Taidacent Non-Contact Liquid Level Sensor Contactless Water Level Sensor Externally Attached Liquid Induction Level Switch Water Level Switch (High and Low Level) High and Low Level
Taidacent Non-Contact Liquid Level Sensor Contactless Water Level Sensor Externally Attached Liquid Induction Level Switch Water Level Switch (High and Low Level)
Install diagram Clearance requirements Requirements for the clearance between the contact surface of the sensor (or probe) and the outer wall of the container The contact surface of the sensor (or probe) and the outer wall of the container should be tightly pasted with AB or other solid-resistant glue. If there are special requirements, the gap should be less than 0.5mm, preferably no gap, otherwise it may affect the measurement accuracy The following is the installation method of XKC-Y25 series products, the installation method of other models is the same. (1) Requirements and installation methods of the tested container The tested containers are divided into 3 categories according to their materials:The first category: insulating material container Containers made of non-metallic materials with flat surface, uniform thickness, compact materials, and good insulation properties; such as glass, plastic, non-absorbent ceramics, acrylic, rubber and other aterials or their composite materials. Installation method: 1. If the container wall where the measuring probe is installed is of multi-layer material, the layers should be in close contact with each other without bubbles or gas interlayers. The inner and outer surfaces of the container wall should be flat. 2. Wall thickness: 0-20mm 3. Tank type: spherical tank, horizontal tank, vertical tank, etc. 4. The installation method of this kind of material container is shown in Figure 1;The probe can be pasted and fixed with glue or fixed on the outer wall of the container with a non-metal bracket. Try to avoid metal and other parts where the probe is installed, so as not to affect the detection. The location where the probe is installed should avoid the liquid inlet and the flow path of the liquid. There should be no silt or other debris inside the container facing the low-level probe, so as not to affect the detection; Metal conductive material container The second category: metal conductive material container Containers made of metal or other conductive materials; such as stainless steel, copper, aluminum alloy or materials with electroplated metal layers on the surface. Because capacitive sensors are sensitive to all conductive objects, this type of container cannot be directly attached to the outer wall of the container; therefore, for containers of this type of material, holes need to be made on the side of the container. The installation method is as follows. Installation method 1. Prepare two rubber plugs and the necessary tools for opening threaded holes; 2. Two threaded holes are opened in the high position and the low position respectively, and the hole diameter matches the size of the rubber plug; 3. Put a rubber plug on the threaded hole and tighten it to check for water leakage, and add glue to seal if necessary; 4. Paste the sensor on the rubber plug with glue and fix it with the bracket. After the glue has solidified, remove the bracket. The installation of the metal container is shown in Figure 2. The third category: non-metallic materials that absorb water Containers made of ceramics, tiles, bricks, tiles, cement, wood boards and other materials are insulators or weakly conductive. This kind of container may not be detected when it is close to the liquid level sensor when it is dry and without water, but when the container is filled with water, the container wall will absorb water, causing the container wall to become a conductor; even if the container is empty When the sensor is close to the container wall, the signal will also be detected. If the sensor is to be used on a container of this type of material, the installation method should be in accordance with the installation method of a metal container. For the installation method, see "Class 2: Metal Conductive Material Container" and Figure 2; or use an external pipe to install. External pipes are divided into external non- metallic pipes and external metal pipes 7 / 14 The installation method of external non-metallic pipes is shown in Figure 3-1 and Figure 3-2. The installation method of external metal pipes is shown in Figure 4-1 and Figure 4-2.. Product Features 1. The non-contact liquid level sensor is suitable for the outer wall of non-metallic containers without direct contact with the liquid. It will not be corroded by strong acids and alkalis and other corrosive liquids, and will not be affected by scale or other debris. It can support high and low level output, NPN, PNP signal output (please explain with the manufacturer when selecting). 2. The detection is accurate and stable, and the boiling water level can be detected. 3. Pure electronic circuit structure, non-mechanical working mode, stable performance and durability. 4. High stability, high sensitivity, strong anti-interference ability, free from external electromagnetic interference, special processing for power frequency interference and common mode interference, to be compatible with all 5-24V power adapters on the market. 5. Strong compatibility, penetrating various non-metallic containers, such as plastic, glass, ceramic and other containers, the sensing distance (container wall thickness) can reach 20mm; liquid, powder, and particulate matter can be detected. 6. Open collector output mode, wide voltage range (5-24V), suitable for connecting various circuits and product applications. Working principle The intelligent non-contact liquid level sensor uses the inductive capacitance of water to detect whether there is liquid. When there is no liquid close to the sensor, the sensor has a certain static capacitance to the ground due to the distributed capacitance on the sensor. When the liquid level slowly rises and approaches the sensor, the parasitic capacitance of the liquid will be coupled to this static capacitance, making the capacitance value of the sensor larger, and the changed capacitance signal is then input to the control IC for signal conversion. The capacitance is converted into a change of a certain electrical signal, and then a certain algorithm is used to detect and judge the degree of this change. When the change exceeds a certain threshold, it is considered that the liquid level has reached the sensing point.
- The intelligent non-contact liquid level sensor uses advanced signal processing technology and high-speed signal processing chip to break through the influence of the wall thickness of the container and realize the true non-contact detection of the liquid level in the closed container.
- The liquid level sensor has intelligent liquid level reference adjustment and liquid level memory function, liquid level status display mode, which can realize multi-point series connection; can support high and low level output, NPN, PNP signal output and RS485 communication interface output ;Open collector output mode, wide voltage range (5~24V), suitable for connecting various circuits and product applications(Please Choose the appropriate model for your usage).
- High stability, high sensitivity, strong interference capability, free from external electromagnetic interference, special treatment for power frequency interference and common mode interference, to be compatible with all 5~24V power adapters on the market.
- Strong compatibility, through a variety of non-metallic containers, such as plastic, glass, ceramics and other containers, the sensing distance can reach 20mm; liquid, powder, particles can be detected.