Description
เครื่องมือวิทยาศาสตร์ อุปกรณ์วิทยาศาสตร์ > เครื่องวัดเสียง > เครื่องวัดวิเคราะห์ระดับความดังเสียง > Sound Level Meter/Datalogger > Display Function: Lp, Leq, LE, Lmax, Lmin, L05, L10, L50, L90, L95,
407790A : Real Time Octave Band Analyzer with USB ยี่ห้อ Extech, USA
Type 2 integrating sound level meter with Octave and 1/3 Octave Band real time display
- Wide measurement in 5 ranges: 20 to 90dB, 20 to 100dB, 20 to 110dB, and 30 to 120dB, 40 to 130dB
- 3.5″ (320×240) TFT color LCD with backlight feature displays Leq, LE, Lmax, Lmin, Lp, L05, L10, L50, L90, L95
- Stores readings on microSD card
- Precise linearity over wide range (100dB)
- Transferred data to a PC to be analyzed using software and cable provided
- A, C and Z weighting with Fast or Slow response
- 25Hz to 10kHz frequency response
- Meets ANSI and IEC Type 2 standards
- Internal self test when powered ON
- Detachable 0.52″ (13.2mm) diameter condenser microphone and Tripod mount provided on rear
- Analog AC/DC recorder output
- Real time clock with Year, Month, Day, Hour, Minute and Second display
- Optional microphone extension cable for measurements in enclosures and other remote locations (407764-EXT)
- Complete with Windows® compatible software, USB cable, 4 x C batteries, microphone wind screen, mini screwdriver, 120V AC adaptor, and case
Applicable standards | ANSI S1.4 Type 2, EN IEC 60651, EN IEC 60804, and EN IEC 1260-1995 |
Accuracy | ±1.5dB (ref 94dB @ 1kHz) |
Measurement functions | Lp, Leq, LE, Lmax, Lmin, L05, L10, L50, L90, L95, |
Frequency range | 25Hz ~ 10kHz |
Frequency Weighting | A, C, and Z |
Time Weighting | Fast, Slow, 10ms (τ), I |
Display | 3.5″ (89mm) 320×240 TFT color backlit LCD; Displays 1/1, 1/3, and 1/1 & 1/3 |
1/1- 1/3 Analyzer level range | 5 ranges in 10db steps: 20 to 90dB, 20 to 100dB, 20 to 110dB, 30 to 120dB, 40 to 130dB |
1/1 Octave and 1/3 Octave | 1/1 Octave band center frequencies: (9 bands); |
1/3 Octave band center frequencies: (27 bands) | |
Signal output | AC output: 1 Vrms (at full scale); DC output: 3.0V, 25mV/dB |
Memory | microSD card (included) |
Measurement Time | 1s to 23h 59m 59s |
Power | Four type C size 1.5V batteries, External DC power: 6V, 1A |
Dimensions | 13.6 x 3.9 x 2.4″ (345 x 100 x 60mm) |
Weight | 33.5oz (950g) |
The 407790A allows the following quantity measurements. Simultaneous measurements of all items with selected time weighting and frequency characteristics. |
|
• Sound level | Lp |
• Equivalent continuous sound | Leg |
• Sound exposure level | SEL |
• Maximum sound level | Lmax |
• Minimum sound level | Lmin |
• Percentile sound level | LN (L05, L50, L90, L95) calculated from Lp |
• Frequency rating | A, C, Z |
• Time weighting Main Channel Sub Channel |
Fast, Slow, 10ms, impulse Fast, Slow, 10ms, impulse |
Applications:
– Real time analysis of noise from any source such as machinery or vehicles
– 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
Ordering Information:
407790A…………Real Time Octave Band Analyzer
407764-EXT……15ft (4.7m) Microphone Extension Cable
407744…………..94dB Sound Level Calibrator
407766…………..94/114dB Sound Level Calibrator
• ราคาสินค้ารวม ยังไม่รวมภาษีมูลค่าเพิ่ม 7%
• ราคาสินค้าไม่รวมค่าขนส่ง
• สเปคและราคาสินค้าอาจมีการเปลี่ยนแปลงโดยไม่แจ้งให้ทราบล่วงหน้า
