• Vaiseshika Electron Device

DECADE RESISTANCE BOX, Type 7400

Vaiseshika Electron Devices offers Decade Resistance Boxes, Type 7400. It is highly reliable. It is designed and fabricated to meet standard calibration requirements. It can serve the purpose of precision resistance calibration standards in components manufacturing industries for component comparisons in quality control and instrumentation laboratories for calibration of process control instruments, thermocouple, RTDs, temperature indicators and in engineering laboratories for resistance simulation and instrument calibration. It meets the stringent-accuracy, stability and reliability requirements, as manganin wires are used to construct standard resistors of accuracy 0.05% and 0.01% respectively; and gold plated switches are used to provide very low contact resistance with drift-free values up to 2,00,000 operations. Economical models that carry silver alloy and brass switches with silver plating providing 1,00,000 operations of drift-free values are also available.