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Ultrasonic Sensor - LF91B

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Product introduction

The ultrasonic sensor mainly consists of a transmitting section, receiving section, control section, and power supply section.
Among them, the transmitting section is composed of a transmitter and a transducer. The transducer can convert the energy generated when the piezoelectric chip vibrates under voltage excitation into ultrasonic waves, which are then emitted by the transmitter.
The receiving section consists of a transducer and an amplification circuit. The transducer receives the reflected ultrasonic waves. As mechanical vibration occurs when receiving ultrasonic waves, the transducer converts mechanical energy into electrical energy, which is then amplified by the amplification circuit.
The control section manages the entire operating system. It first controls the transmitter to emit ultrasonic waves, then controls the receiver to determine whether the received signal is the ultrasonic wave it emitted, and finally identifies the strength of the received ultrasonic signal.
The power section provides power to the entire system. Under the effect of the power supply and control section, the transmitter and receiver work in coordination to fulfill the sensor’s required function.

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

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 Plate: 100mm × 100mm)

≤10 Hz

≤3.3 Hz

≤7 Hz

≤2.5 Hz

100mm* 100mm

Output Type

D4: NPN, NO/NC selectable

D6: Two PNP switch outputs, NO/NC selectable

DI: 4..20mA current output

D5: PNP, NO/NC selectable

D7: Two NPN switch outputs, NO/NC selectable

DU: 0–10V voltage output

Rated Operating Current

200mA (short-circuit protection / overload protection)

2×100mA (short-circuit protection / overload protection)

≤900 mW

Operating Voltage

10–30V DC, ripple 10%

15–30V DC, ripple 10%

Repeat Accuracy

≤0.5%

≤0. 1%

±0.1% of full-scale value

Range Adjustment

Adjustable far/near range via adjustment wire

Protection Class

IP65

Connection Method

H5 (5-pin) M12 connector / 2m PVC cable

Yellow LED

ON = switch state output; Flashing = setting

Red LED

Error in operation; Target not detected during setting

Shanghai Kayuan Electronic
Technology Co., Ltd.

Shanghai Kayuan Electronic Technology Co.,Ltd is an enterprise specializing in the production and R & D of industrial 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,PAKU INTELLIGENT EQUIPMENT(SHANGHAI)CO.,LTD a subsidiary of Kayuan 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 tea break rooms, 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.