Water Level Monitoring Sensors can be used to detect changes in water level. The Water Level Monitoring Sensor and other control equipment work together to form the Water Level Monitoring System. The Water Level Monitoring Sensor/System is used to monitor the discharge of industrial wastewater and urban sewage. This is the development direction of smart cities. Let’s talk about Water Level Monitoring Sensor/System for Sewage-Wastewater in detail below.

Water Level Monitoring Sensor

Level monitoring

By installing a drop-in liquid level monitoring box at the head of the sewage well. Real-time monitoring of liquid level data of sewage wells. The monitoring data is uploaded to the platform through wireless communication. The cloud platform recognizes anomalies based on data statistical algorithms.

When the liquid level exceeds the set alarm threshold, the system will send an over-limit alarm. Notify relevant personnel to start the pump to drain water. When the level detector has equipment failure. Record the fault alarm. Notify relevant personnel to inspect the equipment.

Surface Water Level Monitoring is suitable for the water department to monitor the surface water level. At the same time, it supports remote image monitoring. Provide accurate and timely on-site information to ensure proper water storage and safe flood season.
It is helpful for the Water Affairs Bureau to grasp the current situation of water resources in the region, the use of water resources, strengthen the recovery of water resources fees, and achieve the purpose of correct evaluation, reasonable dispatch, and effective control of water resources.

  1. Remote monitoring function. It can remotely monitor real-time data such as water level, rainfall, field equipment operating status, equipment voltage and so on.
  2. Remote control function. The opening/closing of the reservoir valve can be remotely controlled in the center according to the height of the on-site water level to maintain the normal water level.
  3. Image monitoring function. An external camera can be connected. Live photos can be taken. The photos can be uploaded to the monitoring center. The staff on duty can understand the situation on the spot without leaving home. Support regular and manual photos.
  4. Automatic alarm function. It will automatically alarm if the water level exceeds the limit, the rainfall exceeds the limit, the equipment fails, and the door is opened abnormally.
  5. Automatic statistics function. According to historical data, automatic statistics into daily reports, monthly reports, annual reports, etc.. Generate analysis charts according to customer needs.
  6. Data storage function. The monitoring center and the field terminal can store historical data bidirectionally. It can store not less than 10 years of historical data.
Surface Water Level Monitoring

Scope of application:

  1. River water level monitoring. Real-time monitoring of the water level of the river provides a basis for decision-making.
  2. Lake water level monitoring. The required information can be extracted by uploading real-time water level conditions.
  3. Water level monitoring of the reservoir. Real-time monitoring of the water level in the reservoir is convenient for timely water replenishment and does not affect production and life.
  4. The upstream and downstream water level monitoring of the reservoir. The water level changes of the upper and lower water levels can be reflected through the water level gauges of various manufacturers.
  5. Rainfall monitoring in the reservoir area. Rain gauge measurement is used as the basis for rainfall and rainfall intensity in the reservoir area.
  6. On-site picture monitoring of the reservoir. Industrial cameras upload on-site pictures of the reservoir area.
  7. Monitoring of the infiltration line of the dam of the reservoir. Observe the position of the infiltration line of the dam body by embedding a piezometer.
  8. Monitoring the seepage pressure of the dam foundation of the reservoir. The seepage pressure distribution of the dam foundation is reflected by the embedded piezometer.
  9. Reservoir dam displacement monitoring. Accurately understand the horizontal and vertical deformation of the dam surface.

River Water Level Monitoring System

The river water level monitoring system is suitable for the water management department to remotely monitor the water level, rainfall, and other real-time data of the river basin. At the same time, it supports remote image monitoring. It provides accurate and timely on-site information to ensure proper water storage and safety in the river basin.

The river water level monitoring system achieves real-time monitoring of water and rain conditions and realizes the information management of the river. It has played a major role in protecting people’s lives and property safety.

System Overview

The river water level monitoring system is an important method for real-time control of river water regime changes, scientific early warning of flood disasters, improvement of flood control command capabilities, and reduction of rain and flood disaster losses.

System functions

  • Real-time monitoring of river water level, can expand rainfall, water quality, flow rate monitoring.
  • Support remote camera or video real-time monitoring (depending on the communication method).
  • When the water level exceeds the limit, the sensor fails, and the battery voltage of the monitoring terminal is low, the alarm will be immediately alarmed.
  • Automatically generate water level process curve and data statistics report.
  • It can be linked with the drainage pump station to automatically control the start and stop of the drainage pump group according to the water level of the river.
  • Supports docking with other comprehensive monitoring application platforms through OPC, database and other forms.

System Features

  • Strong compatibility: Compatible with various types of water level gauges such as ultrasonic, radar, float, laser, bubble, and drop-in type.
  • Flexible form of power supply: According to site conditions, it can be flexibly selected to supply power to the equipment by means of city electricity, solar energy, batteries, etc.
  • Various communication methods: support GPRS, CDMA, NB-IOT, short message, Beidou satellite, 3G/4G, WIFI, ADSL/optical fiber and other communication methods.

Extended Reading: GWR Level Sensor for High Temperature & High Pressure

The water level control switch is a feedback liquid level position signal. It informs the center console of the duty room whether the water level has reached the specified water level. It can also control the startup or shutdown of related equipment (such as water pumps). The signal voltage is often a safety voltage of 12V or 24V.

Water Level Control Sensor Switch is widely used in industrial boilers, civil construction pools, water towers, water tanks. As well as open or closed storage tanks in petrochemical, paper, food, sewage treatment, and other industries. Level measurement of various liquids in underground tanks. The tested medium can be divided into various conductive and non-conductive liquids such as water, oil, acid, alkali, industrial sewage, and so on. It forms a set of advanced liquid level display and control equipment with the electric valve, which automatically opens and closes the electric valve.

Tank level sensor is a common sensor for measuring liquid level position. It converts the height of the position into an electrical signal for output. The liquid level sensor is a modular circuit. It has the advantages of acid resistance, moisture resistance, shock resistance, and corrosion resistance. The circuit contains a constant current feedback circuit and an internal protection circuit. The maximum output current can be made to not exceed 28mA. Therefore, the power supply can be reliably protected and the secondary meter is not damaged. In general, it is used in electrical appliances and equipment that require water level control.

Read more Tank Level Gauges & Indicators.

We can divide Water Level Sensors into two categories by measuring whether they are in contact with the water level.

One type is contact type. Including single flange static pressure/double flange differential pressure level transmitter, float type level transmitter, magnetic level transmitter, input type level transmitter, electric internal float level transmitter Sensors, electric float level transmitters, capacitive level transmitters, magnetostrictive level transmitters, service level transmitters, etc.

The second category is non-contact. Divided into the ultrasonic level transmitter, radar level transmitter, and so on.

Extended Reading: Chilled Water Flow Meter

Ultrasonic liquid level Sensor adopts an ultrasonic pulse-echo method to realize liquid level measurement. Specifically, the transducer (probe) of the ultrasonic liquid level Sensor sends out high-frequency ultrasonic pulses. When it encounters the surface of the liquid level to be measured, the sound wave is reflected back. Part of the reflected echo is received by the transducer (probe) and converted into an electrical signal. The user can know the water level almost in real-time based on the reflected signal.

When choosing a water level measuring instrument, it is recommended to measure the ultrasonic liquid level Sensor here. It adopts microprocessor program control technology and intelligent signal processing technology. The measurement is efficient and accurate.

The protection level of the whole machine is as high as IP66/IP67, which can effectively prevent dust from inhaling, and can be immersed in water for a short time. At the same time, the probe is made of high explosion-proof grade (Ex d IIC T6 Gb) and PVDF material. It is very suitable for applications in harsh and noisy outdoor environments with corrosive liquids, harsh working conditions, and strong interference.

In addition, the ultrasonic liquid level Sensor has a variety of ranges to choose from. The longest can be measured at 15 meters. Very suitable for long-distance detection and tank level detection.

In addition to the use of ultrasonic level Sensors for water level monitoring. Users can also use radar, depth water level sensors, and other technologies to monitor the water level. Instead, use an ultrasonic liquid level. It is a liquid-level measuring instrument with a low maintenance cost and wide application range at present. Users can accurately obtain all required data. And with high-cost performance, it is favored by the majority of users.

Featured Water Level Monitoring Sensors

Wastewater/sewage pipe network flow and liquid level online monitoring solution

The online monitoring system for the flow and liquid level of the drainage/sewage pipe network is an important part of the intelligent drainage construction in Anhui. Through this system, the management department can globally grasp the operating status of the drainage pipe network, effectively identify the silting pipe section, and discover the abnormality of the manhole cover in time. In order to quickly respond to flood prevention and protect residents’ travel safety.

On-site monitoring equipment composition:

  • Well monitoring RTU: battery-powered, IP68 waterproof RTU
  • Water level detection equipment: drop-in level gauge (ultrasonic level gauge and other level gauges can also be used)
  • Manhole cover status detection equipment: travel switch (limit switch)
Wastewater/sewage pipe network flow and liquid level online monitoring solution

System implementation instructions

1) The limit switch is installed under the manhole cover. When the manhole cover was closed, it just touched the contact of the travel switch. When the manhole cover is moved, the contact state of the limit switch changes. Such as from “open” to “closed”. And output this state change signal to the manhole monitoring RTU through the cable.

2) The probe of the throw-in water level gauge is installed at the bottom of the manhole and fixed firmly. Real-time detection of water level data in the manhole. And output the data to the manhole monitoring RTU through the cable.

3) Under normal circumstances, the well monitoring RTU regularly (time interval can be set) transmits the status and water level data of the well cover to the monitoring center through the GPRS/CDMA/4G/NB-IoT network. When the state of the manhole cover changes or the water level data exceeds the preset alarm value. The well-monitoring RTU reports alarm information to the monitoring center in real-time.

4) The center’s drainage pipe network monitoring system software dynamically displays the water level data and manhole cover status of each manhole. It provides query, statistics, and analysis functions, and prompts alarm information in various forms such as pop-up windows, prompt sounds, and short messages.

System functions

  • Monitor the water level of the wells at the important nodes of the pipeline network, and detect the siltation and blockage of the pipeline network in time.
  • Monitor the status of the manhole cover, and immediately alarm when the manhole cover is lost or displaced.
  • Provide timely warning information on the operation of the pipeline network to provide a decision-making basis for emergency flood prevention work.
  • Diagnose the bottleneck pipe section in the drainage pipe network, and provide a basis for the pipe network transformation.
  • Provide analytical data for evaluating the drainage capacity of low-lying and flood-prone areas.
  • Trace the historical status of the pipeline network operation to assist in accident analysis.

Water Level Sensor Working Principle

The function of the water level sensor is to detect the water level. The water level sensor is widely used in electrical appliances and industrial equipment that require water level control. The water level sensor can realize the function of water shortage protection.

Principle of water level sensor:
The water level sensor has a sensor. Transform the sensed water level signal into a current signal.

There are many types of water level sensors, so their specific measurement principles are different.
If you need to learn more. You can refer to:
Differential pressure type liquid level measuring instrument;
Float level measuring instrument;
Electric liquid level measuring instrument;
Ultrasonic liquid level measuring instrument;
Radar liquid level measuring instruments, etc.

Extended reading: Capacitive water level sensor

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If it is just an ordinary tank or well water level measurement. Then our first choice is the hydrostatic pressure submerged liquid level sensor. Also called hydrostatic level sensors.

Because of its lowest cost. Installation, use and maintenance are very simple.

Accurately measure the water level. In turn, the water level can be better controlled within the allowable range. It is of great significance to ensure safety and improve economic efficiency.
for example:
Many types of equipment in thermal power plants need to maintain a normal water level in order to operate safely and economically.
For example, boiler drum water level, deaerator water level, steam turbine condenser water level, high and low-pressure heater water level, etc.

Sino-Inst offers over 50 Water Level Monitoring sensors/Systems for Sewage-Wastewater. About 50% of these are Radar level meters, 40% is magnetic level sensor.

A wide variety of Tank Level Gauges & Indicators for Water Level Monitoring sensors/Systems for Sewage-Wastewater options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Water Level Monitoring Sensor/System for Sewage-Wastewater instrumentation, located in China.

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