11.11 Indications & Warnings Flashcards
how is the conditon of a hydraulic system monitored?
sensors in the system
what are the modes of pump operation?
- ON
- OFF
- automatic
what are the two subsets of pressure sensors?
- pressure switches
- pressure transducers
what does a pressure switch do ?
measures pressure in a system
why might a pressure switch be used?
in applications where safety is paramount
whar do pressure transducers do?
sample and record the pressure in a system
what are the most common types of pressure transducer ?
- strain gauge
- thick- thin
what is important to remember when reading a pressure gauge on an accumulator ?
the gauges are not calibrated and should be used for quick reference only
how can an accurate pressure reading be gained when charging an accumulator ?
a calibrated gauge can be applied between the accumulator and the nitrogen tank
what sort of mechanical pressure-sensing devices can be used in an aircraft?
bourdon tubes, diaphrams, aneroids and bellows
what systems can a bourdon tube be used ?
liquid and pneumatic pressure measurements in systems
when a hydraulic system’s pressure is low, where will an indication message be sent to ?
cautions or warnings will be sent to the flight deck’s EICAS system
