KJRF-A01-007 Micrometer Precision Ranging Sensor

Features

Repeatability up to 1μm, response speed up to 0.5ms
It features built-in background suppression and is unaffected by the surface color of the object being measured.
It can be used for applications such as detecting object thickness and relative displacement.
Reference Price
US$1.5-150
Prices vary depending on the configuration; please consult customer service for details.

Product Introduction

The A0 Series Laser Displacement Sensor is a high-precision measurement solution designed for challenging industrial environments. Utilizing advanced triangulation technology with a visible 650nm red laser, it provides fast and accurate distance measurement across ranges from 25mm up to 1200mm.

This series distinguishes itself with its robust optical capability. While traditional lasers struggle with dark surfaces, the A0 Series is specifically engineered to measure low-reflectivity targets such as coal, carbon powder, and black rubber, as well as semi-glossy dark objects.

Packed with versatility, the sensor integrates 4-20mA analog output, NPN/PNP switching, and RS485 Modbus communication into a single compact unit. With a resolution as fine as 1 micron and a response time of 1ms, the A0 Series is the perfect choice for quality control, thickness measurement, and level monitoring in mining, automotive, and automated assembly applications.

Model Selection & Variable Specifications

ModelA003A005A010A020A040A070
Measurement Range25 - 35 mm35 - 65 mm65 - 135 mm120 - 280 mm200 - 600 mm200 - 1200 mm
Reference Distance30 mm50 mm100 mm200 mm400 mm700 mm
Repeatability1 μm2 μm4 μm10 μm20 μm0.2 mm
Linearity (F.S.)±0.1%±0.1%±0.1%±0.2%±0.2%±0.6%
Spot SizeΦ0.05 mmΦ0.07 mmΦ0.15 mmΦ0.3 mmΦ0.5 mmΦ0.8 mm

Size and Structure

KJRF-A01-007 Micrometer Precision Ranging Sensor

Parameter Specification
Measurable Targets Natural surfaces, Black objects (Coal, Powder), Dark Glossy surfaces* (Non-transparent, non-highly polished mirrors)
Light Source Red Laser 650nm, Class 2 (Power < 1mW)
Response Time 1 ms
Ambient Light Immunity ≤5000 Lux
Operating Voltage 12 ... 24 VDC ±10%
Output 1 (Switch) NPN / PNP (Max 100mA / 30VDC, Residual Voltage <1.8V)
Output 2 (Analog) 4 ... 20 mA (Load Resistance ≤300 Ω)
Output 3 (Data) RS485 (Standard Modbus RTU Protocol)
Housing Material Aluminum Alloy / Plastic (IP65)
Dimensions 50 × 32 × 23 mm
Weight 50g (sensor only) / 80g (with cable)
Ambient Temperature -10°C ... +50°C
Ambient Humidity 35 ... 85% RH (Non-condensing, No icing)