B&K 2250 Light Manual do Utilizador descarregar pdf (Página 259)

APPENDIX A

Setup Parameters

247

Criterion Level 0 to 140 dB Criterion Level is the sound level allowed for

an 8-hour period and would yield a 100%

dose.

The criterion level must be set according to

the legislation with which you will have to

comply.

Used for calculation of Dose, ProjDose,

DoseUQ, ProjDoseUQ.

U = Time Weighting for Lav: F or S

Q = Exchange Rate for Lav: 4, 5 or 6 dB

PeaksOver Level 0 to 200 dB Any peak levels that exceed the level set here

will be counted.

Used for calculation of #XPeaks(>NNNdB)

X = A, B, C, Z or G, set by Setup > Frequency

Settings > BB Peak, NNN is the PeaksOver

Level

Note: Two other peak counters are preset to

count peaks over 135 dB and 137 dB,

respectively

Exchange Rate for Lav 4 dB

5dB

6dB

The increase in noise level that corresponds

to a doubling of the noise level is determined

by Exchange Rate for Lav.

Set Exchange Rate for Lav as required by

your local standards.

Used for calculation of LavUQ, TWA, TWA

DoseUQ, ProjDoseUQ.

U = Time Weighting for Lav: F or S

Q = Exchange Rate for Lav: 4, 5 or 6 dB

Note: TWA and TWA

requires U = S and

Q = 5

Time Weighting for Lav F

Lav will be time weighted in accordance with

this parameter.

Used for calculation of LavUQ, TWA, TWA

DoseUQ, ProjDoseUQ.

U = Time Weighting for Lav: F or S

Q = Exchange Rate for Lav: 4, 5 or 6 dB

Note: TWA and TWA

requires U = S

and Q = 5

*. Not available for Reverberation Time Software BZ-7227.

Table A.16 (Cont.) Occupational Health Parameters

Parameter Values Comment

1 2 ... 254 255 256 257 258 259 260 261 262 263 264 ... 331 332

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