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YEH-Z Intelligent Small Blind Spot Ultrasonic Liquid Level Gauge
YEH-Z Intelligent Small Blind Spot Ultrasonic Liquid Level Gauge
Product details
Sincerely thank you for choosing our companyUltrasonic level gaugeYeli is a professional factory that produces ultrasonic level gauges. For details on how much ultrasonic level gauges cost, please consult customer service. We offer discounts for larger quantities! This instrument contains multiple patented technologies, which are characterized by safety, cleanliness, high precision, long service life, stability and reliability, and easy installation and maintenance. It is suitable for various acids, alkalis, salts, high temperatures, corrosion prevention, etcDomain.
This instrument can be connected to display meters or various DCS systems through 4-20mA or RS485 (Modbus protocol or other customized protocol), providing real-time liquid level data for industrial automation operation.
This instrument can be connected to display meters or various DCS systems through 4-20mA or RS485 (Modbus protocol or other customized protocol), providing real-time liquid level data for industrial automation operation.
2.1Technical specifications of two-line ultrasonic level gauge
Measurement range: 5m, 10m, 15m, 25m (selected according to the actual measurement range)
Blind zone: 0.25m~0.6m
Distance measurement accuracy: 0.25% to 0.5% (standard conditions)
Distance measurement resolution: 1mm
Pressure: below 4 atmospheres
Instrument display: Equipped with LCD to display liquid level or spatial distance
Analog output: 4-20mA
Digital output: None
Power supply voltage: DC24V/1W, built-in lightning protection device
Environmental temperature: -20 ℃~+60 ℃. High temperature can be customized (temperature resistance up to 90 ℃ can be customized)
Protection level: IP65 or IP68
2.2 Technical specifications of four wire ultrasonic level gauge
Measurement range: 5m, 10m, 15m, 25m (selected according to the actual measurement range)
Blind zone: 0.25m~0.6m
Distance measurement accuracy: 0.25% to 0.5% (standard conditions)
Distance measurement resolution: 1mm
Pressure: below 4 atmospheres
Instrument display: Equipped with LCD to display liquid level or spatial distance
Analog output: 4-20mA
Digital output: RS485, Modbus protocol or custom protocol
Relay output: Two independent outputs
Power supply voltage: DC24V/AC220V, built-in lightning protection device
Environmental temperature: -20 ℃~+60 ℃. High temperature can be customized (temperature resistance up to 90 ℃ can be customized)
Protection level: IP65 or IP68
Example of the function of the four wire ultrasonic level gauge relay:
(1) When the liquid level is below 2 meters, close the relay and start the pump to inject water. When it is above 7 meters, disconnect the relay and stop the pump.
It can be implemented using a lower limit alarm relay, with a return difference dL set to 7-2=5 meters and L set to 2 meters. When the liquid level is less than 2 meters, the relay will close and the pump will start to inject water. When the liquid level exceeds 7 meters, the relay will disconnect and the pump will stop.
(2) At a liquid level of 5 meters, if it is higher than 4 meters, close the relay to open the pump for drainage. If it is lower than 1 meter, disconnect the relay to stop the pump.
It can be achieved using an upper limit relay. Set hysteresis dH=4-1=3 meters, AH=4 meters. This allows the relay to close and start the pump for drainage when the liquid level is greater than 4 meters, and stop the pump when it is less than 1 meter.
The above two examples are both examples of using hysteresis control to control two liquid level points when only one pump is used. For situations where multiple pumps are used, simple control values can be set.
Blind zone: 0.25m~0.6m
Distance measurement accuracy: 0.25% to 0.5% (standard conditions)
Distance measurement resolution: 1mm
Pressure: below 4 atmospheres
Instrument display: Equipped with LCD to display liquid level or spatial distance
Analog output: 4-20mA
Digital output: None
Power supply voltage: DC24V/1W, built-in lightning protection device
Environmental temperature: -20 ℃~+60 ℃. High temperature can be customized (temperature resistance up to 90 ℃ can be customized)
Protection level: IP65 or IP68
2.2 Technical specifications of four wire ultrasonic level gauge
Measurement range: 5m, 10m, 15m, 25m (selected according to the actual measurement range)
Blind zone: 0.25m~0.6m
Distance measurement accuracy: 0.25% to 0.5% (standard conditions)
Distance measurement resolution: 1mm
Pressure: below 4 atmospheres
Instrument display: Equipped with LCD to display liquid level or spatial distance
Analog output: 4-20mA
Digital output: RS485, Modbus protocol or custom protocol
Relay output: Two independent outputs
Power supply voltage: DC24V/AC220V, built-in lightning protection device
Environmental temperature: -20 ℃~+60 ℃. High temperature can be customized (temperature resistance up to 90 ℃ can be customized)
Protection level: IP65 or IP68
Example of the function of the four wire ultrasonic level gauge relay:
(1) When the liquid level is below 2 meters, close the relay and start the pump to inject water. When it is above 7 meters, disconnect the relay and stop the pump.
It can be implemented using a lower limit alarm relay, with a return difference dL set to 7-2=5 meters and L set to 2 meters. When the liquid level is less than 2 meters, the relay will close and the pump will start to inject water. When the liquid level exceeds 7 meters, the relay will disconnect and the pump will stop.
(2) At a liquid level of 5 meters, if it is higher than 4 meters, close the relay to open the pump for drainage. If it is lower than 1 meter, disconnect the relay to stop the pump.
It can be achieved using an upper limit relay. Set hysteresis dH=4-1=3 meters, AH=4 meters. This allows the relay to close and start the pump for drainage when the liquid level is greater than 4 meters, and stop the pump when it is less than 1 meter.
The above two examples are both examples of using hysteresis control to control two liquid level points when only one pump is used. For situations where multiple pumps are used, simple control values can be set.
2. Overall dimensions of the instrument
3. Installation method
In open environments, bracket installation is generally used, and the instrument is fixed with its own locking nut. Cut a circular hole slightly larger than the probe diameter (60mm) in the installation position of the pool or tank, place the ultrasonic level gauge probe in, and then tighten the locking nut from bottom to top. Installation must ensure that the probe surface is perpendicular to the measured liquid level, YEH-ZUltrasonic level gaugeThere are three installation methods to choose from.
3.1 Definition of Installation Parameters
After the probe of the instrument reaches the liquid level, it reflects back to the probe. After the probe receives it, the time from sending the wave to receiving it is calculated to obtain the measurement distance L. The current liquid level H is obtained by subtracting the measurement distance L from the instrument installation height TH. The instrument range refers to the distance that the instrument can measure, and the installation height TH should be less than the range. Instrument blind zone refers to the area where the instrument cannot measure near the probe. The distance between the top liquid level and the probe should be greater than the blind zone. For example, if the blind zone is 0.3m, the distance between the liquid level and the probe must be greater than 0.3m. The transmission of waves by the probe is a diffusion process with directional angles. Attention should be paid during installation, otherwise it may hit the protrusions on the pool wall or the edges of the channel, affecting the stability of the data.
3.2 Installation guidance
When installing the probe, the distance from the probe face to the top liquid level should exceed the blind zone, and the probe end face should extend into the tank. (Except for adding extension tubes) Pay attention to the installation angle, and the probe should be perpendicular to the liquid level. Avoid the feeding sector. Two ultrasonic instruments cannot be installed simultaneously in one tank. The probe cannot be installed at the center of the tank.
Extension pipe installation
If the measured high position is within the blind spot range,Ultrasonic level gaugeThe probe must be installed on the extension tube. There are limitations on the diameter and length of short extension pipes. See the figure on the right for details. Avoid condensation and bonding inside the extension tube. The inner surface of the extension pipe should be as smooth as possible (without welding or seams), and the opening of the extension pipe should be smooth. A 45 degree angle is ideal.
3.2 Installation guidance
When installing the probe, the distance from the probe face to the top liquid level should exceed the blind zone, and the probe end face should extend into the tank. (Except for adding extension tubes) Pay attention to the installation angle, and the probe should be perpendicular to the liquid level. Avoid the feeding sector. Two ultrasonic instruments cannot be installed simultaneously in one tank. The probe cannot be installed at the center of the tank.
Extension pipe installation
If the measured high position is within the blind spot range,Ultrasonic level gaugeThe probe must be installed on the extension tube. There are limitations on the diameter and length of short extension pipes. See the figure on the right for details. Avoid condensation and bonding inside the extension tube. The inner surface of the extension pipe should be as smooth as possible (without welding or seams), and the opening of the extension pipe should be smooth. A 45 degree angle is ideal.
Installation of waveguide tube
If there is strong echo interference on site (such as in narrow shafts, unavoidable steps, etc.), it is recommended to use ultrasonic waveguide pipes larger than 100mm (such as PE or PVC sewage pipes). The inner surface of the waveguide should be as smooth as possible (without welding or seams). There are ventilation holes at the top. A 45 degree angle at the mouth of the pipe is ideal. Ensure that the waveguide is not dirty, and if necessary, regularly clean the waveguide.
3.3. Physical Image Display:
3.3. Physical Image Display:
3.4. Installation precautions:
1) It is recommended to install sunshades for outdoor installation of instruments to extend their service life.
2) Wire and cable protection pipes should be sealed to prevent water accumulation.
3) Although the instrument itself has lightning protection devices, it is recommended to install dedicated lightning protection devices at the inlet and outlet of the instrument when it is used in areas with frequent lightning strikes.
4) When the instrument is used in extremely hot and cold places, where the ambient temperature may exceed the working requirements of the instrument, it is recommended to install high and low temperature devices around the level gauge.
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