric 5-component hubs
with the RoaDyn S220 2-component design including strain gage force
measuring technology. The S220 measuring hub Type 9289A103 measures
changes in rolling resistance in the tangential direction Fx as close as
possible to the tire footprint. The use of strain gage technology allows
static measurement of the contact force Fz and control of the test
stand. The RoaDyn S220 measuring hub meets the requirements of the
established rolling resistance standards ISO 28580, SAE J1269 and ETRTO
117 for passenger car tire load indices of up to 121. By contrast with
the torque and power measurement methods also used for rolling
resistance tests, the S220 relies on the force measurement method. By
measuring very close to the tire footprint the force method increases
accuracy by reducing parasitic losses. Subsequent data conversion
optimizes measurement precision on rolling resistance test stands by
eliminating the effect of crosstalk. Data output is analog in the case
of the RoaDyn S220 measuring hub and digital with the RoaDyn System 2000 ... |
|
|
|
|
|
Patented SG hole drilling rosette for
accurately determining residual stresses |
| |
|
The
new RY61M SG hole drilling rosette that HBM is now marketing for
this hole drilling method has a patented structure, which appreciably
increases the accuracy of residual stress measurement. The so-called
hole drilling method is the one most frequently used to determine
residual stresses in components. With the hole drilling method, strain
gages (SG) determine the deformation, also called the relaxation strain,
all around a drill hole, while a drill hole is being inscribed. Hole
drilling rosettes with three SG measuring grids are normally used for
the hole drilling method. The eccentricity of the hole is a possible
source of error with this method. The new RY61M SG hole drilling rosette
uses six measuring grids instead of the customary three, to further
improve the accuracy of this process. The hole drilling rosette
measuring grids are arranged around the drill hole, with each of the
opposite SG pairs being interconnected so that their signals ... |
|
|
|
|
|
Q.series A106, Measurement with strain
gage bridges – without compromises |
| |
|
Gantner
Instruments: The subject of carrier frequency or direct current feed
for strain gage sensors has occupied users for decades. There are subtle
differences even in the selection of the carrier frequency. Long
connection leads and high carrier frequencies can quickly lead to
capacitive overmodulation. Here a low carrier frequency helps, however
also reduces the dynamic quality of the measurement. Then perhaps it
would be better to use DC voltage – except for the high noise and
reduced stability. These problems do not arise with the A106 module,
available in the new Q.brixx und Q.raxx (19“, 3 HU) series as well as
the Q.bloxx series. Because with this 2-channel module it is possible to
configure the sensor feed: Strain gage quarter, half and full bridges:
DC, carrier frequency 600 Hz or carrier frequency 4.8 kHz, each 2.5 V
and 5 V. For inductive bridges, LVDT, RVDT: Carrier frequency 4.8 kHz,
2.5 V or 5 V. The measuring rate is 10 kHz, the measuring frequency 1
kHz; at carrier frequency 600 Hz the measuring frequency is 100 Hz. ... |
|
|
|
|
Find
all manufacturers and suppliers of
strain sensors, strain gages,
strain links, strain measurement |
|
|
High fidelity weighing with the IPE50 indicator |
| |
|
SCAIME, leader on the weighing components
market, is launching the new indicator/transmitter IPE50
designed for commercial weighing and industrial process control
applications. The IPE50 makes it possible to connect up to 8
strain gauge sensors 350 Ohm. In order to ensure an optimal
reliability and safety of the monitored process, it offers a
high level of metrological performances (24 bits conversion,
displaying up to 200.000 counts, digital filters, etc). In
addition, the IPE50 is “legal for trade” approved up to 10000d
according to EN45501. The IPE50 integrated functions enable to
cover a wide range of application such as tank weighing, level
monitoring or filling control. Thanks to its LED display (6
digits 18mm), its 5 keys keyboard, and the optional PC software
for calibration ... |
|
|
|
|
|
eNod: digital measurement power 3 ! |
| |
|
With its new digital transmitter eNod, SCAIME
offers a low-cost and powerful solution to convert any strain
gauge sensor into an intelligent digital system. eNod integrates
three advanced operating modes allowing control of static or
dynamic processes. 1. Digital transmitter : eNod heart is built
on the latest generation of 24 bits analog-todigital converter
allowing high speed as well as highly accurate measurement
acquisition. Thus, eNod is able to meet 1200 measurement/second
transmission rate with an available resolution of 1 million
divisions. 2. Dynamic weighing controller ... |
|
|
|
|
|
Epsimetal : Strain sensor |
| |
|
SCAIME announced the availability of the
miniature, digitally compensated, high level (0-5V) output
EPSIMETAL strain sensor. Built-in strain gage conditioning,
adjustable using RS 232 allows high level signal and temperature
compensation on any material. The low stiffness of the EPSIMETAL
provides a large measuring range of 1000 µm/m with a resolution
of 1µm/m in tension or compression. The patented pre-loading
principle compensates the strain sensor, resulting in excellent
repeatability and no zero shift. Installation is possible either
by four little screws or by bonding directly to a surface, using
removable mounting plates. These plates can be custom made to
accommodate any specific surface, e.g. a cylinder. Thus, the
EPSIMETAL is re-usable. Typical applications: * Measurement of
strains on ... |
|
|
|
|
|
DIN-Rail Amplifier for use with DC Strain Gage Transducers |
| |
|
Stellar
Technology: The new Model AP5101 is a DIN-rail mounted single
channel Amplifier which provides variable excitation and signal
conditioning for standard DC-excited strain gage transducers, including
those for pressure, force, torque, and load. The AP5101 provides up to
10V output or 4-20 output with transducer signals from 10mV to 10V, and
incorporates a DC-DC converter to insure that the output is electrically
isolated from the supply. The unit accepts both uni-polar and bi-polar
input signals and can produce corresponding unipolar or bi-polar voltage
outputs. The AP5101 is compatible with standard DIN-Rail mounting
systems and is constructed of high-impact thermoplastic. The design
permits convenient access to screw-clamp terminal connections for power,
analog output, shunt, and sensor signals. Zero and span adjustments are
located on the front panel and feature 25-turn trim pots. All other
controls are internal including coarse gain and zero, zero input switch,
jumper links for master/slave setting, and excitation frequency setting.
All internal settings are easily accessible by ... |
|
|
|
|
|
AED digital transducer electronics for
analog SG (Strain Gage) transducers |
| |
|
HBM:
When analog transducers using strain gage technology (SG) are integrated
into a superordinate system, the analog signals usually have to be
digitized. HBM’s new AED transducer electronics are now available for
this purpose. They make it very easy to integrate analog standard load
cells into a digital environment. Transducer electronics are equipped
with different fieldbus interfaces, such as CANOpen, DeviceNet and
Profibus DP V1, as well as serial RS232 and RS485 interfaces. It is
quick and easy to activate the AED via these interfaces with a PC, for
example. Efficient digital filters, sampling rate adjustment,
characteristic curves, linearization and more than 100 structured
commands can be parameterized in this way. The different fieldbus
interfaces ensure that there is never any problem integrating into a
wide variety of superordinate applications. All the inputs and outputs
of the transducer electronics are electrically isolated. Use under harsh
ambient conditions is also assured by degree of protection IP65. The
compact AED can thus also be installed right next to the strain gage
transducer. ... |
|
|
|
|
Find
all manufacturers and suppliers of
strain sensors, strain gages,
strain links, strain measurement |
|
|
Kistler Provides Mechanical Parts with
Custom Strain Gage Instrumentation for Material, Load and Crash Tests |
| |
|
The
Kistler Group's acquisition of MSC Automotive GmbH has
substantially enhanced its expertise in the area of sensors and
applications based on strain gages. The amalgamation of MSC Automotive
with Kistler-IGeL GmbH on the Schönaich site has now given Kistler more
than a dozen members of staff with strain gage technology experience
including calibration of strain gage sensors. With this expertise, many
years of product and application experience, precision manufacturing,
timely execution and in-situ instrumentation as required, Kistler offers
a wealth of know-how revolving around strain gage applications. Core
competencies include: * Strain gage (single- to 6-axis) load cells for
in-dummy applications ... |
|
|
|
|
|
New In-Line Amplifier for DC Strain Gage
Transducers |
| |
|
The
new Series AP5201 In-Line Amplifier from Stellar Technology is a
low cost, easy-to-use, general purpose signal conditioner. This single
channel unit is ideal for DC-excited strain gage pressure transducers,
load cells, and torque transducers. AP5201 features an advanced analog
design which solves the problem of measurement inaccuracy caused by high
electromechanical noise. The AP5201 provides filtered analog output of
±5Vdc, ±10Vdc, or 4-20 mA, which is field-selectable by the user. Zero
and span adjustments are made through coarse rotary switches and
potentiometers. This in-line amplifier will accommodate a wide range of
full-bridge DC strain gage sensors with bridge resistance for 120 to 10K
Ohm. The AP5201 signal conditioner can be placed in-line and away from
high temperature, high humidity, or corrosive environments that the
transducer itself may be exposed to, thus protecting the electronics
from severe conditions and ensuring reliable performance. The AP5201
in-line amp is also useful when mated to miniature and subminiature load
cells or pressure transducers which are too small to ... |
|
|
|
|
|
PCB Load & Torque, Inc. Release Technical
Papers: Torque Sensors and Load Cells, An Overview of their Design and
Application |
| |
|
Kenneth Watkins, Application Engineer for PCB Load & Torque, Inc.,
has recently released the following technical papers: Torque Sensors –
An Overview of their Design and Application reviews the basic technology
of the strain gage torque sensors including structure designs, typical
applications for reaction and rotary sensors and installation
discussions. This paper includes an application questionnaire to help
the reader determine the advantages of each type. Load Cells – An
Overview of their Design and Application reviews the basic technology of
the strain gage load cell including design, model classifications, and
performance specifications. This paper includes typical application
examples and a questionnaire to help determine specific requirements ... |
|
|
|
|
|
Optical strain gages for extreme
requirements in experimental strain analysis |
| |
|
HBM
has now developed its K-OP type optical strain gages (SGs) even further
so that they offer several decisive advantages compared to electrical
SGs. They are for example ideally suited to material tests of new fiber
composites. Tests with up to 10 million load cycles with an alternating
strain of ±5.000 µm/m are now possible. The K-OP type optical SGs are
based on so-called fiber Bragg gratings. As the strain is measured
purely optically, an electric signal is not necessary. This makes
utilization in explosive atmospheres, electro-magnetic interferences or
even high voltage applications possible without difficulties. In
addition, several optical SGs can be attached to a fiber, enabling
implementation of parallel measurements. Glass fiber lengths of several
hundred meters are possible. The user receives a data sheet with the
optical strain gages, which amongst other things includes the important
gage factor of each individual SG, already tested by HBM ... |
|
|
|
|
|
Compact strain transducer offers high
security for industrial process monitoring |
| |
|
HBM has introduced the 6 mm high SLB-700A strain transducer to
measure strains on solid components, such as cranes and bridges, where
high loads need to be measured. The compact size of the strain
transducer means that it can easily be mounted on any component with
standard M6 hexagon socket screws. The SLB-700A has a measuring range of
500 µm/m and provides a high safety reserve with a breaking strain of
300 per cent. The strain is transmitted through the connection with the
component to the strain transducer. The change in length is transmitted
in the strain transducer to an integrated strain gage, which supplies an
output signal through an appropriate circuit that is proportional to the
change in length. The SLB-700A’s housing is made of stainless steel and
meets IP65 to protect the strain transducer against environmental
influences. It can also be used under harsh ambient conditions, such as
in industrial applications. Typical applications for the strain
transducer are ... |
|
|
|
|
Find
all manufacturers and suppliers of
strain sensors, strain gages,
strain links, strain measurement |
|
|
Texense Strain Gauge Amplifier XN2.1 allows programmable functions
without computer |
| |
|
Texense International Company, specialist of robust sensors for
embedded measurement introduces a new product. The Texense XN2 is a PCB
analog strain gauge amplifier, with high resolution and high speed, with
offset and gain adjusted by microcontroller. Because of its small size,
the Texense XN2 may be bonded close to the gauges, which will reduce
noise on the signal. When the amplifier is wired to the strain gauge
bridge, the customer may, with a single VPROG signal (no use of a
computer): * adjust the offset, * adjust the gain by applying an effort
on the part, * start a self training cycle for temperature compensation,
* adjust temperature gain compensation depending on part and gauge
materials, * check the gauge bridge state. The Texense XN2 simplifies
strain gauging because it doesn’t need zeroing, nor temperature
compensation for offset or sensitivity. Just bond 1, 2 or 4 gauges on
the part, wire them to the amplifier and it will do the job ! ... |
|
|
|
|
|
DIN-Rail Amplifier for DC Strain Gage Transducers |
| |
|
Stellar
Technology: The new Series AP5103 DIN-rail Amplifier is a low cost,
general-purpose, single channel signal conditioner which is compatible
with standard DIN-Rail mounting systems. The AP5103 is designed for
input of pressure, force, torque, weight, and other variables measured
by standard DC-excited strain gage transducers. The AP5103 allows the
user to select filtered analog output of ±5Vdc, ±10Vdc, or 4-20 mA and
will accommodate a wide range of DC strain gage sensors with bridge
resistance of 120 to 10K Ohm. The Series AP5103 is especially
user-friendly, with front panel accessible settings for mode, volts,
current, filter, excitation, and zero. A wide zero and span adjustment
and switch-based shunt cal feature make this versatile unit perfect for
a variety of applications. DIN-Rail design permits easy access to screw
terminal connections for power, analog output, shunt, and sensor
signals. The AP5103 provides exceptional signal stability and accuracy
over a wide range of sensor inputs ... |
|
|
|
|
|
Strain gages improve printed circuit
board quality |
| |
|
HBM:
has developed micro-strain gages with a size of 1.2 mm x 2 mm to detect
the mechanical stresses that occur during the production of complex
printed circuit boards (PCBs) leading to marked improvements in
production quality. The micro-strain gages can be attached directly to
the PCB to monitor stress levels; for unpopulated PCBs, these are around
850 µm/m, for populated PCBs, around 450 µm/m. Strain gages are needed
for these applications because continuing technological development has
resulted in PCBs that are extremely complex and very densely populated.
This leads to increased mechanical stress and can result in damage to
the electronic components. There is a higher probability that the
completed circuit will then fail. Using HBM’s latest micro-strain gages,
stress measurements can be obtained throughout production including
depanelization, plug assembly, in-circuit testing and installing PCBs in
an enclosure. Measurements can even be performed in a solder bath, where
vast fluctuations in temperature can lead to strain. HBM can also supply
strain gages of the Y series, for example, in linear form (LY4) or in
rosette form (RY9) that are also suitable for these applications. ... |
|
|
|
|
|
Strain links – Force measurement made
easy |
| |
|
Baumer
Electric: DSRT strain links from Baumer are screwed onto the
surfaces of machines that are under pressure. In these positions they
detect linear strains. Thanks to a calibration of the complete system,
the extension can be converted into a force. Since they only need to be
screwed, strain links are easy to install. Therefore, they provide a
good alternative to strain gauges (S/G) that are glued directly onto the
machine or to load cells that have to be integrated into the machine.
This particular task often proves to be complicated and cost-intensive.
Using a strain link can save between 40 and 90 minutes, compared to the
glued S/G. The strain link can also be screwed onto the machine again
easily after needing service. The sensor is reliable with small as well
as superimposed strains. The special geometry of the measuring element
transforms the extension mechanically, which results in higher
resolutions. Additionally, the optimized design of the measuring element
allows to decouple bendings and torsions from the linear extension.
Hence, they do not influence the measurement results. Due to an
integrated amplifier, the design of the sensor is very compact. With the
taring function of the amplifier the sensor can be reset at any time.
Strain links are used for easy force measurements ... |
|
|
|
|
|
Two for the price of one, Dual channel
strain gauge amplifier for a strain gauge signal |
| |
|
With
its SG-2K-Z Althen GmbH Mess- und Sensortechnik – the specialist
for electrical measurement of mechanical values – presents a special
series of its new dual-channel strain gauge amplifier. The amplifier can
be used to evaluate two differently scaled measurement ranges with just
one strain gauge sensor connected. The input signal is switched to both
channels simultaneously and separately amplified for each measurement
range. This means that analog output signals featuring the highest
degree of accuracy and resolution are available for each of the two
measurement ranges. In particular these strain gauge amplifiers are
often used for applications where there are predominantly two different
operating states, such as high and low-pressure states, and where both
states need to be monitored and evaluated accurately with one sensor.
Due to the small span, the low measurement range features a higher level
of absolute accuracy. Fields of application for this technology can be
found in production engineering, e.g. for force fitting processes,
machine construction, test benches and automotive engineering. ... |
|
|
|
|
Find
all manufacturers and suppliers of
strain sensors, strain gages,
strain links, strain measurement |
|
|
Catalog highlights strain gages for transducer manufacturers |
| |
|
The
latest catalog from HBM highlights the benefits to transducer
manufacturers of using strain gages as the sensing element in many
transducers. Typically manufacturers develop transducers using strain
gages for weighing technology applications - from home scales to crane
scales – and in force and pressure measurement applications. Every
strain gage featured in the catalog is based on the latest carrier
material, PEEKF, which is an enhancement of PEEK that has been used so
successfully to date. PEEKF is less hygroscopic than PEEK preventing
transducer zero drift and, since the material does not tend to distort,
the strain gage lies completely flat on the component to make
installation easier. PEEKF is also more robust than other carrier
materials leading to fewer failures during installation when, for
example, strain gage connections are soldered. The catalog has 48 pages
and presents all of the different strain gage types that are available
as well as accessories such as adhesives, bonding materials, cleaning
and covering agents. Useful background information on the application
and configuration of strain gages is also included in the catalog. ... |
|
|
|
|
|
FUTEK Introduces its Canister/Column Type
High Capacity Load Cell with USB Output Option |
| |
|
FUTEK
Advanced Sensor Technology, Inc. (FUTEK) is now offering its LCA700
High Capacity Load Cell with a USB output option. Since the 4th quarter
of 2008, FUTEK Engineering Labs have been offering USB Output option on
select models. The LCA700 is now part of the FUTEK USB Sensor Solution
series in the high capacity range. Utilizing metal foil strain gage
technology, the LCA700 17-4PH Stainless Steel in 500,000 lbs to 1
million lbs, has a raised Spherical surface to lower the possibility of
off center loading, and comes equipped with a handle for easy carrying.
FUTEK’s Canister (LCA) Series are manufactured in US, and similar to our
entire Load Cell product line, use metal foil strain gauge technology.
For a lower capacity of this style please refer to LCA300 series. High
capacity load cells are used in a wide variety of applications and
industries. Monitoring bridge static, dynamic and earthquake induced
loads, setting up rolling loads at steel mills, monitoring foundation
loads at power plants, and truck scale weighing are a few examples of
high capacity load cell applications. High capacity load cells find use
in many areas such as Bridge/Infrastructure, Power Generation,
Transportation, Aerospace, Construction, Steel, and the Marine
Industries. Canister Load cells are ... |
|
|
|
|
|
Optical strain gages are unbeatable for
sustained load tests |
| |
|
HBM’s
optical strain gages (SG) now have an improved fatigue life; 10 million
load cycles at an alternating strain of ±3.000µm/m can be attained. This
makes the sensors unbeatable compared with available alternatives when
sustained loading is tested, for example, on fiber-reinforced plastics
at high alternating strain. Optical strain gages are particularly
suitable for measurement in potentially explosive areas and on
high-current and high-voltage components. The relative wavelength
variation resulting from a mechanical strain is linear over a strain
range of more than ±10.000 µm/m. Based on fiber Bragg gratings, several
sensors can be arranged inside a single glass fiber to significantly
reduce installation costs. Optical strain gages are still being tested
to VDI/VDE 2635 – the standard for electrical strain gages, because
optical strain gages have not yet been standardized. ... |
|
|
|
|
|
Parameter Setting of Industrial Charge
Amplifiers and Transmitters Made Easier with ManuWare |
| |
|
The
ManuWare user interface shows connected instruments, instrument status
and test measurement curves at a glance. The latest generation of
Kistler transmitters (press force transmitter Type 9337A... and
strain transmitter Type 9238A...) is equipped with a serial computer
interface as standard. They can be fully parameterized quickly and
easily using the PC program ManuWare. The proven industrial charge
amplifier ICAM Type 5073A... is also supported by ManuWare. After
connection to the PC, ManuWare recognizes sensors or charge amplifiers
using an AutoScan function and lists them in the program. The status of
recognized devices is shown at a glance. Instrument groups can be
structured as one single project. Parameter configuration is performed
intuitively through device-specific dialogs. A graphical display of the
test measurements and auxiliary functions for scaling indirect
measurement help the user set up force measurement applications. The
number of simultaneously supported measuring channels is only limited by
the power of the computer being used.The settings of the fully
configured devices can be saved on the PC. The resultant back-up files
make it easy to provide replacement instruments or measuring chains with
identical parameter configurations for similar applications. ... |
|
|
|
|
|
Kistler CAD Download Service Brings
Sensors and Electronics Straight into Design |
| |
|
To allow direct incorporation of Kistler products into CAD
designs, the Kistler CAD Download Service offers prospective and
existing customers a wide range of 3D CAD models free of charge. These
models can be quickly and easily downloaded over the Internet for
immediate importation into CAD designs. This saves the designer the
considerable time otherwise involved in laboriously redrawing Kistler
components. There are 46 different 3D file formats and 28 different 2D
file formats available. All of the data sheets for the products on offer
can also be obtained through this service. Quick and Easy Approach to
Design Data. The CAD data is made easily accessible by the clearly
arranged interface of the Kistler Part Community, which organizes a wide
range of Kistler products (force,
torque and
strain sensors, ... |
|
|
|
| |
|
More technical articles & products to this topic:
|
|
|
Find
all manufacturers and suppliers of
strain sensors, strain gages,
strain links, strain measurement |
|
| |
|
Find all Sensors &
Measurement devices
- Access to the Sensor Data base -
Sensors & Measuring
Systems Start page
|
|
|
|
|
| |
|
Copyright ©
Sens2B
International
Sens2B - Sensor to Business
Sens2B - Sensor to
Business is the international measurement technology and sensor suppliers directory / sensors portal.
Sens2B - Sensor to Business does not manufacture or sell any sensors or
measuring devices.
You will find in Sens2B - Sensor to Business database international sensor
companies, international manufacturers, suppliers and distributors of
all kind of sensors, transducers, transmitters, measurement instruments,
devices, probes, meters and detectors.
Powered by
Sens2B - WebDesign
***
Sensors: English /
Sensoren: Deutsch /
Capteurs: Français /
Sensores: Espańol /
Sensori: Italiano
Top-News: English
(sensors) /
Top-News: Deutsch (Sensoren) /
Top-News: Français (capteurs)
About us /
Contact us /
Conditions of use /
Registration /
Sensors by application /
Newsletter /
Sensor Categories Overview
Partners &
Links /
Sens2B- Reports (Sensor
Suppliers & Sensor Reports) |
|
|
