Wall-Mounted TVOC Air Quality Sensor RS485 Transmitter
Wall-Mounted TVOC Air Quality Sensor RS485 Transmitter
Wall-Mounted TVOC Air Quality Transmitter with RS485 Interface
Monitor the air quality in your indoor spaces with precision using this high-accuracy TVOC (Total Volatile Organic Compound) Sensor Transmitter. Featuring a robust RS485 output interface, wide measurement range, and a sleek wall-mounted design, this detector is ideal for offices, factories, laboratories, smart buildings, and HVAC systems that require continuous, reliable indoor air quality data.
Made in Mainland China.
Key Features
- Wide TVOC Measurement Range: 0–60,000 ppb — captures trace to high concentrations of volatile organic compounds.
- High Accuracy: Typical accuracy of 8% FS (@C2H6O, 0.5 ppm, 25°C, 50% RH) for dependable readings.
- RS485 Output Signal: Industry-standard communication for seamless integration with PLCs, BMS, SCADA, and automation systems.
- Broad Operating Range: Functions reliably from -40°C to +85°C and 0%–95% RH — suitable for demanding environments.
- Low Power Consumption: Only 0.5W (RS485) / 0.4W (analog) — energy-efficient continuous operation.
- Fast Data Refresh: 2-second analog data refresh time for near real-time monitoring.
- Wall-Mounted Installation: Clean, professional installation that fits seamlessly into any indoor setting.
- Durable Construction: Plastic housing designed for long-term, stable performance.
Technical Specifications
| Parameter | Value |
|---|---|
| Output Signal | RS485 |
| Power Supply | DC 10–30V |
| Max Power Consumption | 0.5W (RS485) / 0.4W (Analog) |
| Working Temperature | -40°C ~ +85°C |
| Working Humidity | 0% RH ~ 95% RH |
| TVOC Measurement Range | 0–60,000 ppb |
| Measurement Object | Volatile Organic Compounds (VOCs) |
| Data Refresh Time | 2 seconds (analog) |
| Accuracy | 8% FS (@C2H6O, 0.5 ppm, 25°C, 50% RH) |
| Installation Method | Wall-Mounted |
| Preheating Time | <24 hours |
| Voltage Output Load | Output resistance ≤250Ω |
| Current Output Load | ≤600Ω |
| Housing Material | Plastic |
Package Contents
- 1 × TVOC Sensor / Air Quality Transmitter
Ideal Applications
- Smart building and HVAC air quality management
- Industrial facility and warehouse monitoring
- Office and commercial indoor environment control
- Laboratory and cleanroom VOC tracking
- BMS / SCADA integration via RS485
For more information on indoor air quality standards and volatile organic compounds, visit the EPA's Indoor Air Quality resource on Volatile Organic Compounds.
Frequently Asked Questions
Q: What does a TVOC sensor measure and why is it important for indoor air quality?
A: A TVOC (Total Volatile Organic Compound) sensor measures the cumulative concentration of volatile organic compounds in the air, expressed in ppb (parts per billion). VOCs are emitted by paints, cleaning products, furniture, adhesives, and many other common materials. Monitoring TVOC levels helps maintain a healthy and compliant indoor environment in offices, factories, and smart buildings.
Q: What communication protocol does this air quality transmitter use?
A: This TVOC transmitter uses the RS485 communication protocol, which is an industry-standard serial interface widely compatible with PLCs, building management systems (BMS), SCADA platforms, and data loggers. It supports reliable long-distance data transmission, making it ideal for professional installation scenarios.
Q: How is the TVOC sensor installed?
A: The sensor is designed for wall-mounted installation, making it easy to position at breathing height in any indoor space. It connects via DC power supply (10–30V) and communicates through the RS485 output. A preheating time of up to 24 hours is recommended before taking calibrated readings.
Q: What is the measurement range of this TVOC detector?
A: This sensor covers a TVOC measurement range of 0 to 60,000 ppb, with a typical accuracy of 8% FS under standard conditions (0.5 ppm ethanol, 25°C, 50% RH). This wide range makes it suitable for both low-level monitoring and detecting elevated VOC concentrations in industrial or commercial environments.