This document describes the JXBS-3001-CO2 Carbon Dioxide Transmitter, a sensor device designed for measuring carbon dioxide concentration, and in some configurations, also temperature and humidity.
Function Description:
The JXBS-3001-CO2 is a carbon dioxide sensor that utilizes a specialized CO2 concentration sensor probe as its core detecting device. It is designed for various applications requiring accurate CO2 measurement. The device communicates via RS485 using the Modbus RTU protocol, allowing for integration into existing control systems like PLCs or MCUs, or direct connection to a PC for monitoring and configuration. Some models of the sensor also include capabilities for measuring temperature and humidity.
The sensor is built with a polymer gas membrane over its detection hole. This membrane is breathable and impermeable, allowing gas permeation while insulating against moisture. Users are explicitly warned not to tear this membrane as it affects the product's life and performance.
Important Technical Specifications:
- Measurement Range: The sensor is available in several ranges, including 5000ppm, 1%, 3%, 65%, and 100%.
- Power Supply: Operates on 12-24V DC.
- Precision: ±(50ppm+3%Readings) at 25°C.
- Average Current: Less than 85mA.
- Non-Linearity: Less than 1%F-S.
- Output Signal: RS485 Modbus.
- Power Consumption: Less than 1W (at 12V DC, 25°C).
- Working Humidity Environment: 0-95%RH.
- Working Temperature Environment: -10-50 °C.
- Pressure Range: 0.9-1.1atm.
- Baud Rate: Configurable to 2400 bps, 4800 bps, or 9600 bps. Factory default is 9600 bps.
- Data Bits: 8 bit.
- Parity Bit: No.
- Stop Bit: 1 bit.
- Error Checking: CRC (redundant loop code).
Probe Parameters and Selection:
The manual lists several probe options with varying ranges, precision, anti-high humidity features, preheat times, and response times:
- 5KN: 5000ppm range, ±(50ppm+5%) precision, no anti-high humidity, <120S preheat time, <30S response time.
- 5KW: 5000ppm range, ±(50ppm+5%) precision, with anti-high humidity, <60S preheat time, <1S response time.
- 1BW: 1% range, ±(50ppm+5%) precision, with anti-high humidity, <60S preheat time, <1S response time.
- 3BW: 3% range, ±(50ppm+5%) precision, with anti-high humidity, <60S preheat time, <1S response time.
- 65B: 65% range, ±(50ppm+5%) precision, no anti-high humidity, <30S preheat time, <1S response time.
- 100B: 100% range, ±(50ppm+5%) precision, no anti-high humidity, <30S preheat time, <1S response time.
Usage Features:
- Easy Installation: The device is designed for vertical installation in environments without wind or rain. It features two fixed holes with a spacing of 105mm, each 3mm in size.
- Wiring Sequence: The device uses a standard wiring scheme:
- Brown: Power supply Positive (12-24V DC)
- Black: Power supply Negative
- Yellow (Gray): 485-A
- Blue: 485-B
The default cable length is 0.6 meters, which can be extended by the user as needed.
- Communication Protocol: Employs the Modbus RTU protocol over RS485, making it compatible with a wide range of industrial control systems.
- Configuration Tool: A dedicated "CONFIGURATION TOOL" software is provided for easy testing and setup of the sensor device. This tool allows users to connect the transmitter to a PC via an RS485 to USB adapter, identify the COM port, and configure communication settings such as Baud Rate and Device Address. It also enables reading of sensor data, including CO2 concentration, temperature, and humidity, depending on the sensor model. The software supports testing different sensor types by selecting appropriate options (e.g., "GAS" for oxygen sensors, "NORMAL" for temperature and humidity sensors).
- Multiple-Ended Connection: The system supports multiple transmitters connected to a single PLC, MCU, or PC via RS485, allowing for scalable monitoring solutions.
- Register Address Mapping: The manual provides a detailed Modbus register map for accessing sensor data and configuring device parameters:
- 0000H (40001): Humidity (Unit 0.1%RH) - Read-Only
- 0001H (40002): Temperature (Unit 0.1°C) - Read-Only
- 0005H (40006): Carbon Dioxide (unit 1ppm) - Read-Only
- 0100H (40101): Device Address (0-252) - Read/Write
- 0101H (40102): Baud Rate (2400/4800/9600) - Read/Write
- Communication Examples: The manual includes detailed examples of Modbus inquiry and answer frames for reading carbon dioxide concentration, temperature, and humidity values, facilitating integration with custom software or PLCs.
Maintenance Features:
- Product Overview: The sensor probe is described as having characteristics of wide measurement range, high precision, good linearity, good versatility, convenient using, easy installation, long transmission distance, and moderate price, suggesting a robust and reliable design.
- Warranty: The device comes with a 2-year warranty for the host unit and a 1-year warranty for the sensor probe, indicating manufacturer confidence in its durability.
- Gas Detection Hole Protection: The critical polymer gas membrane over the detection hole is designed to protect the sensor while allowing gas permeation. Users are warned against damaging this membrane to ensure product longevity and accurate performance.
- Pre-Installation Check: Users are advised to check the list of devices before installation, which typically includes the sensor device itself, a 12V power adapter (optional), a USB to 485 device (optional), and a warranty card/certificate. This helps ensure all necessary components are present for proper setup.
- Interface Description Warning: The manual emphasizes reading the interface description in detail before wiring and use, as improper use can lead to irreversible damage to the product, highlighting the importance of correct installation for long-term operation.
Need help?
General
To Next Page
