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JM200 ultrasonic level gauge

Measurement principle Ultrasonic level meter by the transducer (probe) sent high-frequency ultrasonic pulse encountered by the measured medium surface is reflected back, part of the reflected echo is received by the same transducer, converted into electrical signals. The ultrasonic pulse propagates at the speed of sound waves, and the time interval required from the launch to the reception of the ultrasonic pulse is proportional to the distance from the transducer to the surface of the measured medium. The relationship between this distance value S and the speed of sound C and the propagation time T can be expressed by the formula: S = C×T/2. Since the transmitted ultrasonic pulse has a certain width, the reflected wave in a small area close to the transducer overlaps with the transmitted wave, which cannot be identified and the distance value cannot be measured. This area is called the measurement dead zone. The size of the blind area is related to the model of the ultrasonic level meter. Product features ◆ the most complete specifications, one-piece split optional, measuring distance of 4m,8m,12m,20m,40m,60m,100m to choose from ◆ small sound beam angle, short blind spot distance, most suitable for small barrel tank or equipment ◆ output mode is Hart;4 ~ 20mA or 20 ~ 4mA or relay etc. power supply DC24V or 110/220VAC ◆ adopts advanced microprocessor technology, the ultrasonic level meter can be applied to various complex working conditions. The "false echo learning" function enables the meter to correctly confirm the true echo and obtain accurate measurement results under the working conditions of multiple false echoes. The built-in temperature sensor of the transducer can realize temperature compensation of the measured value. The ultrasonic transducer adopts the patented technology of optimal acoustic matching, so that its transmitting power can be radiated more effectively and the signal strength can be improved, thus realizing accurate measurement.


Keywords: Valve

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Detailed introduction

JM200 ultrasonic level gauge
Measuring principle
Ultrasonic level meter by the transducer (probe) sent high-frequency ultrasonic pulse encountered the measured medium surface is reflected back, part of the reflection echo
It is received by the same transducer and converted into an electrical signal. Ultrasonic pulses travel at the speed of sound waves and are required from launch to receipt of the ultrasonic pulse.
The time interval is proportional to the distance from the transducer to the surface of the measured medium. The relationship between this distance value S and the speed of sound C and the transmission time T can be
With the formula: S = CxT/2. Since the emitted ultrasonic pulse has a certain width, so that the distance from the transducer is close to the small segment of the region.
The reflected wave overlaps with the transmitted wave and cannot be identified, and the distance value cannot be measured. This area is called the measurement dead zone. The size of the blind area and the ultrasonic
The type of level meter is related.
Product Features
◆ The most complete specifications, one-piece split optional, measuring distance of 4m, 8m, 12m, 20m, 40m,60m,100m to choose from
The sound beam angle is small, the blind spot distance is short, the most suitable for small tank or equipment
◆ The output mode is Hart;4 ~ 20mA or 20 ~ 4mA or relay, etc.
◆ Supply power DC24V or 110/220VAC
The use of advanced microprocessor technology, ultrasonic level meter can be applied to a variety of complex conditions
◆ The "false echo learning" function enables the instrument to correctly confirm the true echo under the working conditions of multiple false echoes and obtain
Accurate measurement results
The transducer built-in temperature sensor, can realize the temperature compensation of the measured value
The ultrasonic transducer adopts the patented technology of the best acoustic matching, so that its transmitting power can be more effectively radiated and the signal can be improved.
intensity, thereby achieving accurate measurement
















 

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