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TSI 7545 IAQ-Calc Indoor Air Quality Meter
TSI 7545 IAQ-Calc Indoor Air Quality Meter
TSI 7545 IAQ-Calc
Price: $2,250.00
Sale Price: $2,025.00

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Product Code: 7545


TSI 7545 IAQ-Calc Indoor Air Quality Meter

The TSI 7545 IAQ-Calc Indoor Air Quality Meter offers a compelling package for the IAQ professional: four critical measurements taken simultaneously, full data logging capability, and reliably high accuracy backed by NIST certification. The 7545 measures carbon dioxide (CO2), temperature, and relative humidity, then adds one final important IAQ measurement: carbon monoxide (CO). Carbon monoxide is one of the more toxic indoor pollutants and is byproduct of incomplete fossil fuel combustion. Common CO sources include tobacco smoke, poorly adjusted or malfunctioning heating systems, and automobile exhaust. The TSI 7545 IAQ Meter helps ensure that buildings are comfortable, healthy, and most importantly, safe.

In addition to measuring CO, CO2, temperature, and humidity, the TSI 7545 calculates other parameters important to building comfort and efficiency, including dew point, wet bulb temperature, and percent outside air (%OA). The display will show up to three readings simultaneously, allowing a close watch on real time sampling. Logging and sampling functions are user adjustable for the full control and flexibility professional IAQ assessments demand. To steady readings in unsteady conditions, the TSI 7545 has an adjustable time constant which will average the reading over an optimal period.

The TSI 7545 IAQ-Calc has full data logging capabilities, storing over 26,000 data points. Each sample is of user-determined length and can be stored with all available measurement parameters. Samples can be grouped in up to 100 test groups, and all samples and groups can be recalled directly on the meter itself. Additionally, the 7545 includes TSI LogDat2 downloading software for easy transfer to a PC computer with the included USB cable. Users always have easy access to all data with the 7545 IAQ Meter. The logging interval is user selectable, storing samples from once a second to once an hour. The TSI 7545 IAQ-Calc Indoor Air Quality Meter gives professionals concerned with IAQ all the measurements, features, and adjustability needed to assess and document critical indoor air quality conditions.


  • Low-drift NDIR CO2 sensor for stable, accurate readings
  • Temperature and relative humidity measurements help determine thermal comfort
  • Directly calculates dew point and wet bulb temperatures
  • Electrochemical sensor measures CO
  • Calculates % outside air from either CO2 or temperature
  • Displays up to three parameters
  • Logs up to 26,900 data points with key (4) measured parameters enabled
  • Sampling function records multiple point measurements


  • TSI 7545 IAQ-Calc Indoor Air Quality Meter
  • Hard carrying-case
  • (4) AA alkaline batteries
  • Operation and service manual
  • NIST calibration certificate
  • LogDat2 Downloading Software with USB cable
  • AC adaptor

Warranty Information

The TSI 7545 IAQ-Calc Indoor Air Quality Meter carries a full 2-year factory warranty.

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