Svantek SVAN 971 - Setting the Exposure Time; Setting Alarm Thresholds for Dose Meter Functions

SVAN 971 User Manual
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LEQ detector selection
Following LEQ detectors are available in the instrument: Imp., Fast and Slow.
Dosimeter specific parameters can be set in accordance with the OSHA HC
(Occupational Safety and Health Administration - Hearing Conversation),
OSHA PEL (Occupational Safety and Health Administration – Permissible
Exposure Level) and ACGIH standards.
Criterion Level is a steady noise level permitted for a full eight-hour work shift:
60dB, 65dB, 70dB, 75dB, 80dB, 84dB, 85dB, 87dB, 90dB;
Threshold Level is a noise level limit below which the dosimeter does not
accumulate noise dose data: None, 60dB, 65dB, 70dB, 75dB, 80dB, 85dB,
90dB;
Exchange Rate is an amount by which the permitted sound level may increase if
the exposure time is halved: 2, 3, 4, 5, 6;
ULT Threshold Level (Upper Level Time) is a threshold level for calculation of
ULT results: 70dB ÷ 140dB;
PTC Threshold Level (Peak Threshold Counter) is a threshold level for
calculation of PTC results: 70dB ÷ 140dB.
12.4 SETTING THE EXPOSURE TIME – EXPOSURE TIME
The Exp. Time enables setting the desired value of the
workday exposure time that is used for calculation of the
LEPd results (see Appendix D).
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12.5 SETTING ALARM THRESHOLDS FOR DOSE METER FUNCTIONS – ALARM
The Alarm position is active only in the Dosimeter
function and enables programming the alarm thresholds
for three profiles (Thresh. P1 (2,3)).
Alarm is signalled by a diode flashing. To stop the diode
flashing, press any key.
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Thresholds can be set for next measurement results of
the Dosimeter in ranges:
DOSE: 1÷200%;
D_8h: 1÷200%;
PTC: 1÷1000;
ULT: 1÷60s.
If the Off value is selected, the alarm for the
measurement result is switched off.
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