TheAlnor HVAC Handbook: A Practical Guide To Performance Measurements in Mechanical Heating, Ventilating, and Air Conditioning Systemsis organized to be beneficial for field service and training, says the company. One section describes the types of measurement instruments used in the HVAC industry and the key features or advantages of each. The "Measurement Basics" section covers HVAC system performance, testing and certification, thermal comfort, and indoor air quality. Appendices include "Performing a Duct Traverse," "Capture Hood Flow Resistance," "Characterizing a Capture Hood to an Outlet Using a Correction Factor," "Determining the Percentage of Outside Air Using Either Temperature or CO2 Measurements," "Density Correction," "Common HVAC Blueprint Symbols," and "Useful Calculations."

Alnor Products/TSI Inc., 500 Cardigan Rd., Shoreview, MN 55126; 651-490-2811 or 800-874-2811; 651-490-3880 (fax); customerservice@alnor.com; www.alnor.com.

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