Digital Laser Displacement Sensor, 85mm, RS485/4-20mA

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SKU: SUCH-LASER-CR85DGR

$815.06

● 85 mm center distance range ● RS485 /4-20mA ● OLED display ● 650nm red laser

Communication Interface *

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🕒 Delivery date: 6-12 days

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Overview
Specs
Application
FAQ
Reviews

Overview

The digital laser displacement sensor is an industrial sensor designed for non-contact precision displacement measurement. It features a measurement range of 85 mm, a resolution of 30 μm, and a repeatability of 60 μm, and supports RS485 or 4–20 mA output. Suitable for industrial automation engineers and equipment developers, it is commonly used in assembly line inspection, robot positioning, and material thickness monitoring to help improve production efficiency and measurement consistency.

Feature

85mm digital laser displacement sensor feature

The lightweight aluminum housing facilitates easy installation and removal, while the user-friendly control panel, paired with an intuitive OLED display, allows for quick configuration of all functions.
The fine 0.5 mm spot diameter enables precise measurement of extremely small objects.
SUCH digital laser sensor allows for easy adjustment of response time via buttons or remote programming to suit various applications.
Flexible RS485/4-20mA output options and a fully shielded design provide enhanced resistance to interference.
With an IP67 protection rating, it can be used with ease even in environments with high levels of water and dust.

Dimension (unit: mm)

85mm digital laser displacement sensor dimension

Detail

85mm digital laser displacement sensor detail

Metal Housing Design: Lightweight, easy to install, and with more stable performance.
OLED Digital Display: Equipped with a user-friendly control panel for quick configuration of all functions.
Integrated Measurement and Control: The laser sensor features a built-in processor design, saving space and reducing the user’s wiring workload.

Wiring Diagram

85mm digital laser displacement sensor wiring diagram

Specs

Model	SUCH-PDA-CR85DGR	SUCH-PDA-CR85TGI
Measuring Center Distance	85 mm
Measuring Range	±25 mm
Full Scale	50 mm (F.S.)
Output 1	RS-485 (supports Modbus protocol)	4–20 mA (load resistance <390 Ω)
Output 2	NPN	PNP
Linear Accuracy	±0.3% F.S.	±0.4% F.S.
Distance Setting	Button / Communication settings	Button configuration
Supply Voltage	10–30 VDC	12–24 VDC
Connection Type	2 m 5-core PVC lead	2 m 4-conductor PVC lead
Power Consumption	<700 mW
Load Current	200 mA
Voltage Drop	<2.5 V
Light Source Type	Red laser (650 nm), Class 2
Spot Size	Φ0.5 mm @ 85 mm
Resolution	30 μm @ 85 mm
Repeatability	60 μm
Response Time	2 ms / 16 ms / 40 ms (configurable)
Display	OLED display (size: 14 × 10.7 mm)
Temperature Drift	±0.04% F.S./°C
Indicator Lights	Power Indicator: Green LED
	Operation Indicator: Yellow LED
	Alarm Indicator: Yellow LED
Protection Circuit	Short-circuit protection, reverse polarity protection, overload protection
Built-in Functions	Address and baud rate settings, zero point adjustment, parameter query, self-test, output settings, analog mapping settings, averaging settings, single-point teaching, window teaching, factory reset
Operating Environment	Operating Temperature: -10 to 50°C
	Storage Temperature: -20 to 70°C
	Ambient Humidity: 35–85% RH (non-condensing)
Ambient Light Immunity	Incandescent Light: <3000 lux
Protection Rating	IP67
Material	Housing: Aluminum
	Lens Cover: PMMA
	Display panel: PC
Vibration Resistance	10–55 Hz, dual amplitude 1 mm, 2 hours each in X/Y/Z directions
Shock Resistance	500 m/s² (approx. 50G), 3 times each in X/Y/Z directions
Accessories	M4 screws (35 mm) × 2, nuts × 2, washers × 2, mounting bracket, user manual
Dimensions	655123 mm

Application

Automated Warehousing Systems

Automated Production Lines

Semiconductor Industry

FAQ

Q1: What applications are suitable for the 85mm-range digital laser displacement sensor? ❯

With a measurement range of 85mm, this laser displacement sensor is suitable for short-distance, high-precision detection scenarios, such as thickness measurement, position control, automated assembly, and precision equipment monitoring. Its non-contact measurement method is particularly well-suited for detecting fragile or high-temperature objects.

Q2: How do I choose between RS485 and 4-20mA outputs for a digital laser displacement sensor? ❯

RS485 is a digital communication interface suitable for long-distance, multi-device networking, and industrial automation systems. 4-20mA is an analog signal output with strong noise immunity, suitable for PLCs and traditional control systems. Users should select the appropriate interface based on their system architecture and transmission distance.

Q3: What materials can digital laser displacement sensors measure? ❯

Laser displacement sensors can be used on a variety of material surfaces, such as metal, plastic, glass, and rubber. For highly reflective or transparent materials, it is recommended to adjust the installation angle or use special processing methods to improve measurement stability and accuracy.

1 review(s)

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From: Felix | Date: 5/11/2026 1:17 AM

No-brainer for thickness tracking

Grabbed this digital laser displacement sensor because I needed to measure thickness on the fly. Setup was super straightforward, basically plug and play for the standard readings. It's a bit pricey, honestly, but the build is solid and definitely pro gear.

Digital Laser Displacement Sensor, 85mm, RS485/4-20mA

Feature

Dimension (unit: mm)

Detail

Wiring Diagram

Automated Warehousing Systems

Automated Production Lines

Semiconductor Industry

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