Settlement monitoring static level equipment products

Description :

　　Application of Shaanxi Hengrui HR8066 Static Level Automatic Monitoring System in Engineering Monitoring

　　Author: Chen Wei

　　Source: Technology News, Issue 20, 2014

　　Abstract: For most engineering projects, vertical displacement is a crucial monitoring item during the construction process. Due to the fact that abnormal vertical displacement is often a precursor to engineering accidents, the vertical settlement measurement of certain important building facilities must have high-precision and real-time characteristics. Due to its superior characteristics, automated monitoring systems will inevitably be introduced into engineering monitoring work and become an effective means of engineering monitoring. This article introduces the measurement principle of the Shaanxi Hengrui HR8066 static level automatic monitoring system. Through application examples in engineering monitoring, it fully demonstrates the superiority of the Shaanxi Hengrui HR8066 static level automatic monitoring system and summarizes its application experience in engineering.

　　Keywords: Shaanxi Hengrui HR8066 static level automatic monitoring real-time system

　　Currently, the traditional method of manually collecting data is widely used for engineering monitoring projects. However, it not only has a small monitoring range, a large workload, and low efficiency, but also cannot achieve real-time and online monitoring. Therefore, it cannot detect problems and eliminate hidden dangers in a timely manner. The static leveling automation monitoring system, as a precise leveling measurement method, has the characteristics of high accuracy and good automation performance, which can fully compensate for the loopholes of traditional methods. At the same time, it can be better applied to certain special environments where manual operation cannot be carried out for a long time. It can achieve real-time and online monitoring, enabling timely detection of problems and elimination of hidden dangers during the progress of the project.

　　1. Measurement principle of Shaanxi Hengrui HR8066 static level automatic monitoring system. During the operation of the Shaanxi Hengrui HR8066 static level system, a series of sensor containers are connected by liquid pipes, and a certain amount of liquid is injected to ensure that the liquid in all containers can flow freely. Using the principle of connected liquid, the liquid level of multiple storage tanks connected by connecting pipes is always at the same level, that is, maintaining the same height. However, the depth of liquid in each container is not the same, which reflects the different heights of reference points where each container is located. When the liquid level of the container changes, it is sensed by the sensor. By measuring the liquid level height of the different storage tanks, the relative differential settlement of each Shaanxi Hengrui HR8066 static level can be calculated.

　　In a multi-point system, the vertical displacement of all sensors is relative to any point (reference point or benchmark), and the vertical displacement of that point should be relatively stable or can be determined by other manual observation methods. The elevation of the reference point should be corrected throughout the observation process to calculate the settlement changes of each measuring point in the Shaanxi Hengrui HR8066 static level system.

　　The calculation formula for the relative settlement of the jth observation point in the Shaanxi Hengrui HR8066 static level system relative to the reference point i is as follows: relative settlement of the measurement point=change in container water level at the measurement point - change in container water level at the reference point

　　The HR8066/67 high-precision static level is suitable for monitoring vertical displacement or settlement deformation with high requirements, and can monitor liquid level changes up to 0.01mm. The instrument consists of a series of containers containing liquid level sensors, which are connected by liquid filled connecting pipes between multiple containers. The reference container is located at a stable reference point, and any elevation change between the container and the reference container will cause a corresponding change in the liquid level inside the container. The elevation change of the measuring point can be obtained by measuring the liquid level change.

　　The HR8066/67 high-precision static level adopts pressure sensitive components of global quality. The static level product adopts a multi-point full range temperature compensation process of -20-60 ℃, which has the advantages of high measurement accuracy, no drift, strong reliability, and easy installation. The sealed shell has good moisture resistance and can work continuously for a long time in a relative humidity environment.

　　2. Technical parameters of static level

　　①. Main performance indicators

　　Standard range: 1000mm or other

　　Accuracy: ＜ ± 0.3mm

　　Resolution: 0.01mm

　　Annual stability: ＜ ± 0.5mm

　　Overload capacity: 200% F? S

　　②. temperature characteristic

　　Working temperature range: -20~85 ℃

　　Temperature compensation range: -20-60 ℃

　　Temperature sensor:

　　Temperature measurement range -40~150 ℃

　　Temperature measurement accuracy ± 0.2 ℃

　　③. Electrical Characteristics

　　Electrical Connection: Waterproof Four core Plug in

　　Supply voltage: 5-24VDC (HR8066)

　　12～24VDC（HR8067）

　　Output signal: MODBUS-RUT (HR8066)

　　4～20mA（HR8067）

　　Power protection: anti reverse connection, overvoltage protection

　　Communication interface: RS485, electrostatic protection

　　④. structural characteristics

　　Shell material: Aluminum alloy

　　Pipeline connector: stainless steel quick connector or stainless steel threaded locking connector

　　⑤. environmental characteristics

　　Protection level: IP67

　　Installation method: The exhaust valve is fixed vertically with the exhaust valve facing upwards

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