Category

Specification

Bandwidth

 

• 25 Hz to 8 kHz

 

Microphone Sensor

 

• Digital MEMS

 

Precision Class

 

• Type II

 

Saturation Level (typical @ 1 kHz)

 

• 117 dB-A

• 114 dB-C

 

Temperature Error

 

• Better than 0.1 dB (0 °C < T < 60 °C)

• Better than 0.5 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

 

Noise-Floor (Typical)

 

• 31 dB-A

• 37 dB-C

 

Recording Resolution

 

• 0.1 dB

 

Duty Rate of Signal Capture

 

• 100% - No Missed Samples

 

Real-Time Spectral Display

 

• 512-point Power Spectrum – dB or Lin Scale.

 

Calibration

 

• Field-calibrated using a 1/2" calibrator

 

Connectivity

 

• USB -WiFi™

 

Battery Type

 

• Integral Li-Poly - USB-Rechargeable

 

Recharge Time

 

• 2 H 30 (Typical)

 

Battery Autonomy

 

• 7 days while recording

 

Battery Life

 

• > 300 Charge/Discharge Cycles

 

Temperature Range

 

• -20 °C to 60 °C (-4 °F to 140 °F)

 

Recording Memory

 

• Non-Volatile Flash Memory

 

Recording Memory Capacity (NSRT128 Model)

 

• 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

 

• 76.2 mm x 39.4 mm x 59 mm

• (3” x 1.55” x 0.81”)

 

Weight

 

• 100 g

 

Construction

 

• Integrally Potted Weather-Proof ABS Enclosure

 

 

Table 4