CASELLA CEL CEL-490 Instrukcja Użytkownika Strona 75
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Oceniono. / 5. Na podstawie oceny klientów
CEL-63x Environmental Noise Meter
75 Casella CEL
without the wind screen, then you must set the calibration level to
113.88 dB. You must round this value to 113.9 dB.
o Calibrator level 113.98 dB
o Correction –0.1 dB
o Calibration level 113.88 dB rounded to 113.9 dB
If you use a Cirrus CR:515 calibrator and the certified output from the
calibrator is 94.04 dB, and you intend to use the instrument with the
wind screen fitted, then you must set the calibration level to 94.04 dB.
You must round this value to 94.0 dB.
o Calibrator level 94.04 dB
o Correction 0.0 dB
o Calibration level 94.04 dB, rounded to 94.0 dB
Refer to section 3.4 “Calibrating the instrument” on page 12 for instructions to
set the calibration level and calibrate the instrument.
9.2 Response characteristics
Table 7. Casella CEL-63X with CEL-251 Microphone Free Field response with and
without Wind Screen
Nominal
Frequency
Actual
Frequency
0 Degree
Free Field
Response
0 Degree
Free Field
Corrections
Effect of
Wind Screen
0 Degree
Free Field
Response
with wind
Screen
0 Degree
Free Field
Corrections
with Wind
Screen
Expanded
uncertainty
of
Corrections
(k=2)
Hz
Hz
dB
dB
dB
dB
dB
dB
250
251.19
0.0
0.0
0.0
0.0
0.0
0.16
315
316.23
-0.1
0.1
0.0
-0.1
0.1
0.16
400
398.11
0.1
-0.1
0.0
0.1
-0.1
0.16
500
501.19
0.1
-0.1
0.0
0.1
-0.1
0.16
630
630.96
0.0
0.0
0.1
0.1
-0.1
0.17
800
794.33
0.1
-0.1
0.1
0.2
-0.2
0.18
1000
1000.00
-0.1
0.1
0.1
0.0
0.0
0.19
1250
1258.92
0.0
0.0
0.2
0.2
-0.2
0.19
1600
1584.89
-0.4
0.4
0.3
-0.1
0.1
0.20
2000
1995.26
-0.2
0.2
0.4
0.2
-0.2
0.21
2240
2238.72
0.1
-0.1
0.4
0.5
-0.5
0.21
2500
2511.88
0.4
-0.4
0.5
0.9
-0.9
0.21
2800
2818.38
0.2
-0.2
0.5
0.7
-0.7
0.22
3150
3162.27
-0.3
0.3
0.6
0.3
-0.3
0.22
3550
3548.13
-0.9
0.9
0.7
-0.2
0.2
0.23
4000
3981.07
0.0
0.0
0.7
0.7
-0.7
0.23
4500
4466.83
0.0
0.0
0.7
0.7
-0.7
0.25
5000
5011.86
-0.1
0.1
0.6
0.5
-0.5
0.26
5600
5623.40
-0.4
0.4
0.5
0.1
-0.1
0.28
6300
6309.56
-0.7
0.7
0.2
-0.5
0.5
0.29
7100
7079.45
-0.1
0.1
-0.1
-0.2
0.2
0.32
8000
7943.27
-0.3
0.3
-0.3
-0.6
0.6
0.35
8500
8413.94
-0.4
0.4
-0.4
-0.8
0.8
0.38
9000
8912.49
-0.6
0.6
-0.5
-1.1
1.1
0.41
9500
9440.59
-0.8
0.8
-0.5
-1.3
1.3
0.44
- User Manual 1
- Contents 2
- 3 Casella CEL 3
- 1 Introduction 4
- 5 Casella CEL 5
- 1.2 Safety 6
- 7 Casella CEL 7
- 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
- 13 Casella CEL 13
- 14 Casella CEL 14
- Measurement view 15
- Fixed measurement view 16
- Measurement controls 17
- Key press 18
- Fixed duration 18
- 19 Casella CEL 19
- 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
- 29 Casella CEL 29
- Measurement run screens 30
- 31 Casella CEL 31
- Menu screens 32
- User settings 33
- 34 Casella CEL 34
- 35 Casella CEL 35
- Data sets 36
- 37 Casella CEL 37
- Meter Mode 38
- 39 Casella CEL 39
- Memory results 40
- View results 40
- Printing 41
- Print Report 41
- Print Screens 42
- Printer set-up 42
- USB connect mode 43
- 44 Casella CEL 44
- 4.4 Measurement views 45
- 46 Casella CEL 46
- Measurement functions 47
- 48 Casella CEL 48
- 49 Casella CEL 49
- 50 Casella CEL 50
- 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
- 55 Casella CEL 55
- 56 Casella CEL 56
- 5.18 Microphones 57
- 5.19 Calibration 57
- 5.20 Power supply 57
- 5.21 Internal clock 57
- 5.22 Languages 57
- 58 Casella CEL 58
- 5.29 Available data sets 59
- 60 Casella CEL 60
- 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
- 70 Casella CEL 70
- 9 Additional information 71
- 72 Casella CEL 72
- 73 Casella CEL 73
- Examples 74
- 77 Casella CEL 77
- 78 Casella CEL 78
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