เครื่องวัดเสียง Dual Range Sound Level Meter รุ่น 407736

Description

เครื่องวัดเสียง Dual Range Sound Level Meter Two measuring ranges: 35 to 90dB (Low) and 75 to 130dB (High)

407736 : Dual Range Sound Level Meter ยี่ห้อ Extech, USA

เครื่องวัดความดังเสียง ระดับเสียง ( Sound Level Meter )

Sound level meter with ±1.5dB accuracy meets Type 2 standards

This Sound Level Meter measures from 35 to 130dB with a 1.5dB accuracy and meets ANSI and IEC Type 2 standards. It features fast/slow response time, A/C Weighting, Max Hold, and analog AC/DC output for connection to an analyzer or recorder. Comes complete with microphone wind screen, 9-Volt battery, and carrying case.

Features:

Provides 1.5dB accuracy
Meets ANSI and IEC 651 Type 2 standards
Two measuring ranges: 35 to 90dB (Low) and 75 to 130dB (High)
Max Hold with reset button
Built-in calibration check (94dB)
Analog AC/DC outputs for connection to an analyzer or recorder
Tripod mount ideal for field use

For complete specs please download the product datasheet (not available for some accessories)

Specifications:

Display	3-1/2 digit (2000 count) LCD
Display update rate	0.5 seconds
Microphone	0.5” Electret condensor
Measurement Bandwidth	31.5Hz to 8KHz
Dynamic range	55dB
Measurement Range	35 to 130dB (Low: 35 to 100; High: 65 to 130dB)
Frequency weighting	‘A’ and ‘C’ (selectable)
Applicable standards	IEC-651 & ANSI S1.4 Type 2
Accuracy / Resolution	± 1.5dB / 0.1dB
Maximum Hold decay time	<1dB / 3min
Response time	Fast: 125 milliseconds / Slow: 1 second
Built-in calibration check	1KHz internal sine wave @ 94dB signal is electrical and is injected after the microphone
AC Analog output	0.65VAC rms (full scale); 600Ω output impedance
DC Analog output	10mVDC / dB; 100Ω output impedance (approx).
Power	9V Battery
Battery life	50 hours (typical); Low battery indicator alerts user
Dimensions	240 x 68 x 25mm (9.45 x 2.68 x 1”)
weight	210g (6.75oz)