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TSI / Airflow IAQ-calc

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A range of three instruments used to measure indoor air quality (IAQ) quickly and accurately using a single probe.

+ Model 7515 measures carbon dioxide (CO2) only
+ Models 7525 and 7545 simultaneously measure and data log CO2, temperature, and humidity
+ Model 7545 also measures carbon monoxide (CO)
+ LogDat2 downloading software included (except Model 7515)

Product Features

  • 3 model types
  • Document downloads

Instrument product options

1. Select a model (3 available)



 
Quantity
Continue to select accessories

2. Select accessories

3. Select a calibration

Overview

Features

Features and benefits - All models

  • Low-drift NDIR CO2 sensor for stable, accurate readings
  • Sampling function records multiple point measurements
  • Ergonomic, overmolded case design

Models 7525 and 7545

  • Temperature and relative humidity measurements which helps determine thermal comfort
  • Directly calculates dew point and wet bulb temperatures
  • Electrochemical sensor measures CO (Model 7545)
  • Displays up to three measurment 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 (Models 7525 and 7545):

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 (Models 7525 and 7545):

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)

CO (Model 7545 only):

Sensor type       Electro-chemical

Range      0 to 500 ppm

Accuracy     ± 3.0 % of reading or ± 3 ppm, whichever is greater

Resolution      0.1 ppm

Response time      < 60 seconds to 90 % step change

Downloads

PDF

TSI 7515 IAQ-Calc user manual

  • Technical Document
  • PDF file
  • 300 KB
Download
PDF

TSI 7525 IAQ-Calc user manual

  • Technical Document
  • PDF file
  • 443 KB
Download
PDF

TSI 7545 IAQ-Calc user manual

  • Technical Document
  • PDF file
  • 453 KB
Download
PDF

TSI IAQ-Calc data sheet

  • Technical Document
  • PDF file
  • 1 MB
Download
PDF

TSI NDIR CO2 sensing technology application note

  • Technical Document
  • PDF file
  • 118 KB
Download
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