SLM 109 Specification
Standard | IEC 61672 Class 1, IEC 60651 Class 1, and IEC 60804 Class 1 ANSI S 1.4 Class 1 and ANSI S 1.43 Class 1 |
Measurement range | 30 dB to 130 dB (Expandable to 160 db by using a ¼ inch microphone) Dynamic range of 100 dB |
Accuracy and resolution | Accuracy of ± 1.0 dB Resolution of 0.1 dB |
Frequency range | 10 Hz – 20 kHz |
Measurement functions | Sound Pressure Level (SPL), LEQ, LN, PEAK, MAX, MIN, RMS, SD Simultaneous measurement of three profiles with independent sets of filters and detector time constants |
Frequency weighting | A, C, Z – can be measured in parallel |
Time Weighting | Fast, Slow, Impulse – can be measured in parallel |
Integration time | Programmable (1s to 24h) |
Octave filter | 1/1 octave at 5 points of frequency: 31.5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz |
Sampling frequency | 48 kHz |
LCD display | 160x160 mm LCD, with backlight. Can display the measurement with 0.1 dB resolution |
Analysis rate | 64 times per second |
Storage | Inbuilt 4GB storage through a Micro SD card |
Export data | Use adapter (Micro SD to SD card sets), or directly connect the computer to read the memory card data files; RS 232 interface |
Post processing software | Comes with a processing software to read the stored data and generate reports |
Alarm | Adjustable over 30-130dB range. The power light will turn red when the measurement value is larger than or equal to the alarm value set |
Timer | In built timer with current date and time displayed on the main screen. Also has an auto-power off mode that can be set manually |
Power | 4*1.5V AA alkaline batteries, sustainable use of more than 18 hours. Includes a low battery indicator. Rechargeable battery option available It can also run on an external 7-14V DC power adapter |
Calibration | Auto calibration using 94 dB and 114 dB external calibrators |
Size | 300 x 70 x 36 mm |
Weight | About 620g, including batteries |
Standard accessories | Carrying case and windscreen (included) Calibrator, tripod stand and spare microphone (available separately) |
Warranty | One year |