Vintage Soviet Micro Ammeter Voltmeter M2042 Rare Measuring Device From The Sovi

The M2042 precision microampere voltmeter is used to measure current and voltage in DC circuits. End values of measuring ranges:current - 10 μA; 25uA; 50uA; 100uA; 250uA; 500uA; 1000uA;voltage - 1V; 2.5V; 5V; 25V; 50V; 100V; 250V.The limit of permissible basic error in all measurement ranges is ±0.2%.M2042 microampere voltmeters are used to measure current and voltage in DC circuits. M2042 microampere voltmeters are designed to operate at an ambient temperature of 10 to 35° C and relative humidity up to 80% at a temperature of 25° C.The main technical data of the laboratory microampere voltmeter M2042:End values of measuring ranges:current - 10 μA; 25uA; 50uA; 100uA; 250uA; 500uA; 1000uA;voltage - 1V; 2.5V; 5V; 25V; 50V; 100V; 250V.Voltage drop on current measurement ranges from 63 to 628 mV. Full deflection current on voltage measurement ranges 0.01 mA. The settling time of readings on the range of 10 μA is no more than 6 s, on the other ranges no more than 4 s. The normal values of the influence quantities, which characterize normal conditions of use, are as follows:ambient air temperature, °С - 20±2;relative air humidity, % - 30-80;atmospheric pressure, kPa - 84-106.7;orientation of instruments relative to the Earth's magnetic field - any;coefficient of the variable component of direct current and voltage - 1.The limit of permissible additional error of the M2042 device must be equal depending on:from changes in ambient temperature for every 10 °C in the range from 10 to 35 °C to the limit of the permissible basic error;from a slope of 5 ° - ± 0.2%;from the influence of an external magnetic field - ± 0.3%;from the influence of a ferromagnetic base - ± 0.1%;from the influence of a nearby device - ± 0.15%.Insulation test voltage - 1.5 kV. The average time between failures of the M2042 device under normal conditions of use is 32500 hours.Information on the total mass of precious materials and non-ferrous metals:silver 0.01118 g;platinum 0.001 g;aluminum and its alloys 368 g;cobalt, its compounds and alloys 11 g;copper and copper-based alloys 142.5 g.