YD2511 type DC low resistance tester instruction manual, can be widely used to measure the resistance of various coils, motor transformer winding resistance, various cable conductor resistance, switch plug, socket and other electrical components contact resistance and metal riveting resistance.
The YD2511 is a direct‑current low‑resistance tester designed for measuring very small resistances such as coil windings, motor transformer windings, cable conductors, contact resistance of switches and connectors. It uses a chopper‑stabilized zero‑drift amplifier and a micro‑processor to achieve high accuracy, and a five‑terminal measurement method to eliminate lead and contact resistance.
The manual describes the instrument’s technical specifications, working principle, panel layout, step‑by‑step operation, and accessories with warranty information. Safety precautions and troubleshooting tips are also provided. This manual is written in Chinese.
| Display | 4½‑digit seven‑segment display |
|---|---|
| Measurement range | 10 µΩ – 1.9999 kΩ (five ranges) |
| Resolution (range 1) | 0.01 µΩ |
| Test current (range 1) | ≈100 mA |
| Test current (range 5) | ≈0.01 mA |
| Pre‑heat time | 15 minutes |
| Measurement speed | 8 readings per second |
| Accuracy | ±0.2 % (reading) ±0.01 % (full‑scale) at 20 °C |
The instrument requires a pre‑heat time of 15 minutes.
It can take up to 8 measurements per second.
The PASS lamp lights when the measured value is between the lower and upper limits.