Kunlun Hai'an JQAW-12 Series CO2 Transmitter User Manual

User manual for the Kunlun Hai'an JQAW-12 series CO2 transmitter, covering installation, wiring, usage, and Modbus communication protocols.

Brand: Kunlun Hai'an
Category: sensor
Document type: User Manual
Language: Chinese
Pages: 4
File format: PDF
File size: 293 KB
Published: 05 November, 2026
Updated: 05 November, 2026
MD5 checksum: 1394393C33D0BE1D6454178513D74400
PDF: Kunlun Hai'an JQAW-12 Series CO2 Transmitter User Manual PDF

About this manual

This manual provides instructions for the Kunlun Hai'an JQAW-12 series CO2 transmitter, which utilizes Non-Dispersive Infrared (NDIR) technology for indoor carbon dioxide measurement. The device features a dual-channel sensor design and supports various output signals including 4-20mA, 0-5V, and network protocols like RS485 and RS232. This manual is written in Chinese.

What's inside

Introduction and Features
Technical Parameters
Appearance and Wiring
Installation Methods
Usage Instructions
Precautions
Transport and Storage
Troubleshooting
Communication Protocol

Specifications

Power Supply	DC24V (22V~26V)
Max Current	80mA
Measurement Range	0ppm~2000ppm / 0ppm~5000ppm
Accuracy	±(40ppm+3%F·S)
Response Time	≤2min
Output Signal	4mA~20mA / 0V~5V / RS485 / RS232
Dimensions	91mm×91mm×30mm

Frequently asked questions

What is the default baud rate for the transmitter?

The default baud rate is 9600.

How long does it take for the sensor to reach maximum accuracy?

It takes up to 10 minutes to reach maximum accuracy after power-on.

What is the working temperature range?

The working environment temperature is 0℃ to 50℃.

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