Svantek SV 104BIS, Руководство пользователя

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16
SV 104BIS User Manual
Due to the unattended nature of noise dosimetry, it is important for workers to be fully engaged with the risk
assessment process. Motion sensing (No Motion Time) is particularly useful in cases of cheating to tamper
with the instrument or try to impact on the results, by for example instrument being taken off for the majority of
the time.
The addition of Bluetooth
®
wireless connectivity and the supporting mobile devices Assistant application
enables remote control and monitoring of the instrument’s status such as battery usage, memory capacity and
measurement progress without having to disturb the worker.
Noise profiled results can be easily transferred to the Supervisor or + software packages.
The noisiest times can be immediately seen in the graphical report and actions directed to the appropriate
area. This makes checking for different regulatory
bodies’
compliance and ensuring if hearing conservation
programs are needed definitely easier than ever before. SV 104BIS answers all the important questions such
as WHEN and HOW did the noise exposure appear? The data logging measurements can be started
immediately, or they can be pre-programmed in advance so that measurement run can begin and end
automatically at a pre-set start and end time without the need for any onsite supervision.
Additionally, SV 104BIS allows for custom voice note comments to be added before or after
the measurement run, and therefore this is the ideal instrument for the professional occupational hygienist to
use for all noise exposure studies.
1.5 M
EASUREMENT PROCEDURES
Preferably, when taking measurements, the noise dosimeter should be attached to the employee at the start
of a shift and collected at the end of the whole shift. In case a shorter period is sampled then care should be
taken to ensure that the result is representative of the full shift exposure. Shorter sampled periods require that
the sampler has a deep and full understanding of the expected working tasks during the shift and the duration
cycles of those tasks.
Before performing any noise measurements, ensure that employees selected for evaluation are operating
equipment or performing tasks under normal (representative) conditions, and emphasise the importance of
continuing to work in their usual manner (wearing the dosimeter should not interfere with normal duties).
Explain the purpose and procedures of sampling to the employee who will be wearing the dosimeter and the
importance of not touching, tapping or interfering with the microphone. Instruct the employee not to remove
the dosimeter unless absolutely necessary.
The general procedure for taking measurements could be as follows:
1. Check that the indicated instrument battery life is at least twice the time required for
the measuring period.
2. Check the instrument setup mode is appropriate and change if necessary.
3. Check the calibration of the instrument and adjust the settings if required.
4. Secure the instrument onto the shoulder of the employee selected for sampling. Refer to
the chapter with specific requirements regarding orientation of the microphone.
5. Start the recording session manually if it is not programmed for an automatic timed start.
6. At the end of the measurement period, stop the recording session, and remove the dosimeter
from the employee.
7.
Recheck the dosimeter’s calibration. If the instrument is not
within the calibration limits then the
results are invalid (usually if a discrepancy is found between two successive checks of more
than ± 0.5dB in the reference level, then the results of the measurements taken between the
two checks should be considered invalid and the cause investigated, and the measurement
repeated).
8. Follow your organisation
’s
specific procedure for personal noise exposure recordings analysis
9. Ensure the report is submitted to the appropriate person.
10. Distribute copies of noise exposure recordings to test participants, explain the results and
ensure that their hearing protection adequately protects against the recorded noise exposure
levels.