Extech 407764 Datalogging Sound Level Meter, Type 2

DISCONTINUED- Replacement Model: Extech HD600 20,000 Point Datalogging Sound Level Meter Kit, Type 2

Type 2 meter with datalogging memory for 128,000 records. With RS-232 interface and software to transfer data to a PC.

• Meets ANSI and IEC 651 Type 2 standards
• 30 to 130dB measurement range with ±1.5dB accuracy
• Real time and Date are logged with data
• Tripod mount ideal for field use
• Autoranging over 6 ranges from 30 to 130dB with high accuracy to ± 1.5dB and 0.1 dB resolution
• Large LCD display with function indication and fast 50 segment bar graph display
• Stored data can be easily transferred to a PC via RS-232 interface and analyzed using software & cable provided
• A & C weighting and Fast/Slow response
• Max Hold function
• Internal self test when powered ON
• Detachable 0.52″(13.2mm) diameter condenser microphone
• Analog AC/DC recorder output 10mVDC/decibel
• Optional microphone extension cable for measurements in enclosures and other remote locations (407764-EXT)
• Dimensions: 10.4 x 2.8 x 0.8″(265 x 72 x 21mm); Weight: 10oz.
• Complete with microphone wind cover, Windows® 95/98/NT/2000/ME/XP compatible software, Serial cable, 4 AA batteries, and carrying case

• Monitor office or plant noise and store data for later reference and analysis
• Maintain noise level statistics for internal and external audits
• Perform machinery noise monitoring or use for noise reduction programs
• Store data for error free community noise monitoring

• Applicable Standards: IEC651 Type 2, ANSI S1.4 Type 2
• Accuracy: ±1.5dB (under reference conditions)
• Frequency Range: 31.5Hz – 8KHz
• Measuring Level: 30 – 130dB
• Frequency Weighting: A and C
• Microphone: 0.5” Electret condenser microphone
• Display: 4-digit LCD ; Resolution: 0.1dB; Display period: 0.5 sec.
• Bargraph: 50dB scale (1dB steps). Display period: 50mS; Auto-ranging: 100dB scale, 2dB steps
• Sampling Rate: 50mS
• Memory Size: 128,000 records / 255 sets (non-volatile memory)
• Datalogging Sample Rate: 1 to 86,400 seconds per record
• Time Weighting: FAST: 125mS, SLOW: 1 sec.
• MAX: Maximum reading held
• Level Ranges: 30-80dB, 40-90dB, 50-100dB, 60-110 dB, 70-120dB, 80-130dB (Total of 6 ranges)
• Auto Range: 30 to 130dB
• Linearity Range: 50dB
• Alarm Function: OVER indicator for readings higher than high limit. UNDER indicator for readings lower than low limit.
• AC Output: 0.707 Vrms at Full Scale. Output impedance approx. 600Ω
• DC Output: 10mV / dB. Output impedance approx. 100Ω
• Power Supply: Four 1.5V ‘AA’ batteries
• Battery Life: Approx. 30 hrs continuous operation
• AC Adapter: Voltage: 6VDC
• Operating Temperature: 0 to 40 oC (32 to 104 o F)
• Operating Humidity: 10 to 80%RH
• Storage Temperature: -10 to 60 o C (14 to 140 o F)
• Storage Humidity: 10 to 80%RH
• Memory Size: 128,000 data records with Date and Time Stamping
• RS-232 Interface: Baud rate: 9600bps
• Dimensions: 265 × 72 × 35mm (10.4 x 2.8 x 1.4”)
• Weight: Approx. 358g (11.5 oz) including battery

• Extech 407764 Data Sheet.pdf
• Extech 407764 User’s Manual.pdf