Digital Earth Resistance Meter

HM2571 digital earth resistance meter is used to test earth resistance of all kinds of devices and Conductor resistance of low resistance in electric power, post, oil, chemistry, communication, mine industry and so on.It also can test resistance rate of soil and voltage to earth.

Digital earth resistance meter abandons the traditional manual manual power generation method, adopts advanced medium and large-scale integrated circuits, and uses DC/AC conversion technology to combine the three-terminal and four-terminal button measurement methods into a new type of ground resistance. Measuring instrument.

The working principle of digital earth resistance meter is that, the DC/AC converter converts DC into low-frequency constant current AC.which forms a loop through the auxiliary ground electrode C and the measured object E.  An AC voltage drop is generated on the measured object and is sent through the auxiliary ground electrode P The AC amplifier is amplified, and then sent to the meter head for display after detection. With the aid of the rate switch, three different limits can be obtained: 0~2Ω, 0~20Ω, 0~200Ω.

1.The digital earth resistance meter adopts high-strength aluminum alloy as the casing. 

2.In order to prevent power frequency and radio frequency interference, the circuit adopts a phase-locked loop synchronous tracking detection method,with a switched capacitor filter.To make the instrument have a better anti-interference ability.

3.Using DC/AC conversion technology ,to convert DC to AC low-frequency constant current, for easy measurement.

4.The value of auxiliary grounding resistance is allowed to vary between 0~2KΩ (RC) and 0~40KΩ (RP),Does not affect measurement results.

5.The meter automatically adjust the balance, 3 (1/2) LCD display.

6.digital earth resistance meter can also measure low-resistance conductor resistance, soil resistivity and AC ground voltage.

7.If the test circuit fails, the meter displays "1" for overflow, which conforms to conventional measurement habits.

Test earth resistance 

Test soil resistivity 

Test conductor resistance  

Test earth voltage 

1.We guarantee that professional engineers and technicians will answer qustions by telephone,email or other channel within 1 hour, deal with equipment failure in time within 24 hours.

2.Upon receipt of the client's request for after-sales service,we promises to provide solutions within 48 hours.

3.We will provide relevant technical training and technical information according to client's requirements.

4.The product can be repaired free of charge for one year and maintained for life.