The Bruel & Kjaer 2231
Modular Precision Sound Level Meter 2 Hz - 70 kHz is a type 1 precision
instrument. It is ideal for measurements according to the most stringent
standards because of the comprehensive construction and extreme accuracy of the
instrument. A system of interchangable modules to make different measurements
is possible by using the 2231 sound meter. The instrument is compatible with
almost any Bruel & Kjaer microphone and extends the measurement
capabilities. The 2231 Modular Precision Sound Level Meter derives its many
measurement capabilities from a series of interchangeable application modules.
Each inserted module loads software that defines the functions of the buttons
of the sound level meter. The software loaded still remains in tact when the
sound meter is turned off.
Interchangeable application modules for a variety of measurements
Selectable polarization voltage grants the capability of using other
microphones in the Bruel & Kjaer family
Peak and RMS parallel detection
Meets the IEC 804 Type 1 requirements as well as sections from IEC 651
Type 1 and ANSI S1, 4 Type 1
24 dB to 130 dB standard measuring range in 7 over-lapping sub-ranges.
(Can be increased to 30 dB to 150 dB with attenuator)
Infrarand ultrasound measurments capable by the extra wide all pass
Compatible with Bruel & Kjaer Serial Interface MOdule ZI 9101 for
external control and communication