Q-Trak Indoor Air Quality Meter

Easy-To-Use Air Quality Monitoring Instruments Providing Real-Time Measurements.

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  • Overview
  • Features
  • Specifications
  • Applications
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Providing a comfortable, safe and healthy indoor environment is an increasingly important concern. Good air quality increases concentration and productivity. It can also reduce lost days due to absence. TSI's Q-TRAK™ Indoor Air Quality Monitor 7575 provides quick, accurate information to assess key indoor air quality (IAQ) parameters.
On-screen prompts and step-by-step instructions guide the user through operation, instrument setup and field calibration. The Q-Trak IAQ Monitor 7575 also features an ergonomic, over moulded case design with probe holder and a keypad lockout to prevent tampering during unattended use. The Q-Trak IAQ Monitor 7575 is designed to work with a wide range of plug-in probes which expands measurement capability.
  • Simultaneously displays CO2, CO, temperature and humidity measurements
  • Calculates dew point, wet bulb and percent outside air 
  • Large graphic display
    • Displays up to 5 measurements 
    • On-screen messages and instructions 
    • Supports 12 different languages  
  • One instrument with multiple plug-in probe options including VOC’s and air velocity 
  • Store up to 39 days of data collected at one-minute log intervals 
  • TRAKPRO™ data analysis software provided for data logging, analysis and documenting results 
  • Bluetooth communications for transferring data or remote polling
Range:  0 to 5000 ppm
Accuracy:  ±3% of reading or ±50 ppm, whichever is greater
Resolution:  1 ppm
Sensor Type:  Non-Dispersive Infrared (NDIR)
Range:  32 to 140°F (0 to 60°C)
Accuracy:  ±1.0°F (±0.6°C)
Resolution:  0.1°F (0.1°C)
Response time:  30 seconds (90% of final value, air velocity at 400 ft/min[2 m/s])
Type:  Thermistor
Relative Humidity:
Range:  5 to 95% RH
Accuracy:  ±3% RH (includes ±1% hysteresis.)
Resolution:  0.1% RH
Response Time:  20 seconds (for 63% of final value)
Sensor Type:  Thin-film capacitive
CO Sensor:
Range:  0 to 500 ppm
Accuracy:  ±3% of reading or 3 ppm whichever is greater [add ±0.5%/°C (0.28%/°F) away from calibration temperature]
Resolution:  1 ppm
Response Time:  <60 seconds to 90% of final value.
Sensor Type:  Electro-chemical
Instrument Temperature Range:
Operating (Electronics):  40 to 113°F (5 to 45°C)
Storage:  -4 to 146°F (-20 to 60°C)
Instrument Operating Conditions:
Altitude up to 4000 meters 
Relative humidity up to 80% RH, non-condensing
Pollution degree 1 in accordance with IEC 664
Transient over voltage category II
14 Appendix A
Data Storage Capabilities:
Range:  Logs up to 56,035 data points with key (4) measured parameters enabled, 38.9 days at 1-minute log intervals
Logging Interval:
Intervals:  1 second to 1 hour (user selectable)
Time Constant:
Intervals:  1 sec, 5 sec, 10 sec, 20 sec, 30 sec, (user selectable)
External Meter Dimensions:
3.8 in. × 8.3 in. × 2.1 in. (9.7 cm × 21.1 cm × 5.3 cm)
Meter Probe Dimensions:
Probe length: 7.0 in. (17.8 cm)
Probe diameter of tip: 0.75 in. (1.9 cm)
Meter Weight:
Weight with batteries: 0.8 lbs (0.36 kg)
Power Requirements:
Batteries:  Four AA-size alkaline or rechargeable
AC adapter:  6 VDC nominal, 300 mA [Q-TRAK monitor mates with 5.5 mm OD × 2.1 mm ID plug, center pin positive(+)]


  • IAQ investigations 
  • Industrial hygiene surveys 
  • Baseline trending and screening 
  • Building commissioning 
  • Tracking down emissions to their source (point source location)