RS485 Ultraviolet (UV) Intensity Measure Sensor (290-390nm)

Q: What are the possible reasons for no output or output errors?

1. The sensor is a precision device. Please do not disassemble it by yourself when using it to avoid damage to the product.<br> 2. If the reading value is 0, check whether there is a light source and whether the product protective cover is removed.<br> 3. The 485 bus is disconnected, or the A and B lines are connected in reverse. Check whether the power supply meets the marking.

1. Example Code for Arduino-UV Intensity and Index Reading

This project demonstrates how to use an Arduino UNO R3 and Gravity: Active Isolated RS485 to UART Signal Adapter Module to read UV intensity and index values from the RS485 UV Sensor. Users will learn Modbus-RTU communication integration and basic sensor data acquisition.

Reference

This article provides an in-depth explanation of the RS485 communication protocol using Modbus-RTU, focusing on UV intensity measurement, data frame formats, and safety measures against UV exposure.

Parameter	Value
Supply voltage	DC5~30V
Working current	<10mA
Output mode	RS485
UV intensity measurement range	0~15mW/cm²
Resolution	0.01mW/cm²
Accuracy	±10%FS (@365nm, 60%RH, 25°C)
UV index measurement range	0-15
Wavelength range	290-390nm
Response time	0.2s
Working temperature	-25°C~+60°C
Protection level	IP67
Sensor cable length	20cm
Adapter cable length	70cm

Num	Label	Description
Brown line	VCC	Power input positive pole, DC5-30V power supply
Black line	GND	Power ground wire
Yellow line	485-A	RS485 data line A
Blue line	485-B	RS485 data line B

RS485 Ultraviolet (UV) Intensity Measure Sensor (290-390nm)

Specification

Pinout