Vibration string strain gauges (mainly installed on various structural surfaces such as pipelines, pile foundations, and bridges, to measure the strain on the surface of the structure. The built-in digital temperature sensor can synchronously measure the temperature of the deployment point, used for temperature correction of surface strain gauges.

Vibration string pore water pressure gauge, also known as seepage pressure gauge, is a pressure sensor used for long-term monitoring of pore water pressure and groundwater level, and can synchronously measure the temperature of buried points; It can also be used for measuring reservoir water level or groundwater level.

Earth pressure gauge (earth pressure gauge) is an embedded pressure sensor mainly used to measure the stress of the soil inside structures such as earth and rock dams, soil lifts, slopes, roadbeds, retaining walls, and tunnels. It is suitable for long-term automated monitoring. The main components of the sensor are made of special steel and can be used in harsh environments. Its performance is excellent, with good accuracy and sensitivity, excellent waterproof performance, corrosion resistance, and long-term stability. After improving cable protection measures, it can be directly buried in compacted soil with high requirements for instruments.