The Extech 407750 Digital Sound Level Meter features a background noise absorber mode to filter ambient noise.
Features & Applications:
The Extech 407750 Digital Sound Level Meter can be used effortlessly to monitor machine noise evaluation, OSHA compliance testing, community noise measurement and noise ordinance. It also complies with the ANSI and IEC Type 2 standards.
The Digital Sound Level Meter is equipped with Auto and Manual ranging, from 30 to 130db in 6 sound level ranges, fast and slow selectable response times, and selectable "A" and "C" frequency weightings. Obtain sound readings quickly and accurately on the large, 3-1/2 digit display (resolution=0.1dB) with backlighting and an analog bargraph.
For recording purposes, an RS-232 interface is available for sound data collection directly into your PC.
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
Spec Summary:
Digital Display: |
3-1/2 digit (1900 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: |
±1.5dB@94dB for a 1KHz sine wave |
Microphone: |
Electret Condensor .24" (6mm diam.) 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: 0.70Vrms (full scale); DC: 10mVDC/dB |
Applicable Standards: |
IEC 651 Type 2, ANSI S1.4 Type 2 |
Power Supply: |
9V battery, optional AC adapter |
Dimensions: |
10 x 3.1 x 1.5" (256 x 80 x 38mm) |
Weight: |
8.5oz. (240g) |
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