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PT9250 Software Interface
Using the PT9250 to assess for CO2 retrofits
Seven steps to CO2 retrofit assessments
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Sample AirTest Energy Analysis Software For CO2 Retrofits
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Model PT9250
Datalogging, CO2, cfm/person 0-10,000 ppm


  • service checkup tool
  • building studies / investigations
  • ventilation assessment
  • CO2 retrofit assessments
  • energy audits


Key Features

  • displays CO2, Temp and calculated cfm/person OA ventilation rate
  • internal 900 point data logger
  • includes PC software interface and cables
  • data easily exported to Excel or other spreadsheets
  • includes leatherette carrying case with belt clip
  • includes 110VAC plug-in charger
  • Now also available with LonWorks® communication capability as a LonMark® Certified product.


Model PT9250

Portable CO2 & Temp with Data Logging

  • Measures: 0-9,999 CO2
  • Temp Range: 32 to 120°F (0 to 50°C)
  • Outside air cfm/person ventilation rate calculation based on office type activity level
  • Accuracy: ± 30 ppm + 5% of reading
  • Power: 110 VAC plug-in
  • Gold plated optical sensing element with 4.7 inch path length for maximum stability & resolution
  • ISO-9001 manufactured for quality

Guide for Ventilation Assessment
Published: February 16, 2004 Last Updated: May 9, 2013