DSM402SD

DSM402SD / JEDTO เครื่องวัดเสียง Sound Meter with SD Card หน้าจอ LCD วัดค่าได้อย่างแม่นยำ พร้อมคู่มือและอุปกรณ์การใช้งาน แบบพกพา

เครื่องวัดเสียง รุ่น DSM402SD

Features

Specifications
Embedded Microcontroller	Custom single-chip LSI device
Display Type	LCD with green backlight
Display Size	2.05 x 1.5 in. (52 x 38mm)
Parameter Measured	dB
Frequency Range	31.5 Hz to 8 kHz
Measurement Range	30 to 130 dB in autoranging mode User can also select fixed range of 30 to 80 dB, 50 to 100 dB, or 80 to 130 dB
Measurement Weighting	By frequency: frequency weighing uses “A” or “C” standard By time: time weighting is fast or slow (200 ms or 500 ms response time)
Measurement Accuracy	With “A” frequency weighting: ± 3.5 dB @ 31.5 Hz, 2. 5 dB@ 63 Hz, 2 dB @ 125 Hz, 1.9dB @ 250 Hz, 1.9 dB @ 500Hz, 1.4 dB @ 1 kHz, 2.6 dB@ 2 kHz, 3.6 dB @ 4 kHz, 5.6 dB @ 8 kHz
Measurement Resolution	0.1 dB
Data Logging Sampling Time	1 second to 1 hour
Settable Parameters	Date, time, auto power off, beep sound, sampling time, decimal point or comma decimal division, “A” or “C” frequency weighting, fast or slow time weighting
Storable/Recallable Readings	Maximum, minimum
SD Card Capacity	1 GB to 16 GB
Operating Temperature	32° to 122°F (0°to 50°C)
Operating Relative Humidity	0 to 85%
Power Supply	Six Alkaline “AA” batteries or optional 9-VDC AC adapter
Power Consumption	8 mADC (normal operation, with backlight off and SD card not saving data) 30 mADC with backlight on and card saving data 44 mADC with backlight on and card saving data