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With the RESISTOMAT® model 2304 burster presents a new generation of resistance measuring devices, which sets new standards in measuring processing, accuracy, resolution, long-term constancy and user supporting programs. The trend setting device works on the basis of a further developed 4-conductor-ratio procedure where the measuring current impressed flows through test specimen and internal reference resistances. The reference resistance, defined on few ppm, determines nearly exclusively the error in measurement, so that a high accuracy of 0.01 % F.S. at resolutions up to 10 nOhm in measuring ranges of 200 µOhm up to 20 kOhm is reached. By realizing this resolution the test automat is the established world record leader and thus guarantees to all industry users the highest possible certainty for the measurement of even the smallest resistances. In the research field measuring problems can now be managed which up to now have been insoluble. The operation of the measuring automat is effected menu controlled on 4 user levels. On these levels measuring mode, evaluation, special programs, and code choices are defined. The basic model has already IEEE-, 488-, RS 232- and RS 485-interfaces as well as relay contacts for classifying and sorting processes. Additionally as a standard feature a connection for automatic temperature compensation is included in the delivery as well as opto-decoupled inlets and outlets for "Start", "Stop", "Measure" and "Measure disturbed". 9 automatically switchable measuring ranges between 200 µOhm and 20 kOhm are available. The included IEEE 488, RS 232 and RS 485 interfaces enable an optimal integration of the unit into systems. User specific measuring programs are already installed and thus make the universal application easy, wherever resistances have to be measured and evaluated exactly: in laboratory, test field, production, when trimming (beam display), at coils and windings (special current control), for the determination of cooling curves (storage), for the definition of special resistances (unit correct), measurement at cable drums or contacts,... . There is i.e. a specific measuring process for inductive parts like coils and huge transformers as well as a bar indication for the simplification of test field calibrations.
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