14
Duct pressure switches and sensors
Installing differential pressure probes for air
A - Control a filter (clogging)
B - Control a fan (upstream/downstream)
C - Measurement of difference in pressure between two ducts
D - Measurement of difference in pressure between two rooms or
of inside of duct and outside
Basic principles
Measuring static pressure(i.e. pressure exerted
by air on pipe walls)
Measuring dinamic pressure
Key
y Kg/m
3
, specific weight of air
m/s, air speed
g 9.81
m/s
2
gravity acceleration
Pd
mm C.A., dynamic pressure
Measuring total pressure
Summary of Contents for P91A
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Page 53: ...LME73 000Ax PME73 831AxBC LME73 831AxBC Service instruction manual M12921CB Rel 1 2 02 2016...
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Page 76: ...Note Specifications and data subject to change Errors and omissions excepted...
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Page 91: ...RWF50 2x RWF50 3x User manual M12922CB Rel 1 0 07 2012...
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Page 107: ...Modulador KM3 MANUAL DE USUARIO M12927FA Rel 1 0 10 2020...
Page 108: ...M12927FA 2 MONTAJE...
Page 124: ...KM3 Modulator USER MANUAL M12927CA Rel 1 0 10 2020...
Page 125: ...M12927CA MOUNTING 2...
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