Features of
the 407764 Extech Datalogging Sound Level
meter
-
Autoranging over 6 ranges from 30 to 130dB with
high accuracy to ± 1.5dB and 0.1 dB resolution
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Large LCD display with function indication and
fast 50 segment bar graph display
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Time and Date are logged with data
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Stored data can be easily transferred to a PC via
RS-232 interface and analyzed using software & cable
provided
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A & C weighting and Fast/Slow response
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Tripod mount provided on rear.. Order Tripod
Below.
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Max Hold function
-
Meets ANSI S1.4 Type II and IEC 651
standards
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Internal self test when powered ON
-
Detachable 0.52"(13.2mm) diameter condenser
microphone
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Analog AC/DC recorder output 10mVDC/decibel
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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
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Optional Certificate of Calibration, traceable to
N.I.S.T. with data at multiple points
Applications of the 407764 Sound Level
Meter
- • 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
Specifications of the
407764 Sound Level Data Logger
- 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
- Voltage Ripple: < 100mVpp
- Supply Current: > 100mADC
- Socket: Pin Ground
- Casing: Positive
- External Diameter: 3.5mm
- Operating temperature 32 to 104oF (0 to 40oC)
- Operating humidity 10 to 80%RH
- Storage temperature 14 to 140oF (-10 to 60oC)
- Storage humidity 10 to 80%RH
- Memory size 128,000 data records with Date and Time
Stamping
- RS-232 Interface Baud rate:
9600bps
- Dimensions 10.4 x 2.8 x 1.4” (265 × 72 × 35mm
- Weight Approx. 11.5 oz. (358g) including battery
- Accessories: Batteries, carrying case, screwdriver, windscreen,
3.5mm plug, RS-232 cable , WindowsTM compatible software.
Order sound level calibrators
and other accessories below:
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