Ahlborn ALMEMO 2390-5 Manual de servicio descargar pdf (Pagina 16)

Pressure Modules for Dynamic Pressure

Example:

Air velocity 50 m/s, air temperature 80 °C, atmospheric pressure 960 mbar.

The measured value must be multiplied with the correction value 1.123. The air

velocity is, therefore, 56.1 m/s.

ALMEMO

Pressure Connector:

For flow measurements the ALMEMO

sensor range provides plug-on pres-

sure connector FDA602-SxK and, as accessories, robust stainless steel or

nickel-plated brass Prandtl Pitot tubes. They are connected to the pressure

connector via hoses. Cylindrical probes can be used if the specific probe coeffi-

cient (1.7) is considered by programming the factor 1/



1,7

= 0.767.

The measuring variables, dynamic pressure and air velocity are programmed

within the ALMEMO

sensor connector on two measuring channels and can be

activated and displayed with the correct scaling and dimension by every AL-

MEMO

measuring instrument.

Pressure Connector FDA602-SxK Pitot tube FD9912

Designation Channel Meas. Range Dim Range Factor Exp

FDA602-S1K: 1st chan: 0.5...40.0 m/s ms L840 - -

2nd chan: ± 1250.0 Pa Pa Volt - 3

FDA602-S6K: 1st chan: 1.8...90.0 m/s ms L890 - -

2nd chan: ± 6800 Pa Pa Volt 0.4 4

3-5-16 ALMEMO

Sensors

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Ahlborn ALMEMO 2390-5 Manual de servicio Pagina 16