- BrandМегомметр Уманский завод, ОАО
- Country of manufactureUkraine
Resistance meter of grounding F4103 - M1prednaznachen for measurement of resistance of grounding devices of any geometrical sizes, unit resistance of soil and pure resistances in the presence and (or) lack of hindrances.
Measurement ranges and legitimate value of resistance of potential and current electrodes are specified below:
|Measurement range, Ohm||Range of the allowed values of resistance of electrodes, kOhm|
|Rp1, Rp2 or their total resistance (Rp1 + rp2)||Rt1, Rt2 or their total resistance (Rt1 + Rt2)|
|0 - 0, 3; 0 - 1||0 - 2||0 - 1|
|0 - 3; 0 - 10||0 - 6||0 - 3|
|0 - 30; 0 - 100; 0 - 300;
0 - 1000; 0 - 3000; 0 - 15000
|0 - 12||0 - 6|
|Primechaniye. Rt1, Rt2, Rp1, Rp2 - symbols of resistance of the electrodes connected to the corresponding clips.|
Accuracy ratings according to GOST 8. 401 - 80 - 4, 0 on the range of (0 - 0, 3) Ohms and 2, 5 on other ranges.
Limits of the given error allowed main are equal to ±4% on the range of (0 - 0, 3) Ohms and ±2, 5% on other ranges from a finite value of range of measurement.
Frequency of measuring current is ranging from 265 Hz to 310 Hz.
Alternating voltage on clips of T1 and T2 at the opened external chain no more than 36 Century.
Power supply of the measuring instrument is carried out from nine elements 373, A373 (R20, LR20) or from an external source of a direct current from 11, 5 V till 15 Century.
Consumption current from the power source no more than 160 mA.
- ambient air temperature from minus 25 °C to plus 55 °C;
- relative air humidity to 90% at a temperature plus 30 °C.
The mass of the measuring instrument is no more than 2, 2 kg.
Leading dimensions of 305 mm x 125 mm x 155 mm.