BRUEL & KJAER 4188 - Specifications Overview; Ordering Information

Chapter 5 — Free-field
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2
" Microphone Type 4191
Electromagnetic Compatibility
Falcon™ Range of Microphone Products
Microphone Handbook
Brüel & Kjær
5
−
28
5.16 Electromagnetic Compatibility
See Chapter 8.
5.17 Specifications Overview
5.18 Ordering Information
Preamplifier
Type 2669:
1
/
2
" Microphone Preamplifier
Calibration Equipment
Type 4231: Sound Level Calibrator
Type 4226: Multifunction Acoustic Calibrator
Type 4228: Pistonphone
UA0033: Electrostatic Actuator
OPEN-CIRCUIT SENSITIVITY (250Hz)*:
–38dB
±
1.5 dB re 1V/Pa, 12.5mV/Pa*
POLARIZATION VOLTAGE:
External: 200 V
FREQUENCY RESPONSE*:
0° incidence free-field response:
5Hz to 16kHz
±
1dB
3.15Hz to 40kHz
±
2dB
In accordance with IEC 651, Type 0, Type 1 and
ANSI S1.12, Type M
LOWER LIMITING FREQUENCY (–3 dB):
1Hz to 2Hz (vent exposed to sound)
PRESSURE EQUALIZATION VENT:
Side vented
DIAPHRAGM RESONANCE FREQUENCY:
34kHz, typical (90
°
phase shift)
CAPACITANCE (POLARIZED)*:
18pF, typical (at 250 Hz)
EQUIVALENT AIR VOLUME (101.3 kPa):
11.6mm
3
*
Individually calibrated
CALIBRATOR LOAD VOLUME (250Hz):
190 mm
3
PISTONPHONE TYPE 4228 CORRECTION:
with DP 0776:
+0.02 dB
TYPICAL CARTRIDGE THERMAL NOISE:
20.0dB (A) 21.4 dB (Lin.)
UPPER LIMIT OF DYNAMIC RANGE:
3% distortion:
>162 dB SPL
MAXIMUM SOUND PRESSURE LEVEL:
171 dB (peak)
OPERATING TEMPERATURE RANGE:
–30 to +150
°
C (–22 to 302
°
F)
can be used up to +300
°
C (572
°
F) but with a
permanent sensitivity change of typically +0.4dB
which stabilises after one hour
OPERATING HUMIDITY RANGE:
0 to 100 % RH (without condensation)
STORAGE TEMPERATURE:
–30 to +70
°
C (–22 to 158
°
F)
TEMPERATURE COEFFICIENT (250Hz):
–0.002 dB/
°
C, typical (for the range –10 to
+50
°
C)
PRESSURE COEFFICIENT (250Hz):
–0.007 dB/kPa, typical
INFLUENCE OF HUMIDITY:
<0.1 dB/100 %RH
VIBRATION SENSITIVITY (<1000 Hz):
Typically 65.5dB equivalent SPL for 1m/s
2
axial
acceleration
MAGNETIC FIELD SENSITIVITY:
Typically 16dB SPL for 80A/m, 50Hz field
ESTIMATED LONG-TERM STABILITY:
>1 000 years/dB at 20
°
C
>1 00 hours/dB at 150
°
C
DIMENSIONS:
Diameter
: 13.2 mm (0.52 in) (with grid)
12.7 mm (0.50 in) (without grid)
Height
: 13.5 mm (0.54 in) (with grid)
12.6 mm (0.50 in) (without grid)
Thread for preamplifier mounting
: 11.7mm –
60 UNS
The data above are valid at 23
°
C, 101.3kPa and
50%RH, unless otherwise specified.