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Ultrasonic Sensor - LF91A

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Product introduction

The ultrasonic sensor is mainly composed of a transmitting section, a receiving section, a control section, and a power supply section.
Among them, the transmitting section consists of a transmitter and a transducer. The transducer can convert the energy generated by the vibration of the piezoelectric chip under voltage excitation into ultrasonic waves, and the transmitter emits the generated ultrasonic waves.
The receiving section consists of a transducer and an amplification circuit. The transducer receives the reflected ultrasonic waves. Since mechanical vibrations are generated when receiving ultrasonic waves, the transducer can convert mechanical energy into electrical energy, and the amplification circuit amplifies the generated electrical signal.
The control section controls the entire operating system. First, it controls the transmitter to emit ultrasonic waves, then controls the receiver to determine whether the received waves are those emitted by itself, and finally identifies the strength of the received ultrasonic waves.
The power supply section is the power device for the entire system. Thus, under the action of the power supply and the control section, the transmitter and receiver cooperate to complete the sensor's required functions.

Switching Output Wiring Diagram Analog Output Wiring Diagram Dimensions Diagram Technical Parameters & Model Selection Table

Model Number

LF91A-AD4-H5

LF91A-BD4-H5

LF91A-AD6-H5

LF91A-BD6-H5

LF91A-ADI-H5

LF91A-BDI-H5

LF91A-AD5-H5

LF91A-BD5-H5

LF91A-AD7-H5

LF91A-BD7-H5

LF91A-ADU-H5

LF91A-BDU-H5

Detection Range

50...500mm

70...1000mm

50...500mm

70...1000mm

50...500mm

70...1000mm

Dead Zone

0...50mm

0...70mm

0...50mm

0...70mm

0...50mm

0...70mm

Transducer Frequency

Approx.380KHz

Approx.205KHz

Approx.380KHz

Approx.205KHz

Approx.380KHz

Approx.205KHz

Response Time

Approx.50ms

Approx.125ms

Approx.50ms

Approx.125ms

Approx.50ms

Approx.125ms

Switching Frequency (Standard Target Plate)

≤8 Hz

≤3 Hz

≤8 Hz

≤3 Hz

100mm* 100mm

Output Type

D4 NPN NO/NC Selectable

D6 Two Switching Outputs PNP NO/NC Selectable

DI 4..20mA Short Circuit/Overload Protection

D5 PNP NO/NC Selectable

D7 Two Switching Outputs NPN NO/NC Selectable

DU 0-10V

Rated Operating Current

200mA Short Circuit Protection/Overload Protection

2*100mA Short Circuit Protection/Overload Protection

DI ≤45mA

DU ≤50mA

Operating Voltage

10-30V DC Ripple 10%

15-30V DC Ripple 10%

Repeat Accuracy

≤1%

±1.5% of Full Scale

Range Adjustment

Adjustable for Farthest and Nearest Range via Adjustment Line

Protection Grade

IP65

Connection Method

H5 (5-pin) M12 Connection Cable / 2m PVC Cable

LED Yellow Light

Switching Status Indication – Yellow light flashes when target is detected under setting state

LED Red Light

Red light always on: Error

Red light flashing: No target detected under setting state

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.