Product category : Electronic testing and measuring instruments

To meet the standard calibration requirements, high-precision decade resistance boxes [type 7400] are manufactured and offered by vaiseshika electron devices. Following are some electrical features of these resistance boxes which include: to meet the stringent accuracy, stability and reliability requirements, the manganin wires have been used to construct standard resistors for accuravy 0.05 per cent and 0.01 per cent respectively. Further the gold plated switches have been employed in the best grade of decade resistance boxes to provide very low contact resistance with drift-free values up to 2,00,000 operations. The economical models carry silver alloy and brass switches with silver plating providing 1,00,000 operation soft drift-free values. Following are some of the salient features ofthese resistance boxes which include: these decade resistance boxes can serve the purpose of precision resistance calibration standards in components manufacturing industries for components comparisons in quality control and instrumentation laboratories for calibration of process control instruments, thermocouple, rtds, temperature indicators and in engineering laboratories for calibration of process control instruments, thermocouple, rtds, temperature indicators and in engineering laboratories for resistance simulation and instrument calibration.