BRUEL & KJAER 4111 Instructions And Applications

4111
INSTRUCTIONS AND APPLICATIONS
Condenser Microphone
Type 4111
Specially designed for measurement and calibration
applications, this Condenser Microphone features
very high stability, a high linea r frequency response
together with small dimension s .
BHUEL
&
KJJEK
Naerum, Denmark . Phone Naerum 500. Telegrams: BRUKJA, Copenhagen
Beat frequency oscillators
Low frequency oscillators
Deviation test bridges
Strain gauge apparatus
Frequency measuring bridges
Distortion measuring bridges
Heterodyne voltmeters
Audio
f~uency
spectrometers
Frequency analyzers
Level recorders. a. c. and d. c.
Automatic frequency response
recorders
Automatic A. F. spectographs
Logarithmic potentiometers
Noise level potentiometers
Recording paper
Polar diagram recorders
Vacuum tube voltmeters
Wide range vacuum tube
voltmeters
Diode voltmeters
D. C. voltmeters
Megohm meters
~icrophone
amplifiers
Impact sound generators
Acoustic standing wa.,.
apparatus
Artificial ears
Condenser microphones
Microphone calibration
apparatus
Vibration pick-ups
Integration networks
Rotary selectors
Universal selectors
Freqllency response tracers
Conductivity meters
Electronic counters
Counting rate meters
Impulse generators
Portable dose rate meters
Portable counting rate meters
G.
M.
tubes·
&
accessories