Keterangan :

EXTECH Sound Level Meter with PC Interface 407750

Features:
Meets ANSI & IEC 651 Type 2 standards
Background noise absorber for machine noise measurements filters ambient noise
30 to 130dB measurement range with ± 1.5dB accuracy
Large display with backlighting and analog bargraph
MIN/ MAX, Auto/ Manual Ranging
Analog AC/ DC outputs for connection to a recorder
RS-232 interface for capturing data directly on a PC
Tripod mount ideal for field use
For complete specs please download the product datasheet ( not available for some accessories)

Specifications
Digital Display : 3-1/ 2 digit ( 1999count) Autorange LCD
Bargraph Display : 50dB display range ( 1dB resolution) ;
Measurement Range : 30 to 130dB ( 31 to 130dB for " C" weighting)
Resolution : 0.1dB
Accurancy : ± 1.5dB @ 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 0.5 seconds
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× 3.1× 1.5" ( 256× 80× 38mm)
Weight : 85oz.( 240g)