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Ultrasonic Level Sensor
The principle of ultrasonic level meter is that the ultrasonic pulse is sent by the transducer (probe). When the surface of the tested medium is reflected back, some reflected echoes are received by the same transducer and converted into electrical signals.
Product Details
Measuring Principle
The principle of ultrasonic level meter is that the ultrasonic pulse is sent by the transducer (probe). When the surface of the tested medium is reflected back, some reflected echoes are received by the same transducer and converted into electrical signals.
Ultrasonic pulses travel at acoustic speed, and the time interval from the launch to the reception of the ultrasonic pulses is proportional to the distance from the transducer to the surface of the medium being measured. The relation between the distance value S and the sound velocity C and the transmission time T can be expressed in terms of formulas:
S=C×T/2
Since the launch of the ultrasonic pulse with a certain width, the distance of reflection wave transducer in small region and emission wave overlap, not recognized, can not measure the distance value, this area is known as the measuring blind area, relevant work frequency and size of ultrasonic liquid level meter blind.
The base level of the measurement is the lower edge of the probe.
A.Blind area B.range C.Full charge D.Zero point
Characteristic
Advanced microprocessor is adopted
Unique echo processing technology
False echo storage function
Built in temperature compensation
Small beam
Simple debugging and calibration
Instrument introduction
| ABDT-CS21-5m | Application: Liquid level measurement, solid particle measurement Measuring range: standard probe: corrosion sealed probe： Liquid (0.3 ~5) m liquid (0.3~4) m Solid (0.3~2)m Solid (0.3~1.5)m Process connections: M66 x 2 or flange Transducer shell material: PA66+GF30 or PVDF Process temperature: (-40~70)℃ Process pressure: (-0.02 to 0.1)MPa Accuracy:+0.25% (full scale) Signal output: (4~20)mAV/HART Power supply: two wire system 24V DC Four wire system 24V DC/220V AC Explosion proof grade: Exd llC T4 Gb |
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| ABDT-CS21-10m | Application: Liquid level measurement, solid particle measurement Measuring range:standard probe: corrosion sealed probe: Liquid (0.4~ 10)m liquid (0.4~8)m Solid (0.4~4)m Solid(0.4~ 3.5)m Process connections: M66 x 2 or flange Transducer shell material:PA66+GF30 or PVDF Process temperature:(-40 ~70)℃ Process pressure:(-0.02 to 0.1)MPa Accuracy:+ 0.25%(full scale) Signal output:(4~20) mA/HART Power supply:two wire system 24V DC Four wire system 24V DC/220V AC Explosion proof grade: Exd llC T4 Gb |
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| ABDT-CS21-15m | Application: Liquid level measurement, solid particle measurement Measuring range:standard probe: corrosion sealed probe: Liquid (0.5~ 15)m liquid (0.5~12)m Solid (0.5~6)m Solid (0.5~5)m Process connections: M66 x 2 or flange Transducer shell material: PA66+GF30 or PVDF Process temperature:(-40~70)℃ Process pressure:(-0.02 to 0.1)MPa Accuracy:+ 0.25%(full scale) Signal output:(4-20) mA/HART Power supply:two wire system 24V DC Four wire system 24V DC/220V AC Explosion proof grade: Exd llC T4 Gb |
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