M4258 ammeter, voltmeter M4258, M4258 milliammeter (M 4258, M-4258)
M4258 ammeter, voltmeter M4258, M4258 milliammeter designed to measure the direct current in portable or mobile units operating under severe service conditions.
Dimensions - 80h80h49mm.
Accuracy Class - 1.5 and 2.5.
Specifications M4258 devices ammeters, voltmeters, M4258, M4258 milliammeter:
The main parameters of the devices listed in Table. 1.
Settling time unit M4258 ammeter, voltmeter M4258, M4258 milliammeter - no more than 3 seconds.
Working position of the unit - vertically or horizontally.
Change the ammeter readings M4258, M4258 voltmeter, milliammeter M4258 caused a deviation of ambient temperature from normal for every 10K, not exceeding 0.8% - for accuracy class 1,5 and ± 1,2% - for accuracy class 2.5 .
Change the readings does not exceed 0.5% under the influence of an external constant magnetic field of 400A / m, when the instrument is not a ferromagnetic shield, as well as under the influence of closely placed with the same instrument.
Working hours M4258 device ammeter, voltmeter M4258, M4258 milliammeter to failure - at least 32 000 hours.
Average life - at least 6 years.