ST-21D Sound Level Meters fully comply with the latest Class 2 IEC 61672:2013 standard. Advanced integrating algorithms designed to withstand industrial conditions.
Equates continuous sound level and sound exposure after choosing a time period, an ideal tool for occupational noise measurements, such as those required by the Controls of Noise at Work Regulations or OSHA Occupational Noise standards. At the front line, ensure the protection of hearing and occupational safety for employees.
| Model | ST-21D |
| Fulfils Standard | IEC 61672:2013 Class 2 |
| Dimensions | 310×72×32 mm |
| Normal frequency | 20 Hz~12.5 kHz |
| Measurement range | 28~133 dB |
| Measurement Level | Z(FLAT): 38 ~ 130dB / C peak: 145dB / Z(FLAT): peak: 145dB |
| Main Parameters of Measurement | LFp, LSp, LIp, Leq,t, Lpeak, Leq,T, LFmax, LFmin, LSmax, LSmin, LImax, LImin, SEL, Lex8h, LAVG, TWA, DOSE, Ln1, Ln2, Ln3, Ln4, Ln5, SD,Ts, Tm, Volt, E. |
| Display | 128×64 OLED |
| Weight | 0.4kg |
| Application | Sound level meter/ Noise Dosimeter/Data logging & Precision recording(Opt) |
| Power Supply | battery 4×AAA or external power supply |
