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Industry Information
Technical parameters of ultrasonic liquid level gauge, selection, maintenance and protection
2012-3-15 9:03:40

的维修及保护办法 Maintenance and protection methods of ultrasonic level gauge

1. Maintenance and protection method of liquid level gauge. 2. When cleaning, first open the screw cap of the water level gauge's iron pipe, carefully take out the level gauge, and then clean the chips, debris, and dirt around the equipment. The mechanical engineer must clean it. 3. The level gauge should be placed uniformly, and the pipelines and lines must be layered; smooth and superior, refueling or changing oil on time, oil from time to time, no dry motor scenes, normal oil pressure, bright oil standard, unblocked oil roads, and oil quality are suitable for the level gauge. The oil gun, oil cup, and linoleum are clean. You can also use trichloroethylene or alcohol to inject the pressure hole to immerse it for about 5 minutes at one-half of the height. Do not use any utensil to clean the pressure-inducing hole, so as not to damage the sensitive core pressure-sensitive diaphragm. 4. The height of the internal medium level of the clean level gauge. Do not use hard brushes or metal objects to prevent damage to the sensitive core and pressure interface threads. 5. After the cleaning is finished, gradually put the liquid level gauge back into the iron pipe. If you feel that the lower part of the iron pipe has been placed, return the screw cap device to the original position. After removing and cleaning the liquid level gauge from the new device, you must Refer to the water level gauge at the time when the sluice unified water level is compared again to correct the detection value of the secondary meter to ensure the accuracy of the sampling data. 6, daily maintenance and protection of the preparation site, generally have daily protection and weekly protection, also known as the daily protection and weekly protection of the advantages of the ultrasonic level gauge depth. The propagation speed of the ultrasonic wave is relatively constant at a certain temperature. If the speed is known, the distance from the ultrasonic probe to the liquid surface can be calculated as long as the transmission and reception time of the ultrasonic wave is calculated. The depth of the tank or the tank is constant. Calculate the distance from the liquid surface to the probe, and then calculate the distance from the liquid surface to the bottom of the tank or tank, which is the depth of the liquid. Its advantage is non-contact measurement, which is relatively hygienic and can detect highly corrosive media. The disadvantage is that the requirements for the generation and reception of ultrasonic waves are high on the environment. In the case of harsh environments, the ultrasonic level gauge is not very suitable.


The ultrasonic level gauge can complete the level monitoring independently, and can also be connected to various DCS systems through 4-20mA or RS485, providing real-time level data for industrial automation. The ultrasonic transducer is the visual nervous system of the ultrasonic level gauge. The technical indicators of the ultrasonic transducer determine the performance of the integrated ultrasonic level gauge. The main technical indicators for measuring ultrasonic transducers are: dead zone, direction angle, sensitivity, etc. The tailing phenomenon that occurs in all ultrasonic transducers when they are vibrating. As a result, there will be an area where the echo cannot be received at the proximal end of the transducer, which is called a blind zone. The traditional ultrasonic positioner has a large blind area, and the measurement near the blind area is still affected by the "tailing phenomenon", and the measurement accuracy is not high.

Ultrasonic Level Gauge Features:
1. Small transmitting power, weak energy, high sensitivity, and small directional angle;
2. The complete transducer series can accurately complete non-contact continuous measurement under different environments;
3. Small blind area, high precision, and accuracy can be guaranteed near the blind area;
4, integration, can accurately receive weak echo signals, to ensure the accuracy and reliability of the measurement;
5, safe and reliable, moisture-proof, corrosion-resistant, suitable for different occasions, not affected by weather and other factors;

技术参数及选型: Technical parameters and selection of ultrasonic level gauge :

Explosion-proof ultrasonic level gauge Model: 3000E
Measuring range: 0 ~ 10m
Dead zone: 0.25m ~ 0.6m
Measurement accuracy: ± 3mm or 3 ~ 5 ‰, whichever is greater Repeat accuracy: 1 ‰
Resolution: 1mm
Frequency: 40KHz / 24KHz
Direction angle: 4 ° / 6 ° (full angle)
Pressure: 4 atmospheres below display: comes with LCD display liquid level height output: 4 ~ 20mA, RS485 protocol
Ambient temperature: -20 ℃ ~ + 60 ℃
Explosion-proof grade: Ex d (ia) ⅡBT4

Acid and alkali resistant ultrasonic level gauge Model: 3000 (E) S
Measuring range: 0 ~ 15m
Dead zone: 0.25m ~ 0.6m
Measurement accuracy: ± 3mm or 3 ~ 5 ‰, whichever is greater Repeat accuracy: 1 ‰
Resolution: 1mm
Frequency: 40KHz / 24KHz
Direction angle: 4 ° / 6 ° (full angle)
Pressure: below 4 atmospheres Display: Built-in LCD display Liquid level height output: 4-20mA, RS485 protocol
Ambient temperature: -20 ℃ ~ + 60 ℃
Protection level: IP65

Ordinary non-explosion-proof ultrasonic level gauge
Model: 3000P
Measuring range: 0 ~ 15m
Dead zone: 0.25m ~ 0.6m
Measurement accuracy: ± 3mm or 3 ~ 5 ‰, whichever is greater Repeat accuracy: 1 ‰
Resolution: 1mm
Frequency: 40KHz / 24KHz
Direction angle: 4 ° / 6 ° (full angle)
Pressure: Below 4 atmospheres Display: Built-in LCD display Liquid level height output: 4-20mA, RS485 protocol Application occasions: Non-explosion-proof environment Power supply voltage: DC24V / AC220V
Ambient temperature: -20 ℃ ~ + 60 ℃
Protection level: IP65