1. In the room temperature range of 10℃～35℃, the relative humidity is not more than 80%;

2. In a vibration-free environment, there is no corrosive medium and electromagnetic field interference around;

3. The fluctuation range of the power supply voltage should not exceed ±10% of the rated voltage;

4. The host must be reliably grounded and firmly fixed on the foundation.

It is mainly used for the compression test of metal, non-metal, such as concrete, cement, masonry, etc.