Accurate Water Level Gauge Perfect for Various Applications and Scenarios

What is a water level gauge? Application scenario and installation of water level gauge

What is a water level gauge?
A water level gauge is an instrument used to automatically measure and record the water level of rivers, lakes, reservoirs, irrigation canals and other water bodies. It is also called a "liquid level gauge" or "liquid surface gauge". Its principle is to convert the change of water level into a measurable physical quantity through various sensors, thereby realizing the monitoring and recording of the water level. The following are several common types of water level gauges and their principles:
Radar water level gauge: It emits a microwave signal. When the signal encounters the water surface, a part of the signal will be reflected back. After the receiver receives the reflected signal, it calculates the distance between the water surface and the radar water level gauge according to the round-trip time of the signal, thus determining the height of the water level.
Ultrasonic water level gauge: It uses ultrasonic pulses to measure the distance from the water surface to the device and then calculates the water level. It does not contact the water surface and is less affected by water quality, being suitable for various environments.
Application scenarios of water level gauges:
Water conservancy projects: Used for water level monitoring of reservoirs, dams, rivers, lakes, irrigation areas, etc., helping water conservancy departments to reasonably arrange the scheduling and utilization of water resources and ensuring the safe operation of water conservancy projects, such as the water storage and discharge scheduling of reservoirs, and the flood control and irrigation work of rivers.
Industrial production: In industries such as chemical, electric power, food and beverage, it is used for liquid level monitoring and control of various reactors, storage tanks, boilers and other containers, ensuring the safety and stability of the production process and preventing production accidents and product quality problems caused by abnormal liquid levels.
Environmental monitoring: Monitoring the water level changes of groundwater, wetlands, oceans, etc., providing data support for environmental research and protection, such as understanding the dynamic situation of groundwater, the impact of water level changes in wetland ecosystems on vegetation and animals, and the problem of sea level rise.
Shipping and waterway management: Providing data for waterway depth measurement and lock water level control, ensuring the navigation safety and shipping efficiency of ships and preventing accidents such as ships running aground.
Municipal engineering: Used for water level monitoring of urban water supply and drainage systems, such as the water level control of water supply reservoirs, water towers, clear water ponds, sewage pumping stations, rainwater pumping stations, etc., ensuring the normal operation of urban water supply and drainage and preventing urban waterlogging.
Installation of water level gauges:
The following are the general installation steps and precautions for several common water level gauges:
Radar water level gauge:
Installation position selection: Select an open and unobstructed position, avoid having obstacles such as bridges, trees, buildings, etc. on the propagation path of the radar beam; for rivers, reservoirs, etc., it should be installed at a stable position on the shore, and the range of water level changes should be considered to ensure that it can still measure effectively when the water level is at its lowest; when installing in a manhole, pay attention to the size of the space and the structure of the wellhead to ensure that the device can be installed normally and the signal transmission is not affected.
Installation height determination: Determine the installation height of the radar water level gauge according to the measurement requirements and the actual situation on the spot. Generally, it is required that the antenna has a certain distance from the water surface to avoid the influence of water surface fluctuations on the measurement, but it should not be too high to avoid affecting the measurement accuracy.
Installation method: The radar water level gauge usually adopts bracket installation or wall-mounted installation. When installing with a bracket, ensure that the bracket is firm and stable and can bear the weight of the device and the influence of the external environment; when installing wall-mounted, select a suitable wall to ensure that the wall can bear the weight of the device and fix it according to the installation instructions.
Cable laying: When laying cables, avoid the cables being squeezed, stretched or worn by external forces, and at the same time pay attention to the waterproof and grounding of the cables to prevent the cables from getting wet and causing damage to the device or safety hazards.
Device debugging: After the installation is completed, the radar water level gauge needs to be debugged, including setting measurement parameters, calibrating the zero point and range, checking the signal strength and stability, etc., to ensure that the device can work normally and measure the water level accurately.
Ultrasonic water level gauge:
Installation position: Select a place where the water surface is relatively calm, without obvious waves and water flow interference, and at the same time avoid installing near the water inlet, water outlet or a place where a large number of bubbles are produced, so as not affect the propagation and reflection of ultrasonic waves; the installation height should be determined according to the measurement range and the on-site conditions, generally requiring that the transducer has a certain distance from the water surface, but also ensuring that the reflected signal can still be received when the water level is at its lowest.
Installation angle: The transducer of the ultrasonic water level gauge should be installed perpendicular to the water surface to ensure that the ultrasonic waves can be emitted and received vertically, improving the measurement accuracy; if the installation position has a certain inclination, the measurement results need to be corrected accordingly.
Fixed method: The ultrasonic water level gauge can be installed in the selected position by means of bracket fixation or flange connection, etc., ensuring that the installation is firm and preventing the device from shaking or displacing during the operation process.
Waterproof treatment: Waterproof treatment should be carried out on the interfaces and cable connections of the device to prevent moisture from entering the device and causing damage; for installation positions that are long-term in a humid environment or may be flooded by water, additional waterproof measures such as using waterproof covers or sealants need to be taken.
Calibration and debugging: After the installation is completed, the ultrasonic water level gauge needs to be calibrated and debugged, including setting measurement parameters, adjusting the gain and blind area, etc., to adapt to different measurement environments and requirements; at the same time, through actual measurement and comparison, verify the measurement accuracy and stability of the device.

Ultrasonic water level meter series

water level sensor selection table
Product model	picture	Performance parameter
KUS3000 M18		Measuring range: 1m Output: 4~20mA/NPN/PNP/RS485 Protection class: IP65 Supply voltage: 13-30V Features: Material support customization Material: nickel plated copper Temperature: -25~70℃ Accuracy: 0.5%~1%
KUS3000 M30-Type1		Measuring range: 2m Output: 4~20mA/NPN/PNP/RS485 Protection class: IP65 Supply voltage: 13-30V Features: Material support customization Material: nickel plated copper Temperature: -25~70℃ Accuracy: 0.5%~1%
KUS3000 M30-Type2		Measuring range: 4m Output: 4~20mA/NPN/PNP/RS485 Protection class: IP65 Supply voltage: 13-30V Features: Material support customization Material: nickel plated copper Temperature: -25~70℃ Accuracy: 0.5%~1%
KUS3000 M30-Type3		Range: 6m/12m Output: 4~20mA/NPN/PNP/RS485 Protection class: IP65 Supply voltage: 13-30V Features: Material support customization Material: nickel plated copper Temperature: -25~70℃ Accuracy: 0.5%~1%
KUS550(Hot sale)		Measuring range: 0.8m~4m Output: 4~20mA/NPN/PNP/RS485/0-3V,0-5V Protection level: IP68 Supply voltage: 3.3-30 V Characteristics: Filling glue acid and alkali resistance Material: PVDF Temperature: -40~85℃ Accuracy: 0.5%~1%
KUS600(High cost performance model)		Range: 5m Output: 4~20mA/NPN/PNP/RS485/0-3V,0-5V Protection level: IP68 Power supply voltage: 3.3-24 V Characteristics: Filling glue acid and alkali resistance Material: PVDF Temperature: -40~85℃ Accuracy: 0.5%~1%
KUS630(Large range)		Measuring range: 6m~30m Output: 4~20mA/NPN/PNP/RS485/0-3V,0-5V Protection level: IP68 Supply voltage: 3.3-24V Characteristics: Filling glue acid and alkali resistance Material: PTFE/PVC Temperature: -40~85℃ Accuracy: 0.5%~1%
KUS640 (with display)		Range: 30m (can be customized according to different ranges) Output: 4~20mA/NPN/PNP/RS485/0-3V, 0-5V Protection class: Display instrument IP65, probe IP68 Supply voltage: 3.3-30 V Features: The display can be rotated Material: Head shell: metal aluminum, probe material: PVDF/PTFE/PVC Temperature: -40~85℃
KUS650 (Hot wireless model)		Range: 30m (can be customized according to different ranges) Output: 4G/Lora/GPRS/NB Protection class: Display instrument IP65, probe IP68 Supply voltage: 3.6V Features: Wireless Material: Head shell: metal aluminum, probe material: PVDF/PTFE/PVC Temperature: -40~85℃ Accuracy: 0.5%~1%

Radar water level meter series

Product model	picture	Performance parameter
KLD801		Measuring medium: liquid non-corrosive Measuring range: 0.05m ~ 10/20/30/60/100m Process connection: G1½A / 1½NPT thread/flange ≥DN40 Process temperature: -40 ~ 80℃ Process pressure: -0.1 ~ 0.3MPa Antenna size: 32mm lens antenna Antenna material: PTFE Precision: ±2mm Protection level: IP67 Center frequency: 80GHz Power source: two-wire /DC24V Four-wire /DC12~24V Four-wire system /AC220V Shell: Aluminum/plastic/stainless steel Signal output: two-wire /4... 20mA/HART protocol Four-wire system: 4... 20mA/ RS485 Modbus
KLD802		Measuring medium: non-corrosive liquid, slightly corrosive liquid Measuring range: 0.1m~10/20/30/60/100m Process connection: Flange ≥DN80 Process temperature: -40 ~ 110℃ Process pressure: -0.1 ~ 1.6MPa Antenna size: 32mm lens antenna Antenna material: PTFE Precision: ±2mm (measuring range below 35m) ±5mm (measuring range 35m-100m) Protection level: IP67 Center frequency: 80GHz Power source: two-wire /DC24V Four-wire /DC12~24V Four-wire system /AC220V Outer shell: Aluminum/stainless steel Signal output: two-wire /4... 20mA/HART protocol Four-wire four... 20mA/ RS485 Modbus
KLD803		Measuring medium: strong corrosive liquid, steam, foam Measuring range: 0.1m ~ 10/20/30/60/100m Process connection: Flange ≥DN50 Process temperature: -40 ~ 130℃ Process pressure: -0.1 ~ 2.5MPa Antenna size: 34mm lens antenna (depending on flange size) Antenna material: PTFE Precision: ±2mm (measuring range below 35m) ±5mm (measuring range 35m-100m) Protection level: IP67 Center frequency: 80GHz Power source: two-wire /DC24V Four-wire /DC12~24V Four-wire system /AC220V Outer shell: Aluminum/stainless steel Signal output: two-wire /4... 20mA/HART protocol Four-wire four... 20mA/ RS485 Modbus
KLD804		Measuring medium: strong corrosive liquid, steam, foam Measuring range: 0.1m~10/20/30/60/100m Process connection: Flange ≥DN50 Process temperature: -40 ~ 130℃ Process pressure: -0.1 ~ 1.0MPa Antenna size: 76mm lens antenna Antenna material: PTFE Precision: ±2mm Protection level: IP67 Center frequency: 80GHz Power source: two-wire /DC24V Four-wire /DC12~24V Four-wire system /AC220V Shell: Aluminum/plastic/stainless steel Signal output: two-wire /4... 20mA/HART protocol Four-wire four... 20mA/ RS485 Modbus
KLD805		Measuring medium: strong corrosive liquid, steam, foam, high temperature and high pressure Measuring range: 0.1m~10/20/30/60/100m Process connection: Flange ≥DN80 Process temperature: -40 ~ 200℃ Process pressure: -0.1 ~ 2.5MPa Antenna size: 76mm lens antenna (customized according to French size) Antenna material: PTFE/ integral filling Precision: ±2mm Protection level: IP67 Center frequency: 80GHz Power source: two-wire /DC24V Four-wire /DC12~24V four-wire /AC220V Shell: Aluminum/plastic/stainless steel Signal output: two-wire /4... 20mA/HART protocol Four-wire four... 20mA/ RS485 Modbus
KLD806		Measurement media: solids, storage containers, process containers or strong dust situations Measuring range: 0.3m~10/20/30/60/100m Process connection: Flange ≥DN100 Process temperature: -40 ~ 110℃ Process pressure: -0.1 ~ 0.3MPa Antenna size: 76mm lens antenna + universal purge (or without purging) Antenna material: PTFE Precision: ±5mm Protection level: IP67 Center frequency: 80GHz Power source: two-wire /DC24V Four-wire /DC12~24V four-wire /AC220V Shell: Aluminum/plastic/stainless steel Signal output: two-wire /4... 20mA/HART protocol Four-wire four... 20mA/ RS485 Modbus
KWL801		Measuring medium: water Measuring range: 0.1m~65m Mounting method: bracket or thread Power supply: 9~36VDC Output: RS485 Antenna size: 42mm lens antenna Antenna material: plastic Case material: plastic Accuracy:±2mm

Capacitance water level gauge

Product model	picture	Performance parameter
KSLV605		Detection range: 0.1~3m Precision: 0.5%~1% Temperature resistance: -50~250℃ Ambient temperature: -40~85℃ Storage temperature: -55℃~+125℃ Pressure range: -0.1MPa~32MPa Output signal: 4~20mA /RS485 communication Power supply voltage: 5~36V DC Liquid level gauge material: 304/316 stainless steel, 1Gr18Ni19Ti or PTFE Explosion-proof class: ExibIICT6 Protection level: IP67
KSLV605(with display)		Detection range: 0.1~3m Precision: 0.5%~1% Temperature resistance: -50~250℃ Ambient temperature: -40~85℃ Storage temperature: -55℃~+125℃ Pressure range: -0.1MPa~32MPa Output signal: 4~20mA /RS485 communication Power supply voltage: 5~36V DC Liquid level gauge material: 304/316 stainless steel, 1Gr18Ni19Ti or PTFE Explosion-proof class: ExibIICT6 Protection level: IP67
KSLV605(Wireless)		Detection range: 0.1~3m Precision: 0.5%~1% Temperature resistance: -50~250℃ Ambient temperature: -40~85℃ Storage temperature: -55℃~+125℃ Pressure range: -0.1MPa~32MPa Output signal: Wireless output type liquid level meter communication distance is less than 200 meters Power supply voltage: 3.3-36V (battery powered optional) Liquid level gauge material: 304/316 stainless steel, 1Gr18Ni19Ti or PTFE Explosion-proof class: ExibIICT6 Protection level: IP67

Company Information

Xi'an Kacise Optronics Co.,Ltd.