Document repE6QeOkLNqnzp44epnJroVJ

Air Conditioning l?SemS Parks-Cramer Company Fitchburg, Mass. Charlotte, N. C. CERTIFIED CLIMATE Complete Air Conditioning Systems including Hu midifying or Dehumidifying, Cooling by Evaporation or Refrigeration, Ventilating, Filtering, Air Washing; with Automatic Control of Humidity, Temperature and Air Change. Central Station Air Conditioning A complete system for conditioning air, with positive circu lation and controlled ventilation. One or more air washer and fan units. High humidifying and evaporative cooling capacity. Heating, filtering, and refrigerated cooling optional. Ducts with adjustable outletB distribute conditioned air uniformly. Slight air pressure also improves uniformity. Centralized maintenance. Used with or without booster humidification. Under complete automatic control. Exclusive multi-speed fan motor control available. Central Station Air Washer Units. Nozzles and Self-Cleaning Tank Screens for Central Station Air Washers. Laboratory Air Conditioning An essential of a good testing laboratory is adequate and de pendable air conditioning. Accuracy in testing is maintained only when samples and testing equipment are free from fluctu ations in both temperature and humidity. A vertical or hori zontal unit is located within or adjacent to the laboratory. Includes equipment for heating, humidifying, dehumidifying, refrigeration, circulation, and adjustable recorder-controller. Heat by steam or electricity. 1114 Air Conditioning Central Systems Parks-Cramer Company Fitchburg, Mass. Charlotte, N. C. Automatic Airchanger An improved syBtem of forced air change and distribution used with a direct humidifying system. Insures fixed humidity and maximum evaporative cooling by controlling amount of air change and operation of humidifiers by humidity and temperature Psychrostat. Designed for either complete new in stallations or for supplementing existing direct humidifying equipment. Gradumatic Humidifying System New and advanced type of direct humidifying system for use alone, with Airchangers, or as booster for Central Station system. Air and water under pressure; water pressure always less than air. Safe. Economical. Few component parts, easy to take apart and reassemble. Proper operation assured without testing. No adjustment re quired. Both air and water ports cleaned automatically. Heads operate continuously, evaporative output being varied gradually and automatically by Certified Climate Psychrostat to suit requirements for constant humidity at all times. Certified Climate Psychrostat Improved model more sensitive and accurate than ever before. Rugged and reliable. Use of the wet and dry bulb principle permits Psychrostat to perform the many and varied tasks in the field of humidity and temperature control which con tribute to the success of Certified Climate systems. The Pettifogger (not illustrated) A compact centrifugal humidifier, with fan, for offices, storerooms, experimental rooms, hospitals, or other isolated departments. Self-contained in lacquered copper casing. Easily connected to water and electrical supplies. Automatic control. Adjust able capacity. Neutralizes drying effect of heating. 1115