Casella CEL CEL-440 - Manual (Page 55)

5. SPECIFICATION
5.1 CEL-440
Instrument Standards:
Sound Level Meter to IEC 60651: 1979 Type 1 I & Type 2 I as
relevant.
Integrating Averaging Sound Level Meter to IEC 60804:
2000 Type 1 & Type 2 as relevant.
Sound Level Meter to ANSI S1.4: 1997 Type S(1) & Type S(2)
as relevant.
IEC 60651 and IEC 60804 Standards:
The sound level at which the sound level meter conforms to
specifications of clause 12 of IEC 60651 is 74 dB.
The tests as specified in 12.5.2.6 and 12.5.4.4 of IEC 60651
were carried out with the following cables and accessories:
Instrument Cable
CEL-440 CEL-480 C6620/2
CEL-440 CEL-480 C6623/2
CEL-440 CEL-480 C6621/2
The configuration for the normal mode of operation is specified
with the microphone connected via the standard preamplifier and
the following instrument parameters selected.
Frequency weighting: A-weighted sound pressure level,
Time Constant: Fast,
Measurement Range: 70-140 dB.
Electromagnetic and Electrostatic compatibility:
There is no degradation in performance or loss of functionality
following the application of electrostatic discharges.
The approved configuration for reference orientation as viewed
by the operator is with the instrument in a horizontal position
facing the noise source where the receiver of the
electromagnetic field replaces the noise source.
CEL-440/480 Operators Handbook - Page 55
Specification