Extech Instruments 407355 User's Guide

USER GUIDE Noise Dosimeter with PC Interface Model 407355

407355-en-GB_v3.1 01/15 10Specifications Display Multi-function LCD Units of measure dBA (‘A’ weighted decibels) for sound level % DOSE for accumu

407355-en-GB_v3.1 01/15 11Conversion Charts OSHA Permissible Noise Exposures Duration per day, hours Sound level dBA, slow response 8 90 6 92 4 95

407355-en-GB_v3.1 01/15 2CCIntroduction Congratulations on your purchase of the Extech 407355 Personal Noise Dosimeter. The 407355 is designed to t

407355-en-GB_v3.1 01/15 3Descriptions Display Description 1. FAST Response Time mode 2. SLOW Response Time mode 3. Noise Exposure test active 4.

407355-en-GB_v3.1 01/15 4Meter Description 1. Microphone (lapel clip not shown) 2. Microphone cable 3. Microphone connector 4. LCD display 5. Pus

407355-en-GB_v3.1 01/15 5Operation Getting Started 1. Power the instrument by pressing the green button. 2. When the unit is turned on, all

407355-en-GB_v3.1 01/15 69. Use the MODE button at any time to view the elapsed time of the test. Press the MODE button until the TIME display ico

407355-en-GB_v3.1 01/15 7Calibration Procedure Note that an acoustical calibrator (such as the Extech 407744 or 407766) is required to calibrate th

407355-en-GB_v3.1 01/15 8Dosimetry Parameter Descriptions % DOSE The unit of measure, % DOSE, is used to quantify noise exposure measured during

407355-en-GB_v3.1 01/15 9PC Interface This meter has the capability to connect to and communicate with a PC. To install and use the software, pleas