TJWGas-OX（Z20) Oxygen Sensor is a digital oxygen concentration and oxygen partial pressure sensor designed for meteorological observation, environmental monitoring, laboratory applications, HVAC systems, and ventilation control. Based on optical fluorescence quenching technology, it measures oxygen partial pressure, oxygen concentration, temperature, and barometric pressure in one compact wall-mounted device.
With optional RS485 Modbus RTU or SDI-12 V1.3 output, low power consumption, temperature and barometric pressure compensation, and digital data communication, this oxygen sensor is suitable for data loggers, weather stations, IoT gateways, environmental monitoring systems, and remote monitoring platforms.
2. Product Overview
JWGas-OX(Z20) Oxygen Concentration and Partial Pressure Sensor is developed for continuous oxygen monitoring in environmental and control applications. It uses optical fluorescence quenching technology and includes built-in temperature and barometric pressure compensation, helping provide stable oxygen measurement data in changing ambient conditions.
The sensor supports both SDI-12 and RS485 Modbus RTU, making it easy to connect with weather stations, environmental data loggers, HVAC controllers, laboratory monitoring systems, IoT gateways, and cloud platforms. It outputs oxygen partial pressure, oxygen concentration percentage, temperature, and barometric pressure, giving users a complete set of oxygen-related environmental data.
According to the supplier manual, the sensor offers 0–300 mbar oxygen partial pressure range, 0–25% oxygen concentration range, 500–1200 mbar barometric pressure measurement, IP50 protection, wall-mounted installation, default 2 m cable, and a compact body size of 111 × 25.5 mm.
Determined by oxygen partial pressure and barometric pressure accuracy
Temperature Range
-10 to 60°C
Temperature Resolution
0.1°C
Temperature Accuracy
±2°C
Barometric Pressure Range
500–1200 mbar
Barometric Pressure Resolution
1 mbar
Barometric Pressure Accuracy
±5 mbar
Working Environment
10 to 45°C, 0–95% RH non-condensing
Output Option 1
SDI-12 V1.3
Output Option 2
RS485 Modbus RTU
Power Supply
9–28 V DC
Protection Rating
IP50
Installation Method
Wall-mounted
Default Cable Length
2 m
Max Custom Cable Length
5 m
Sensor Body Size
111 × 25.5 mm
OEM ODM
Available
3. Dimension
4. Communication and Integration
RS485 Modbus RTU Output
The RS485 version supports Modbus RTU and is suitable for industrial IoT systems, weather stations, HVAC controllers, data acquisition units, PLC systems, and cloud monitoring platforms. The default communication setting is 9600 bps, 8 data bits, no parity, and 1 stop bit.
SDI-12 Output
The SDI-12 version is suitable for environmental monitoring stations, meteorological data loggers, hydrological stations, and low-power field monitoring systems. Through SDI-12 commands, the sensor can output oxygen partial pressure, temperature, barometric pressure, and oxygen concentration percentage.
The oxygen concentration range is 0 to 25%, with a resolution of 0.01%.
Q
3. What is the oxygen partial pressure range?
A
The oxygen partial pressure range is 0 to 300 mbar, with a resolution of 0.1 mbar and accuracy of <2% FS.
Q
4. Does JWGas-OX(Z20) support RS485 Modbus RTU?
A
Yes. JWGas-OX(Z20) supports RS485 Modbus RTU, making it suitable for IoT gateways, PLC systems, HVAC controllers, weather stations, and cloud monitoring platforms.
Q
5. Can JWGas-OX(Z20) work with SDI-12 data loggers?
A
Yes. JWGas-OX(Z20) supports SDI-12 V1.3, making it suitable for meteorological data loggers, environmental monitoring stations, and low-power field monitoring applications.
Q
6. Is this oxygen sensor suitable for HVAC ventilation monitoring?
A
Yes. The sensor is suitable for HVAC ventilation control, indoor air monitoring, and environmental monitoring where oxygen concentration and pressure-related data are required.
Q
7. Does JWGas-OX(Z20) measure barometric pressure?
A
Yes. JWGas-OX(Z20) measures barometric pressure from 500 to 1200 mbar, with 1 mbar resolution and ±5 mbar accuracy.
Q
8. What is the power supply range?
A
The sensor supports 9–28 V DC power input, suitable for most data loggers, controllers, IoT gateways, and remote monitoring systems.
Q
9. Is JWGas-OX(Z20) suitable for battery-powered systems?
A
Yes. The SDI-12 version has a static current of less than 10 μA @ 12 V DC, making it suitable for low-power battery-powered or solar-powered monitoring stations.
Q
10. What is the working environment of the sensor?
A
The recommended working environment is 10 to 45°C and 0–95% RH non-condensing.
Q
11. Can the sensor output both raw and corrected values?
A
Yes. The sensor can output raw and offset-corrected values for oxygen partial pressure, oxygen concentration, temperature, and barometric pressure through SDI-12 or RS485 communication.
Q
12. Does it support OEM or ODM customization?
A
Yes. it supports OEM and ODM customization, including communication interface, cable length, labeling, installation accessories, and system integration requirements.
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