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Last Updated Gas Type Documents Type
September 25, 2008   Fresh Air Ventilation Control With CO2  
February 19, 2008 Carbon Dioxide AirTest: Understanding The Parking Garage Opportunity
This document provides a review of the opportunity available in utilizing AirTest products to provide CO based ventilation control in enclosed parking facilities. It also describes the products offered by AirTest and selling tools that can be used to take advantage of this lucrative opportunity. To date approximately 75% of the enclosed parking garages, both new and existing are not using CO based ventilation systems.
Reference
February 19, 2008 Carbon Dioxide CO2 Based Outside Air Ventilation Systems
This is a datasheet on CO2 control using the AirTest product that is targeted at end users
 
February 19, 2008 Carbon Dioxide PT9250 / PT9450 Application Guide: Harness the Power of Portabl CO2 Measurement with the PT9250 Hand Held Monitor Application Note
February 19, 2008   Serial Communications / Protocol in AirTest Products Application Note
February 19, 2008   EE2 Protocol Application Note
February 19, 2008   EE03 Protocol Application Note
February 19, 2008   EE07 Protocol Application Note
February 19, 2008 Carbon Dioxide Accessing CO2 Control In Retrofits
This article documents the methodology used to perform a CO2 retrofit on a 30 story office building in Atlanta. The project resulted in $100,000 in annual savings and a payback in less than 2 years. Appeared in ASHRAE Journal, Nov 2002.
Article

February 19, 2008

Carbon Dioxide Real Time Ventilation Control
Discusses practical guidelines zone based ventilation control in new and retrofit applications. Provides an estimate of energy savings possible for various regions in the US. Appeared in HPAC Magazine, April 2002.
Article
February 19, 2008 Carbon Dioxide Proven Energy Savings With DCV Retrofits… Using CO2 to Vary Fresh Air Ventilation Rates and Save Energy
Documents three CO2 installation projects, how they were designed and the energy savings that resulted. Appeared in HPAC Magazine, February 2001.
Article
February 19, 2008 Carbon Dioxide Demand Control Ventilation Using CO2
This article summarizes the current state-of-the-art in CO2 ventilation control including a discussion of the technology used, its reliability and how it is best applied. Appeared in ASHRAE Journal 2001.
Article
February 19, 2008 Carbon Dioxide Making Sense Of Sensors… CO2 and VOC Sensors
Discusses the application of CO2 and so-called VOC or mixed gas sensors in buildings. The article explains the differences between these technologies and how they are best applied in buildings. The two sensors do have different applications. Appeared in Engineered Systems Magazine 1999.
Article
February 19, 2008 Carbon Dioxide ASHRAE Interpretation IC62-99-33
Interpretation Of ASHRAE Standard 62 "Ventilation for Acceptable Indoor Air Quality" which clarifies the use of CO2 in the standard using the Ventilation Rate Procedure.
Reference
February 19, 2008 Carbon Dioxide   CO2 And The Title 24 Energy Code In California
The current version of Title 24 requires CO2 based demand controlled ventilation in certain applications. This application note describes this requirement and references the appropriate sections of the code. It is important to note that CO2 is included in the code because of the significant energy savings possible.
Application Note
February 19, 2008 Carbon Dioxide FEMP CO2 Application Guide
An emergency technical guidance on CO2 based ventilation control in Federal Buildings.
Article
February 19, 2008 Carbon Dioxide Application Of CO2 Based Demand Controlled Ventilation & ASHRAE Standard 62 - Optimizing Energy Use & Ventilation
A good technical overview on how CO2 is used to control cfm/person ventilation rates in buildings. Appeared in ASHRAE Transactions 1998.
Technical Paper
February 19, 2008 Carbon Dioxide CO2 Product Overview
A 2 page overview of CO2 products available from AirTest.
Application Note
February 19, 2008 Carbon Dioxide The AirTest CO2 Self-Calibration Feature Explained
Explanation and background on the self-calibration feature used in TR92XX CO2 products from AirTest.
Application Note
February 19, 2008 Carbon Dioxide Length Matters
A overview of the unique optical sensor design used by the AirTest TR92XX that ensures an extended optical path that provides enhanced accuracy and long term stability.
Application Note
February 19, 2008 Carbon Dioxide The 7 Steps
Short explanation of the seven steps that can be used to assess the energy saving potential for retrofit of CO2 based ventilation control in an existing building.
Application Note
February 19, 2008 Carbon Dioxide PT9250 User Guide For CO2 Retrofit Assessments
A 12 page guide that shows how CO2 monitoring can be used to assess the potential for energy savings in existing buildings.
Application Note
February 19, 2008 Carbon Dioxide CO2 & Ventilation Control In Hospitality Areas With Smoking
Significant energy savings are possible when controlling ventilation in smoking areas based on CO2 concentrations.
Application Note
February 19, 2008 Humidity Moisture Control In Buildings… It's The Dew Point Stupid!
An explanation on the importance of dew point measurement for moisture control and a discussion of the problems related to relying on relative humidity.
Article
February 19, 2008 Humidity Overview Of Humidity & Temperature Sensors For HVAC Applications
A one page overview of humidity and temperature sensors available from Airtest for this application.
Application Note
February 19, 2008 Humidity Overview of Humidity Dew Point and & Temperature Sensors Available For High Precision & Industrial Applications
A one page overview of humidity and temperature sensors available from Airtest for this application.
Application Note
February 19, 2008 Humidity Overview Of Humidity & Temperature Sensors For HVAC Applications
A one page overview of humidity and temperature sensors available from Airtest for this application.
Application Note
February 19, 2008 Humidity Measurement Of Humidity Basics
A good technical overview on the physics governing humidity measurement.
Application Note
February 19, 2008 Humidity Humidity Calibration Basics
A review of the different methods of humidity calibration available.
Application Note
February 19, 2008 Humidity Humidity Sensor Elements
A background on the sensor elements used in sensors from E+E Elektronik.
Application Note
February 19, 2008 Humidity Technical Overview Of The Humor 20 Calibrator
Technical paper that explains the operating principal and design of the Humor 20, two pressure relative humidity calibrator that features a unprecedented stabilization time of less than 2 minutes.
Technical Paper
February 19, 2008 Gas Sensors Gases Characteristics Reference Guide
A quick on-line guide that can be used to look up characteristics of different gases typically of interest in commercial and light industrial applications. Links to NIOSH/OSHA data also included.
Application Note
February 19, 2008 Gas Sensors Typical Gas Sensing Applications
A on-line guide to many of the typical applications where gas sensors are applied along with design and installation guidelines.
Application Note
February 19, 2008 Gas Sensors Background On Carbon Monoxide Sensing In Parking Garages
A technical overview of the different sensor technologies available from AirTest for parking applications. This includes a comparison of electrochemical and solid state sensors.
Application Note
February 19, 2008 Gas Sensors Overview Of Lonworks® Gas Sensors Available From AirTest
A brief description of the Lonworks® communicating sensors available from AirTest with links to datasheets on all Lon products.
Application Note
February 19, 2008 Gas Sensors AirTest Control Panel Options For CO and Other Gas Sensors
A guide to the control panels and associated options available from AirTest.
Application Note
February 19, 2008 Gas Sensors Overview Of Gas Sensors And Controls Available From AirTest
A Two page chart that can be used to evaluate all gas sensors (non CO2) & controls available from AirTest.
Application Note
February 19, 2008 Air Velocity Background On Heated Thin Film Air Velocity Sensors
A technical overview on Thin Film sensors and their use in HVAC applications.
Application Note
February 19, 2008 Air Velocity An Overview Of Air Flow Switches and Transmitters Available From AirTest
A two page selection guide that compares the attributes of all airflow sensors available from AirTest.
Application Note
 
Published: February 16, 2004 Last Updated: September 25, 2008