Casella CEL CEL-360S - Manual (Page 16)

9. Technical Information
9.1 Specification
Dosimeter/Sound Exposure Meter Standards:
IEC 61252: BS EN 61252, ANSI S1.25 - 1992 for dosimeters and sound
exposure meters.
Electromagnetic and electrostatic compatibility:
The sound level at which this personal sound exposure meter conforms
to clause 15 of this standard is 85 dB. The personal sound exposure
meter was tested in Dose mode using 85 dB due to the duration of
testing.
The instrument has no additional connector points during normal mode
of operation.
N.B. When downloading data using cable no C6671, the meter
conforms to the requirements for EMC emissions and immunity as
specified in IEC 61000 - 61:1997, 61000 - 6 - 2:1999, 61000 - 6 - 3:1996,
and 61000 - 6 - 4: 1997.
The configuration for the normal mode of operation is measurement
set-up ISO 85 or ISO 90.
There is no degradation in performance or loss of functionality following
the application of electrostatic discharges.
The approved configuration for the reference orientation is with the
instrument secured to a nonmetallic backing material with the
microphone cable secured in a horizontal figure of eight configuration
starting approximately 10 cm above the instrument. The figure of eight
is constructed of four even folds of the microphone cable 14 cm across.
The figure of eight is then secured at each end and in the centre. The
microphone housing is then secured approximately 10 cm above the
centre of the figure of eight configuration. The front of the instrument is
facing the principal direction of an emitter or receiver of radio-frequency
electromagnetic fields.
All settings and orientations of the instrument have similar radio-
frequency emissions. These radio-frequency emissions are within the
specified limits of this standard.
All modes of operation and connecting device configurations have
similar immunity to power and radio frequency fields.
Sound Level Meter/Integrating Sound Level Meter Standards:
ANSI S1.4 - 1983 Type S(1) for sound level meters,
IEC 60651 - 1979 : Type 2
I for impulse sound level meters,
IEC 60804 - 2000 : Type 2 for integrating sound level meters.
ANSI S1.43 - 1997 for integrating sound level meters.
The sound level at which the sound level meter conforms to
specifications of clause 12 of IEC 60651 is 74 dB.
The instrument has no additional connector points during normal mode
of operation.
The configuration for the normal mode of operation is specified with the
microphone connected via the standard preamplifier, Frequency
weighting: A-weighted, Sound Pressure level, Time Constant: Fast,
Measurement Range: 70 - 140 dB.
Page 16 - CEL-320/360 Getting Started