Measuring ground resistance M416 (M 416, M-416)
Designed to measure the earth resistance devices, resistances, and can also be used to determine the resistivity of the soil.
Measuring ground resistance M416 are designed to measure earth resistance, resistances, and can also be used to determine the resistivity of the soil. Measuring range from 0.1 ohms to 1000 ohms. Measuring ground resistance M416 is designed to operate at ambient temperatures from -25 ° C to +60 ° C and a relative humidity of 95% at a temperature of 35 ° C.
The device has Four measuring range:
0.1 Ohm - 10 Ohm;
0.5 Ohm - 50 Ohm;
2 ohms - 200 ohms;
10 Ohm - 1000 ohms
Main error instruments does not exceed ± (5 + (N/Rx-1)) Percentage of the measured value when the resistance of auxiliary earthing probe and not more than 500 ohm range of 0.1 - 10 ohms to 1000 ohms range 0.5 - 50 ohms to 2500 ohms range of 2 - 200 ohms to 5000 ohms range 10 - 1000 ohms, where N - the final value of the range, Ohm, Rx - the measured resistance in ohms. Power supply M416 - dry cell voltage of 4.5 V. Current consumption - no more than 90 mA. One set of dry cells provides at least 1000 measurements. The voltage at the terminals of the device in an open external circuit and the nominal voltage of the power supply - no less than 13 V. Error due to the influence of stray current frequency of 50 Hz is less than half the basic error.