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FORCE DILATATION [2 records]
Record 1 - internal organization data 2005-07-28
Record 1, English
Record 1, Subject field(s)
- Physics
Record 1, Main entry term, English
- expansion force
1, record 1, English, expansion%20force
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
... the force exerted by an object, when heated, while it tries to increase in size. 2, record 1, English, - expansion%20force
Record 1, French
Record 1, Domaine(s)
- Physique
Record 1, Main entry term, French
- force de dilatation
1, record 1, French, force%20de%20dilatation
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Une toiture métallique est soumise au mouvement thermique dû à la dilatation et à la contraction de la tôle. [...] Pour que le solin de faîte puisse aussi s’adapter aux forces de dilatation et de contraction des tôles ancrées au niveau du bas du toit, il est nécessaire de calculer le mouvement thermique de ces dernières et de spécifier le solin de faîte en conséquence. 2, record 1, French, - force%20de%20dilatation
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2003-05-15
Record 2, English
Record 2, Subject field(s)
- Fire Warning Devices
Record 2, Main entry term, English
- pneumatic rate-of-rise spot detector
1, record 2, English, pneumatic%20rate%2Dof%2Drise%20spot%20detector
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
A pneumatic rate-of-rise spot detector consists of a small dome-shaped air chamber with a flexible metal diaphragm in the base. A small metering hole allows air to enter and exit the chamber during normal rise and fall of atmospheric temperature and barometric pressure. In the heat of a fire, however, the air within the chamber expands faster than it can escape through the metering hole. This expansion causes the pressure within the chamber to increase, forcing the metal diaphragm against contact points in the alarm circuit. An alarm signal to the system control unit results. This type of detector is most often combined in one unit that also has fixed-temperature capability. 1, record 2, English, - pneumatic%20rate%2Dof%2Drise%20spot%20detector
Record number: 2, Textual support number: 1 OBS
The spot detector monitors smaller areas than the line detector. 2, record 2, English, - pneumatic%20rate%2Dof%2Drise%20spot%20detector
Record 2, French
Record 2, Domaine(s)
- Alarme-incendie
Record 2, Main entry term, French
- détecteur ponctuel thermovélocimétrique pneumatique
1, record 2, French, d%C3%A9tecteur%20ponctuel%20thermov%C3%A9locim%C3%A9trique%20pneumatique
masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Le détecteur ponctuel thermovélocimétrique pneumatique est constitué d’une petite chambre aérothermique en forme de dôme et d’un diaphragme en métal flexible situé dans la base. Un petit trou permet à l'air d’entrer et de sortir de la chambre aérothermique lors des fluctuations normales de la température et de la pression barométrique. Toutefois, sous l'effet de la chaleur dégagée par un incendie, l'air qui se trouve dans la chambre aérothermique se dilate plus rapidement et ne peut pas s’échapper par le trou. Cette dilatation entraîne une augmentation de la pression à l'intérieur de la chambre aérothermique et force le diaphragme de métal à toucher les points de contact du circuit d’alarme. Un signal d’alarme est alors déclenché à l'unité de contrôle du système. Ce type de déclencheur est souvent combiné à un dispositif qui est également thermostatique. 1, record 2, French, - d%C3%A9tecteur%20ponctuel%20thermov%C3%A9locim%C3%A9trique%20pneumatique
Record 2, Spanish
Record 2, Textual support, Spanish
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