search

CASELLA CEL CEL-490 Manual de usuario Pagina 71

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 78
  • Tabla de contenidos
  • MARCADORES
    • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 70
CEL-63x Environmental Noise Meter
71 Casella CEL
9 Additional information
The following additional information relates to testing under IEC 61672-1:2002
section 9.3
1. Reference sound pressure level
The reference sound pressure level can be selected to 94 dB or 114 dB.
2. Reference level range
The CEL-63x instrument has a single measurement range of 0 dB to 140 dB.
3. Microphone reference point
The microphone reference point is the centre of the microphone‟s diaphragm.
The 0° reference direction is perpendicular to the microphone‟s diaphragm.
4. Acoustical frequency response testing
Table 3 shows the pressure to free-field correction data for the CEL-251
microphone used for periodic testing.
Table 3. Pressure to 0° free-field corrections
Frequency
Without wind
screen
With wind
screen
Without wind
screen
With wind
screen
Expanded
uncertainty of
corrections at 95 %
probability (k=2)
Bruel & Kjear 4226
calibrator
Bruel & Kjear UA0033
electrostatic actuator
Hz
dB
dB
dB
dB
dB
31.5
-0.1
-0.1
-0.1
-0.1
0.2
63
-0.2
-0.2
-0.2
-0.2
0.2
125
-0.2
-0.2
-0.2
-0.2
0.2
250
-0.2
-0.2
-0.2
-0.2
0.2
500
-0.2
-0.2
-0.2
-0.2
0.2
1000
0
0.1
0
0.1
0.2
2000
0.3
0.7
0.3
0.7
0.3
4000
0.7
1.4
0.8
1.5
0.3
8000
2.8
2.5
3.1
2.8
0.4
12500
5.3
4.1
6.2
5.0
0.6
16000
6.4
4.5
7.8
5.9
0.6
Vista de pagina 70
1 2 ... 66 67 68 69 70 71 72 73 74 75 76 77 78

Comentarios a estos manuales

Sin comentarios
Relacionado con productos y manuales para De medición, control y control CASELLA CEL CEL-490
De medición, control y control CASELLA CEL CEL-450 Información técnica   (77 paginas)
  • Centrecom ADURO Remote Processing Coorporation Disc Makers Copco
  • Husqvarna Herramientas Eléctricas Sennheiser No Cadco Calentadores De Alimentos LG Kits de coche Impex Gimnasio, Gimnasia Y Entrenamiento Con Pesas
  • Philips 224E5QSB/01 Shindaiwa SV212 Casio CDP-100 Jvc KD-SX947R Seagate Cheetah 10K.7 SCSI
  • Satel SATELLINE-3AS Guía de usuario Fujifilm 90 Manual de usuario Zanussi ZDP7202PZ Manual de usuario Pioneer DEH-2400UB Manual de usuario Eglo ARLENA Manual de usuario