Amperevoltommeter `` Ts-438 ''.
Instruments for adjusting and controlling the PTA.Since 1965, the amperevoltommeter "Ts-438" has been produced by the Zhytomyr plant "Elektroizmeritel". The combined device "Ts-438" is intended for electromechanics servicing automatic blocking and electrical interlocking devices and is recommended instead of the device of the "Ts-760" type, as well as for communication electromechanics. The device is designed to measure the strength and voltage of a direct current, the effective value of the strength and voltage of an alternating current of sinusoidal and pulse form, and resistance to direct current. More details below.
