HBK 2255

CHARACTERISTICS

• Single measurement range: 15.8 – 140.9 dB from the noise floor to maximum level,
  A-weighted 
• Removable preamplifier with TEDS for automatic microphone setup 
• Integrated GPS for time and location 
• Ergonomic design for comfortable single-handed operation 
• Colour LCD with a bright, clean layout that clearly displays measured level and measurement status 
• Measurement status light-ring visible from any angle 
• Built-in Li-Ion battery, typically providing more than 13 hours operation with Wi-Fi enabled 
• 16 GB built-in storage for measurements and annotations 
• Integrated Wi-Fi and Bluetooth® Low Energy for connection to mobile and PC apps

MEASUREMENT CAPABILITIES

• IEC 61672-1 class 1 sound level meter 
• Broadband level measurements with up to three simultaneous frequency weightings 
• 1/1- and/or 1/3-octave band frequency analysis for up to two simultaneous frequency weightings 
• Logging of all parameters at intervals between 1 second and 1 hour 
• Fast-logging of broadband L_eq, L_XF and L_XS levels at intervals between 1 ms and 1 second 
• Fast-logging of 1/n-octave band L_eq, L_XF and L_XS levels at intervals between 4 ms and 1 second 
• Reverberation time measurements with interrupted or impulsive noise stimuli 
• Broadband and spectral statistics for 5 percentiles. Full level distribution stored allowing re-calculation of arbitrary percentiles in HBK apps. 
• Listening quality MP3-compressed audio recording 
• Analysis quality FLAC-compressed audio recording (65 kHz, 24-bit) 
• Level and timer-based audio recording triggers 
• Scheduled multi-frequency CIC checks for unattended monitoring applications 

* Available measurement features depend on installed software licenses. Refer to product data sheet for details.