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13:07 May 15, 2003
English to French translations [Non-PRO] Tech/Engineering / ventilation
GILOU France Local time: 12:21 Native speaker of: French PRO pts in pair: 73452
18 hrs confidence:
capteur/détecteur de circulation/débit d'air
Explanation: capteur/détecteur de circulation/débit d'air
Air Proving Switches
Two types of air proving switches are available for MetalAire®Electric Heaters. An air static switch senses the existence of air flow across the heating elements through a pitot tube placed in the air stream facing in the direction of air flow. If air flow stops or falls below a minimum of .05±.02static pressure, contact is broken and the heater is de-energized. For applications where sufficient static pressure does not exist at the heating coil, a fan interlock relay may be selected as the air proving switch. It is wired to oper-ate when the fan motor is operating. The fan motor voltage or the fan motor control voltage must be specified when the fan interlock relay is ordered for the heater. Both types of air proving switches are UL®approved for electric heater applications.