CASELLA CEL CEL-490 Bedienungsanleitung PDF herunterladen (Seite 51)

CEL-63x Environmental Noise Meter

51 Casella CEL

period and produce an average level that assumes the highest level was

present for the entire 3 or 5 second period.

Statistical values

The statistical functions L

, L

and L

show the sound

pressure levels that are exceeded for 10 %, 50 %, 90 % and 95 %

of the measurement period respectively. For example, the

measurement L

is the level exceeded for 10 % of the

measurement time and L

is the level exceeded for 90 % of the

measurement time.

The CEL-63x instrument also provides a user-defined, variable statistical

measurement.

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User Manual 1
Contents 2
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1 Introduction 4
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1.2 Safety 6
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2 Features 8
3 Quick reference 9
Mains DC supply 10
USB supply 10
Battery condition indicator 10
3.2 Using the controls 11
Soft keys 11
Navigation keys 11
Run/Stop key 11
3.3 Set the time and date 12
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Measurement view 15
Fixed measurement view 16
Measurement controls 17
Key press 18
Fixed duration 18
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Measurement data sets 20
Profile recording 21
Periodic measurements 21
Synchronise time 22
4 Detailed description 23
4.3 Screen groups 24
Switch-on 25
Measurement stop screen 26
Octave and 1/3-Octaves 27
Overload 27
Calibration mode 28
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Measurement run screens 30
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Menu screens 32
User settings 33
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Data sets 36
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Meter Mode 38
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Memory results 40
View results 40
Printing 41
Print Report 41
Print Screens 42
Printer set-up 42
USB connect mode 43
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4.4 Measurement views 45
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Measurement functions 47
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Statistical values 51
4.5 Connections 52
Power input port 52
Mini B USB port 52
AC and DC output port 53
5 Specifications 54
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5.18 Microphones 57
5.19 Calibration 57
5.20 Power supply 57
5.21 Internal clock 57
5.22 Languages 57
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5.29 Available data sets 59
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C) Profile Results 61
D) Marker Event Results 62
Measurement run duration 62
5.30 Physical 62
6 Care and maintenance 63
7.1 Inspection and test 64
7.3 Repairs 65
7.4 User servicing 66
8 Glossary 67
Example 68
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9 Additional information 71
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Examples 74
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