Cel-63x environmental & occupational noise meter – Casella CEL CEL-63X User Manual
Page 81
CEL-63x Environmental & Occupational Noise Meter
81
Casella CEL
Table 8.
CEL-63X with CEL-251 Microphone directional response (dB) relative to
zero degrees
(Orientation of CEL-63X - Display at 0 degrees relative to ground)
Nominal
Frequency
(Hz)
Actual
Frequency
(Hz)
0
Deg
10
Deg
20
Deg
30
Deg
40
Deg
50
Deg
60
Deg
70
Deg
80
Deg
90
Deg
100
Deg
110
Deg
120
Deg
130
Deg
140
Deg
150
Deg
250
250.32
0.03
0.01
0.00
-0.01
-0.02
-0.03
-0.04
-0.02
-0.03
-0.19
-0.14
-0.11
-0.09
-0.18
-0.19
-0.11
500
500.65
0.02
0.02
0.09
0.12
0.10
0.12
0.12
0.11
0.10
0.09
0.03
-0.04
-0.07
-0.09
-0.07
-0.06
630
629.85
0.01
0.02
0.12
0.17
0.16
0.18
0.19
0.18
0.17
0.20
0.13
0.03
-0.04
-0.04
-0.02
-0.02
800
799.42
0.01
0.01
0.10
0.15
0.14
0.17
0.18
0.19
0.20
0.23
0.19
0.09
-0.02
-0.04
-0.03
-0.02
1000
1001.29
0.01
0.01
-0.03
-0.02
-0.02
-0.01
0.01
0.02
0.06
0.08
0.11
0.05
-0.08
-0.17
-0.19
-0.14
1250
1248.93
0.01
0.02
-0.15
-0.22
-0.25
-0.26
-0.27
-0.26
-0.21
-0.18
-0.09
-0.06
-0.18
-0.34
-0.42
-0.37
1600
1598.84
0.01
0.03
-0.02
-0.11
-0.22
-0.32
-0.39
-0.45
-0.44
-0.40
-0.33
-0.17
-0.17
-0.36
-0.57
-0.55
2000
1999.90
0.02
0.04
0.14
0.13
0.03
-0.11
-0.27
-0.45
-0.58
-0.61
-0.59
-0.47
0.25
-0.31
-0.63
-0.74
2240
2239.45
0.02
0.03
0.12
0.17
0.16
0.07
-0.08
-0.30
-0.51
-0.62
-0.60
-0.58
-0.31
-0.19
-0.52
-0.76
2500
2500.54
0.02
0.02
-0.09
-0.05
0.05
0.09
0.02
-0.18
-0.42
-0.67
-0.59
-0.67
-0.48
-0.16
-0.44
-0.83
2800
2799.32
0.02
0.00
-0.30
-0.44
-0.40
-0.26
-0.14
-0.21
-0.44
-0.83
-0.79
-0.77
-0.82
-0.39
-0.54
-1.07
3150
3149.23
0.01
0.00
-0.01
0.25
-0.61
-0.72
-0.53
-0.37
-0.47
-0.83
-1.23
-0.84
-1.08
-0.76
-0.68
-1.36
3550
3550.29
0.01
0.03
0.11
0.10
-0.24
-0.81
-1.14
-0.98
-0.72
-0.95
-1.73
-1.36
-1.27
-1.26
-0.91
-1.63
4000
3999.79
0.01
0.00
-0.29
-0.28
-0.07
-0.11
-0.63
-1.19
-0.92
-0.80
-1.22
-1.85
-1.01
-1.41
-0.81
-1.36
4500
4500.44
0.01
-0.04
0.04
-0.24
-0.58
-0.49
-0.44
-0.99
-1.55
-1.09
-1.53
-2.05
-1.55
-1.54
-1.40
-1.60
5000
5001.09
0.02
0.00
-0.34
-0.51
-0.83
-1.19
-1.18
-1.23
-2.02
-2.10
-1.81
-2.37
-2.82
-1.87
-2.15
-2.05
5600
5601.32
0.01
-0.02
0.17
0.04
-0.29
-0.70
-1.05
-0.99
-1.29
-2.17
-1.68
-2.33
-2.62
-1.65
-2.35
-1.49
6300
6301.15
0.01
-0.02
-0.41
-0.77
-0.89
-0.92
-1.52
-2.12
-1.81
-2.64
-2.57
-2.43
-3.24
-3.39
-2.89
-2.38
7100
7100.57
0.01
-0.05
-0.43
-0.49
-0.88
-1.68
-1.54
-2.21
-2.75
-2.59
-3.83
-3.28
-4.13
-3.48
-2.50
-3.32
8000
7999.58
0.01
-0.01
-0.15
-0.48
-1.14
-1.43
-2.27
-2.21
-3.28
-3.27
-4.64
-3.44
-4.15
-4.19
-3.55
-4.00
8500
8500.23
0.01
-0.07
-0.36
-0.60
-1.00
-1.47
-1.91
-2.71
-2.70
-3.69
-4.22
-4.26
-4.55
-5.33
-4.10
-3.73
9000
9000.88
0.01
-0.05
-0.30
-0.79
-1.36
-2.00
-2.27
-3.38
-3.08
-5.09
-4.17
-5.59
-4.78
-5.64
-5.26
-4.29
9500
9498.83
0.00
-0.06
-0.30
-0.62
-1.14
-1.80
-2.27
-2.82
-3.48
-4.53
-4.04
-5.64
-4.19
-5.88
-4.93
-4.62
10000
9999.48
0.01
-0.11
-0.45
-0.90
-1.58
-2.11
-3.06
-3.23
-4.56
-4.65
-4.72
-6.91
-4.85
-6.39
-5.05
-5.12
10600
10599.72
0.00
-0.05
-0.25
-0.72
-1.35
-2.09
-2.58
-3.33
-4.59
-4.18
-5.10
-6.67
-5.47
-6.65
-5.87
-4.89
11200
11199.96
-0.02
-0.13
-0.61
-1.02
-1.77
-2.61
-3.23
-4.43
-4.53
-5.26
-7.01
-6.81
-6.83
-7.04
-6.50
-5.69
11800
11800.20
-0.02
-0.12
-0.25
-0.75
-1.55
-2.27
-3.08
-3.72
-4.36
-5.78
-7.44
-6.20
-6.97
-7.58
-7.27
-6.39
12500
12500.02
0.00
-0.13
-0.65
-1.24
-2.02
-2.95
-3.81
-4.56
-5.76
-7.34
-7.99
-6.91
-8.86
-7.51
-8.91
-7.87
Maximum expanded uncertainty of above data with 95% probability (k=2)
500 Hz to 1 kHz
0.3 dB
>1 kHz to 4 kHz
0.5 dB
>4 kHz to 8 kHz
1.0 dB
>8 kHz to 12.5 kHz
1.5 dB