HDS3051 differential pressure static level, also known as settlement monitoring static level, is a high-precision liquid level measuring instrument used to measure the relative settlement of various measuring points in foundations and buildings. The entire level consists of components such as a reservoir, a level, a connecting gas pipe, a liquid pipe, and a data acquisition instrument.

Mainly used for measuring uneven settlement of various measuring points in large buildings, high-rise buildings, dams, hydropower stations, nuclear power plants, water conservancy hub projects, railways, subways, high-speed railways, comprehensive pipe galleries, etc.

【 Working Principle 】

HDS3051 differential pressure typeA static level is a precision instrument based on the principle of connectivity, which measures the relative changes in the liquid level height of several interconnected storage tanks installed at the measured point and the liquid level height of the measuring base point (fixed point) tank, and infers the relative settlement change of each storage tank installation position.

【 Application Fields 】

• Monitoring of settlement of rail transit subgrade and subway support wall

• Detection of settlement of mountain and building on the upper part of the tunnel, highway subgrade and slope

• Bridge pier and foundation pit settlement detection The foundation of dams, water conservancy hubs, and high-rise buildings

• Settlement monitoring of comprehensive pipe gallery in nuclear power plants and large hydropower stations

Main technical parameters

• Range: 0-500-1000-20mH2O (customizable range)

• Output: default RS485 (MODBUS-RTU protocol), 4-20mA, etc

• Display resolution: 0.01mmHg

• Accuracy:±0.075%FS、±0.1%FS

• Power supply: 12VDC (7-30VDC, maximum 5VDC)

• Insulation resistance: ≥ 1000 M Ω/100VDC

• Compensation temperature: -20~60 ℃ (special temperature range specified when ordering, can be customized to compensate for -30 ℃ ultra-low temperature)

• Medium temperature: -40~85 ℃

• Environmental temperature: -40~85 ℃

• Storage temperature: -40~85 ℃

• Relative humidity: 0-95% RH

• Sealing grade: IP67/(customizable IP68)

• Overload capacity: 150% FS

• Response time: ≤ 10mS

• Stability: ≤± 0.03% FS/year

• Vibration impact: ≤± 0.15% FS/year (mechanical vibration frequency 20Hz~1000Hz)

• Electrical connection: Four core waterproof aviation connector

• Media connection: 10 * 6.5mm PU liquid tube and 8 * 5mm PU air tube

[Dimensional drawing (unit: mm)]