Amperevoltommeters '' AVO-5M '' and '' AVO-5M1 ''.
Instruments for adjusting and controlling the PTA.Amperevoltommeters "AVO-5M" and "AVO-5M1", respectively, since 1955 and since 1957, were produced by the Omsk plant "Elektropribor". The AVO-5M amperevoltommeter is a multi-range electrical measuring device used to measure the voltage and magnitude of alternating and direct currents as well as to measure resistances up to 30 Meg. A multi-range portable ampere-voltmeter of a magnetoelectric system of the AVO-5M1 type is designed to measure current and voltage in DC and AC circuits, as well as measure DC resistance. The device is used at an ambient temperature of -10 ° C to +50 ° C and a relative humidity of 30 ... 80%. The device has measurement limits: DC strength 60 mka, 300 mka, 3 ma, 30 ma, 120 ma, 1.2 a, 12 a. DC voltage Z v, 12 v, 30 v, 300 v, 600 v, 1200 v, 6000 v. AC current: 3 ma, 30 ma, 120 ma, 1.2 a, 12 a. AC voltage 3, 12, 30, 300, 600, 1200, 6000 V. The device has a DC resistance: 3 ... 300 ohms, 0.3 ... 30 ohms, 0.03 ... 3 Mg. The device operates at signal decibels from -12 to +78 dB. On large ranges, measurements are used with voltage dividers. The input impedance of the instrument is 20 k / V for all DC voltage limits and 2 k / V for AC voltage limits. Dividers are included with the device.
