520 tide gauge is a British company manufacturing precision AQUATEC self-contained pressure type of tide gauges. It is small, light weight, widely used in the long-term tide, the water level observations of oceans, lakes, and reservoirs. 

Technical indicators 

Instrument features 

Precision temperature accuracy ± 0.05 ℃; pressure accuracy of ± 0.2% (FS) 

Consumption, built-in battery can work 5 years 

Small size, 200mm (length) × 32mm (diameter) 

Light weight, air 190g, 41g water 

Instrument can be achieved without having to open the instrument parameter setting and data transmission 

Technical Parameters 

Pressure Sensor 

Range: 1.6,4bar 

Accuracy: ± 0.1% of range 

Resolution: 0.005% 

Temperature Sensor 

Range: -2 ℃ - 30 ℃ 

Accuracy: ± 0.05 ℃ 

Resolution: 0.0015 ℃