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Ultrasonic Sensor - LF91B

Product introduction

Ultrasonic sensors are mainly composed of a transmitting part, a receiving part, a control part and a power supply part.
Among them, the transmitting part consists of a transmitter and a transducer, and the transducer can convert the energy generated when the piezoelectric wafer is vibrated by the voltage excitation into ultrasonic waves, and the transmitter will transmit the generated ultrasonic waves; the receiving part consists of a transducer and an amplifier circuit.
Receiving part consists of transducer and amplifier circuit, the transducer receives the reflected ultrasonic waves, due to receive ultrasonic waves will produce mechanical vibration, the transducer can be converted to mechanical energy into electrical energy, and then by the amplifier circuit to amplify the electrical signal generated;
The control part is the control of the whole working system, first control the transmitter part of the transmitter ultrasound, and then the receiver part of the control, to determine whether the received ultrasound is emitted by their own ultrasound, and finally identify the size of the received ultrasound;
The power supply is the power supply for the whole system. In this way, under the action of the power supply and under the control of the control part, the transmitter and the receiver work together to fulfil the required functions of the sensor.

Switching Electrical Diagrams Analogue Electrical Diagrams Dimension Drawing Technical Parameters, Selection Table

Product Model LF91B-AD4-H5 LF91B-BD4-H5 LF91B-AD6-H5 LF91B-BD6-H5 LF91B-ADI-H5 LF91B-BDI-H5
LF91B-AD5-H5 LF91B-BD5-H5 LF91B-AD7-H5 LF91B-BD7-H5 LF91B-ADU-H5 LF91B-BDU-H5
Detection Range 50...500mm 80...2000mm 50...500mm 80...2000mm 50...500mm 80...2000mm
Detection Blind Zone 0...50mm 0...80mm 0...50mm 0...80mm 0...50mm 0...80mm
Transducer Frequency Approx. 380KHz Approx. 180KHz Approx. 380KHz Approx. 180KHz Approx. 380KHz Approx. 180KHz
Response time Approx. 50ms Approx. 150ms 21ms minimum 65ms minimum 21ms minimum 65ms minimum
Switching Frequency Standard Target Board ≤10 Hz ≤3.3 Hz ≤7 Hz ≤2.5 Hz 100mm* 100mm
Output type D4 NPN Normally open/closed selectable D6 two switches PNP normally open / normally closed optional DI 4...20mA short circuit/overload protection
D5 PNP Normally open/closed selectable D7 two switches NPN normally open/closed selectable DU   0-10V
Rated Operating Current 200mA Short circuit protection/overload protection 2* 100mA short-circuit protection/overload protection DI  ≤45 mA            DU  ≤50 mA
Operating Voltage 10-30V DC 10% ripple 15-30V DC 10% ripple
Repeatability ≤0.5% ≤0. 1% ±0. 1% of full scale value
Range Adjustment Furthest and nearest ranges adjustable via adjustment cable
Protection class IP65
Connection method H5 (5-pin) M12 cable / 2 m PVC cable
LED yellow Bright : Switching status output Flashing : Setting
LED red Operating status: Error Setting status: No target detected
Shanghai Kayuan Electronic
Technology Co., Ltd.
Shanghai Kayuan Electronic Technology Co., Ltd is an enterprise specializing in the production and R&D of industrial fluid sensors and controllers. Its main products include switches and sensors for flow, pressure, temperature, and liquid level. In 2008, our assembly plant was established in Shanghai, China, to produce the PAKU series of products. We adopt advanced technology and manufacturing processes across the board. With our professional design and production technology, comprehensive product lines, excellent quality, and sales network services, we can not only provide users with timely and professional technical support but also offer high - quality one - stop services. The company has set up various departments such as the purchasing department, R & D department, quality management department, finance department, sales department, after - sales department, general office, laboratory, archive room, calibration workshop, production workshop, inspection area, storage area, shipping area, and a tea break room, aiming to provide products of excellent quality and sincere services. We adhere to the customer - centric concept of creating value for customers. According to the industry needs of customers, we continuously update technology and optimize services, aiming to become a leader in the field of process automation. PAKU products are now widely used in different industries, including automation complete sets of equipment, petroleum equipment, chemical equipment, power equipment, welding equipment, steel equipment, metallurgical equipment, automobiles, and water treatment. We have served many customers at home and abroad, and our products are sold to countries such as Canada, the United States, Brazil, Indonesia, Vietnam, Thailand, and Russia. In the increasingly competitive global market in the future, PAKU will, as always, serve a wide range of domestic and foreign customers with excellent quality, reasonable and competitive prices, on - time delivery, and perfect after - sales service. We welcome extensive cooperation with OEM and ODM customers.
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