The Wireless Sound Level Meter Data Logger NSRTW_mk3 is the third generation of Convergence Instrument’s WiFi™ enabled smart integrating sound-level meters/dataloggers. It includes a digital MEMS microphone, an accurate date/time clock, a non-volatile 128 Mb recording memory and wireless connectivity.
Running on battery, it can record sound pressure levels and report them through WiFi™ for a week. Connected to an external USB charger it can record and report for months. It’s very small size allows it to be attached to or embedded within the monitored equipment.
Every Wireless Sound Level Meter Data Logger NSRTW mk3 purchased is provided with an Individual Manufacturer’s Certificate of Calibration from Convergence Instruments. This all-digital design includes the A, C and Z weighting curves. It is enclosed in a completely weatherproof casing which is designed for indoors and outdoors applications. Its highly sensitive Type 1 MEMS microphone has a noise floor of 30 dB-A and is ultra stable with time and temperature variations. The software includes an oscilloscope and spectrum analyzer features, as well as email alarms.
Mounting Base and Tripod Adapter are included.
Wireless Sound Level Meter Data Logger NSRTW_mk3 Applications
- Sound level and acoustic dose measurement and recording.
- Monitoring of safe working conditions.
- 24/7 noise monitoring on construction sites.
- Email Alerts when the noise is too loud.
- Activity detection and logging.
- Long-term measurement and recording of acoustic levels for environmental impact studies.
- Specially designed for long-term outdoor applications.
|Bandwidth||20 Hz to 20 kHz|
|Microphone Sensor||Digital MEMs|
|Precision Class||Complies with the precision requirements of IEC61672-2002 Type I|
|Saturation Level (typical @ 1 kHz)||120 dB-A, 120 dB-C, 120 dB-Z|
|Temperature Error||Better than 0.6 dB (-20°C < T < 60°C)|
|Sensitivity to Vibrations||60 dBSPL/g (20 dB lower than typical measurement microphone)|
|Weighting Curve||dB-A, dB-C, dB-Z|
|Noise-Floor (Typical)||30 dB-A, 46 dB-C, 52 dB-Z|
|Recording Resolution||0.1 dB|
|Duty Rate of Signal Capture||100% – No Missed Samples|
|Min Log Interval||125 ms (8 points of Lmin, Lmax and LEQ per second)|
|Real-Time Spectral Display||2048-Point Power Spectrum – dB or Lin Scale.|
|Calibration||Field-calibrated using a 94 dB 1/2” calibrator|
|Radio Standard||IEEE 802.11 b/g/n|
|Radio Certification||FCC, IC, Japan, Korea, CE|
|Battery Type||Integral Li-Poly – USB-Rechargeable|
|Recharge Time||2 h 30 (Typical)|
|Battery Autonomy (Full-Charge)||7 days while recording (WiFi operation will drain battery slightly more, depending on the rate of connect)|
|Battery Life||> 300 Charge/Discharge Cycles|
|Temperature Range||-20°C to 60°C (-4°F to 140°F)|
|Recording Memory Type||Non-Volatile Flash Memory|
|Recording Memory Capacity||128 Mb, Ex: can continuously record Lmax, Lmin and Leq levels at 1s intervals for 32 days, or 10s intervals for 320 days.|
|Recording/Erasure Cycles||Greater than 100 000|
|Data Retention||Greater than 20 Years|
|Dimensions||19 mm x 42 mm x 160 mm – (0.75” x 1.65” x 6.25”)|
|Weight||100 g (0.1 lbs)|
|Microphone Dust Protection||Expanded polytetrafluoroethylene (ePTFE) dust and water barrier|
|WiFi Security||Open, WEP, WPA / WPA2|
|Server Connection||IP address/Domain Name|
|Protocol||TCP/IP – Open protocol|