Bruel & Kjaer Type 2231, Modular Precision Sound Level Meter. Mic 4189 0020 7100

US $1200

  • Corona, California, United States
  • Jun 7th
Bruel & Kjaer Type 2231, Modular Precision Sound Level Meter.  Microphone Type 4189  Attenuator ZF 0020  Application Module BZ 7100 JJ 2614 **Turns On, seems to be in working condition. No further testing was done** Signs of usage, paint chips and fading. Actual Pictures, you get what you see. Features Fulfills IEC 804 type 1, relevant sections of IEC 651 type 1 I, and ANSI S1.4-1983 type 1. Easy to read liquid crystal alphanumeric and quasi-analogue display. Selectable polarization voltage allows use of almost any microphone in the Bruel & Kjaer range. RMS and Peak detection in parallel. 73 dB Pulse range; 70 dB RMS Linearity range. 24 to 113 dB (A) measuring range (30 to 133 dB (A) with attenuator) in 7 overlapping sub-ranges. A, C, Lin. and All-pass weightings. Extra wide all-pass frequency range allows infrasound and ultrasound measurements. Internal memory has back-up battery power which prevents loss of application software and data when the instrument is switched off. Facility for connection of Bruel & Kjaer Serial Interface communication port, allowing external control and output of measurement data.

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