Continuous IAQ Monitoring Instruments

Continuous IAQ monitoring equips TAB and HVAC professionals with objective, time-based data that supports smarter decisions, faster diagnostics, and consistent documentation. Instead of relying on snapshots, teams see how air quality changes across the day, week, and season — information that often reveals ventilation shortfalls, occupancy-driven spikes, or control schedules that need adjustment.

What These Instruments Measure

• Core IAQ and Comfort: CO2, VOCs, particulate matter (PM), temperature, and relative humidity
• Targeted Gases by Model: CO, formaldehyde, NO2, O3, and SO2

The TSI AirAssure 8144 series offers configurations aligned to common use cases:

• 8144-2: CO2, VOCs, PM, temperature, and relative humidity
• 8144-4: Adds formaldehyde and carbon monoxide capabilities
• 8144-6: Expands to nitrogen dioxide, ozone, and sulfur dioxide

Why Continuous Monitoring Matters for TAB and HVAC

• Commissioning and Re-commissioning: Trend CO2 and PM to evaluate ventilation strategies, verify sequences of operation, and confirm that setpoints support comfort across occupied periods.
• Troubleshooting: Use data to pinpoint when and where IAQ issues emerge, separating occupancy effects from ventilation or filtration constraints.
• Ventilation Verification: Compare trends before and after control changes, filter swaps, or economizer adjustments to validate improvements.
• Energy and Comfort Balance: Identify times when outside air rates can be optimized to support comfort while helping manage energy use.
• Reporting and Communication: Share clear, time-series data with building owners, facility staff, and occupants to support decisions and track progress.

Benefits for Field Teams

• Faster Diagnostics: Continuous data helps narrow root causes and prioritize fixes.
• Clear Documentation: Time-stamped trends create a defendable record for TAB reports and service logs.
• Scalable Deployment: Multi-parameter sensing allows broader coverage with fewer devices, helping you match monitoring scope to project goals and budgets.
• Actionable Insights: Seeing how parameters move together — like CO2 with occupancy or PM with filtration — enables targeted adjustments that support better outcomes.

How to Select the Right Configuration

• Define Primary Questions: Are you verifying ventilation, addressing odors, or investigating combustion or traffic-related pollutants?
• Match Parameters to Use Cases: Choose CO2 for ventilation assessment, VOCs for odors/off-gassing, PM for filtration and ingress, and targeted gases (CO, NO2, O3, SO2, formaldehyde) for specific risk indicators.
• Consider Location and Density: Place monitors near representative zones — return air, densely occupied rooms, and spaces with known IAQ challenges.
• Plan for Data Review: Establish thresholds and review routines so findings translate into HVAC adjustments or maintenance actions.

Practical Applications

• Schools and Offices: Trend CO2 to assess ventilation during peak occupancy and adjust schedules accordingly.
• Healthcare and Labs: Monitor PM and targeted gases as part of IAQ and pressurization checks, alongside other controls used in these environments.
• Retail and Hospitality: Use multi-parameter data to address comfort complaints quickly and maintain consistent indoor conditions.
• Industrial and Mixed-Use: Track PM and gases to understand process impacts on adjacent areas and refine ventilation strategies.

With TSI’s AirAssure lineup, TAB and HVAC teams gain reliable measurements across the parameters that matter most. These instruments help you verify system performance, support energy-conscious decisions, and communicate results with clarity — so every adjustment is grounded in data. Explore AirAssure 8144-2, 8144-4, and 8144-6 configurations to align sensing capabilities with your project scope and deliver measurable IAQ improvements.