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TSI IAQ-Calc IAQ Meter, Model 7545 (Temp/RH/DP/CO2/CO)

SKU: 120221


TSI's IAQ-Calc Meters are outstanding instruments for investigating and monitoring indoor air quality (IAQ)

The TSI IAQ-Calc Model 7545 measures CO2, CO, temperature, humidity, calculates dew point, wet bulb temperature, and % outside air. The Model 7525 also simultaneously measures and data logs multiple parameters.


  • Weight: 0.6 lbs.
  • Meter Dimension: 3.3'' x 7.0'' x 1.8''
  • Power Requirements: Four AA batteries or AC adapter

Features and Benefits:

  • Low-drift NDIR CO2 sensor for stable, accurate readings
  • Sampling function records multiple point measurements
  • Ergonomic, overmolded case design
  • Temperature and relative humidity measurements help determine thermal comfort
  • Calculates % outside air from wither CO2 or temperature
  • Directly calculates dew point and wet bulb temperatures
  • Electrochemical sensor measures CO


  • CO2: Range 0 to 5000 ppm
  • CO: Range 0 to 500 ppm
  • Relative Humidity: Range 5% to 95% RH
  • Temperature: Range 32 to 140F (0 to 60C)

Included Items:

  • Instrument
  • Hard carrying case
  • Downloading software with cable
  • AC Adapter
  • NIST and EAL Calibration certificate
  • Operation and Service manual

This is a special order item.

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