Casella-cel CEL-424 Bedienungsanleitung Seite 3

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 16
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 2
Intrinsically safe versions are rated to EEx ia IIC T4 for use in
zones 0, 1 and 2 with IS Certificate Number - Ex97E2110X tested to
EN50020 (this corresponds to CENELEC apparatus group IIC, North
American grouping Class1).
3.2 CEL-420 Noise Dosimeter (& CEL-422/424/426)
The following features also apply equally to the CEL-420/422/424/426.
The CEL-420 series instruments are ideal for quick on-site surveys and
for monitoring personal noise exposure in accordance with European ISO
or USA OSHA and DOD stand-
ards. For dose measurement,
they are passive instruments
with settings that may be re-
viewed by key strokes, but
which can be selected only by
means of the dB10 (or dB12)
software. However, all sound
level measurement parame-
ters can be set from the key-
pad.
There are overlapping
measurement ranges: 50-120
& 70-140 dB, A & C RMS
weightings, Linear & C Peak
weightings, Fast, Slow &
Impulse time weightings, and energy exchange rates (Q) of 3, 4, 5 & 6.
In dose measurement mode, they display % dose, % dose projected for
an 8 hour period, peak level and measurement duration.
For those countries which are subject to European Union regula-
tions or the equivelent ISO standards, the instruments measure the daily
sound exposure level (L
Pa h according to IEC 1252, that is identi-
cal with the L
required by ISO 1999), while for USA OSHA regula-
tions they measure the Time Weighted Average Level (TWA).
When used as a sound level meter they display sound level,
maximum sound level, peak and time-averaged (L
or L ) sound
levels.
3.3 CEL-460 Logging Noise Dosimeter
(& CEL-462/464/466)
The following features also apply equally to the CEL-460/462/464/466.
The CEL-460 series instruments are recommended for detailed measure-
ments as they feature extended processing and memory functions.
There is an additional 30-100 dB measurement range that can be used
for environmental surveys, and automatic run timing facilities controlled
Table 2: Setups and Configuration Files
Seitenansicht 2
1 2 3 4 5 6 7 8 ... 15 16

Kommentare zu diesen Handbüchern

Keine Kommentare