Casella CEL CEL-414 - Manual (Page 49)

Table 4: Measurement range of CEL-493/3
Range Freq Display Primary Primary Pulse
Setting Wtg Range Linearity Linearity Range
Range* Range Peak
IEC 651 IEC 804 Value
IEC 804
Lo A 10-111.1 dB 27-91 dB 27-110 dB 86 dB
Linear 10-111.1 dB 45-91 dB 45-110 dB 68 dB
Med A 40-141.1 dB 43-121 dB 43-140 dB 100 dB
Linear 40-141.1 dB 50-121 dB 50-140 dB 93 dB
Hi A 50-151.1 dB 53-131 dB 53-150 dB 100 dB
Linear 50-151.1 dB 53-131 dB 53-150 dB 100 dB
Note*: The lower reading is quoted at +10 dB on noise floor.
The upper reading allows crest factor 10.
Table 3: Measurement ranges - All instruments except CEL-493/3)
Range Freq Display Primary Primary Primary Pulse
Setting Wtg Range Linearity Linearity- Linearity Range
Range* Range* Range Peak
IEC 651 IEC 651 IEC 804 Value
(Type 1) (Type 2) IEC 804
20 A 20-81,1 dB 27-61 dB 27-67 dB 27-81 dB 57 dB
Linear 20-81.1 dB 45-61 dB 45-67 dB 45-81 dB 39 dB
C 20-81.1 dB 31-61 dB 31-67 dB 31-81 dB 54 dB
50 A 50-111.1 dB 51-91 dB 51-97 dB 51-111 dB 63 dB
Linear 50-111.1 dB 51-91 dB 51-97 dB 51-111 dB 63 dB
C 50-111.1 dB 51-91 dB 51-97 dB 51-111 dB 63 dB
80 A 80-141.1 dB 81-121 dB 81-127 dB 81-141 dB 63 dB
Linear 80-141.1 dB 81-121 dB 81-127 dB 81-141 dB 63 dB
C 80-141.1 dB 81-121 dB 81-127 dB 81-141 dB 63 dB
Note*: The lower reading is quoted at +10 dB on noise floor.
The upper reading allows crest factor 10 for Type 1 instruments, and crest factor 5 for
Type 2 instruments.
General CEL Sound Level Meters Handbook - Page 45