FeaturesThe Models 82CA & 81CA are the ideal instruments for those who do not want to pay extra for an instrument with 1:1 Octave Band Filters because the HML method (High, Medium and Low), is an established and accepted method of calculating hearing protection.
All hearing protection (PPE) should be supplied by the manufacturer with attenuation (reduction) values for each of the H, M and L values. By knowing the ‘C’ and ‘A’ weighted Leq values and the difference between them you can use either a spreadsheet of simple formula to prescribe suitable hearing protection for your workforce.
Example of typical spreadsheet calculator below:

By just pressing the C-A button, the instruments will automatically switch to ‘C-A’ Measurement Mode. A Blue indicator shows that you are now measuring in C-A mode rather than the normal Broadband mode.
The instrument will make an Leq measurement with dB(C) weighting (LCeq) and will continue until the average level has settled. When the level has settled, the instrument will switch to dB(A) and repeat the process with ‘A’ weighting. When this level has also settled, the instrument will display the LCeq, LAeq and in large digits the resultant LCeq – LAeq value on screen.
Making this type of measurement has never been easier as everything is done in an automatic cycle for you.
The Assessor range focuses on one main purpose and that is for compliance with International Industrial Noise Directives. This mindset has produced an extremely effective noise measurement tool for the busy Health & Safety Professional, Industrial Hygienist, Consultant, Manager, Supervisor, Technician or Engineer.
Typical noisy areas include: Manufacturing, Construction, Utilities (Gas, Water & Electricity), Local Authority / Government, Shipping, Entertainment / Leisure, Education / Higher Learning, Highway Maintenance, Haulage / Transport, Rail, Agriculture, Aviation, Public Transport, Emergency Service (Hospitals, Fire, Police), Chemical, Mining, Printing and Catering.
Measurement KitsInstruments can be supplied as a complete measurement kit to ensure you have all of the accessories necessary to perform your noise survey. The noise measurement kits include the Sound Level Meter, Acoustic Calibrator, Windshield, Hard Attache Case, Wrist Strap, Analyser Software (for upgrade versions), Operating Manuals, Certificates of Calibration, Download Cable and Batteries.
For specification details please see Model 82C-A & 81C-A data sheet