BC Biomedical USP-100A Instrukcja Użytkownika Pobierz pdf (Strona 9)

recommended to use an ambient testing temperature of 24.0 ±3.0 °C (75.2 ±5.4 °F).

Sonic energy agitates the water surface through heating and scattering. The time

duration of each test should be limited to a few minutes. Prolonged testing, particularly

at higher power levels, will show visible signs of air bubbles on the transducer, target,

and the absorbing rubber surface.

Transducer Wetting and Placement

To avoid introducing air into the degassed water, insert the transducer at a 45° angle,

then position so it is facing the target. Verify that the transducer surface is uniformly

wetted, if not, wipe the surface clean using your finger. The transducer should be

pointed toward and center-positioned directly above the cone target. Small

measurement variations will occur due to placement of the transducer. Try various

positions above the target to minimize the magnitude of error due to positioning.

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BC Biomedical USP-100A Instrukcja Użytkownika Strona 9