Strain Gages
measure of displaced surface elements.
See Also: Strain Gauges, Strain Gage Amplifiers, Strain Gage Signal Conditioners, Strain
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Product
High-Temperature Strain Gages
ZWH-, ZWN-, & ZWP-Series
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ZWH-, ZWN-, and ZWP-Series strain gages are designed for dynamic and limited static strain measurement at hightemperature.These strain gages are manufactured using a round wire for superior bonding ability and performance. A high-fatigue wire (Option Z) is also available on each of the gages. These gages are supplied with a fiberglassreinforced tape carrier which holds the grid and leads in place during installation and are bonded using ceramic cements or Rokide® flame spray. The shelf-life of thesegages is 9 months.
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Product
Stress Analysis Strain Gages
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Bondable foil strain gages (strain gauges) available in thousands of possible pattern designs and combinations of grid alloys, backing materials, resistances, and options.
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Product
Load Washer
5000 Series
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The Load cell is a stainless steel sub-miniature strain gage based transducer with compensated temperature performance. This type provides measurements up to 20000 lbf with better than ±0.5% (full scale) non-linearity
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Product
Bridge Amplifier
90376
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This miniature, on-board, transducer amplifier is capable of supplying excitation voltage and amplifying millivolt signals from strain gage based transducers.
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Product
Rosette Strain Gauges
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Rosette Strain Gages have three measuring grids arranged at an angle of 0°/45°/90° or 0°/60°/120°
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Product
Digital FM Telemetry
90332
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The 90332 digital FM telemetry systems is designed to be used with full-bridge, strain gage sensors. The system features a miniature transmitter powered by a simple 9V battery, and a remote receiver capability of receiving the digital transmission over long distances. The digital technique eliminates many of the problems associated with traditional analog frequency modulated telemetry systems. Improvements with a digital technique include elimination of ripple, temperature drift characteristics, and higher signal resolution.
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Product
In Line Load Cell (200N-5000N)
100 Series
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Miniature Threaded in Line Load Cells are strain gage based transducers with temperature compensation and excellent overall performance. This type measures tensile and compressive loads up to 5000N with better than ±0.25% non-linearity.
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Product
Long Gauge Length Axial Extensometers
Model 3542L
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Jinan Testing Equipment IE Corporation
The dual flexure design makes the 3542L very rugged and insensitive to vibrations. These extensometers are designed for testing a wide range of materials including metals, plastics, composites and ceramics. Epsilon’s Model 3543 is recommended for applications requiring long gauge lengths and larger measuring ranges.The Model 3542L comes standard with Epsilon’s quick attach kit, making it easy to mount the extensometer on the test specimen. The quick attach kit can be removed, allowing mounting of the extensometer with springs or rubber bands.The 3542L extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.
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Product
Force Sensors
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TE Connectivity (TE) designs and manufactures force sensors for applications that require high performance or unique packaging, including electro-mechanical flight control, test and measurement and ultra-low cost OEM load cells for medium to high volumes. Based on our proprietary piezoresistive silicon strain gage (Microfused) technology, our sensors combine durability and long-term stability in extremely low cost packages.
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Product
Low Profile Compression Only Load Button Load Cell with Mounting
LBM SERIES
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The LBM Series (Load Button) load cells are offered for compression only applications where space is limited. This load button is a direct replacement for many of the same type and bolt patterns currently used in the industry. The matching surface must be flat and at least 2 inches in diameter. The loading diameter is slightly convex for accurate load distribution. Eight threaded mounting holes are provided on the bottom surface for fastening down from beneath. These sensors are manufactured from heat treated 17-4ph stainless steel, and the sensing element incorporates bonded foil strain gages of the highest quality. They are sealed for protection against most industrial environments.
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Product
sbRIO-9236, Non-Enclosed, 10 kS/s/channel, 350 Ω Quarter-Bridge Strain Gage, 8-Channel C Series Strain/Bridge Input Module
781580-01
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Non-Enclosed, 10 kS/s/channel, 350 Ω Quarter-Bridge Strain Gage, 8-Channel C Series Strain/Bridge Input Module - The sbRIO‑9236 measures dynamic strain on all channels simultaneously, allowing for synchronized, high-speed measurements. This capability is important for applications, such as impact tests, that require comparison across many channels at a particular instant in time. The sbRIO‑9236 includes built-in voltage excitation for quarter-bridge sensors. It also has 60 VDC isolation and 1,000 Vrms transient isolation, providing high‑common‑mode noise rejection and increased safety. Non-enclosed modules are designed for OEM applications.
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Product
Miniature Axial Extensometers
Model 3442
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Jinan Testing Equipment IE Corporation
Weighing as little as 8 grams, these miniature extensometers are designed to have very low operating force with minimal specimen influence. All use an improved version of Epsilon’s dual flexure design which makes them very rugged for their size. With a module height of 15.2 mm (0.6 inches), they will fit in the limited space between grips that is typical with small test samples. Gauge lengths can be as short as 3 mm or as long as 50 mm. A newly designed gage setting pin and assembly allows the gauge length to be set accurately and repeatably to ASTM and ISO requirements for all gauge lengths. Reengineered quick attach wire forms provide simple and secure specimen attachment. Wire forms for round and flat specimens are included, as well as flat, 3-point, and vee knife edges. The wire forms may be removed to enable mounting using elastic bands or springs. A tethering attachment point provides fall protection and enables counterbalancing of the extensometer’s weight when testing delicate specimens.Model 3442 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller and Epsilon will equip the extensometer with a compatible connector wired to plug directly into the controller. For systems lacking the required electronics, Epsilon can provide a variety of solutions for signal conditioning and connection to data acquisition systems, chart recorders, or other equipment.
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Product
MINITAURs - 8-channel universal DAQ system
MINITAUR-S
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Mixed signal 8-channel data acquisition system and multichannel data logger with cutting-edge technology at an attractive price. Universal analog inputs can accommodate various signals like strain gage, IEPE, voltage, current, RTD, thermocouple, and LVDT.
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Product
High Elongation Extensometers
Model 3800
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Jinan Testing Equipment IE Corporation
The main body of this unique extensometer remains stationary during testing, held in position by the adjustable magnetic base included. Only the very light, small traveling heads move as the sample elongates during a test. These attach to the sample with small spring clips. Each head pulls a cord out from the extensometer as the head moves. These models use high precision, low friction potentiometers, and, as a result, have a wide range of factory selectable outputs. The extensometer is driven by an excitation voltage and has output proportional to the input. They can be provided with high level outputs (approximately 2-8 VDC) or ones that mimic strain gaged devices (2-4 mV/V). When set to mimic strain gaged extensometers, the Model 3800 can be used with virtually any signal conditioning electronics designed for strain gaged sensors. The potentiometers employ a hybrid wire wound around conductive plastic, which provides excellent long term stability. The output from the extensometer is readily interfaced with most existing test controllers, and may be directly input to data acquisition systems and chart recorders. Please let us know at the time of order what type of output and connector you require.
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Product
USB Sensor Link
90386
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The 90386 is a portable sensor interface that powers and processes strain gaged based sensor into USB compatible signals. No need for additional signal processing or special PC cards.
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Product
High Temperature Furnace COD Gages (1200 C or 1600 C)
Model 3548COD
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Jinan Testing Equipment IE Corporation
These COD gages mount on a water-cooled bracket, which is mounted on the furnace side cut-out or with optional load frame support brackets. The standard temperature version (to 1200℃) is supplied with high purity alumina rods. The high temperature option is furnished with alpha grade silicon carbide rods. Rods are made to order to the length required for your furnace. Mounting brackets may be integrated with the furnace cut-out. Epsilon can also provide optional load frame mounting brackets to fit your test frame. Contact edges on the test sample should be somewhat rounded (not sharp knife edges) for best performance with this model. The Model 3548COD extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.
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Product
Axial Extensometer
Model 3542
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Jinan Testing Equipment IE Corporation
These extensometers are designed for testing a wide range of materials, including metals, plastics, composites and ceramics. All will work in both tension and compression. The dual flexure design makes them very rugged and insensitive to vibrations, which permits higher frequency operation.They come standard with Epsilon’s quick attach kit, making it possible to mount the extensometer on the test specimen quickly and easily with one hand. The quick attach kit can be removed, allowing mounting of the extensometer with springs or rubber bands.The Model 3542 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.For gauge lengths 100 mm (4 inches) or greater see Model 3542L.
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Product
Bolt Extensometers for Proof Load Testing
Model 3565
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Jinan Testing Equipment IE Corporation
The Model 3565 uses hard conical points to contact the bolt at the center of the head and at the bottom. It is fully adjustable for different length bolts ranging from 25 mm (1 inch) in length to 150 mm (6 inches) standard. Extension beams are available for longer bolts. The standard maximum measuring range is 1.25 mm (0.05 inches). Generally, on longer bolts this extensometer will be self-supported without requiring any centering marks or punch marks on the bolt. For shorter bolts these marks may be required. If the conical pins are sharp, marks are often not needed even on the shortest bolts.The extensometer has a zero adjustment screw to adjust the length between the contact pins. This is used to set the output voltage to zero, which corresponds to the correct starting position for the test. It also includes a breakaway lower arm. In the event a bolt should fail, the breakaway arm snaps free, helping to prevent damage to the extensometer. This is easily re-installed. In the event that bolt failures are likely during a test, it is recommended the user attach a cord around the upper part of the beam and tie the other end to the test frame to prevent the extensometer from falling. The conical point contacts included with the extensometer are made from tungsten carbide.The Model 3565 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.
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Product
Extensometers for Indirect Tensile Testing of Asphalt
Model 3911
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Jinan Testing Equipment IE Corporation
For indirect tensile testing, such as for resilient modulus, these extensometers measure the lateral deformation of specimens. They are self-supporting on the sample and clip on in seconds. The traditional way this deformation has been measured was prone to errors caused by slight rocking of the sample as it is loaded. The self-supporting design of the Model 3911 eliminates this problem. This unit will handle the dynamic pulse requirements of resilient modulus testing.The speed of mounting makes test set-up much faster than with the older method. The pivot mounting used ensures that the specimen contact pads meet the often uneven asphalt surface as well as possible. The measuring range options available allow a wide range of testing, yet can easily measure the sometimes very small displacements required.The Model 3911 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.
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Product
NI-9236, 10 kS/s/channel, 350 Ω Quarter-Bridge Strain Gage, 8-Channel C Series Strain/Bridge Input Module
785996-01
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10 kS/s/channel, 350 Ω Quarter-Bridge Strain Gage, 8-Channel C Series Strain/Bridge Input Module - The NI‑9236 measures dynamic strain on all channels simultaneously, allowing for synchronized, high-speed measurements. This capability is important for applications, such as impact tests, that require comparison across many channels at a particular instant in time. The NI‑9236 includes built-in voltage excitation for quarter-bridge sensors. It also has 60 VDC isolation and 1,000 V rms transient isolation, providing high‑common‑mode noise rejection and increased safety.
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Product
Socket Wrench Torque Sensor Rotating Type
RSS SERIES
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Our RSS Series rotating socket wrench torque sensors are available in ranges from 10 ft-lbs. through 250 ft-lbs. and provide accurate measurements of bolt or nut wrenching torques. These sensors are bi-directional so both tightening and break-away torques can be measured. Unlimited rotation of the ball bearing supported sensor shaft allows monitoring of the total fastening cycle. The sensing element incorporates bonded foil strain gages of the highest quality, along with coined silver slip rings and two silver graphite brushes per ring for data transmission.
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Product
Strain Gage Testing
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Response Dynamics Vibration Engineering, Inc.
Although strain measurement is often a key part of a root cause diagnosis, our analyses often also involve measurements of other parameters such as acceleration, relative displacement, pressure, temperature, flow, speed, load, dynamic stiffness, etc, to explore multiple parameters that may have a cause/effect relationship with the problem at hand. These measurements form part of a fact based hypothesis for the cause of the problem at hand. We use stain gauge testing and/or stain modeling and analysis, in conjunction with our structural dynamics expertise to characterize all the important pieces of the puzzle that come into play with dynamic strain issues (See Diagnostic Testing).
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Product
NI-9235, 10 kS/s/channel, 120 Ω Quarter-Bridge Strain Gage, 8-Channel C Series Strain/Bridge Input Module
785995-01
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10 kS/s/channel, 120 Ω Quarter-Bridge Strain Gage, 8-Channel C Series Strain/Bridge Input Module - The NI‑9235 measures dynamic strain on all channels simultaneously, allowing for synchronized, high-speed measurements. This capability is important for applications, such as impact tests, that require comparison across many channels at a particular instant in time. The NI‑9235 includes built-in voltage excitation for quarter-bridge sensors. It also has 60 VDC isolation and 1,000 Vrms transient isolation, providing high‑common‑mode noise rejection and increased safety.
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Product
Signal Conditioning Instrumentation
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Columbia Research Laboratories
Columbia offers a wide variety of Signal Conditioning Instrumentation for a variety of Sensor types. These range from Laboratory as well as Airborne Charge Amplifiers, Differential Charge Amplifiers, In-Line Charge Converters, Constant Current Power Supplies and ICP Compliant Amplifiers all in support of Columbia's extensive Piezoelectric product line. Additionally Columbia offers unique Strain Gage Instrumentation Amplifiers which provide built in auto zeroing of gage offset voltages which can increase typical measurement accuracies. These robust Signal Conditioning products have been flight qualified on many current military aircraft and missile programs and are now available for your distinctive program needs.
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Product
Torque Sensors
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In universities and industry, for basic research or quality assurance: Kistler torque sensors guarantee precise definition of the power and friction values of drives, transmissions and pumps. Strain gage technology (DMS) is a powerful solution for measurements on rotating shafts, and also for long-term dynamic and static measurements. Maximum precision, the most rigid structure possible and high temperature stability: thanks to these assets, DMS sensors can accomplish the most demanding tasks. Piezoelectric reaction torque sensors offer convincing features such as exceptional overload protection, high signal resolution and a wide frequency range. They are ideal for measurement tasks when conditions are difficult due to geometry, temperature range or dynamics.
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Product
Low Profile Universal Tension or Compression Load Cell
LPU SERIES
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Our LPU Series are low profile, universal tension or compression "pancake" type load cells. They are available in 14 ranges from 100 lb through 50,000 lb Hold down bolt holes are provided through the outer diameter and a threaded hole provided through the center for pushing or pulling from either end. The ALB load buttons located in our accessories section, are ideal for compression applications. The LPU Series are made from 17-4ph heat treated stainless steel. The sensing element incorporates bonded foil strain gages of the highest quality and are sealed for protection against most industrial environments.
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Strain Sensors
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Conventional strain sensors are based on strain gage technology. In order to effectively measure the strain values in a force or load measurement application, a full, 4 element strain gage bridge circuit is utilized. The configuration is known as a Wheatstone Bridge Circuit. A Wheatstone Bridge has a very linear output in it’s midrange. That being considered +100% to -100% of range. Unfortunately, a Wheatstone Bridge becomes non-linear above the upper and lower extremes of range. Therefore, significant errors can result above the end points when attempting to take precision measurements. It is particularly important to take accurate measurements in some R&D or control applications. To avoid the mentioned error issues, PCB manufactures quartz piezoelectric strain sensors that output the same mV/microstrain sensitivity throughout the entire useful range. Thus, accuracy is improved and control requirements are enhanced that may occur at positive extremes of the measurement range. The models RHM240 and model 740B02 series sensors are the strain sensors for these applications.
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Product
General Purpose Reaction Dual Shaft Torque Sensor
STS SERIES
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The STS Series is our general purpose reaction type shaft torque sensor. They are often installed between devices such as motors, switches, shafts or axles, and their mounting plate to provide bi-directional torque output. They are available in six capacity ranges from 600 in-lb through 12,000 in-lb, and are made from 17-4ph heat treated stainless steel. The sensing element incorporates bonded foil strain gages of the highest quality and are sealed for protection against most industrial environments.
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Product
Socket Wrench Torque Sensor Reaction Type
SWS SERIES
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Our SWS Series reaction type socket wrench torque sensors are available in ranges from 10 ft-lbs. through 1000 ft-lbs. and provide accurate measurements of bolt or nut wrenching torques. These sensors are bi-directional so both tightening and break-away torques can be measured. These low cost sensors deliver high accuracy and outstanding frequency response. alibration of mechanical torque wrenches may be performed with this sensor. The sensing element incorporates bonded foil strain gages of the highest quality.
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C Series Universal Analog Input Module
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The C Series Universal Analog Input Module helps you perform multi-purpose measurements. This module includes built-in support for accelerometer, powered sensor, full-bridge, and voltage measurements as well as quarter-bridge, half-bridge, 60 V, and current measurements using measurement-specific adapters. You also can choose options to measure signals from sensors such as strain gages, resistance temperature detectors (RTDs), thermocouples, load cells, and other powered sensors.The C Series Universal Analog Input Module includes the NI-DAQmx driver and configuration utility that simplify configuration and measurements. NI-DAQmx supports NI programming environments as well as Python, ANSI C, C#.NET, and MathWorks MATLAB® software.
