Split type ultrasonic level gauge transmitter, material level water level gauge, material level liquid level sensor4-20mARS485

  Introduction: The split type ultrasonic level gauge measures the time required for an ultrasonic pulse to be emitted and returned, and is used for measuring the liquid level and volume of tanks, pools, and reservoirs, as well as for flow measurement in open channels. Principle and wiring form selection of split type ultrasonic level gauge 1. Two wire system: The power supply (only DC24V) and signal output (D-20mA) of the two wire ultrasonic level gauge share the same circuit, using only two wires, which is a standard transmitter form. 2. Three wire system: The three wire ultrasonic level gauge is actually a four wire system, with separate power supply (only DC24V) and signal output (D-20mA) circuits, each using two wires. When their negative terminals are connected to the ground, three wires are usually used. Its advantage is that it has a high transmission powe...
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Introduction: The split type ultrasonic level gauge measures the time required for an ultrasonic pulse to be emitted and returned, and is used for measuring the liquid level and volume of tanks, pools, and reservoirs, as well as for flow measurement in open channels. Principle and wiring form selection of split type ultrasonic level gauge 1. Two wire system: The power supply (only DC24V) and signal output (D-20mA) of the two wire ultrasonic level gauge share the same circuit, using only two wires, which is a standard transmitter form. 2. Three wire system: The three wire ultrasonic level gauge is actually a four wire system, with separate power supply (only DC24V) and signal output (D-20mA) circuits, each using two wires. When their negative terminals are connected to the ground, three wires are usually used. Its advantage is that it has a high transmission power. 3. Four wire system: The power supply (DC24V or AC220V) and signal output (D-20mA) circuits are separated, using two wires. Its advantage is that it has a higher transmission power and provides high and low relay outputs, adding new functions. 4. Measurement range: Select the corresponding model of ultrasonic level gauge based on the actual range. If the liquid being tested fluctuates violently, please choose a model with a range one level larger. The effective range for measuring solid material level is 1/2 to 2/3 of the liquid level range. 5. Power supply form: DC24V power supply: The power supply current capacity provided to the two-wire series should not be less than 30mA. The power supply current capacity provided to the three wire series should not be less than 60mA. The power supply current capacity provided to the four wire series should not be less than 80mA. AC220V power supply: Only four wire series products can be selected, and the power supply current capacity should not be less than 50mA.

 

Principle and Product Features of Split Ultrasonic Level Gauge 1. The maximum range can reach 40m, and the solid material level measurement can reach 25m; 2. Minimum resolution 1mm; 3. LCD/LED large display screen; 4. Intelligent signal processing technology; 5. All plastic anti-corrosion shell: protection level IP67;   6. The patented transducer structure: There is no requirement for the length of the flange connection when installing the small range level gauge flange; 7. Simple button setting parameters: no need to wait for the container to empty or fill, no additional requirements; 8. Flexible installation methods: threaded (flange), fixed hole (bracket); 9. Probe can be extended: suitable for installation in outdoor closed containers in cold regions to prevent frosting; 10. Equipped with high and low position dual relays: the four wire system provides this function; 12. Jialiu and DC power supply options are available: four wire system and split machine host provide this function. working principle The split type ultrasonic level gauge sensor emits and receives ultrasonic waves under the control of a microprocessor, and calculates the distance s between the ultrasonic sensor and the measured object based on the propagation time t of the ultrasonic waves in air. Since the propagation speed V of the sound waves in air is constant, s can be calculated according to: s=Vt/2. Also, because the distance H between the ultrasonic sensor and the bottom of the container is constant, the measured liquid (object) level h=S-s. Finally, the liquid level difference obtained by subtracting the low liquid level value from the high liquid level value is processed and displayed on the converter.

Principle spectrum of split type ultrasonic level gauge: If the liquid being measured fluctuates violently, please choose a model one level higher. The effective range for measuring solid material level is 1/2 to 2/3 of the liquid level. explain: 1. The two-wire series does not have models with ranges of 12 meters or 40 meters. 2. The three wire series does not have models with a range of 10 meters or 40 meters. 3. The four wire series and split standard models do not have a 10 meter range. 4. The split type simplified model does not have 12 meter or 40 meter range models. 5. Four wire and split type DC24V power supply products can provide LED digital tube display, while all other products are LCD liquid crystal displays. Principle of split type ultrasonic level gauge and installation conditions for containers Sealed container: For ranges below 8m, the container should have flange ports of DN65 or above, and there is no requirement for the length of the connecting pipe under the flange. For measuring ranges of 10m and 12m, the container should have flange ports of DN80 or above, and the length of the connecting pipe under the flange should be less than 150mm. For a range of 15m, the container should have a flange with a diameter of DN150 or more, and the length of the connecting pipe under the flange should be less than 150mm. For measuring ranges of 20m, 30m, and 40m, the container should have flange ports with a diameter of DN200 or more, and the length of the connecting pipe under the flange should be less than 200mm. 2. Open container: For ranges below 8m, the container should have an installation port with a diameter of 65mm or more. For 10m and 12m ranges, the container should have an installation port with a diameter of 80mm or more, and the thickness of the installation port should be less than 150mm. For a range of 15m, the container should have an installation port with a diameter of 150mm or more, and the thickness of the installation port should be less than 150mm. For measuring ranges of 20m, 30m, and 40m, the container should have an installation port with a diameter of 200mm or more, and the thickness of the installation port should be less than 200mm. 3. Open pool: requires installation brackets.