The TSI / Airflow 7525 instrument is the ideal tool for accurately measuring indoor air quality (IAQ) quickly and accurately using a single probe. This model is able to simultaneously measure and data log CO2, temperature, and humidity
Features
Features and benefits
- Low-drift NDIR CO2 sensor for stable, accurate readings
- Sampling function records multiple point measurements
- Ergonomic case design
- Temperature and relative humidity measurements which helps determine thermal comfort
- Directly calculates dew point and wet bulb temperatures
- Displays up to three measurement or calculated parameters
- TSI LogDat2 software permits easy transfer of data to a computer
- Data can be reviewed on-screen, or downloaded to a computer for easy report generation
- Statistics function displays average, maximum and minimum values, and the number of recorded samples
Technical
Carbon dioxide (CO2):
Sensor type Dual-wavelength NDIR (non-dispersive infrared)
Range 0 to 5,000 ppm
Accuracy 1 ± 3.0 % of reading or ± 50 ppm, whichever is greater
Resolution 1 ppm
Response time 20 seconds
Temperature:
Sensor type Thermistor
Range 0 to 60 °C
Accuracy ± 0.5 °C
Resolution 0.1 °C
Response time 30 seconds (90 % of final value, air velocity at 2 m/s)
Relative humidity:
Sensor type Thin-film capacitive
Range 5 % to 95 % rh
Accuracy 2 ± 3.0 % rh
Resolution 0.1 % rh
Response time 20 seconds (for 63 % of final value)