Description
The oxygen gas sensor measures 0-30%VOL (RS485) and 0-25%VOL (analog) with ±3%FS accuracy and 0.1%VOL resolution. It operates on 10~30V DC, requiring 24V for 0~10V output, and is widely used in process control, environmental monitoring, healthcare, and safety applications.
Specification
| Model | ATO-VMS-3002-O2-* |
| Power Supply | 10~30V DC (0~10V output type requires 24V supply) |
| Output Signal | 4-20mA, 0-5V, 0-10V (optional) |
| Power Consumption | RS485: 0.12W; 4-20mA, 0-5V, 0-10V: 0.25W |
| Operating Temperature | -20~50°C |
| Operating Humidity | 5~95%RH, non-condensing |
| Pressure Range | 90~110kPa |
| Stability | ≤5% signal value/year |
| Response Time | ≤10s |
| Preheating Time | ≥5 minutes |
| Zero Drift (-20~40°C) | ±0.3%VOL |
| Repeatability | ≤1% |
| Service Life | ≥24 months |
| Measurement Range | RS485: 030%VOL; Analog: 025%VOL |
| Accuracy | ±3%FS |
| Resolution | 0.1%VOL |
Feature
- High Protection and Durable Exterior: Made with high-density materials and equipped with waterproof seals to provide moisture and dust resistance, ensuring reliable operation in harsh environments.
- Standard ModBus-RTU Communication Protocol: Supports RS485 communication interface with configurable communication addresses and baud rates. It offers a maximum communication distance of up to 2000 meters, ideal for remote monitoring applications.
- High Efficiency and Sensitivity: Equipped with a highly sensitive gas detection sensor that delivers stable signals and high precision, ensuring real-time and accurate oxygen monitoring.
- Wide Application Environments: Suitable for use in factories, warehouses, food storage facilities, farms, orchards, and forestry applications, meeting both industrial and agricultural oxygen detection needs.
Size (Unit:mm)
Wiring Instructions
RS485
Wide voltage power supply input 10~30V is available. 485 signal line wiring, pay attention to the A\B two lines can not be reversed, the address of multiple devices on the bus can not conflict.
| Wire Color | Description | |
| Power | Brown | Power Positive |
| Black | Power Negative | |
| Communication | Yellow | RS485-A |
| Blue | RS485-B |
4-20mA/0-5V
Wide voltage 10~30V DC power input. For 0-10V output type devices only 24V power supply can be used.
| Wire Color | Description | |
| Power | Brown | Power Positive |
| Black | Power Negative | |
| Output Signal | Yellow | Signal Positive |
| Blue | Signal Negative |
Application
Tips: What kind of maintenance does the sensor require?
To ensure long-term performance and accuracy, the sensor requires minimal but regular maintenance, which includes:
- Periodic calibration: Calibration every 6-12 months to correct signal drift and maintain accuracy.
- Cleaning: Gently clean the exterior to remove dust, moisture, or contaminants. Ensure the waterproof and dustproof seals remain intact.
- Inspection: Regularly check for signs of wear, damage, or unusual readings. Address issues promptly to avoid sensor failure.
- System check: For RS485 communication, confirm that the wiring, connections, and data transmission remain stable over time.
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