407732

User's Guide Digital Sound Level Meter Model 407732 Introduction Congratulations on your purchase of the Extech 407732 Digital Sound Level Meter. The 407732 measures and displays sound pressure levels in dB from 35 to 130dB. The LCD is backlit for viewing readings in dimly lit areas. User selectable features include Frequency Weighting (‘A’ and ‘C’), Response Time (Fast and Slow), Max Hold, and Range (High and Low). Careful use of this meter will provide years of reliable service. Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact information. A Return Authorization (RA) number must be issued before any product is returned to Extech. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or consequential damages. Extech's total liability is limited to repair or replacement of the product. The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or implied. Safety Read the following safety information carefully before attempting to operate or service the meter. Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired. Environmental Conditions Altitude up to 2000 meters Relative Humidity: 90% max. Operating Temperature: 32 to 104 F (0 to 40 C) Maintenance and Cleaning Repair or servicing not covered in this manual should only be performed by qualified personnel. Periodically wipe the case with a dry cloth. Do not use abrasives or solvents. o o Calibration and Repair Services Extech offers repair and calibration services for the products we sell. Extech also provides NIST certification for most products. Call the Customer Service Department for information on calibration services available for this product. Extech recommends that annual calibrations be performed to verify meter performance and accuracy. 2 Model 407732 Version 1.4 June 2004 Specifications Display Display update rate Microphone Measurement Bandwidth Dynamic range Measurement Range Frequency weighting Accuracy / Resolution Standards Maximum Hold decay time Response time Calibration source required Power Battery life Automatic power off Operating temperature Operating humidity Storage temperature Storage humidity Dimensions/weight 4-digit (4000 count) backlit LCD 0.5 seconds 0.5” Electret condensor 31.5Hz to 8KHz 65dB 35 to 130dB (Low: 35 to 100; High: 65 to 130dB) ‘A’ and ‘C’ (selectable) ± 1.5dB (under reference conditions) / 0.1dB Meets ANSI and IEC Type 2 SLM standards