NSRTW_mk2 is the second generation of Convergence Instrument’s WiFi™ enabled smart integrating sound-level meter/datalogger. It includes a type 1 digital MEMS microphone, an accurate date/time clock, a non-volatile 128 Mb recording memory and wireless connectivity with fast USB and WiFi™ download.

 

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. Its very small size allows it to be attached to or embedded within the monitored equipment.

 

The NSRTW_mk2 includes the following features:

• Type I precision.

• A, C and Z weighting curves.

• Integrating Sound-Level Meter, records L-max, L-min and Leq levels.

• Log interval adjustable from 125 ms (8 points per second) up to hours.

• Individual Manufacturer’s Certificate of Calibration from Convergence Instruments provided with every instrument purchased.

• WiFi™connectivity to report measured levels remotely and automatically at preset intervals.

• Open TCP/IP protocol, allows the customer to control the instrument remotely through a custom application.

• Email alarms for sound detected over specified threshold, as well as low-battery.

• Digital very sensitive MEMS microphone (30 dBA typical noise floor).

• Completely sealed weatherproof enclosure designed for outdoors applications.

• All-digital design.

• Ultra-stable sensitivity (field recalibration is easily done, but seldom required).

• Very low sensitivity variation due to temperature changes.

• Very low sensitivity to vibrations.

• Software function calculates global Leq and/or dose, according to ISO and OSHA methods.

• Adjustable response time.

• Preprogrammed recording start date/time.

• Integrated oscilloscope function that can show the acoustic signal in real time.

• Integrated spectral analyzer function that can show the spectrum (or 3rd-octave bands) in real time.

• Can be used as a high-quality USB digital microphone.

• Allows the observation of recorded levels while the recording is ongoing.

• Works standalone, or USB connected.

• Long life internal rechargeable battery that recharges from USB and most USB chargers.

• Can be field-calibrated.

• Observes and records 100% of the acoustic signal (no missed samples).

• Editable individual custom ID for easier instrument management.

• All settings are stored in non-volatile memory. So the instrument will regain full functionality and WiFi™ connection from hard-reset or battery loss.