Volatile Organic Compound Monitor (With Temperature and Humidity)

Product Description

The AI-VOC-TRH is a comprehensive IAQ solution focused on monitoring the critical parameters of Volatile Organic Compounds (VOC), Temperature (T) and Humidity (RH). The instrument, manufactured by Ace Instruments, features a MOX-based sensor suited to measure VOC levels. The parameters are visible on a vibrant touchscreen display, with communication options of RS-485 Modbus or Wi-Fi with dashboard access. VOC monitoring is essential in a variety of industries and settings, including pharmaceutical manufacturing, laboratories, printing facilities, commercial kitchens, retail spaces, offices, and schools. By monitoring VOCs in these settings, you can ensure that the air quality is safe for occupants and prevent negative health impacts. Enure regulatory compliance and occupant health with quick corrective action and air quality alerts from the AI-VOC-TRH.

Why Monitor VOC with Temperature and Humidity

VOC emission from materials is temperature-dependent, higher temperatures accelerate off-gassing from furniture, flooring, and adhesives. Monitoring temperature alongside TVOC helps interpret VOC spikes: a sudden rise correlating with increased temperature may indicate material off-gassing rather than an occupant-generated source. This distinction matters operationally, since off-gassing events call for a different response than occupancy-driven VOC increases, such as extended ventilation or dwell time before an area is reoccupied.

Humidity adds a further layer of context: high humidity can promote microbial VOC production, associated with mould and damp-related air quality issues. Tracking RH alongside TVOC helps flag when a persistent VOC signal may be linked to moisture problems rather than material emissions or occupant activity, pointing facility teams toward the right corrective action.

Features

• 3-in-1 Measurement: Simultaneously monitors TVOC, temperature, and relative humidity in a single wall-mounted unit
• Single Modbus Address: All three parameters available on one address, simplifying BMS wiring and network configuration compared to separate sensors
• Contextual VOC Interpretation: Correlates VOC readings with temperature and humidity trends, helping distinguish material off-gassing from occupant-generated or moisture-related sources
• Compact Wall-Mounted Design: Straightforward installation in offices, corridors, retail spaces, and hospitality interiors without extensive wiring
• RS485 Modbus Output: Enables seamless integration with Building Management Systems for centralized monitoring and automated ventilation response
• Continuous Monitoring: Designed for reliable, uninterrupted operation, supporting ongoing air quality assessment across occupied and post-renovation spaces
• Reduced Installation Complexity: Consolidating three sensors into one device cuts wiring, mounting points, and commissioning time versus deploying standalone instruments

Applications

• Newly Furnished Offices:
  Distinguishes material off-gassing from new furniture and flooring, correlating VOC spikes with temperature to identify emission-driven events
• Healthcare Corridors:
  Monitors VOC alongside temperature and humidity in high-traffic clinical areas where chemical cleaning and material off-gassing both contribute to air quality
• Retail Environments with New Stock or Refurbishments:
  Tracks VOC increases tied to new inventory, packaging, or store refurbishment work, helping separate temporary off-gassing from ongoing air quality issues
• Hospitality Interiors with Frequent Chemical Cleaning:
  Provides context for VOC readings in spaces cleaned frequently with chemical products, helping distinguish cleaning-related spikes from material or humidity-driven sources

Dashboard

Unlock the potential of the AI-VOC-TRH with the Wi-Fi connectivity to a web-based dashboard, enabling you to gain an overview of your devices in a building and generation of reports for audit purposes. The data is accessible via web browser from a device of your choice, choose to view it from mobiles, tablets or cast onto any smart TV for a bigger parameter display.

View Current Data

‍The dashboard offers a view of live data of each IAQ device with a parameter-wise assessment to enable accurate tracking of real-time changes of indoor air quality.

Graphical Trend View

‍A trend view of the data in graphical format is included to provide a detailed analysis of changes of each parameter. Select custom date and times for a comprehensive chart view of any parameters from: temperature, humidity, VOC, CO2, PM2.5 and PM10. The trend view enables informed decision making regarding IAQ levels with easy to interpret visual trends to monitor effectiveness of IAQ strategies and potential concerns.

Custom Reports

‍Know your air with custom report generation, selectable by device, by parameter customized to the duration required. Custom reports enable maintenance of logs for compliance and insight into the prevailing IAQ conditions.

Unlock the potential of indoor air quality monitoring with our feature-packed dashboard for seamless display onto device of user’s choice and powerful report and insight generation.

BMS Integration

With all three parameters available on a single Modbus address, the monitor simplifies BMS integration, reducing the number of addresses and wiring points needed compared with deploying separate TVOC, temperature, and humidity sensors. This consolidated data feed supports more informed ventilation control, allowing the BMS to respond differently depending on whether a VOC event correlates with rising temperature, elevated humidity, or neither.

Frequently Asked Questions (FAQs)

1. What is the AI-VOC-TRH Volatile Organic Compound Monitor?

The AI-VOC-TRH is a wall-mounted indoor air quality monitor that continuously measures Total Volatile Organic Compounds (TVOC), temperature, and relative humidity. By monitoring all three parameters together, it helps building operators maintain healthy indoor environments, optimize ventilation, and improve occupant comfort while reducing energy consumption.

2. What parameters does the AI-VOC-TRH measure?

The AI-VOC-TRH continuously measures:

• Total Volatile Organic Compounds (TVOC)
• Temperature
• Relative Humidity (RH)

These three measurements provide a complete picture of indoor air quality and environmental conditions.

3. What are Volatile Organic Compounds (VOCs)?

Volatile Organic Compounds (VOCs) are carbon-based chemicals that easily evaporate into the air. They are commonly released from:

• Paints and coatings
• Furniture
• Carpets
• Adhesives
• Cleaning chemicals
• Air fresheners
• Building materials
• Office equipment
• Solvents

Monitoring VOC levels helps identify indoor air pollution and maintain a healthier environment.

4. Why combine VOC with temperature and humidity monitoring?

Temperature and humidity have a significant effect on VOC emissions.

As temperature increases, many building materials release VOCs at a faster rate. For some materials, a 10°C increase in temperature can approximately double VOC emissions. Monitoring temperature together with TVOC helps determine whether increased VOC levels are caused by warmer conditions or by another pollution source.

Humidity also plays an important role. Relative humidity above 70% can encourage microbial growth, which may produce biological VOCs. Monitoring all three parameters together provides better insight into indoor air quality and helps identify the likely source of VOC contamination.

5. What are typical TVOC levels in a furnished office?

Newly furnished offices often experience elevated TVOC levels because furniture, flooring, engineered wood products, and adhesives release VOCs after installation.

Typical TVOC concentrations may range from approximately 500 to 2,000 µg/m³ during the first few weeks. With adequate ventilation, these levels generally decrease to below 300 µg/m³ within four to eight weeks.

The AI-VOC-TRH allows facility managers to monitor this off-gassing process and verify when indoor air quality has improved.

6. What TVOC concentration is considered acceptable?

General indoor air quality guidelines classify TVOC levels as follows:

• Below 200 µg/m³ : Excellent indoor air quality
• 200 - 300 µg/m³ : Acceptable for most occupants
• 300 - 3,000 µg/m³ : Elevated levels that may cause discomfort
• Above 3,000 µg/m³ : Very high levels requiring immediate investigation and increased ventilation

Many commercial buildings aim to maintain TVOC concentrations below 300 µg/m³.

7. Is one Modbus address used for all three readings?

Yes. The AI-VOC-TRH uses a single Modbus device address.

TVOC, temperature, and relative humidity are available through different Modbus registers within the same device. This simplifies RS485 network configuration, reduces wiring complexity, and makes system integration easier than installing multiple individual sensors.

8. Where is the AI-VOC-TRH commonly installed?

Typical applications include:

• Office buildings
• Hospitals
• Schools and universities
• Hotels
• Shopping malls
• Airports
• Pharmaceutical facilities
• Laboratories
• Conference rooms
• Commercial buildings
• Green buildings
• Government buildings

9. Can the AI-VOC-TRH be integrated with a Building Management System (BMS)?

Yes. The monitor supports industry-standard communication options, including:

• RS485 Modbus communication
• 4 - 20 mA output
• 0 - 10 V output (depending on model)

These outputs allow seamless integration with Building Management Systems, PLCs, SCADA systems, and HVAC automation controllers.

10. Can the AI-VOC-TRH improve HVAC energy efficiency?

Yes. By continuously monitoring TVOC, temperature, and humidity, the Building Management System can adjust ventilation based on actual indoor air quality instead of operating continuously at maximum capacity. This demand-controlled ventilation approach helps improve indoor air quality while reducing HVAC energy consumption.

11. Can the monitor automatically control ventilation?

Yes. When TVOC levels exceed preset limits, the Building Management System can automatically increase fresh air ventilation, operate exhaust fans, open outside air dampers, or activate air purification systems. Once air quality improves, ventilation can return to normal operating levels.

12. Is the AI-VOC-TRH suitable for continuous monitoring?

Yes. The AI-VOC-TRH is designed for reliable 24×7 continuous operation in commercial, healthcare, educational, pharmaceutical, and industrial applications.

13. Does the monitor require calibration?

The AI-VOC-TRH is factory calibrated before shipment. Periodic verification is recommended to maintain long-term measurement accuracy, particularly in critical indoor air quality monitoring applications.

14. Is installation easy?

Yes. The compact wall-mounted design allows quick installation and easy integration with existing HVAC systems and Building Management Systems. It is suitable for both new buildings and retrofit projects.

15. What are the advantages of using the AI-VOC-TRH?

Key benefits include:

• Simultaneous monitoring of TVOC, temperature, and relative humidity
• Better understanding of indoor air quality
• Supports demand-controlled ventilation
• Helps identify sources of VOC pollution
• Easy BMS and PLC integration
• Multiple communication options
• Reliable industrial-grade performance
• Low maintenance

16. Who typically uses the AI-VOC-TRH?

The AI-VOC-TRH is widely used by:

• Facility managers
• HVAC contractors
• Building automation integrators
• Hospital engineering departments
• School administrators
• Pharmaceutical manufacturers
• Laboratory managers
• Commercial building operators
• Green building consultants
• Industrial maintenance engineers

17. Why choose ACE Instruments?

ACE Instruments has over 30 years of experience in manufacturing indoor air quality monitoring solutions. Customers choose our products for their high measurement accuracy, industrial-grade reliability, easy BMS integration, multiple communication options, calibration support, responsive technical assistance, and proven performance across commercial, healthcare, pharmaceutical, educational, and industrial applications.

18. How do I choose the right Volatile Organic Compound Monitor?

Choosing the right AI-VOC-TRH depends on your application, communication requirements, output signal, installation location, and indoor air quality objectives. Our application engineers can help you select the most suitable monitor for offices, hospitals, schools, laboratories, commercial buildings, pharmaceutical facilities, and other environments where continuous monitoring of TVOC, temperature, and humidity is essential.

Specifications