Brief Technical Description of Portable Micro Resistance Tester L100E



I. Product Introduction

The portable micro resistance tester is a new loop resistance testing instrument developed based on modern industrial design concepts. The product is a handheld instrument, small in size, easy to carry, powered by a built-in lithium battery, especially suitable for field use. It adopts the "four-wire" current and voltage testing method, which can meet the measurement of tiny resistances in high-voltage switches, circuit breakers, relay metal contacts, etc.

II. Safety Measures

1. Be sure to read this manual carefully before using the instrument;

2. The operator of the instrument should have general knowledge of electrical equipment or instruments;

3. The instrument can be used indoors and outdoors, but should avoid places with rain, corrosive gases, excessive dust, high temperature, direct sunlight, etc. The instrument should avoid severe vibration;

4. Repair, maintenance, and adjustment of the instrument should be carried out by professionals;

5. It is strictly forbidden to remove test leads during testing;

6. This instrument is designed for measuring purely resistive test circuits and is not suitable for measuring inductive circuits;

7. The built-in rechargeable lithium battery should be regularly charged and maintained. For long-term storage, it should be charged at least once a month. Only use the dedicated charger provided with the instrument to charge the battery.

III. Functional Features

1. Powered by lithium battery, one charge can support more than 600 consecutive tests, making the testing process simple and convenient;

2. Output current up to 100A, multiple current levels selectable, wide testing range;

3. At 100A test, the maximum test time can reach 60 seconds, meeting various field applications;

4. Wide range and high accuracy, up to 4mΩ at 50A;

5. Equipped with comprehensive protection functions such as open circuit protection and overheat protection;

6. 5.0-inch ultra-large industrial-grade high-brightness color LCD screen, still clearly visible under strong sunlight;

7. With local storage and USB storage, convenient for data saving.

IV. Technical Specifications

1. Test current: 100A, 50A;

2. Range: 100A: 0 ~2mΩ; 50A: 0 ~4mΩ;

3. Minimum resolution: 0.1uΩ;

4. Accuracy: ±0.5% (reading ± 5 digits);

5. Output time: 1S, 3S, 10S, 20S, 30S, 60S;

6. Battery charging time: 4 hours;

7. Can store 100 sets of data;

8. One charge can be used for 600 tests;

9. Host dimensions: 250mm×155mm×70mm;

10. Host weight: 1.94Kg.