Reochordny bridge `` R-38 ''.
Instruments for adjusting and controlling the PTA.The R-38 reochordny bridge has been produced since 1953. The device is a balanced bridge with a step-adjustable shoulder ratio. The device is designed to measure the electrical conductivity of electrolytes in alternating current. The bridge is powered from the AC mains. The working area of the bridge readings is in the range of 0.3 ... 30,000 Ohm, which makes it possible to measure the specific conductivity of various electrolytes and is divided into 5 measurement limits, each of which is characterized by a certain resistance of the comparative arm of the bridge. The latter is made in the form of a set of resistances 1, 10, 100, 1000, 10000 Ohm, switched on using a lever switch. In 1967 the device was modernized with the same name.
