The loop resistance tester is a high-precision, digital switch testing instrument carefully developed in accordance with IEC standards and relevant national regulations, using its own technical advantages. The instrument uses sine wave inverter, high-power constant current switching power supply technology, and can measure micro-ohm contact resistance. It is widely used in the measurement of contact resistance, loop resistance of various switches and electrical appliances, and contact resistance of cables, wires and welds.

Operating procedure:

⒈Connect according to the four-terminal connection.

⒉Turn on the power.

⒊Press the measurement key (if the current display A value is less than 100A, you can calibrate it through the panel current fine-tuning).

⒋After measuring the displayed value, save the data.

⒌After the measurement is over, please turn off the power.

⒍Please take good care of the test clamp.

Note for loop resistance tester:

1. Before turning on the power switch, the test button should be popped up (in the non-test state), and the current adjustment button should be turned counterclockwise to "zero".

2. The instrument should be placed in a dry, ventilated room without corrosive gas.

3. After the test, be sure to wait for the power supply to be discharged before removing the test line and other devices.