เครื่องวัดเสียง รุ่น 407768-NIST แบรนด์ Extech

Soud Level Meter

Features:

• Auto/Manual ranging from 30 to 130dB in three 50dB ranges
• Meets ANSI and IEC Type 2 standards
• A and C selectable frequency weightings
• Fast and Slow selectable response times
• Large digital display with 0.1dB resolution
• Condenser microphone provides precision and stability
• Min/Max and Max Hold
• AC output for recorders
• RS-232 interface for capturing data directly on a PC
• Complete with batteries, Windows® 95/98/NT/2000/XP compatible software, interface cable, and case

Specifications

• Digital Display : 5 digit Autorange LCD
• Measurement Range : 30 to 130dB
• Resolution : 0.1dB
• Accuracy : ±1.5 dB @ 94dB for a 1kHz sine wave
• Microphone : 1/2” Electret Condensor
• Frequency Weighting : “A” and “C” type
• Time Response : Slow/Fast
• Measurement frequency range : 31.5Hz to 8KHz
• Analog output : AC: 0.5V (full scale)
• Applicable Standards : IEC 651 Type 2, ANSI S1.4 Type 2
• Power Supply : 9V battery
• Dimensions : 10.6 x 2.7 x 1.1” (268x68x29mm)
• Weight : 0.63lbs (285g)