Specifications subject to change without notice.
Copyright © 2008 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.
www.extech.com 4/24/08 - R1
Big backlit display and PC interface
With background sound absorber for machine noise measurements
Digital Sound Level Meter
Ordering Information:
407750....................Digital Sound Level Meter
407750-NIST ..........407750 with NIST Certificate
407752....................Windows compatible Software and Cable
407744....................94dB Sound Calibrator
Features:
•Auto/Manual ranging from 30 to 130dB in 6 ranges
•Meets ANSI and IEC Type 2 standards
•A and C selectable frequency weightings
•Fast and Slow selectable response times
•Background noise absorber mode for machine noise
measurements filters ambient noise
•Large 3 1/2 digit display with 0.1dB resolution
with backlighting and analog bargraph
•Electret condenser microphone provides 1.5dB accuracy
•Min/Max plus analog output and tripod mount
•Max Hold latches maximum value on display
•RS-232 interface for capturing data directly
on a PC, optional Windows®compatible software
•Complete with batteries and carrying case
Applications:
•Machine noise evaluation
•OSHA compliance testing
•Community noise measurement
•Noise ordinance
•PC interface for data collection
Specifications
Digital Display 3-1/2 digit (1999 count) Autorange LCD
Bargraph Display 50dB display range (1dB resolution);
Measurement Range 30 to 130dB (35 to 130dB for “C” weighting)
Resolution 0.1dB
Accuracy ±1.5 dB @ 94dB for a 1kHz sine wave
Microphone Electret Condensor .24"(6mm dia.) type
Frequency Weighting “A” and “C” type
Time Response Slow/Fast
Sampling time updates every 0.5seconds
Measurement frequency range 31.5Hz to 8KHz
Analog output AC: 0.707Vrms (full scale); DC: 10mVDC/dB
Applicable Standards IEC 651 Type 2, ANSI S1.4 Type 2
Power Supply 9V battery , optional AC adaptor
Dimensions 10 x 3.1 x 1.5"(256 x 80 x 38mm)
Weight 8.5oz. (240g)
Windows compatible Software
and Cable
