Shunts
An Instrument Shunt is a resistor connected in parallel with a measuring device to move the current range beyond a particular value for which the instrument is capable of measuring directly.
See Also: Current Shunts
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Working Standard Shunts
CSW
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CSW shunts are rated to 100 % continuous current with no loss of accuracy. They are largely immune from connection errors common to many shunts. All CSW shunts include ISO17025 accredited calibration through full current range.
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Product
30 A Current Shunt
34330A
Current Shunt
Measure current safely with this precision 0.001 ohm resistor housed in a plastic case surrounded by epoxy.
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Turbine Flowmeters
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Titan’s small turbine flowmeter range use a radial flow principle based on the Pelton wheel technique. This well proven method is the ideal way of measuring low rates of flow of low viscosity liquids. For these mini flowmeters, a jet of fluid is directed at a turbine that is mounted on robust low friction sapphire bearings. The geometry of the turbine and the fluid chamber ensures that the rotational speed of the rotor is proportional to the flow rate through the device. The use of this radial arrangement allows more energy to be imparted into the turbine, so the bearing drag is far less important. Furthermore, because more energy is available the bearings themselves can be a lot stronger so increasing the life of the flowmeter. For larger flows, some of the liquid can bypass the turbine chamber, which then behaves as a “shunt” to the metered fluid. Accuracy is still maintained and the output remains linear.
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Series Voltage References
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Analog Devices offers a broad line of series voltage references with low dropout, low power, and excellent line regulation. These devices are voltage references that are functionally similar to a three-terminal regulator. Some series voltage references are designed to also operate in shunt mode by biasing the output pin and leaving the input pin open circuit. Series mode voltage references have the advantage that they draw only load and quiescent current from the input supply.
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Isolation Amplifiers
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Isolation Amplifiers provide power supply designers with a higher performing, single chip alternative to isolation techniques based on optocouplers and shunt regulators. Analog Devices ADuM3190 and ADuM4190 isolated error amplifiers have a 400 kHz bandwidth, with 0.5% typical initial accuracy at 25°C and 1% total accuracy over the extended temperature range of –40˚C to +125˚C. This provides manufacturers of ac-to-dc and dc-to-dc power supplies with a significant upgrade in speed and operating temperature range, as well as a 5× improvement in transient response.
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Product
48-Channel High Performance Strain Gauge Measurement Instrument
EX1629
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48-Channel High Performance Strain Gauge Measurement InstrumentSupports quarter-bridge (120, 350Ω or user defined), half-bridge or full-bridge24-bit ADCs, sampling rates up to 25 kSa/sBuilt in programmable differential excitation -8V to 8VBuilt in selectable bridge completionConfigure signal conditioning excitation and bridge completion on a per channel basisSimple, low-cost wiring using RJ-45 telecom connectorsSupports TEDS for easy transducer detection and setupRJ-45 input connector reduces setup cost and timeBuilt in self-calibration and shunt calibrationSupports voltage, ratiometric and linear measurements other than strain measurements.
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9 Pin Breakout Interface
VSI-Breakout-9
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The VSI-Breakout-9 is a very useful tool in debugging signals or software in a system. It allows unlimited access to signals within the cabling that might otherwise be difficult to access. The board gives test points at each side of the connector and jumper with a easy to use tabbed shunt to allow for easy disconnection of any particular signal between the connectors. The jumpers also give an opportunity to inject a signal regardless of what signal was originally being driven.
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Shunt Voltage References
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Analog Devices offers a broad line of shunt precision voltage references that combine excellent accuracy and temperature stability with low noise and small packages. These devices operate in a manner that is functionally equivalent to a Zener diode. The bias current must be set higher than the sum of the maximum quiescent current of the voltage reference and the maximum expected load current. Since shunt voltage references are typically biased with a resistor, the voltage reference can operate on a wide range of input voltages.
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PXI Strain/Bridge Input Module
Strain/Bridge Input Module
PXI Strain/Bridge Input Modules feature up to eightchannels that support quarter-, half-, or full-bridge sensors at speeds up to 102.4kS/s. The modules provide increased accuracy, high data throughput, and a range of synchronization features. Optional features include remote sensing, internal bridge completion, and shunt calibration options per channel. PXI Strain/Bridge Input Modules are ideal for dynamic strain, load and pressure measurements, and test cell installations requiring accuracy and flexibility.
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Shunt Reactors
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ENTES Shunt Reactors are high quality devices which are designed to meet the inductive load demands.
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SparkFun Current Sensor Breakout
INA169
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The INA169 is a “high-side current monitor,” which means that you place a resistor (a “shunt resistor”) on the positive power rail and the INA169 measures the voltage drop across that resistor. The INA169 outputs a small current based on the measured voltage drop. If you place a resistor from the output of the INA169 to ground, you can measure the voltage at the output.
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High-Voltage Isolation Amplifier
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Knick Elektronische Messgeräte GmbH & Co. KG.
Measurement of DC or AC voltages up to () 3600 V and of large DC currents to about () 20 kA with shunt resistor or directly in the device to () 5A DC and AC. Variants with calibrated range selection.
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Medium Voltage Iron Core Oil-Immersed Shunt Reactor
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Iron core Oil-immersed Shunt Reactors act as an absorber of reactive power to increase energy efficiency of the power system.
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Stand Alone/ Bench Top Load Cell Amplifier/ Conditioner Module
MODEL TMO-2
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The TMO-2 Transducer Modules is a complete differential amplifier/signal conditioners with self contained power. The units provide excitation, balance and span adjustment via precision 10 turn pots, and shunt calibration necessary to couple a user supplied bridge type transducer to an indicating instrument. Full scale output is specified at plus or minus 10 VDC. The TMO-2 provides a floating shunt calibration circuit which applies calibration at the transducer, thereby eliminating errors due to line losses. The excitation supply incorporates a Wagner Ground to greatly improve Common Mode Rejection. The factory set bandwidth of the module is narrow to improve stability for applications such as weighing scales. The removal of a single capacitor will increase the frequency response DC to 60K Hz for dynamic data applications.
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Capacitance Bridge
1621
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The GenRad1621 Capacitance Measurement system is a completely self-contained system capable of capacitance measurements in increments as small as 0.1 aF (10-4 pF) and conductance measurements in increments as small as 100 aU (10-7 U; equivalent to a shunt resistance of 1010 M). Measurements are three terminal, with 2- or 3-terminal connection, and provision is also made for the connection of an external standard for comparison measurements.
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Current Shunt Module
CURS100
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The CURS100 converts a current signal output by a sensor or output device (e.g., 4 to 20 mA) to a voltage that can be measured by a datalogger. The 100 ohm resistor used for the current shunt allows currents up to 25 mA to be read on a 2500 mV range (CR10, CR10X, CR510, CR500) and currents up to 50 mA to be read on a 5000 mV range (CR23X, 21X, CR7, CR5000, CR9000, CR9000X).
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Tan Delta Test System
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Precision measuring bridge is designed for determining the capacitance and dielectric dissipation factor of liquid and solid insulants, cables, capacitors, line transformers, generators, motors, bushings etc. Furthermore it can also be used for power loss measurement on shunt reactors or similar apparatus. This system is suitable for both low and high voltage measurement at line frequency. Measurement reports can be printed. This measuring equipment has been specially developed to maximise efficiency in production and quality control environments. Its outstanding accuracy also makes it suitable for laboratory and research applications.
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Microprocessor Based Indicator
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Strong Anodized NEMA4X-IP56 ALUMINUM 1/8 DIN CASE Compact Design Provides Excitation to Transducers or Sensors Accept DC mV/V, V, mA Signal Proportional Analog Output V or mA Easy to Program using 4 ButtonsFront Panel Shunt Calibration User Programmable High & Low Set Point Standard No-Output or Relay Output Optional 8-Step Output, RS232, or BCD Output Available
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Precision AC/DC Current Shunt
1625A
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The BLI 1625A is a multiranging, high accuracy, active current shunt, for use in making NIST traceable measurements of currents from 10 microamperes to 100 Amperes. Very high measurement stability has been achieved in our shunt design by using special alloys, compensated by a proprietary Ballantine process to minimize temperature coefficient effects.
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Current Transformers And Shunts
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Current transformers allow the different measuring devices to provide reliable and traceable data on the trends involving consumption and production processes in electrical installations. Especially designed to be installed quickly, easily and securely, meeting the most demanding expectations of today's market, covering a wide range of primary currents as well as multiple secondary outputs, both for AC and DC measurement.
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Shunt
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Shunts are used with Moving Coil Ammeters for the measurement of current in DC Circuits.
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Transient Voltage Suppressors (TVS)
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A transient voltage suppressor (TVS) is an avalanche diode specially designed to clamp overvoltages and dissipate high transient power surges. ST’s Transil™ protection devices are able to shunt a high current surge for a short duration.
