B&K 2250 Light Manual de usuario descargar pdf (Pagina 206)

194

Hand-held Analyzer Types 2250 and 2270 – User Manual

17.4 Setting up the Analyzer for Building Vibration

Measurements

1) Connect the accelerometer to the rear socket. Brüel & Kjær recommends Accelerometer

Type 8344 for low-level building vibration measurements. If it is your first time to use the

microphone, it needs to be created in the transducer database (see section 5.8) and

calibrated (see section 5.3).

2) Select the Sound Level Meter, Frequency Analyzer, Logging, Logging SLM, Enh. Logging

or Enh. Logging SLM project template.

The project template is displayed at the top of the screen, if it does not display the correct

template tap the Project Template Bar at the top of the screen and select the correct

template from the drop-down menu. (See section 3.3.1 for more details on templates.)

3) Tap the Main Menu icon and select Setup.

4) Select Input > Transducer and select appropriate accelerometer.

5) Select Frequency Settings > Low Frequency Option and select On.

This will enable extra options for the Low Frequency parameter (Frequency Analyzer

module only) and for the frequency weighting parameters (Fig.17.5).

Fig.17.5

Example of additional

parameters with the

Low Frequency Option

parameter set to On

6) Set Low Frequency to Extended.

7) Set Broadband (excl. Peak) to Linear,Wm (simultaneous measurement with the two

frequency weightings Linear and Wm).

8) Set Broadband Peak to Wm.

9) Set Spectrum Weighting parameter to Linear or Wm, as required.

1 2 ... 201 202 203 204 205 206 207 208 209 210 211 ... 331 332

Sin comentarios

B&K 2250 Light Manual de usuario Pagina 206