Portable Air Quality Measuring Device TSI Airflow 7515

The TSI Airflow 7515 is a compact, professional CO2 meter designed for fast, reliable indoor air quality checks in offices, schools, healthcare facilities and HVAC commissioning. With its dual‑wavelength NDIR CO2 sensor and stable, low‑drift performance, it delivers confident decisions on ventilation and occupancy in minutes. Lightweight, robust and simple to operate, the 7515 helps you verify ventilation rates, identify problem areas and optimise energy use without complexity—ideal for technicians and facility managers who need trustworthy results on site.

Key Benefits and Applications

• Accurate CO2 diagnosis — High‑stability NDIR sensing ensures trustworthy readings to assess indoor ventilation effectiveness and comfort, supporting better IAQ decisions and compliance.
• Rapid on‑site assessments — Quick response and intuitive operation allow you to walk a building, spot elevated CO2 levels and prioritise corrective actions in real time.
• Optimise HVAC performance — Use measured CO2 to balance fresh‑air intake, reduce energy waste and validate demand‑controlled ventilation strategies during commissioning and service.
• Improve occupant wellbeing — Continuous spot checks in classrooms, meeting rooms and open‑plan areas help maintain healthy environments that support focus and productivity.
• Rugged, portable design — Ergonomic, over‑moulded housing with hard carry case stands up to daily field use, making it a dependable tool for technicians and auditors.
• Professional reporting workflow — Statistical functions such as minimum, maximum and average values streamline documentation for audits, maintenance logs and quality programs.

Featured technical specifications

• Measurement parameter — Carbon dioxide (CO2) measured by non‑dispersive infrared technology with a dual‑wavelength sensor for long‑term stability and low drift.
• CO2 measurement range — 0 to 5,000 ppm, suitable for indoor environments and ventilation verification across typical building applications.
• CO2 accuracy — ±3% of reading or ±50 ppm, whichever is greater, providing dependable decision‑making for compliance and commissioning.
• CO2 resolution — 1 ppm for precise trend spotting and fine adjustments during HVAC balancing.
• Response time — Approximately 20 s to support efficient walkthrough surveys and rapid room‑to‑room checks.
• Operating conditions — 5 to 45 °C operating temperature range for flexible field use in buildings throughout the year.
• Sampling and statistics — Sampling function records multiple point measurements and provides min, max and average to simplify reporting.
• Power supply — Operates on four AA batteries for all‑day portability without relying on mains power.
• Probe dimensions — Approximately 7.0 cm length and 1.9 cm diameter for easy access to diffusers, returns and confined spaces.
• Weight — Around 0.27 kg with batteries, reducing fatigue during extended surveys.
• Included in the kit — Instrument, hard carrying case, four AA alkaline batteries, operation and service manual, and a calibration certificate traceable to NIST for professional assurance.

Why this CO2 meter is the perfect choice

Choose the TSI Airflow 7515 at Stratosens.com to equip your team with a field‑proven, accurate and durable CO2 meter that makes ventilation checks fast and credible. At Stratosens.com you get expert product curation focused on weather and precision instruments, dependable after‑sales support and a ready‑to‑deploy kit with calibration documentation—so you can start measuring and improving indoor air quality from day one.