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14
FCD’s • Control Dampers – Opposed blade dampers

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Page 1: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

FCD’s

• Control Dampers

– Opposed blade dampers

Page 2: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

– Parallel blade dampers

Page 3: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift
Page 4: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

– Butterfly dampers

Page 5: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

FCD’S

– Globe valves

Page 6: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

– Ball valves

Page 7: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

– Butterfly valves

Page 8: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

Flow characterisitics

• Linear valve – 40%

open 40% flow

• Equal % - best at 50 –

100%, HW and CW

• Quick opening – two

position

Page 9: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift
Page 10: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

Sensors

• Temperature

• Humidity

• CO

• Pressure

• Flow

• ……………

Page 11: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

Temperature

• Thermistor

– Non linear

– NTC

– Ceramic semiconductor

Page 12: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift
Page 13: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

Temperature

• RTD’s

– Resistance temperature dectors

– Thin film of pure metal

– Relatively linear

– About .18 degree drift per year

– High cost

Page 14: FCD’s - Quia€“NTC –Ceramic semiconductor Temperature •RTD’s –Resistance temperature dectors –Thin film of pure metal –Relatively linear –About .18 degree drift

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