เครื่องวัดความดังเสียง Graphic Display Sound level meter รุ่น 840028

เครื่องวัดความดังเสียง – Graphic Display Sound Level Meter – แสดงผลแบบกราฟฟิก, บาร์กราฟ with Analog Output AC/DC ยี่ห้อ SPER SCIENTIFIC, USA

Description

เครื่องวัดความดังเสียง เครื่องวัดเสียง Sound Meter – เครื่องวัดระดับความดังเสียง Sound Level Meter 840028 (SPER SCIENTIFIC USA)

Sound Level Meter with PC Interface Big backlit display, PC Interface & background sound absorber

“High accuracy meets ANSI S1.4 and IEC 651 Type 2 standards”

840028 : เครื่องวัดเสียง Graphic Display Sound Meter ยี่ห้อ Sper Scientific, USA

Covers 30 ~ 130 dB in the A scale and 35 ~ 130 dB in the C scale with a resolution of 0.1 dB and an accuracy of ±1.5 dB. Meets ANSI S1.4 and IEC 651 Type 2 standards, and includes A & C decibel frequency weighting scales, fast or slow response, AC or DC output, low battery indicator, peak function and can be calibrated in compliance with OSHA using Acoustical Calibrator : SC05.

Contains many advanced features including: An even larger LCD display with an analog bar graph, auto-ranging, min/max functions and a USB computer interface. Another special function allows you to accurately measure equipment noise in the presence of high background noise. Comes ready to use with a windscreen, 9V battery, instructions, and a hard shell carrying case. N.I.S.T. traceable certificate of calibration (Optional).

Features:

High accuracy meets ANSI S1.4 & IEC 651 Type 2 standards
Background noise absorber for machine noise measurements filters ambient noise
RS-232 interface for capturing data directly on a PC
Large display with backlighting and analog bargraph
Min/Max
Analog AC/DC outputs for connection to a recorder
Tripod mount ideal for field use
Applicable Standards: IEC 651 Type 2, ANSI S1.4 Type 2
Power Supply: 9V battery, optional AC adaptor
Dimensions: 11½” × 3″ × 1½” (292 × 76 × 38 mm)
Weight: 8.5oz (240g)

Specifications:

Applicable Standards	IEC 651 Type2, ANSI S1.4 Type 2
Display	3½ digits LCD Bargraph Display: 50dB display range (1dB resolution)
Range	6 ranges in 10 dB step: 30 ~ 80dB, 40 ~ 90dB, 50 ~ 100dB, 60 ~ 110dB, 70 ~ 120dB, 80 ~ 130dB
Auto Range	30 ~ 130dB
Accuracy	±1.5 dB
Frequency	31.5 Hz to 8 KHz
Resolution	0.1dB
Microphone Size	6mm (diameter) Electric Condenser Microphone
Measurement Weightings	Level A: 30dB ~ 130dB
Measurement Weightings	Level C: 35dB ~ 130dB
Response	Fast – readout is maximum value at 0.2 seconds Slow – readout is maximum value at 1.5 seconds
Analog Output Signal	AC – 0.707Vrms at full scale DC – 10mV DC per dB
Quasi-Analog Bar Indicator	1dB display steps, 50dB display range, updated every 50ms
Operating Temperature	32 to 122°F (0 to 50°C)
Operating Humidity	10 ~ 90% Relative Humidity
Power Supply	One 9V battery (approximate life: 20 hours alkaline)
Size	80 x 256 x 38mm (3″ x 11″ x 1.5″)
Weight	240g (10.3oz)