If you have recently acquired a Type 2270 sound level meter and need to get up and running quickly, we have made this article for you.
Table of contents:
Calibrating your Sound Level Meter
To calibrate your sound level meter you can use Sound Calibrator Type 4231. It provides a stable sound pressure at 1 kHz and has minimal susceptibility to environmental factors. The procedure itself is relatively simple, and on the sound level meter, the procedure is referred to as Standard Calibration.
Performing an Acoustic Calibration:
While the sound level meter is searching for the calibration signal and the signal level is stabilizing, the ‘traffic light’ LEDs indicate a short green flash every second. When the level is stable, the traffic light indicates a steady green, and the signal is measured and used for calibration.
Once the calibration has been completed successfully, the traffic light indicates a short yellow flash every 5 seconds. The sensitivity is automatically calculated and displayed in a pop-up together with the deviation from the last calibration. Tap Yes to accept and use the new sensitivity and save it in the calibration history. Tap No to disregard the new calibration and continue with the old calibration.
If the calibration deviates more than ±1.5 dB from the initial calibration (microphones only), then the calibration is stopped without changing the calibration of the sound level meter. The traffic light will indicate a fast flashing red and an error description will appear in the status field.
SD Cards for Type 2270
Type 2270 only support industrial quality SD cards with up to 8 GB of storage space. We recommend Brüel & Kjær item number UL-1017, which is approved for use with Type 2270. These are the instructions for using an SD card:
Choosing a Measurement Template
On your Type 2270 you will have different measurement templates designed to help you make different kinds of measurements:
Templates are customizable, and it is possible to change settings in a template and/or make copies. Make a template for each job, and name them after that job.
How to apply A or C filters – frequency weighting
For some projects, you may need to use different frequency weightings. Here’s how to toggle between them.
From here, you can select 2 broadband weightings (RMS) and one broadband peak weighting. Depending on your template, you can also choose a weighting for spectra.
How to measure 1/1- or 1/3-octaves
For some projects, you may need to use 1/1- or 1/3-octave intervals. Here’s how to toggle between them.
How to use voice notes
Voice notes and written notes can add valuable information to your measurements. Voice notes are not captured through the main microphone, but through a small microphone at the rear of the sound level meter.
How to write a note:
Removing disturbances during the measurement
You can use the ’back-erase‘ button on your sound level meter to remove disturbances from your measurements. This can be very helpful if something disturbs you in the middle of a measurement.
For the Sound Level Meter and Frequency Analyzer templates do as follows:
In the Logging and Enhanced Logging templates do as follows:
More information on how to back-erase can be found in section 4.5.3 of your user manual.
Monitoring the measurement state of the sound level meter
Type 2270 sound level meters have colored LEDs at either side of the ’start/pause’ button. Often referred to as the ‘traffic lights’, this feature helps you understand the state of your device. The color of the light lets you know what’s going on, even at a distance, so you don’t need to stand right next to your device and watch the screen during the measurement. The sound level meter emits these different lights depending on its state:
How to upload data to your PC
After your measurement is finished you will want to upload your measurement data to your PC. Keeping track of your projects quickly becomes a central job and here our software can help.
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Be sure that you have installed Measurement Partner Suite (MPS) BZ-5503 on your PC and it is running before connecting any sound level meter or SD card. You will have received Measurement Partner Suite with your sound level meter and will be kept up-to-date when a new version is ready for download.
You can now transfer data either via a USB cable attached to Type 2270 or via the SD card:
You are now ready to start recording, measure, analyze, and create reports with your Type 2270. If you need any more information about how to use the sound level meter, check out the user manual (provided with the sound level meter or available online) – or give us a call.