Fluke Corporation has introduced the Fluke A40B Precision Current Shunt Set, a range of precision devices that simplify the task of making precision current measurements in the laboratory.
The Fluke A40B Precision Current Shunt Set consists of 14 low-inductance coaxial current shunts, adapters and connectors and a rugged transit/storage case.
Designed for currents from 1mA to 100A, the current shunts are for laboratory use in making directly measured absolute ac or dc current measurements as well as ac/dc current transfer measurements.
Users can make precision measurements in a single step process rather than by complex ac/dc transfer methods.
The physical construction and the components used in the current shunts ensure the frequency response is flat (amplitude displacement error relative to dc resistance).
The phase displacement at 100 kHz is negligible in all but the highest accuracy measurements.
With their excellent dc resistance stability, the shunts can be used to directly measure current through their full bandwidth.
These characteristics make the Fluke A40B shunts ideal for traditional precision current applications such as calibrator verification.
The wide current range allows verification of high current transconductance amplifiers.
The low phase shift error is critical for measuring non-sinusoidal wave shapes, as found in power quality or sampling digital wattmeter measurement applications.
The shunts come in four sizes.
The full set includes the following: four fully enclosed shunts: 1 mA, 10 mA, 20 mA and 50 mA; five small size radial shunts: 100 mA, 200 mA, 500 mA, 1 A and 2 A; three medium size radial shunts: 5 A, 10 A and 20 A; and two large size radial shunts: 50 A and 100 A.
Voltage output is nominally 0.8 volts for the nominal rated current input.
The output is measured by a voltmeter or detector, such as precision voltmeters, ac measurement standards, ac/dc transfer standards or thermal voltage converters, by fitting them to a variety of metrology applications.
Shunt resistance minimises interaction with detector instrumentation.
The radial style shunt design gives high performance with minimal external magnetic fields.
The open nature of the physical design maximises air flow so the shunts have minimal power coefficient effects.
This permits each shunt to be used over a range of currents with stable resistance characteristics.
Each Fluke A40B Precision Current Shunt comes with a report of traceable calibration including data.
The set includes a variety of connectors and adapters to enable connection to other test instruments.
A fibreglass case is available for transportation and storage.
