Microammeter M270, millivoltmeter M270
Also this device can be referred to: M-270, M 270.
M270 microammeter, M270 millivoltmeter contact is designed to measure current and voltage in DC, as well as for switching DC electrical circuits when the measured value setpoint.
Dimensions - 80×80×75 mm.
Accuracy class - 2,5; 4,0.
Measurement limits microammeter M270 - 50 mcA; 100 mcA; 200 mcA.
The internal resistance of the ammeter - 3 Ohm, 5 Ohm.
Operating range measurement millivoltmeters M270 - 15 mV; 30 mV; 75 mV; 150 mV.
Full-scale deflection current voltmeter - 4,5 mA; 5,0 mA.
Voltage across open contacts of the contact device - from 30 V to 50 V.
Current through the closed contacts - from 1 mA to 100 mA.
Power switching contacts - no more than 5 W.
Type of current through contacts - permanent.
Operating position M270 - vertical, horizontal.
Housing - dustproof, splashproof.
Confidence probability of failure up to 500 h - 0,9.
Minimum probability of failure up to 500 hours - not less than 0,7.
Weight - no more than 0,3 kg.
Operating conditions M270:
The ambient air temperature - from -30° C to +40° C.
Relative humidity at +30° C - 90%.
Level of resistance to mechanical stress - ordinary.
Performance - a common and tropical.
The manufacturer guarantees the conformity of devices existing technical requirements M270, when the conditions of operation, transportation and storage.