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TUL ultrasonic level gauge / level difference gauge

Level measurement in the industrial sector, especially in the water treatment industry

● Water and sewage treatment

Pump room, water collection well, biochemical reaction tank, sedimentation tank, mud storage tank, etc.

? ● Electricity, mining

?? Mortar pond, coal slurry pond, water treatment


Classical ultrasonic echo analysis. The ultrasonic transducer sends out an ultrasonic pulse and is reflected back when it encounters the surface of the measured medium. The reflected echo is received by the same transducer and converted into an electrical signal. Ultrasonic pulses propagate at the speed of sound waves, and the time interval from the transmission of ultrasonic waves to the reception of echoes is proportional to the distance from the transducer to the surface of the measured medium. So by measuring and analyzing the time difference of the ultrasonic signal returned from the liquid surface, the distance from the sensor to the liquid surface can be calculated.

Because the transmitted ultrasonic pulse has a certain width, the reflected wave and the transmitted wave in a small area close to the transducer overlap, which cannot be identified and the distance value cannot be measured. This area is called the measurement dead zone. We adopt the technology of intelligent adjustment of the transmission pulse width, and automatically adjust the transmission pulse width according to the received signal strength of the reflected wave, so that the measurement dead zone can be adjusted, so that the instrument can work in a smaller dead zone.

● Rugged and stable sensors are suitable for harsh industrial occasions;
● Unique echo processing technology and advanced algorithms incorporating rich field experience can effectively overcome foam, gasp, and other on-site interference; ● The ultrasonic transducer uses imported piezoelectric ceramic materials, and acoustic matching technology improves emission efficiency;
● The built-in temperature sensor of the transducer realizes real-time automatic temperature compensation of measured values;
● Program-controlled automatic emission energy adjustment takes into account both long range and small blind areas;
● The blind area can also be set manually to shield the interference signals near the probe;
● High-brightness graphic LCD can display the measurement results with both numbers and graphics;
● Chinese menu, simple key operation;
● 4 ~ 20mA isolated current output, optional fieldbus interface;
● Control relay output, alarm relay output.

Measurement performance <br /> Range: 0 ~ 5m, 0 ~ 10m, 0 ~ 15m
Dead zone: 0.3m, 0.4m, 0.6m
Emission angle: 7 °
Resolution: 0.001m
Accuracy: 0.25%, 0.5%
Stability: Maintain 0.1-level accuracy within 12 months, and can remove the influence of sharp fluctuations in the water temperature compensation: automatic temperature compensation display: LCD liquid crystal display date, time, measured value on-site setting: completed by the transmitter button

Output <br /> Analog output: Isolated 4 ~ 20mA, maximum load 500Ω
Relay output: 4 control relay outputsRelay capacity: 2A, 250VAC
Digital interface: MODBUS RS232 / RS485, Profibus DP optional

Power supply <br /> AC power supply: 220VAC ± 10%, 50Hz
DC power supply: 24VDC ± 10%

Physical properties <br /> Transmitter size: 231 × 185 × 119mm
Sensor size: Φ63 × 130mm, Φ71 × 180mm
Material: Transmitter: PC Sensor: Polyester, epoxy Connection: M25 × 1.5 Externally threaded sensor cable: Shielded cable 10m. (Other lengths can be specified in the order)

Environmental performance <br /> Protection level: Transmitter: IP66 Sensor: IP68
Temperature: Transmitter: -20 ℃ ~ 60 ℃ Sensor: -40 ℃ ~ 80 ℃
Relative humidity: 0 ~ 100%
Pressure: up to 2Bar