TheAlnor HVAC Handbook: A Practical Guide to Performance Measurements in Mechanical Heating, Ventilating, and Air Conditioning Systemsis now available. This free book offers useful information for anyone involved in maximizing HVAC performance. It is organized for both field service and training. The handbook includes a section that describes the various types of measurement instrumentation used in the industry and the key features or advantages of each. The "Measurement Basics" section is a good training aid for new technicians because it covers these key applications: HVAC system performance, testing and certification, and thermal comfort and IAQ. Appendices cover topics such as "Performing a Duct Traverse," "Determining the Percentage of Outside Air Using Either Temperature or CO2 Measurements," "Density Correction," and "Useful Calculations."

Alnor Products/TSI Inc., 500 Cardigan Rd., Shoreview, MN 55126; 651-490-2811 or 800-424-7427; 651-490-3880 (fax);;

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