Extech 407750 Sound Level Meter with PC Interface & Background Sound Absorber, Type 2

The Extech 407750 Sound Level Meter with PC Interface & Background Sound Absorber filters ambient noise.

• High accuracy meets ANSI & IEC 651 Type 2 standards
• Auto/Manual ranging from 30 to 130dB in 6 ranges
• A and C selectable frequency weightings
• Fast and Slow selectable response times
• Large 3 1/2 digit display with 0.1dB resolution with backlighting and analog bargraph
• Electret condenser microphone provides 1.5dB accuracy
• Background noise absorber for machine noise measurements filters ambient noise
• RS-232 interface for capturing data directly on a PC
• MIN/MAX readings
• Analog AC/DC outputs for connection to a recorder
• Tripod mount ideal for field use
• Complete with microphone wind cover, 9V battery and carrying case

• Identify noise ordinance violations
• Machine noise evaluation
• Traffic noise measurements
• Community noise measurements
• Theater acoustic studies
• Stereo balancing
• PC interface for data collection

• 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)

• Extech 407750 Data Sheet.pdf
• Extech 407750 User’s Manual.pdf