DigiGas-VNI Air Quality VOC and NOx Index Sensor, SDI12, RS485 Interface

Time:2025/02/24 View:1032 Category:Gas Concentration Category:Measurements Category:Products Category:SDI-12 Products Category:SDI-12 Sensors

　　DigiGas-VNI is a digital gas concentration sensor designed for easy integration into air purifiers or demand-controlled ventilation system, providing one VOC and one NOx based indoor air quality signal, It’s applicable for science research, warehousing and cold chain logistics, laboratory application etc.

　　The SDI-12 output provides universal compatibility with any SDI-12-enabled data logger and low power applications, or use a RS485 physical interface for applications that require long cable runs or many sensors.

Resources
User Manual	DigiGas-VNI Air Quality VOC and NOx Index Sensor User Manual (RS485, SDI-12 Interface)
Software (RS485 Interface)	SensorOneSet-EN
Software (SDI-12 Interface)	SensorOneSetSDI12-EN

Features

■ Integrated with Sensirion SGP41 sensor, VOC and NOx Index output

■ Calibrated output with temperature and humidity compensation

■ Outstanding long-term stability and lifetime

■ Digital Output SDI-12 or RS485 with built-in surge protection

■ Small size with high accuracy with excellent stability

■ Wall mounting installation

■ Reverse power protection and Built-in TVS/ESD protection

■ Excellent price-performance ratio

Applications

■ Air purifiers

■ Ventilation system

■ Indoor air quality monitoring

■ Laboratory application

Specifications
Output Interface	Optional: SDI-12, V1.3 Optional: RS485, Modbus-RTU
Power Supply	5-28V DC
Power Consumption	SDI-12 Interface: Quiescent current in continuous measurement mode: <2mA @12V DC Max. current during measurement: <5mA@12VDC RS485 Interface: Quiescent current in continuous measurement mode: <5mA @12V DC Max. current during measurement: <10mA@12VDC
VOC Index	Range: 1-500, Resolution: 1
NOx Index	Range: 1-500, Resolution: 1
Temperature Accuracy	Range: -40～125℃, Resolution: 0.01℃ Typical Accuracy: +/-0.2℃ Note: The long-term operating temperature range is -40~80 ° C
Humidity Accuracy	Range: 0-100%, Resolution: 0.01% Typical Accuracy: ±1.8% RH
Operating	Temperature: -40～80℃, Humidity: 0-95%? non-condensing
IP Ratings	IP50
Installation	Wall mounting
Cable Length	2 meters or Customize
Dimension	Sensor body: 11125.5mm (LengthDiameter)

Ordering Information
Parameters	Code	Comments
Code 1:Product Series	DigiGas-VNI	DigiGas-VNI, VOC and NOx Index, Air temperature, humidity sensor
Code 2: Range and Accuracy	A	Default, Please refer to “Accuracy” chapter
Code 3: Power Supply	A X	5-28V DC Customize
Code 4: Output Interface	A B	RS485(Modbus-RTU) SDI-12
Code 5: Connector	B C	Cold pressed terminal Stripped & tinned lead wires
Code 6: Cable Length	002 XXX	2 Meters Customize, XXX is required cable length (Unit: meter)
Ordering Code Example: DigiGas-VNI-A A A B 002 Product Series: DigiGas-VNI, VOC and NOx Index, Air temperature, humidity sensor; Range and Accuracy: Default; Power Supply: 5-28V DC; Output Interface: RS485(Modbus-RTU); Connector: Cold pressed terminal; Cable Length: 2 Meters