Extech 407780A Features:
- 4-digit multifunction LCD with analogue bargraph
- Precise linearity over wide range (100dB)
- Display modes: SPL, SPL MIN/MAX, SEL, and Leq
- Programmable integrating time
- A and C Frequency weighting
- Impulse/Fast/Slow response settings
- Datalogging function records up to 32,000 records
- Real time calendar/clock
- Analog and alarm output features can be used to connect with Frequency analyzers, chart recorders, external dataloggers, and sound level alarms
- Built-in USB interface with included Windows® datalogging software
- Tripod mount
- Meets IEC 61672-1, 60651/60804 Type 2 and ANSI S1.4 Type 2 specifi cations
- Complete with windscreen, adjustment screwdriver, USB cable, Windows® compatible software, battery, and case
Extech 407780A USB Sound Level Specifications
Microphone | 0.5″ (12.7mm) Electret Condenser Microphone |
Measurement Range | 30 to 130dB |
Frequency Range | 31.5 to 8kHz |
Sampling Time | Updated every 0.5s |
Accuracy | ±1.5dB (ref 94dB@1KHz) |
Resolution | 0.1dB |
Measurement Parameters | SPL, SPL MIN/MAX, SEL, and Leq |
Frequency Weighting | A and C |
Response | Impulse, Fast and Slow |
Data Storage Capacity | 32,000 Samples |
Battery | (4) 1.5 Volt AA Batteries |
Battery Life | Approximately 24 Hours |
PC Interface | USB |
Software | Windows XP and Vista 32-Bit Compatible |
Standards Compliance | IEC: 61672-1, 60651 and 60804 Type 2 ANSI: S1.4 Type 2 |
Dimensions | 265mm x 72mm x 21mm |
Weight | 310 grams |
Do not attempt to remove the mesh cover from the microphone as this will cause damage and affect the accuracy of the instrument. Protect the instrument from impact. Do not drop it or subject it to rough handling. Transport it in the supplied carrying case. Protect the instrument from water, dust, extreme temperatures, high humidity and direct sunlight during storage and use.Protect the instrument from air with high salt or sulphur content, gases and stored chemicals, as this may damage the delicate microphone and sensitive electronics. Always switch the instrument off after use. Remove the batteries from the instrument if it is not to be used for a long period of time. Do not leave exhausted batteries in the instrument, as they may leak and cause damage. Clean the instrument only by wiping it with a soft, dry cloth or, when necessary, with a cloth lightly moistened with water. Do not use solvents, abrasives, alcohol or cleaning agents.