The AT2511 is an economical DC low resistance Tester that is an upgraded version of the AT511A.
Compared with its predecessor, AT511A, AT2511 has a wider test range: 0.01mΩ~200.0kΩ, and the maximum display number is 5000. At the same time, the test speed is improved: up to 10 times/sec and stable readings. The improved automatic range test circuit and the design of the all-electronic switch can switch from the highest range to the lowest range instantaneously.
AT2511 uses a 0.8-inch high-brightness digital tube display, full Chinese buttons and indicators, making the instrument display clearer, and the fool-style operation interface is also easy to use.
The AT2511 uses superior low current test characteristics, and is especially suitable for resistors that are sensitive to test current, such as platinum thermal resistance, copper thermal resistance, PTC ceramic thermal resistance, alloy wire DC resistance, DC resistance of current protection devices, etc.
The AT2511 is also suitable for measuring a wide range of contact resistances; Winding resistors for transformers, inductors, motors, and deflection coils; wire resistance; metal riveting resistors for vehicles, ships and aircraft; Printing plate lines and porosity resistors, etc.
● 0.8 inch large character highlight digital tube display
● Full Chinese keys and indicators
● Fully automatic test and manual ranging function
● Comparator function
● Full-scale short-circuit clearing function
● Basic accuracy: 0.2%
● Maximum 5000 digits are displayed
● Eight-range automatic or manual test
● Provide 0.01mΩ~200.0kΩ test range. Fully electronic switch control, no life limit, instantaneous range switching
● Test speed: fast: 10 times/sec Slow: 3 times/sec
● Enhance impact protection





● Measure the internal resistance of small Wire diameter coils (e.g. headphone coils)
● Resistance measurement of the sensor
● Measurement of resistance value of protection device
● Winding resistors for transformers, inductors, motors, and deflection coils
● Various contact resistances
● Solder joint contact resistance
● Metal flaw detection, etc
