The TOP Instrument YYD-1 measures stem strength of crops, offering computer connection, data storage, and multiple testing functions.
The YYD-1 stem strength tester is designed for agricultural research, allowing measurement of stem strength in crops such as corn, sorghum, and tobacco to evaluate lodging resistance. It connects to a computer for data analysis, stores up to 896 test values, and displays parameters like displacement and pressure.
The manual describes the instrument’s features, technical specifications, button functions, and step‑by‑step testing procedures. It also covers printing, synchronization, and troubleshooting for overload or freeze conditions, ensuring reliable operation in field and laboratory settings. This manual is written in Chinese.
| Model | YYD-1 |
|---|---|
| Maximum Load | 500 N |
| Resolution | 0.01 N |
| Power Supply | 220 V AC (charging) |
| Battery Continuous Operation | 6–8 hours |
| Operating Temperature Range | 0 °C to +60 °C |
| Operating Humidity | ≤ 80 % |
| Allowed Overload | 150 % |
The maximum load is 500 N, with automatic unit conversion.
The battery provides continuous operation for 6 to 8 hours.
Hold the clear key for 4 seconds to delete all stored test data.