Buchi ELS Detector C-650 Manual de usuario descargar pdf (Pagina 30)

C-650 Operation Manual, Version B

5 Putting into operation

Noise Filter/Pressure unit screen

Filter: 1 s

Press Unit: bar

Fig 5.18: Noise Filter/Pressure unit screen

The Filter/Pressure Unit screen is used to indicate if digital ﬁltering is desired for the signal data

(improves signal-to-noise ratio) and the desired units for the pressure display.

When the screen is presented, the cursor is on the Filter ﬁeld. By pressing or keys, you

change the ﬁltering strength within the following range:

“NO”: no ﬁltering.

0.5s: 0.5 second moving average ﬁltering.

1…10s: 1 to 10 seconds moving average ﬁltering.

NOTE

For better results, the digital Filter should be used unless the peak(s) of interest are very poorly

resolved (e.g. when Rs<1.5).

Default value is 1sec., corresponding to a peak width of approximately 2sec. at half-height. User

manual section 6.4.5 details Filter optimization.

If you have changed the value, press to validate it before you press the button to access

the Press Unit line. The pressure unit line allows for the selection of kPa, bar or psi for pressure

units, the desired selection is made via the or key, and validated by the key. When you

press the button, the LED screen (Fig 5.19) will be displayed.

LED screen

LED: ON #H

Time elapsed: xx h

Fig 5.19: LED screen

The LED screen is used to turn the light source On/Off and is equivalent to the Light Source but-

ton on the control panel. Use the button followed by the button to turn the LED on and the

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Buchi ELS Detector C-650 Manual de usuario Pagina 30