ST-12D complies with the Class 1 IEC 61672-1:2013 standard, designed for occupational noise measurement and research. It features a wide measurement range of 25 to 140 dB and is capable of measuring parameters such as Leq, Lpeak, Lmax, Ln, and more. The ST-12D also supports a spectrum analyzer with optional 1/1 and 1/3 octave band filters, enabling real-time frequency analysis for precise noise assessments.

Sound Level Meter - ST 12D Class 1 | 一級聲音計

數量

Fulfils Standard	IEC 61672-1: 2013 Class 1 IEC 61672-1: 2013 Class 1
Dimensions	250 × 76 × 33 mm
Weight	340 g
Display	2.4-inch 240 × 320 pixel full-color display Adjustable brightness & backlight can be turned off
Display Resolution	0.1 dB
Refresh Rate	0.5 s
Main Parameters of Measurement	LXYp, LXYmax, LXYmin, LXeq, LXeq,T, LXeq,t, LXpeak, L5, L10, L50, L90, L95, SD, Ld, Ln, Ldn, SEL, LXE, E, TWA, Lex, 8h, LAVG, DOSE X = A, C, Z Y = F, S, I, I10
Measurement Range	25 ~ 140 dB (143 dB C Peak)
Accuracy	± 0.5 dB
Frequency Range	10 Hz ~ 20 kHz
Frequency Weighting	A, C, Z
Time Weighting	F, S, I, I10

Integrating Time	1s ~ 99 h 59 m 59 s
Audio Recording	Record noise data in MP3/WAV format Synchronize/Trigger mode Sampling rate: 12 kHz, 24 kHz, 48 kHz / 16 bit, 24 bit
Storage Capacity	4 GB internal memory 64 GB SD card
Output Interface	USB type-C, Bluetooth, AC/DC signal, Serial
Power Supply	4 x AA alkaline batteries External power supply (USB type-C adapter): 5V, 1A
Operation Time	Max 24hrs by 4 x AA alkaline batteries (The operation time varies depending on the device settings and battery type)"
Operation Environment	Working temperature: -20 ~ 60 °C Relative humidity: 20% ~ 90%

Sound Level Meter - ST 12D Class 1 | 一級聲音計

Tech Specs

Tech Specs - 2