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Real Time Analyzer with 1/3 Octave Band Filters

p33 real-time 1/3 octave analyzer

Using the Real-Time Analyzer

The P33 is a very powerful meter that can measure different parameters simultaneously and be configured in many different ways. However, once configured (usually the default settings are fine), it is extremely quick and easy to use.

The examples below are for specific applications and should give a good idea on how to use the meter. Once configured for other applications, actual use is pretty much the same, no matter what parameters you are measuring.

For most applications you need:

  • LAeq,t - usually shortened to Leq and shown on the meter's display as LAt
  • LCPeak - the C - weighted Peak, used for occupational noise measurement
  • L90 - Level exceeded for 90% of the time, for environmental noise surveys
  • Octave or 1/3 Octave Band Spectrum

Broadband Noise Measurements

start noise measurement

Starting the Measurement

Press the Record key to start a measurement. This key tells the meter to start and to automatically save the measurement.

If the time integration time T has been set then the meter will also store all the parameters (Leq, Max, Min, Ln, etc.) every T seconds.

During the measurement you can view different parameters and frequency weightings without interrupting it.

broadband noise measurement

stop the measurement

Finishing the Measurement

To end a measurement press the Stop key. The measurement will be stored and the meter returned to its stopped state, showing the results of the last measurement.

You can use the Screen key (shared with OK) to view the different parameters such as the Lns (L10, L90, etc.) and to display the time history graph of the noise.

noise parameters key

 

Octave and 1/3 Octave Band Measurements

rta mode key

Selecting Octave or 1/3 Octave Band Mode

By default the meter switches on in broadband mode. Switch to Octave Band by pressing the Mode key (shared with Cancel). Press the Mode key again to select 1/3 Octave Bands.

If you find that you make more frequency analysis measurements than broadband then you can set the meter to automatically start up in either Octave or 1/3 Octave band mode.


start octave band measurement

Starting the Measurement

Press the Record key to instruct the meter to start and to automatically save the measurement.

If an integration time T has been set then the meter will store the spectrum every T seconds too. It can also be set to store a spectrum every 1/8 of a second (125 ms).

frequency analysis display

stop the measurement

Finishing the Measurement

To end a measurement press the Stop key.

You can use the Screen key to view the levels in each band, displayed in decibels, but with so many numbers it is usually better to download the measurement to a computer for viewing graphically.

noise parameters key
P33-2
$5052.00
Type 2 Real Time Analyzer with 1/3 Octave Band Filters
1 week
P33-1
$5843.00
Type 1 Sound Meter with Real Time 1/3 Octaves
1 week
More pricing information

How to Buy

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Prices and Ordering

Order Code
Description
Purchase
Price (USD)
 
P33-2
Type 2 Real Time Analyzer with 1/3 Octave Band Filters
$5052.00
1 week
P33-2-K
Type 2 Measurement Kit with Pulsar 33-2, Calibrator and Software
$5574.00
1 week
P33-1
Type 1 Sound Meter with Real Time 1/3 Octaves
$5843.00
1 week
P33-1-K
Noise Measurement Kit with Pulsar 33, Calibrator and Software
$6521.00
1 week
Options
 
EFM33
Extended Frequency Module for P33
$1413.00
RT33
Reverberation Time Module for P33
$1277.00
P105
Class 1 Acoustic Calibrator. 1kHz, 94dB. For 1/2 inch microphones
$533.00
P106
Class 2 Sound Level Calibrator. 1kHz, 94dB. For 1/2 inch microphones
$376.00
UA237
90mm Windshield for 1/2 inch Microphone Capsules
$28.00
In stock
CRN-005
5m Microphone Extension Cable for Pulsar 30 and 33
$185.00
1 week
CRN-010
10m Microphone Extension Cable for Pulsar 30 and Pulsar 33
$403.00
1 week
CM270/1
Tripod Mount for Preamplifier
$55.00
1 week
CK250
Carrying Case for Sound Level Meter Kits
$136.00
In stock
CK200
Carrying Case for Sound Level Meter Kits with space for CT1 Tripod
$136.00
In stock
CT1
Lightweight Tripod
$75.00
In stock
CT3
Tripod
$170.00
In stock
PSU-P30
Power Supply for Pulsar 30 and 33
$104.00

Delivery Charges

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