Assessor 81A & 82A Noise Exposure Meters

It’s the ideal instrument if you are looking for a Sound Level Meter for occupational and industrial noise that can estimate noise exposure over a longer period.

  • With the Model 81A (Class 1), taking accurate industrial noise measurements has never been easier
  • Designed with ease of use in mind. Only 4 buttons, each with one labelled function.
  • Just switch on the Model 81A and it starts measuring the parameters you need immediately including estimated noise exposure
  • Software upgrade option available
  • Non-Data logging option available.

This simple noise exposure meter is exactly what you need – no more, no less.

Description

Assessor 81A Noise Exposure Meter (Class 1)

When using the Assessor Model 81A for making a measurement for industrial noise it couldn’t be easier; simply switch the unit on and the instrument starts measuring. To complete the measurement, press the ‘Stop’ button and everything needed for your assessment is displayed on one screen.

The ‘A’ weighted Leq or average noise level is displayed along with the ‘C’ weighted Peak value, which is used for the assessment of impulsive noise sources. Please refer to our Acoustic Glossary for information on these terms.

The Model 81A integrating sound level meter can be supplied as non-data logging if manual reporting is your preferred method. For those preferring the benefits of computer technology, the instruments can be supplied with the exceptional ‘Assessor Extra’ upgrade, giving the instrument the ability to store measurements and transform data into informative, professional reports.

Noise Exposure Meter

These models also features a display of the estimated exposure duration. This feature estimates the noise exposure that would be achieved if the measurement was made over a longer period of time displayed in terms of LEX,8. For example, if the noise from an operation was measured for 2 minutes and the LAeq value is 92.6dB(A), the instrument will calculate the LEX,8 value based on different exposure durations.

  • With the Models 81A (Class 1) and 82A (Class 2), taking accurate industrial noise measurements has never been easier
  • Just four buttons, each with just one labelled function, make using the Assessor as simple as possible.
  • Just switch on the Model 82A and it starts measuring the parameters you need immediately including estimated noise exposure
  • The ‘A’ weighted Leq or average noise level is displayed with very large digits so it can be clearly seen
  • The risk from impulsive noise sources can be assessed using the ‘C’ weighted Peak value which is displayed on the right-hand side of the screen
  • Software upgrade option available
  • Non-Data logging option available.
Accuracy

Class 1 Model 81A,Model 81CA & Model 83

Class 2 Model 82A,Model 82CA & Model 84

Applicable Standards

Class 1 IEC 61672-1:2002 Type 1 EN 60651:1994, EN 60804:2000, EN 61260:1995

Class 2 IEC 61672-1:2002 Type 2 EN60651:1994 EN 60804:2000, EN61260:1995

Microphone

Class 1 MK:226 Class+ Electret Prepolarised Condenser

Class 2 MK:216 Class+ Electret Prepolarised Condenser

Measurement Range

57dB(A) to 130dB(A) Class 1 & Class 2

143dB(C) Peak

Noise Floor (Typical)

52dB(A)

Frequency Weightings

Model 81A & Model 82A dB(A) for Leq, dB(C) for Peak

Model 81CA & Model 82CA dB(A) & dB(C) for Leq, dB(C) for Peak

Model 83 & Model 84 dB(A) for Leq, dB(C) for Peak, dB(Z) for 1:1 Octave Bands

 

Measurements

Model 81A Model 82A

LAeq,t Equivalent Continuous Sound Level dB(A)

LCPeak Peak Sound Pressure dB(C)

LEP,d (LEX,8) Equivalent Daily Exposure Level dB(A)

Exposure Duration Indication (refer to manual for details)

Measurement Duration

Overload, Under Range

Measurement Status

Model 81CA Model 82CA

LAeq,t Equivalent Continuous Sound Level dB(A)

LCPeak Peak Sound Pressure dB(C)

LCeq,t-LAeq,t Mode dB(C) minus dB(A)

Measurement Duration

Overload, Under Range

Measurement Status

Model 83 Model 84

LAeq,t Equivalent Continuous Sound Level dB(A)

LCPeak Peak Sound Pressure dB(C)

LZeq,t in Octave Band Mode

Measurement Duration

Overload, Under Range

Measurement Status

Frequency Bands (Model 83 84 Only)

1:1 Octave Band Mode 31.5Hz to 8kHz

Display

Graphical LCD with Quasi-Analogue Bar Graph

Selected Measurement Parameter with Level

Warnings for Overload, Under Range

Battery Level

Frequency Weighting

Elapsed Measurement Time

Measurement Status (refer to manual for details)

Dimensions

Class 1 Instruments 340mm x 75mm x 25mm

Class 2 Instruments 300mm x 75mm x 25mm

Weight

450 gms

Batteries

2 x AA (LR6)

Battery Life

Typically > 18 hours

Environmental

Operating Temperature -10oC to +50oC

Storage Temperature -20oC to +60oC

Humidity 30 to 90% RH

External Connections

USB Output

Software

Pulsar Analyser Download / Analysis / Reporting Software (where appropriate)

This software is compatible with Windows 9x/Me/2000/NT/XP and Vista

Ordering Codes

Sound Level Meter Measurement Kit

Model 82A Model 82AK

Model 81A Model 81AK

Model 82CA Model 82CAK

Model 81CA Model 81CAK

SU80 Assessor Extra data logging upgrade with Software for Models 82A,81A,82CA & 81CA

Model 84 Model 84K

Model 83 Model 83K

Measurements kits include the Sound Level Meter, Acoustic Calibrator,Windshield, Hard Attache Case, *Software, Download Cable, Batteries, Operating Manuals & Certificates of Calibration

Pulsar Analyser Software

*The Pulsar Analyser Software is supplied with all versions of the Assessor Sound Level Meters. The Model 83 and Model 84 instruments can be connected to the software to download measurements. The Model 81A, 82A, 81CA and 82CA instruments can be upgraded to add data logging. Please contact Pulsar Instruments Plc or your local representative for more information.

The Assessor range focuses on one main task, that is compliance with International Industrial Noise Directives and the control and measurement of Workplace Noise. This mindset has produced an extremely effective noise measurement tool for the busy Health & Safety Professional, Industrial Hygienist, Consultant, Manager, Supervisor, Technician or Engineer.

  • Noise at work
  • Industrial hygiene
  • Quick spot checks

Pulsar Assessor datasheet

Download

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