| Model | ST-25D sound analyzer meter |
| Fulfils Standard | IEC 61672 Class 2 |
| Dimensions | 260 x 80 x 30 mm |
| Display | 240×320 color screen, adjustable brightness, backlight can be closed |
| Display Resolution | 0.1 dB |
| Frequency Range | 20 Hz ~ 12.5kHz ± 1 dB (not including microphone) |
| Measurement Level | Z(FLAT): 38 ~ 130dB C peak: 145dB Z(FLAT): peak: 145dB |
| Measurement range | 28dB-133dB (141dB Peak) |
| Main Parameters of Measurement | LFp, LSp, LIp, Leq1, Lpeak, Leq,T, LFmax, LFmin, LSmax, LSmin, LImax, LImin, SEL,Ts, Tm, Volt, E. |
| Accuracy | ±0.7 dB |
| Weight | 0.35 kg (include batteries) |
| Application | Noise integrating measurement |
| Power Supply | battery 4×AA or external power supply |
| Environment | Working Temperature: -10 ~ 50°C Storing Temperature: -20 ~ 70°C |
| Statistical Analysis Function | Measure Index: Lxyp, Lxeq,0.5s, Lxeq,T, Lxymax, Lxymin, LxyeqT , SEL, Ln as minimum: 1, 5, 10, 50, 90 with 0.1 dB resolution, SD Note: x is A,C,Z y is F,S,I n is 1~99 24h measures index: Ld, Ln, Ldn. |
| Audio Recording | Record sound data and save it into “WAVE” format |
| SD card | Included |
| Integrating Function | Lxyi, Lxyp, Lxeq,t, Lxeq,T, Lxmax, Lxmin, Lxpeak LAE, LC-A, SEL Note: x is A,C,Z, y is F,S,I |
| GPS | Longitude, latitude, wind velocity, distance, direction and time calibration (Optional Upgrade) |
| 1/1 OCT | Optional Upgrade |
| Dosimeter Function | LAsp,LASMAX,LASMIN,TWA,LEX 8h, LCpeak, LZpeak, LAeq,T, LAVG, DOSE (Optional Upgrade) |
| FFT Analysis | Sampling Freq: 48 kHz, 24 kHz, 12 kHz, 6 kHz, 3 kHz Measuring Parameters: MAX, MIN, LeqT (Optional Upgrade) |
| Printer | Thermal or dot-matrix bluetooth printer (optional) |
