Model 90 Quantifier Sound Level Meter
Page 7
Sounds Press Level with
integration time t (L
Ieqt
)
C
LCIeqt
-
-
Z
LZIeqt
-
-
Please note that only one Frequency Weighting can be selected at any time.
1:1 & 1:3 Octave Band Measurement Mode
In the 1:1 or 1:3 Octave Band Filter Mode, the MODEL 90 instrument provide a
sequential sweep through the filter bands over the measurement duration. In addition
to the frequency bands, the instruments also provide a measurement of the overall
L
Aeq
, L
Ceq
and L
Zeq
functions.
Function
Frequency
Weighting
Displayed as
Stored
Measurement
Applies to
Sound Level with Fast Time
Weighting
Z
LZF
No
1:1 & 1:3
Octave Bands
Equivalent Continuous Sound
Pressure Level with
integration time t
Z
LZeqt
Yes
1:1 & 1:3
Octave Bands
A
LAeqt
Yes
Broadband
C
LCeqt
Yes
Broadband
Z
LZeqt
Yes
Broadband
The 1:1 Octave Band Filters cover the following frequency bands: 31.5Hz to 16kHz
The 1:3 Octave Band Filters cover the following frequency bands: 25Hz to 16kHz
When the MO:800/6 Options is fitted, the 1:3 Octave Band Filters include the additional
20Hz and 20kHz 1:3 Octave Band Filters.
Options & Accessories
The MODEL 90 Series are also available with a range of options and accessories that
can enhance the performance and applications of the instrument. For full details, please
contact Pulsar Instruments Plc your local representative.
The most commonly used accessories are listed below.
Model 105 Class 1 Acoustic Calibrator
Model 106 Class 2 Acoustic Calibrator
K2
Hard Attache Case
WS90
Windshield
CP1
Carry Pouch
TR1
Tripod
DC80
USB Download Cable
MEC2
2 m Microphone Extension Cable for Instruments with removable preamp
MEC 5
5 m Microphone Extension Cable for Instruments with removable preamp
MEC10
10 m Microphone Extension Cable for Instruments with removable preamp
TM1
Preamplifier Tripod Mount
Outdoor Kits
WK1
Outdoor Weatherproof Kit with Lightweight Outdoor Microphone System
WK2
Outdoor Weatherproof Kit with Heavy Duty Outdoor Microphone System
Replacement Microphone Capsules
