Casella CEL CEL-278 - Manual (Page 6)

The CEL-278/2 may be used with other types of CEL instrumentation,
including the following.
CEL-160 Graphic Level Recorder (not "C" version),
CEL-262 Environmental Noise Analyzer (Type 1).
The following other earlier types of CEL sound level meter may also be used,
although special procedures and cables may be required, please consult
your local CEL representative for further details.
CEL-193
Precision Integrating Impulse Sound Level Meter (Type 1I),
CEL-175
Precision Integrating Impulse Sound Level Meter (Type 1I),
CEL-187 Precision Integrating Sound Level Meter (Type 1),
CEL-162 series Environmental Noise Analyzers.
When used with any of these measuring instruments, octave band frequency
analysis of noise and vibration can be performed with manual selection of the
centre frequencies. Alternatively, the combination of Sound Level Meter and
Filter Set may also be connected to an external device such as a CEL-160
Level Recorder or CEL-238A Secondary Processor that can step the octave
bands by remote control while recording the level in each band.
Refer to Chapter 5 for detailed Instructions for operating the Filter Set, and to
Chapter 3 for a technical description of its functions. Please turn to Chapter 4
to prepare the instrument for use.
Page 6 CEL-278/2 Handbook CEL Instruments Ltd