Product Data Sheet: Condenser Microphone Cartridges — Types

Product Data Sheet: Condenser Microphone Cartridges — Types
With compliments
Product Data
Helmut Singer Elektronik
www.helmut-singer.de [email protected]
fon +49 241 155 315
fax +49 241 152 066
Feldchen 16-24 D-52070 Aachen Germany
Condenser Microphone Cartridges — Types 4133 to 4181
USES:
FEATURES:
❍ Precision acoustic measurements
❍ Frequency ranges from 2.6 Hz to 140 kHz
❍ Laboratory reference standards
❍ Dynamic ranges from -34 dB to 180 dB SPL
❍ With sound level meters
❍ Choice of pressure, random or free-field response
❍ In Noise measurement systems satisfying IEC and
ANSI standards
❍ Very wide operating temperature range and low
ambient-temperature coefficient
❍ Electro-acoustic measurement
❍ Supplied with individual calibration charts
❍ Robust construction
❍ High resistance to humidity
❍ Wide range of accessories
Forming a complete range of microphones for accurate acoustic measurements, Brüel & Kjær condenser microphones are precision engineered from
materials selected to give long term
stability and operational reliability.
Their resistance to humidity is very
high, temperature range very wide and
temperature coefficients extremely
small. A robust construction makes
them easy to handle in the field.
Each microphone cartridge is delivered in a protective mahogany box and
supplied with an individual calibration
chart giving the frequency response
and all data necessary for precision
measurements.
family photograph
Introduction
The seventeen condenser microphones in Brüel & Kjær’s traditional
range have been carefully designed
to fulfil the requirements of acoustic
professionals, and supplement the
Brüel & Kjær Falcon™ Range of microphones. You will find that it is not
only the electro-acoustic specifications that are high, but also the mechanical properties.
This
high
standard and attention to detail is a
result of over 40 years leadership in
the field of microphones, coupled with
a critical choice of materials and
craftsmen.
You will also find that these microphones can be used with a wide range
of accessories and equipment, allow-
Brüel & Kjær
B
K
ing you to build up the measurement
systems of your choice without compromising quality or standards.
Microphone Handbook
This data sheet cannot cover in detail
all the aspects of the microphone cartridges and accessories. Detailed in-
formation can be found in the
handbook titled “Condenser Microphones”, available from Brüel & Kjær,
order number 033–0089. This describes in depth the design, theory
and operation of each microphone
cartridge, together with extensive
documentation of its properties. Also
described and illustrated graphically
are the application of accessories and
the influence of environmental fac-
Start
Special/Laboratory Measurements
Extended
Frequency
Range
Audio
High
Type 1
Sound/Intensity Measurement
Very Low
Level Range
0V
Polarization
Voltage
IEC/ANSI Type
Type 2
200 V
Medium
Random
Incidence
+ Pressure
Free-field
Random
Laboratory
Free-field
Freq. Response
Characteristic
4136 1/4"
Coupler
Measurements
ANSI
Use
Pressure
4138 1/8"
General/Industrial Measurement
Main Use
4135 1/4"
Standard
IEC ANSI
Standard
IEC
Laboratory
Standard
4133 1/2"
4145 1"
4180 1/2"
4160 1"
4134 1/2"
4144 1"
4178 1/4"
4181 1/2"
4179 1"
4166 1/2"
4176 1/2"
4165 1/2" 4130 1/2"
4155 1/2"
941774e
Fig.1 Flow chart to help you choose the correct microphone from the Brüel & Kjær standard range of microphones
tors, such as temperature, atmospheric pressure and humidity.
Equalization adjustment
silver wire
Spring arrangement
Selecting a Microphone for
Your Needs
Diaghragm
Capillary tube for pressure
equalization
To make sure you select the right microphone to match you needs, you
will probably have to consider one or
more of the following criteria:
Symmetrical
protection grid
Quartz insulator
Standards (IEC or ANSI)
Environment (lab., industrial, etc.)
Free-, diffuse- or pressure-field
Frequency range
Polarization
By considering these factors and using the flow chart shown in Fig. 1 you
will be able to find the microphone
or group of microphones that suit
your needs. Reference to Table 2 and
to the specifications for each microphone will then enable you to make
the appropriate choice.
General Description
The different cartridges in the traditional Brüel & Kjær range all have
the same basic design, irrespective of
size (see Fig. 2). The smaller diame2
Output terminal
gold
Backplate
170664/1e
Fig.2 Sectional view of a typical microphone cartridge
ters generally provide higher limits
for the frequency and dynamic ranges, at the expense of a lower sensitivity.
Materials of Construction
Depending on the type, the insulator
is made either of silicone-treated
quartz, synthetic sapphire or synthetic ruby to give dimensional stability. The diaphragm consists mainly
of nickel and the backplate and housing are made of high nickel alloys.
This minimises variations in sensitivity with temperature.
Polarization
All types of condenser microphone require an electric field to be present
between the backplate and the dia-
phragm when being used. The
Brüel & Kjær microphones obtain
this field either internally or externally.
The internally charged microphones utilize a pre-polarized chargecarrying “electret” layer which is deposited on the backplate. These microphones are also categorized as 0 V
polarization voltage – meaning the
polarization feed to the preamplifier
needs to be grounded (not floating).
Externally polarized microphones
obtain the charge for the electric field
from a DC power supply connected to
the microphone via the preamplifier.
Charge build-up the backplate is not
instantaneous, due to the high charge
resistance of the preamplifier. Therefore externally polarized microphones
only reach the correct working voltage after about one minute. Before
this time a microphone may not be
within specification.
Artificial Ageing
During production, the microphone
cartridges are subjected to a high
temperature (150°C), forced ageing
process which ensures excellent longterm stability.
The predicted long-term stability is
of the order of 1 dB over several hundred years at room temperature. Although difficult to verify this in
practice, the sensitivities of several
microphone cartridges measured periodically at Brüel & Kjær’s laboratory from 1974 to 1990 changed by only
0.05 dB, confirming the predicted
long term stability.
Static Pressure Equalization
Special care has been taken in the
design of the system for equalization
of the static air pressure between the
inside and outside of the cartridge to
give a low and well-defined lower limiting frequency. There are two types
of pressure equalization used in the
cartridges, side-vented and rear-vented (see Fig. 3 and Fig. 4). 1/2" back
vented types can be used with Dehumidifier UA 0308 in especially humid
environments.
A special case of the rear-vented
types is the microphone Type 4181.
This microphone is designed to be
used as a pair in sound intensity
measurements. A patented two-stage
resistance-compliance network leading to the rear-vent gives very small
phase shifts at low frequencies (less
than 3° down to 10 Hz) and a low
sensitivity to sound pressure at the
vent opening. This allows very accurate intensity measurements to be
Pressure equalization
vent
173140e
Fig.3 Side-vented microphone cartridge
Pressure equalization
vent
173139e
Fig.4 Rear-vented microphone cartridge
1/3 – octave
Noise Level
at 1kHz
3.16 Hz
Noise Level
at 1 kHz
A–weighted
Noise
Level
Lin. Noise Level
20 Hz to 20 kHz
20 Hz to 200 kHz
4135
4136
1438
2633
4144, 4160
4145
4133
4134, 4180
4165
4166
4135
4136
4138
2639
2645
2660
2669
2660
– 40
3 % Distortion 10 % Distortion
Level
Level
2660 + 4179*
– 20
0
20
40
60
80
100
Sound Pressure Level
* In use with 4179 Type 2660 includes + 20 dB gain
120
140
160
dB
180
941773e
Fig.5 Typical dynamic ranges of various Brüel & Kjær condenser microphone and preamplifier assemblies. The upper limit is given for two degrees of distortion at 100 Hz, while
the lower limit indicates the system noise floor for various bandwidths of the associated
measurement equipment. The limits for 3.16 Hz and 1/3 octave bandwidths are valid at
1 kHz only
made close (less than 100 mm) to the
sound source, in very reactive sound
fields and at critical measurement
points.
Free-field Response
or Pressure-field Response
Cartridges are available with either
linear 0°-incidence free-field response
or linear pressure response (1/8″ type
linear pressure response only). When
using a free-field response microphone it should be pointed towards
the sound source. In some applications a pressure response microphone
may be used for free-field measurements if orientated so that the plane
of the diaphragm is parallel to the
direction of the sound. In coupler
measurements a pressure response
microphone is used. In this case no
specific orientation of the microphone
in relation to the sound source is required. The smaller pressure response microphones (1/2", 1/4", 1/8")
can be used for random-incidence
measurements at audio frequencies,
as their frequency responses in this
range are less dependent on the angle
of incidence. 1″ free-field response microphone Type 4145 may also be used
for random-incidence measurements,
when fitted with Random-incidence
Corrector UA 0055.
Measurement of sound intensity is
a special case of pressure measurement. Brüel & Kjær use two identical
microphones mounted at a fixed distance and opposite each other in their
intensity probes. These microphones
(1/4" Type 4178 or 1/2" Type 4181), are
always supplied as a closely phaseand amplitude-matched pair.
Microphone Assemblies
In general a microphone assembly
will consist of a microphone cartridge
and a microphone preamplifier. The
cartridge screws directly onto the
preamplifier housing if both have the
same diameter, or use is made of
adaptors if the diameter is different.
The most usual adaptors to use are
given in the specifications. For unusual diameter-combinations of microphone and preamplifier, please
contact Brüel & Kjær.
All the microphone preamplifiers
are carefully designed to achieve high
input impedance, low output impedance and very low inherent noise.
Typically a preamplifier has 0 dB
gain, an input capacitance of 0.2 pF
and an input impedance between
10 GΩ and 50 GΩ. Frequency responses are flat between 1 Hz and
200 kHz.
For further details of these preamplifiers see product data sheets for
Types 2633, 2639, 2642, 2645, 2660,
2669, 2671, and sound intensity
probes 3545/3548.
Preamplifier Types
Eight different microphone preamplifiers types are available:
Type 2633 is a 1/4" preamplifier.
Type 2639 is a 1/2" preamplifier,
available in two versions: 2639S consisting of the preamplifier together
with accessories delivered in a mahogany case, and 2639T consisting of
the preamplifier alone.
Type 2642 is a low-cost 1/2" preamplifier which is used exclusively with
3
1/2"
Power Supply
Type 2645 is a 1/2" preamplifier
which is similar in design, performance and application to the Type
2639, but also includes an insert-voltage calibration facility for insert-voltage calibration of 1″ and 1/2"
microphones in accordance with
IEC 327 and ANSI S1.10–1966. The
preamplifier may be operated in either driven or grounded shield
modes.
Type 2645 is available in two versions: 2645S with accessories and
2645T without accessories.
Type 2660 has been specially developed as part of a low-noise microphone system consisting of the 2660
and 1″ microphone Type 4179. Together, these instruments constitute
a system for pressure and sound power level measurements of very-lowlevel sources. A three position switch
on the preamplifier allows selection
of 0 dB gain, +20 dB gain or special
“4179” position. The Type 2260 can
also be used for free-field reciprocity
calibration and reducing system
cross-talk due to the switchable 20 dB
gain.
Type 2669 is a 1/2" preamplifier,
available in two versions: 2639B fitted with B&K preamplifier plug and
2669L fitted with LEMO plug.
Type 2671 is a 1/2" Deltatron™
preamplifier for use only with prepolarized microphones.
Type 2668 is a dual preamplifier
used exclusively with matched microphone cartridges in sound intensity
applications.
The stabilized polarization voltage
for the microphone cartridges (200 V)
and the power supply for the microphone preamplifiers are available via
the 7-pin preamplifier input socket
fitted to the range of Brüel & Kjær
measuring amplifiers and frequency
analyzers, to which the microphone
assemblies can be connected directly.
For operation with other equipment and for special applications, a
microphone assembly can be powered
by a Brüel & Kjær power supply.
These power supplies provide the
necessary voltages to the cartridge
and preamplifier via a 7-pin socket
and pass the signal through without
compromising noise or frequency response.
Sound intensity probes are connected to ancillary equipment via 18pin LEMO connectors.
Assembly Response
All specifications in this product data
sheet are open-circuit values, meaning that the cartridges look into an
infinitely high impedance. In practice, however, the microphone cartridges are used together with a
preamplifier which will influence the
response of the total assembly.
The size of the influence depends
on the preamplifier input impedance,
the capacitance of the microphone
(and adaptor), and the attenuation/
amplification of the preamplifier itself. The total response is found by
adding the open circuit response to
the response curves given in the
product data sheet for the microphone preamplifier.
microphone Type 4130 and power
supply Type 2810.
Fig.6 Example calibration chart delivered with the condenser microphone cartridges
4
Preamplifiers typically only influence the cartridge sensitivity by a few
tenths of a dB.
Fig. 5 shows typical dynamic ranges of microphone and preamplifier assembly combinations.
Cartridge Response
The microphone cartridges have welldefined operating characteristics.
Their sensitivities are high in relation to their dimensions and, as can
be seen from Fig. 7 and Fig. 8, their
frequency ranges are very wide.
Individual Calibration
The microphone cartridges fulfil the
requirements of ANSI S1.12–167
“Specifications for Laboratory Standard Microphones”, as indicated in Table 1.
ANSI Type
B & K Type
XL
4133, 4134, 4144, 4145,
4160, 4165, 4166
L
4144, 4145, 4160
M
4133, 4134, 4135, 4136,
4180
H
4135, 4136, 4138
Table1 Classification of Brüel & Kjær
condenser microphones under ANSI
S1.12–1967
Each cartridge is supplied with an
individual calibration chart which includes a complete frequency response
curve recorded by the electrostatic actuator method. In the case of the free-
free-field response at a particular angle of incidence. Free-field corrections
represent the increase of sound pressure caused by diffraction of the
sound waves around the microphone
and are only significant at high frequencies where the wavelength is
comparable with the external dimensions of the microphone. The free-
field cartridges, the 0° incidence freefield response is also given.
An example calibration chart for
the 1″ cartridge Type 4145 is shown
in Fig. 6.
Free-field Corrections
The free-field corrections are added
to the pressure (actuator) response of
the microphone in order to obtain the
field curves for diverse angles of incidence are given in Fig. 9. It can be
seen that the random incidence (diffuse-field) corrections are very small
at audio frequencies.
A microphone with a flat pressurefrequency characteristic should be
preferred for measurements in diffuse fields, for example in most in-
dB re 1 V/Pa
– 20
mV/Pa
4160
Types 4144, 4160 and 4166
50
4166
– 30
4144
20
Types 4134 and 4180
– 40
10
5
– 50
2
Type 4136
Type 4138
– 60
0.5
– 70
0.2
– 80
0.02 Hz 0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1 kHz 2
5
10
20
50
Frequency
100
0.1
200
172503/7e
Fig.7 Typical frequency responses of the different pressure response microphones recorded by means of the electrostatic actuator method
mV/Pa
dB re 1 V/Pa
– 10
Type 4179 with Type 2660
– 20
100
Types 4145 and 4165
4165
50
– 30
4145
20
Type 4133
– 40
10
4133
5
Type 4135
– 50
2
– 60
0.5
– 70
0.2
– 80
0.02 Hz 0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1 kHz 2
5
10
20
50
Frequency
100
0.1
200
832028/1e
Fig.8 Typical 0° incidence free-field frequency responses of the different free-field microphones recorded by means of the electrostatic
actuator method and corrected according to the curves shown in Fig. 9
5
The Weatherproof Microphone Unit
Type 4184 is for use in permanent
and semi-permanent or portable
noise-monitoring systems. The unit is
fully rotational about its vertical axis
without any undesirable reflections
Special Microphones
Probe Microphone Type 4182
The Probe Microphone Type 4182 has
a choice of probe tubes, stiff or flexi-
Type number
4130 4133 4134 4135 4136 4138 4144 4145 4155 4160 4165 4166 4176 4178 4179 4180 4181
Nominal Diameter
1/ "
2
1/ "
2
1/ "
2
1/
Frequency
Response
Characteristic*
FF
&
RI
FF
P
&
RI
FF
&
RI
Open Circuit
Frequency
Response† (2 dB)
Open dBre.1V/Pa
Circuit
Sensitivity mV/Pa
Lower Limiting
Frequency (–3 dB)
from its casing affecting the noise
measurements being done.
The unit is based on a probe tube
system which has allowed the microphone cartridge to be installed within
the casing of the unit itself.
For further information on these
products please refer to the relevant
product data sheets.
ble, making the microphone very
adaptable for measurements in awkward places. Physically it is small
and light, with a durable construction. The probe microphone is useful
in a range from about 1 Hz to 22 kHz.
Weatherproof Microphone Unit
Type 4184
door measurements. However, by
mounting specially designed correctors (nose cones) on the cartridges,
the response of the Type 4145 and all
1/2" and 1/4" free-field microphones
can be made practically independent
of angle of incidence
4"
1/ "
4
1/ "
8
1"
1"
1/ "
2
1"
1/ "
2
1/ "
2
1/ "
2
1/ "
4
1"
1/ "
2
1/ "
2
P
P
&
RI
P
FF
FF
P
FF
P
&
RI
FF
&
RI
FF
FF
P
FF
6.5 Hz 4 Hz
4Hz
4 Hz
4 Hz 6.5Hz 2.6 Hz 2.6 Hz 4Hz
to
to
to
to
to
to
to
to
to
8 kHz 40 kHz 20 kHz 100kHz 70kHz 140kHz 8kHz 18kHz 16kHz
up to
8kHz
±1dB
2.6 Hz 2.6 Hz 6.5 Hz 4 Hz 10 Hz up to 0.3Hz
to
to
to
to
to
20kHz
to
20kHz 10kHz 12kHz 100kHz 10kHz ±1.5dB 16kHz
–40
–38
–38
–48
–56
–60
–26
–26
–26
–26.5
–26
–26
–26
–48
–20
–38
–39
10
12.5
12.5
4
1.6
1.0
50
50
50
47
50
50
50
4
100
12.5
11.2
1 Hz
1 Hz
1Hz
1 Hz
1 Hz 0.5 Hz 0.3 Hz 5 Hz to 1Hz to 0.14Hz
0.5 Hz 1 Hz
1Hz 0.3 Hz 0.3Hz 0.05Hz 1Hz
3Hz
typ.
to 5 Hz to 3 Hz to 3 Hz to 3 Hz to 3 Hz to 5 Hz to 2 Hz to 2 Hz to 3 Hz to 2 Hz to 2 Hz to 2 Hz to 5 Hz to 3Hz 7Hz
Cartridge Thermal
Noise (dB(A))
13.5
20
18
29.5
30.5
—
9.5
10
14.5
9.5
14.5
15
13.5
29.5
–5.5
18
20
Open Circuit
Distortion Limit,
3% at 100 Hz
(dB re. 20μPa)
>142
>160
>160
>164
>172
>168
>146
>146
>146
>146
>146
>146
>142
>164
>140
>160
>160
Resonance
Frequency‡ (kHz)
12.5
24
23
100
70
160
8
11
14
8.5
14
11
12.5
95
7
23
24
Polarization
Voltage (V)
28
200
200
200
200
200
200
200
0
200
200
200
0
200
200
200
200
Polarized Cartridge
Capacitance at
250 Hz (pF)
14
18
18.5
6.4
6.4
3.5
55
66
15
55
19
21
12.5
6.4
40
17.5
19.5
Mean Temperature
Coefficient (at
250 Hz) –10°C to
+50°C (dB/°C)
Equivalent Air
Volume at 250 Hz,
101.3 kPa (mm3)
Influence of Static
Pressure at 250 Hz
(dB/kPa)
–0.007 –0.002 –0.002 –0.01
50
10
10
0.6
–0.01
0.25
–0.01 –0.003 –0.002 –0.006 –0.003 –0.007 –0.007 –0.004 –0.005 –0.004 –0.002 –0.002
0.1
148
130
40
148
40
–0.02 –0.007 –0.007 –0.007 –0.003 –0.01 –0.016 –0.015 –0.01 –0.016 –0.01
40
–0.01
50
400
9.3
—
–0.02 –0.007 –0.016 –0.007 –0.007
Table 2 Comparison of most important specifications for traditional microphone range
* P = Pressure, FF = Free-field 0° Incidence, RI = Random Incidence
† Not for Random Incidence
‡ 90° phase shift of pressure characteristic
With compliments
Helmut Singer Elektronik
6
—
www.helmut-singer.de [email protected]
fon +49 241 155 315
fax +49 241 152 066
Feldchen 16-24 D-52070 Aachen Germany
Correction to be added to Actuator Response (dB)
14
0°
30°
8
6
60°
4
2
0
90°
–2
Random
150°
120°
–4
–8
– 10
1
2
3
4
5 6 7 8 910
15
Frequency (kHz)
20
30
40 50
801057/1e
14
Free Field Corrections for
Microphones 4133, 4134,
4147 and 4149
with Protection Grid
10
0°
30°
8
6
4
2
Random
0
90°
–2
–4
120°
θ°
–6
150°
–8
– 10
2
3
4
5 6 7 8 910
15
20
30
40 50 60 70
Frequency (kHz)
100
801059/1e
14
Correction to be added to Actuator Response (dB)
8
6
Free Field Corrections for
Microphones 4155 and 4165
with Protection Grid
0°
30°
4
60°
Random
2
0
90°
–2
θ°
180°
150°
120°
–4
–6
1
2
3
4
5 6 7 8 910
15
Frequency (kHz)
10
8
6
20
30
40 50
801061/1e
0°
Free Field Corrections for
Microphone 4165
with Protection Grid
30°
4
60°
Random
2
0
90°
–2
θ°
180°
150°
120°
–4
–6
1
2
3
4
5 6 7 8 910
15
Frequency (kHz)
20
30
40 50
941789e
60°
12
10
Free Field Corrections for
Microphone 4138 with
Protection Grid
30°
6
4
Random
2
90°
0
180°
120°
–4
150°
θ°
–8
– 10
4
5 6 7 8 910
15
12
10
Free Field Corrections for
Microphones 4135 and 4136
with Protection Grid
20
30
40 50 60 70
Frequency (kHz)
100
0°
30°
8
60°
Random
6
4
90°
2
180°
150°
0
120°
–2
θ°
–4
–6
4
5 6 7 8 910
15
20
30
40 50 60 70
100
150 200
Frequency (kHz)
60°
–6
14
0°
8
–2
Correction to be added to Actuator Response (dB)
Correction to be added to Actuator Response (dB)
12
10
θ°
–6
Correction to be added to Actuator Response (dB)
10
Free Field Corrections for
Microphones 4144 and 4145
with Protection Grid
150 200
Correction to be added to Actuator Response (dB)
Correction to be added to Actuator Response (dB)
12
12
10
801068/1e
0°
Free Field Corrections for
Microphone 4176
30°
60°
8
6
4
2
Random
180°
90°
150°
0
120°
–2
θ°
–4
–6
1
801070/1e
2
3
4
5 6 7 8 910
Frequency (kHz)
15
20
30
40 50
820805/1e
Fig.9 Free-field correction curves for the various Brüel &Kjær condenser microphones
7
Specifications and Ordering Information Type 4130
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
3% DISTORTION LIMIT (UPPER):
> 142 dB re.20 μPa at 100 Hz
INFLUENCE OF MAGNETIC FIELD:
30 dB re. 20 μPa in 50 Hz, 80 A/m field
TYPICAL USES:
Low-cost, simple and flexible general purpose
sound measurement systems
DIAPHRAGM RESONANCE FREQUENCY:
12.5 kHz (90° phase-shift)
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
POLARIZATION VOLTAGE:
External: 28 V nominal, maximum 120 V
MAXIMUM OPERATING TEMPERATURE:
100°C (70°C with random-incidence corrector)
DIMENSIONS:
Diameter: 13.2 mm (0.52 in) (with grid)
12.7 mm (0.50 in) (without grid)
14.35 mm (0.56 in) (with corrector)
Height:
14.9 mm (0.59 in)
16.7 mm (0.66 in) (with corrector)
Thread for preamplifier mounting: 11.7 mm –
60 UNS
MEAN TEMPERATURE COEFFICIENT:
–0.007 dB/°C (-10°C < t < +50°C)
Ordering Information
NOMINAL DIAMETER:
1/2”
FREQUENCY RESPONSE
CHARACTERISTICS:
Free-field, 0° incidence
Random-incidence (when fitted with Random-incidence Corrector DZ 9566)
POLARIZED CARTRIDGE CAPACITANCE*:
14 pF at 250 Hz and 28 V polarization
OPEN CIRCUIT FREQUENCY RESPONSE*:
0° incidence free-field response:
6.5 Hz to 8 kHz: ±2 dB
5 Hz to 12.5kHz: ±3 dB
In accordance with IEC 651 Type 2
Random-Incidence Response:
In accordance with ANSI S1.4–1983, Type 2
EQUIVALENT AIR VOLUME:
50 mm3 (250 Hz)
Type 4130
EXPECTED LONG-TERM STABILITY:
> 250 years/dB at 20°C
Includes the following accessory:
DZ 9566
Random-Incidence Corrector
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–40 ± 1.5 dB re.1 V/Pa, 10 mV/Pa
INFLUENCE OF STATIC PRESSURE:
–0.02 dB/kPa, typical
LOWER LIMITING FREQUENCY (-3 dB):
0.5 Hz to 5 Hz (vent exposed to sound)
INFLUENCE OF VIBRATION:
60 dB re. 20 μPa and 1 ms-2 axial vibration
Preamplifier and Power Supply:
(For specifications see separate product data
sheet, number BP 0020)
1/2” Microphone Preamplifier
Type 2642
Type 2810
Microphone Power Supply
* Individually calibrated
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
CARTRIDGE THERMAL NOISE:
13.5 dB(A)
1/2”
Microphone
Specifications and Ordering Information Type 4133
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
DIAPHRAGM RESONANCE FREQUENCY:
24 kHz (90° phase-shift)
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
TYPICAL USES:
General electroacoustic purposes, loudspeaker
and microphone measurements
POLARIZATION VOLTAGE:
External: 200 V
DIMENSIONS:
Diameter: 13.2 mm (0.52 in) (with grid)
12.7 mm (0.50 in) (without grid)
Height:
12.6 mm (0.49 in) (with grid)
11.7 mm (0.46 in) (without grid)
Thread for preamplifier mounting: 11.7 mm –
60 UNS
NOMINAL DIAMETER:
1/2”
FREQUENCY RESPONSE
CHARACTERISTIC:
Free-field, 0° incidence
OPEN CIRCUIT FREQUENCY RESPONSE*:
0° incidence free-field response:
4 Hz to 40 kHz: ±2 dB
In accordance with IEC 651 Type 0, Type 1 and
ANSI S1.12, Type M
OPEN CIRCUIT SENSITIVITY (1000 Hz)*:
–38 dB re.1 V/Pa, 12.5 mV/Pa
LOWER LIMITING FREQUENCY (-3 dB):
1 Hz to 3 Hz (vent exposed to sound)
CARTRIDGE THERMAL NOISE:
20 dB(A)
3% DISTORTION LIMIT (UPPER):
> 160 dB re.20 μPa at 100 Hz
8
POLARIZED CARTRIDGE CAPACITANCE*:
18 pF at 250 Hz
MEAN TEMPERATURE COEFFICIENT:
–0.002 dB/°C (250 Hz, -10°C < t < +50°C)
EQUIVALENT AIR VOLUME:
10 mm3 (250 Hz)
Ordering Information
EXPECTED LONG-TERM STABILITY:
> 1000 years/dB at 20°C
>2 hours/dB at 150°C
Type 4133
INFLUENCE OF STATIC PRESSURE:
–0.007 dB/kPa, typical
INFLUENCE OF VIBRATION:
67 dB re. 20 μPa and 1 ms-2 axial vibration
INFLUENCE OF MAGNETIC FIELD:
20 dB re. 20 μPa in 50 Hz, 80 A/m field
* Individually calibrated
1/2”
Microphone
Suitable Preamplifiers:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
Specifications and Ordering Information Type 4134
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
DIAPHRAGM RESONANCE FREQUENCY:
23 kHz (90° phase-shift)
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
TYPICAL USES:
Medium- and high-level measurements in the
audio range and flush mounted measurements
of noise. Especially suitable where good random-incidence characteristics are required
POLARIZATION VOLTAGE:
External: 200 V
POLARIZED CARTRIDGE CAPACITANCE*:
18.5 pF at 250 Hz
NOMINAL DIAMETER:
1/2”
MEAN TEMPERATURE COEFFICIENT:
–0.002 dB/°C (-10°C < t < +50°C)
DIMENSIONS:
Diameter: 13.2 mm (0.52 in) (with grid)
12.7 mm (0.50 in) (without grid)
Height:
12.6mm (0.49 in) (with grid)
11.5 mm (0.45 in) (without grid)
Thread for preamplifier mounting: 11.7 mm –
60 UNS
FREQUENCY RESPONSE
CHARACTERISTICS:
Random-Incidence and Pressure
EQUIVALENT AIR VOLUME:
10 mm3 (250 Hz)
Ordering Information
EXPECTED LONG-TERM STABILITY:
> 1000 years/dB at 20°C
Type 4134
OPEN CIRCUIT FREQUENCY RESPONSE*:
4 Hz to 20 kHz: ±2 dB
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–38 ± 1.5 dB re.1 V/Pa, 12.5 mV/Pa
LOWER LIMITING FREQUENCY (-3 dB):
1 Hz to 3 Hz
CARTRIDGE THERMAL NOISE:
18 dB(A)
3% DISTORTION LIMIT (UPPER):
> 160 dB re.20 μPa at 100 Hz
INFLUENCE OF STATIC PRESSURE:
–0.007 dB/kPa, typical
INFLUENCE OF VIBRATION:
67 dB re. 20 μPa and 1 ms-2 axial vibration
INFLUENCE OF MAGNETIC FIELD:
20 dB re. 20 μPa in 50 Hz, 80 A/m field
1/2”
Microphone
Suitable Preamplifiers:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
1
Type 2669L /2” Microphone Preamplifier with
LEMO connector
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
* Individually calibrated
Specifications and Ordering Information Type 4135
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
DIAPHRAGM RESONANCE FREQUENCY:
100 kHz (90° phase-shift)
TYPICAL USES:
General high-level, high-frequency measurements and model work
POLARIZATION VOLTAGE:
External: 200 V
NOMINAL DIAMETER:
1/4”
FREQUENCY RESPONSE
CHARACTERISTIC:
Free-field and Random
POLARIZED CARTRIDGE CAPACITANCE*:
6.4 pF at 250 Hz
DIMENSIONS:
Diameter: 7 mm (0.27 in) (with grid)
6.35 mm (0.25in) (without grid)
Height:
10.5 mm (0.41 in) (with grid)
9mm (0.35 in) (without grid)
Thread for preamplifier mounting: 5.7 mm –
60 UNS
MEAN TEMPERATURE COEFFICIENT:
–0.01 dB/°C (250 Hz, -10°C < t < +50°C)
Ordering Information
EQUIVALENT AIR VOLUME:
0.6 mm3 (250 Hz)
Type 4135
OPEN CIRCUIT FREQUENCY RESPONSE*:
0° incidence free-field response:
4 Hz to 100 kHz: ±2 dB
INFLUENCE OF STATIC PRESSURE:
–0.007 dB/kPa, typical
OPEN CIRCUIT SENSITIVITY (1000 Hz)*:
–48 dB re.1 V/Pa, 4 mV/Pa
INFLUENCE OF VIBRATION:
59 dB re. 20 μPa and 1 ms-2 axial vibration
LOWER LIMITING FREQUENCY (-3 dB):
0.3 Hz to 3 Hz (vent exposed to sound)
INFLUENCE OF MAGNETIC FIELD:
30 dB re. 20 μPa in 50 Hz, 80 A/m field
CARTRIDGE THERMAL NOISE:
29.5 dB(A)
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
3% DISTORTION LIMIT (UPPER):
> 164 dB re.20 μPa at 100 Hz
* Individually calibrated
1/4”
Microphone
Suitable Preamplifiers:
1/4” Microphone Preamplifier
Type 2633
or the following with adaptor UA 0035:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
9
Specifications and Ordering Information Type 4136
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
DIAPHRAGM RESONANCE FREQUENCY:
70 kHz (90° phase-shift)
TYPICAL USES:
Measurements in narrow spaces and small cavities, high-level and high-frequency measurements.
Also
used
in
flush
mounted
measurements
POLARIZATION VOLTAGE:
External: 200 V
POLARIZED CARTRIDGE CAPACITANCE*:
6.4 pF at 250 Hz
NOMINAL DIAMETER:
1/4”
MEAN TEMPERATURE COEFFICIENT:
–0.01 dB/°C (-10°C < t < +50°C)
Ordering Information
FREQUENCY RESPONSE
CHARACTERISTICS:
Pressure
EQUIVALENT AIR VOLUME:
.25 mm3 (250 Hz)
Type 4136
OPEN CIRCUIT FREQUENCY RESPONSE*:
4 Hz to 70 kHz: ±2 dB
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–56 ± 1.5 dB re.1 V/Pa, 1.6 mV/Pa
LOWER LIMITING FREQUENCY (-3 dB):
0.3 Hz to 3 Hz
CARTRIDGE THERMAL NOISE:
30.5 dB(A)
3% DISTORTION LIMIT (UPPER):
> 172 dB re.20 μPa at 100 Hz
INFLUENCE OF STATIC PRESSURE:
–0.0025 dB/kPa, typical
INFLUENCE OF VIBRATION:
69 dB re. 20 μPa and 1 ms-2 axial vibration
INFLUENCE OF MAGNETIC FIELD:
38 dB re. 20 μPa in 50 Hz, 80 A/m field
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
DIMENSIONS:
Diameter: 7 mm (0.27 in) (with grid)
6.35 mm (0.25in) (without grid)
Height:
10.5 mm (0.41 in) (with grid)
9mm (0.35 in) (without grid)
Thread for preamplifier mounting: 5.7 mm –
60 UNS
1/4”
Microphone
Suitable Preamplifiers:
1/4” Microphone Preamplifier
Type 2633
or the following with adaptor UA 0035:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
1
Type 2669L /2” Microphone Preamplifier with
LEMO connector
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
* Individually calibrated
Specifications and Ordering Information Type 4138
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
DIAPHRAGM RESONANCE FREQUENCY:
160 kHz (90° phase-shift)
TYPICAL USES:
High-level and very high-frequency measurements, or for pulse measurements. Also especially suitable for applications which require a
high degree of spatial resolution or where space
is limited, e.g. model testing
POLARIZATION VOLTAGE:
External: 200 V
NOMINAL DIAMETER:
1/8”
FREQUENCY RESPONSE
CHARACTERISTICS:
Random-Incidence and Pressure
OPEN CIRCUIT FREQUENCY RESPONSE*:
6.5 Hz to 140 kHz: ±2 dB
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–60 ± 1.5 dB re.1 V/Pa, 1.0 mV/Pa
LOWER LIMITING FREQUENCY (-3 dB):
0.05 Hz to 5 Hz
3% DISTORTION LIMIT (UPPER):
> 168 dB re.20 μPa at 100 Hz
POLARIZED CARTRIDGE CAPACITANCE*:
3.5 pF at 250 Hz
MEAN TEMPERATURE COEFFICIENT:
–0.01 dB/°C (-10°C < t < +50°C)
EQUIVALENT AIR VOLUME:
0.1 mm3 (250 Hz)
INFLUENCE OF STATIC PRESSURE:
–0.01 dB/kPa, typical
INFLUENCE OF VIBRATION:
58 dB re. 20 μPa and 1 ms-2 axial vibration
INFLUENCE OF MAGNETIC FIELD:
40 dB re. 20 μPa in 50 Hz, 80 A/m field
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
* Individually calibrated
10
DIMENSIONS:
Diameter: 3.5mm (0.14 in) (with grid)
3.175 mm (0.12 in) (without grid)
Height:
6.7mm (0.26 in) (with grid)
6 mm (0.23 in) (without grid)
Thread for preamplifier mounting: M3x0.2
Ordering Information
Type 4138
1/8”
Microphone
Suitable Preamplifiers:
1/4” Microphone Preamplifier with
Type 2633
Adaptor UA 0160
or the following with Adaptor UA 0036:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
Specifications and Ordering Information Type 4144
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
DIAPHRAGM RESONANCE FREQUENCY:
8 kHz (90° phase-shift)
TYPICAL USES:
Coupler measurements, audiometer calibration,
low-frequency and low-level measurements and
as a laboratory standard
POLARIZATION VOLTAGE:
External: 200 V
NOMINAL DIAMETER:
1”
FREQUENCY RESPONSE
CHARACTERISTICS:
Pressure
POLARIZED CARTRIDGE CAPACITANCE*:
55 pF at 250 Hz
DIMENSIONS:
Diameter: 23.77mm (0.92in) (with grid)
23.77 mm (0.92 in) (without grid)
Height:
19mm (0.74 in) (with grid)
17 mm (0.66 in) (without grid)
Thread for preamplifier mounting: 23.11 mm
– 60 UNS
MEAN TEMPERATURE COEFFICIENT:
–0.003dB/°C (-10°C < t < +50°C)
Ordering Information
EQUIVALENT AIR VOLUME:
148 mm3 (250 Hz)
Type 4144
OPEN CIRCUIT FREQUENCY RESPONSE*:
2.6 Hz to 8 kHz: ±2 dB
EXPECTED LONG-TERM STABILITY:
> 1000 years/dB at 20°C
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–26 ± 1.5 dB re.1 V/Pa, 50 mV/Pa
INFLUENCE OF STATIC PRESSURE:
–0.016 dB/kPa, typical
LOWER LIMITING FREQUENCY (-3 dB):
1 Hz to 2 Hz
INFLUENCE OF VIBRATION:
67 dB re. 20 μPa and 1 ms-2 axial vibration
CARTRIDGE THERMAL NOISE:
9.5 dB(A)
INFLUENCE OF MAGNETIC FIELD:
18 dB re. 20 μPa in 50 Hz, 80 A/m field
3% DISTORTION LIMIT (UPPER):
> 146 dB re.20 μPa at 100 Hz
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
* Individually calibrated
1” Microphone
Suitable Preamplifiers:
1/2” Microphone Preamplifier with
Type 2639
Adaptor DB 0375
1/2” Microphone Preamplifier with
Type 2645
Adaptor UA 0786
1/2” Low-level Microphone
Type 2660
Preamplifier with Adaptor
DB 0375
1
Type 2669B /2” Microphone Preamplifier with
Adaptor DB 0375
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector with Adaptor
DB 0375
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
Specifications and Ordering Information Type 4145
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
DIAPHRAGM RESONANCE FREQUENCY:
11 kHz (90° phase-shift)
TYPICAL USES:
Low-level measurements and laboratory use
POLARIZATION VOLTAGE:
External: 200 V
NOMINAL DIAMETER:
1”
POLARIZED CARTRIDGE CAPACITANCE*:
66 pF at 250 Hz
FREQUENCY RESPONSE
CHARACTERISTIC:
Free-field, 0° incidence
MEAN TEMPERATURE COEFFICIENT:
–0.002 dB/°C (250 Hz, -10°C < t < +50°C)
Ordering Information
EQUIVALENT AIR VOLUME:
130 mm3 (250 Hz)
Type 4145
OPEN CIRCUIT FREQUENCY RESPONSE*:
0° incidence free-field response:
2.6 Hz to 18 kHz: ±2 dB
In accordance with IEC 651 Type 0, Type 1 and
ANSI S1.12, Type M
EXPECTED LONG-TERM STABILITY:
> 1000 years/dB at 20°C
>2 hours/dB at 150°C
OPEN CIRCUIT SENSITIVITY (1000 Hz)*:
–26 dB re.1 V/Pa, 50mV/Pa
INFLUENCE OF STATIC PRESSURE:
–0.015 dB/kPa, typical
LOWER LIMITING FREQUENCY (-3 dB):
1 Hz to 2 Hz (vent exposed to sound)
INFLUENCE OF VIBRATION:
67 dB re. 20 μPa and 1 ms-2 axial vibration
CARTRIDGE THERMAL NOISE:
10 dB(A)
INFLUENCE OF MAGNETIC FIELD:
18 dB re. 20 μPa in 50 Hz, 80 A/m field
3% DISTORTION LIMIT (UPPER):
> 146 dB re.20 μPa at 100 Hz
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
DIMENSIONS:
Diameter: 23.77mm (0.92in) (with grid)
23.77 mm (0.92 in) (without grid)
Height:
19mm (0.74 in) (with grid)
17 mm (0.66 in) (without grid)
Thread for preamplifier mounting: 23.11 mm
– 60 UNS
1” Microphone
Suitable Preamplifiers:
1/2” Microphone Preamplifier with
Type 2639
Adaptor DB 0375
1/2” Microphone Preamplifier with
Type 2645
Adaptor UA 0786
1/2” Low-level Microphone
Type 2660
Preamplifier with Adaptor
DB 0375
Type 2669B 1/2” Microphone Preamplifier with
Adaptor DB 0375
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector with Adaptor
DB 0375
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
* Individually calibrated
11
Specifications and Ordering Information Type 4155
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
POLARIZATION VOLTAGE:
External: 0 V
TYPICAL USES:
As a sound level meter microphone
POLARIZED CARTRIDGE CAPACITANCE*:
15 pF at 250 Hz
12.7 mm (0.50 in) (without grid)
17.3mm (0.67 in) (with grid)
16.2 mm (0.63 in) (without grid)
Thread for preamplifier mounting: 11.7 mm –
60 UNS
NOMINAL DIAMETER:
1/2”
MEAN TEMPERATURE COEFFICIENT:
–0.006 dB/°C (-10°C < t < +50°C)
Ordering Information
FREQUENCY RESPONSE
CHARACTERISTICS:
Free Field
EQUIVALENT AIR VOLUME:
40 mm3 (250 Hz)
Type 4155
OPEN CIRCUIT FREQUENCY RESPONSE*:
4 Hz to 16 kHz: ±2 dB, 0° incidence in accordance with IEC 651 Type 1
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–26 ± 2 dB re.1 V/Pa, 50 mV/Pa
LOWER LIMITING FREQUENCY (-3 dB):
1 Hz to 3 Hz
CARTRIDGE THERMAL NOISE:
14.5 dB(A)
3% DISTORTION LIMIT (UPPER):
> 146 dB re.20 μPa at 100 Hz
DIAPHRAGM RESONANCE FREQUENCY:
14 kHz (90° phase-shift)
EXPECTED LONG-TERM STABILITY:
> 400 years/dB at 20°C
INFLUENCE OF STATIC PRESSURE:
–0.01 dB/kPa, typical
INFLUENCE OF VIBRATION:
60 dB re. 20 μPa and 1 ms-2 axial vibration
INFLUENCE OF MAGNETIC FIELD:
30 dB re. 20 μPa in 50 Hz, 80 A/m field
INFLUENCE OF HUMIDITY:
0.004 dB / %RH
DIMENSIONS:
Diameter: 13.1 mm (0.52 in) (with grid)
Height:
1/2”
Microphone
Suitable Preamplifiers:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector
1/2” Deltatron™ Preamplifier
Type 2671
Note: The polarization voltage feed to the
preamplifier must be grounded and not allowed
to float.
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
* Individually calibrated
Specifications and Ordering Information Type 4160
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
See also separate Product Data Sheet, order
number BP 0459, for more detailed information
TYPICAL USES:
Laboratory standard, medium- and low-frequency measurement, coupler measurements. The
Type 4160 conforms to IEC 327, IEC 402,
ANSI S1.12–1966 (and revisions), JIS C 5515
and IEC draft standard for 1” laboratory standard
microphones type LS1 P
NOMINAL DIAMETER:
1”
FREQUENCY RESPONSE
CHARACTERISTIC:
Pressure
OPEN CIRCUIT FREQUENCY RESPONSE*:
Up to 8 kHz: ±1 dB
OPEN CIRCUIT SENSITIVITY (1000 Hz)*:
–26.5 dB re.1 V/Pa, 47 mV/Pa
LOWER LIMITING FREQUENCY (-3 dB):
1 Hz to 2Hz (vent exposed to sound)
CARTRIDGE THERMAL NOISE:
9.5 dB(A)
12
3% DISTORTION LIMIT (UPPER):
> 146 dB re.20 μPa at 100 Hz
DIAPHRAGM RESONANCE FREQUENCY:
8.5 kHz (90° phase-shift)
POLARIZATION VOLTAGE:
External: 200 V
POLARIZED CARTRIDGE CAPACITANCE*:
55 pF at 250 Hz
INFLUENCE OF HUMIDITY:
0.0025 dB / 100%RH (due to variation in air stiffness)
DIMENSIONS:
Diameter: 23.77 mm (0.92 in)
Height:
19.35 mm (0.75in) (with grid)
19 mm (0.74 in) (without grid)
Thread for preamplifier mounting: 23.11 mm
– 60 UNS
MEAN TEMPERATURE COEFFICIENT:
–0.003 dB/°C (250 Hz, -10°C < t < +50°C)
Ordering Information
EQUIVALENT AIR VOLUME:
148 mm3 ±30 mm3 (250 Hz)
Type 4160
EXPECTED LONG-TERM STABILITY:
> 1000 years/dB at 20°C
INFLUENCE OF STATIC PRESSURE:
–0.016 dB/kPa, typical
INFLUENCE OF VIBRATION:
67 dB re. 20 μPa and 1 ms-2 axial vibration
INFLUENCE OF MAGNETIC FIELD:
18 dB re. 20 μPa in 50 Hz, 80 A/m field
* Individually calibrated
1/2”
Microphone
Suitable Preamplifiers:
1/2” Microphone Preamplifier with
Type 2639
Adaptor DB 0375
1/2” Microphone Preamplifier with
Type 2645
Adaptor UA 0786
Type 2669B 1/2” Microphone Preamplifier with
Adaptor DB 0375
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector with Adaptor
DB 0375
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
Specifications and Ordering Information Type 4165
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
3% DISTORTION LIMIT (UPPER):
> 146 dB re.20 μPa at 100 Hz
INFLUENCE OF HUMIDITY:
0.004 dB / %RH
TYPICAL USES:
General sound measurements, and for standardized noise measurements in accordance with
IEC and ISO standards. The Type 4165 has a
similar sensitivity to a 1” microphone, is more
omnidirectional and may therefore be used as a
substitute 1” microphone where disturbance to
the sound field is to be minimised. Back venting
allows the use of dehumidifier UA 0308
DIAPHRAGM RESONANCE FREQUENCY:
14 kHz (90° phase-shift)
DIMENSIONS:
Diameter: 13.2mm (0.51 in) (with grid)
12.7mm (0.49 in) (without grid)
Height:
16.3mm (0.63 in) (with grid)
15.2 mm (0.59 in) (without grid)
Thread for preamplifier mounting: 11.7 mm –
60 UNS
NOMINAL DIAMETER:
1/2”
FREQUENCY RESPONSE
CHARACTERISTICS:
Free-field, 0° incidence
OPEN CIRCUIT FREQUENCY RESPONSE*:
2.6 Hz to 20 kHz: ±2 dB
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–26 ±1.5 dB re.1 V/Pa, 50 mV/Pa
LOWER LIMITING FREQUENCY (-3 dB):
1 Hz to 2Hz
CARTRIDGE THERMAL NOISE:
14.5 dB(A)
POLARIZATION VOLTAGE:
External: 200 V
POLARIZED CARTRIDGE CAPACITANCE*:
19 pF at 250 Hz
MEAN TEMPERATURE COEFFICIENT:
–0.0007 dB/°C (-10°C < t < +50°C)
Ordering Information
EQUIVALENT AIR VOLUME:
40mm3 (250 Hz)
Type 4165
EXPECTED LONG-TERM STABILITY:
> 600years/dB at 20°C
INFLUENCE OF STATIC PRESSURE:
–0.01 dB/kPa, typical
INFLUENCE OF VIBRATION:
60 dB re. 20 μPa and 1 ms-2 axial vibration
INFLUENCE OF MAGNETIC FIELD:
30 dB re. 20 μPa in 50 Hz, 80 A/m field
1/2”
Microphone
Suitable Preamplifiers:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
* Individually calibrated
Specifications and Ordering Information Type 4166
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
3% DISTORTION LIMIT (UPPER):
> 146 dB re.20 μPa at 100 Hz
INFLUENCE OF HUMIDITY:
0.004 dB / %RH
TYPICAL USES:
General random-incidence measurements, and
for standardized noise measurements in accordance with ANSI standards. The Type 4166 has
a similar sensitivity to a 1” microphone, is more
omnidirectional and may therefore be used as a
substitute 1” microphone where disturbance to
the sound field is to be minimised. Back venting
allows the use of dehumidifier UA 0308
DIAPHRAGM RESONANCE FREQUENCY:
11 kHz (90° phase-shift)
DIMENSIONS:
Diameter: 13.2 mm (0.52 in) (with grid)
12.7 mm (0.50 in) (without grid)
Height:
16.3 mm (0.63 in) (with grid)
15.2mm (0.59 in) (without grid)
Thread for preamplifier mounting: 11.7 mm –
60 UNS
NOMINAL DIAMETER:
1/2”
FREQUENCY RESPONSE
CHARACTERISTIC:
Random-incidence and Pressure
OPEN CIRCUIT FREQUENCY RESPONSE*:
0° incidence free-field response:
2.6 Hz to 10kHz: ±2 dB
POLARIZATION VOLTAGE:
External: 200 V
POLARIZED CARTRIDGE CAPACITANCE*:
21 pF at 250 Hz
MEAN TEMPERATURE COEFFICIENT:
–0.0007 dB/°C (250 Hz, -10°C < t < +50°C)
Ordering Information
EQUIVALENT AIR VOLUME:
40 mm3 (250 Hz)
Type 4166
EXPECTED LONG-TERM STABILITY:
> 600years/dB at 20°C
INFLUENCE OF STATIC PRESSURE:
–0.01 dB/kPa, typical
OPEN CIRCUIT SENSITIVITY (1000 Hz)*:
–26 dB re.1 V/Pa, 50mV/Pa
INFLUENCE OF VIBRATION:
60 dB re. 20 μPa and 1 ms-2 axial vibration
LOWER LIMITING FREQUENCY (-3 dB):
1 Hz to 2 Hz (vent exposed to sound)
INFLUENCE OF MAGNETIC FIELD:
30 dB re. 20 μPa in 50 Hz, 80 A/m field
CARTRIDGE THERMAL NOISE:
15 dB(A)
* Individually calibrated
1/2”
Microphone
Suitable Preamplifiers:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
13
Specifications and Ordering Information Type 4176
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
POLARIZATION VOLTAGE:
External: 0 V
TYPICAL USES:
As a sound level meter microphone (conforms
to IEC 651 Type 1 and ANSI S1.4–1983 Type 1)
POLARIZED CARTRIDGE CAPACITANCE*:
12.5 pF at 250 Hz
NOMINAL DIAMETER:
1/2”
16.7mm (0.65in) (with grid)
14.9 mm (0.58 in) (without grid)
Thread for preamplifier mounting: 11.7 mm –
60 UNS
MEAN TEMPERATURE COEFFICIENT:
–0.004 dB/°C (-10°C < t < +50°C)
Ordering Information
EQUIVALENT AIR VOLUME:
50mm3 (250 Hz)
Type 4176
FREQUENCY RESPONSE
CHARACTERISTICS:
Free-field,0° Incidence and Random-incidence
with corrector DZ 9566
EXPECTED LONG-TERM STABILITY:
>250 years/dB at 20°C
OPEN CIRCUIT FREQUENCY RESPONSE*:
6.5 Hz to 12.5 kHz: ±2 dB
INFLUENCE OF STATIC PRESSURE:
–0.02 dB/kPa, typical
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–26 ±2 dB re.1 V/Pa, 50 mV/Pa
INFLUENCE OF VIBRATION:
60 dB re. 20 μPa and 1 ms-2 axial vibration
LOWER LIMITING FREQUENCY (-3 dB):
0.5 Hz to 5Hz
INFLUENCE OF MAGNETIC FIELD:
30 dB re. 20 μPa in 50 Hz, 80 A/m field
CARTRIDGE THERMAL NOISE:
13.5 dB(A)
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
3% DISTORTION LIMIT (UPPER):
> 142 dB re.20 μPa at 100 Hz
DIMENSIONS:
Diameter: 13.2 mm (0.52 in) (with grid)
12.7 mm (0.50 in) (without grid)
DIAPHRAGM RESONANCE FREQUENCY:
12.5 kHz (90° phase-shift)
Height:
* Individually calibrated
1/2”
Microphone
Includes the following accessory:
DZ 9566
Random-incidence Corrector
Suitable Preamplifiers:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
Type 2669L 1/2” Microphone Preamplifier with
LEMO connector
1/2” Deltatron™ Preamplifier
Type 2671
Note: The polarization voltage feed to the
preamplifier must be grounded and not allowed
to float.
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
Specifications and Ordering Information Type 4178
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
DIAPHRAGM RESONANCE FREQUENCY:
95 kHz (90° phase-shift)
INFLUENCE OF MAGNETIC FIELD:
10 to 42 dB re. 20 μPa in 50 Hz, 80 A/m field
TYPICAL USES:
Measurement of sound intensity
POLARIZATION VOLTAGE:
External: 200 V
INFLUENCE OF HUMIDITY:
< 0.1 dB /100 %RH
NOMINAL DIAMETER:
1/4”
POLARIZED CARTRIDGE CAPACITANCE*:
6.4 pF at 250 Hz
THREAD FOR PREAMPLIFIER MOUNTING:
5.7 mm – 60 UNS
FREQUENCY RESPONSE
CHARACTERISTIC:
Free-field 0° incidence
PHASE RESPONSE DIFFERENCE WHEN
USED AS A PAIR:
< 0.2°: 20 Hz to 1kHz (absolute value)
Ordering Information
OPEN CIRCUIT FREQUENCY RESPONSE*:
0° incidence free-field response:
4 Hz to 100kHz: ±2 dB
AMPLITUDE RESPONSE DIFFERENCE
WHEN USED AS A PAIR:
< 0.2 dB: 20Hz to 2 kHz (normalized at 200 Hz)
OPEN CIRCUIT SENSITIVITY (1000 Hz)*:
–48 dB re.1 V/Pa, 4mV/Pa
MEAN TEMPERATURE COEFFICIENT:
–0.005 dB/°C (250 Hz, -10°C < t < +50°C)
LOWER LIMITING FREQUENCY (-3 dB):
0.3 Hz to 3 Hz (vent exposed to sound)
INFLUENCE OF STATIC PRESSURE:
–0.007 dB/kPa, typical
CARTRIDGE THERMAL NOISE:
29.5 dB(A)
INFLUENCE OF VIBRATION:
59 dB re. 20 μPa and 1 ms-2 axial vibration
Type 4178 microphones are normally included
as part of Sound Intensity Probe Set Type 3545,
which includes matched preamplifiers.
* Individually calibrated
For information on microphone calibration
equipment and microphone accessories, please
refer to the product data sheet for Type 3545
3% DISTORTION LIMIT (UPPER):
> 164 dB re.20 μPa at 100 Hz
14
Type 4178
1/2”
Sound Intensity Microphone
Pair
Includes the following accessories:
UC 0196
6 mm spacer
UC 0195
12 mm spacer
Suitable Preamplifiers:
Specifications and Ordering Information Type 4179
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
POLARIZATION VOLTAGE:
External: 200 V
TYPICAL USES:
Measurement of very low sound levels
POLARIZED CARTRIDGE CAPACITANCE*:
40 pF at 250 Hz
NOMINAL DIAMETER:
1”
MEAN TEMPERATURE COEFFICIENT:
–0.004 dB/°C (-10°C < t < +50°C)
FREQUENCY RESPONSE
CHARACTERISTICS:
Free-field,0° Incidence
EQUIVALENT AIR VOLUME:
400mm3 (250 Hz)
Ordering Information
EXPECTED LONG-TERM STABILITY:
>250 years/dB at 20°C
Type 4176
OPEN CIRCUIT FREQUENCY RESPONSE*:
10Hz to 10 kHz: ±2 dB
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–20 ±2 dB re.1 V/Pa, 100 mV/Pa
LOWER LIMITING FREQUENCY (-3 dB):
5 Hz to 7Hz
CARTRIDGE THERMAL NOISE:
–5.5 dB(A)
3% DISTORTION LIMIT (UPPER):
> 140 dB re.20 μPa at 100 Hz
DIAPHRAGM RESONANCE FREQUENCY:
7 kHz (90° phase-shift)
INFLUENCE OF STATIC PRESSURE:
–0.016 dB/kPa, typical
INFLUENCE OF VIBRATION:
46 dB re. 20 μPa and 1 ms-2 axial vibration when
connected to Type 2660 preamplifier
INFLUENCE OF MAGNETIC FIELD:
6 dB re. 20 μPa in 50 Hz, 80 A/m field when connected to Type 2660 preamplifier
DIMENSIONS:
Diameter: 23.7mm (0.93 in) (with grid)
23.7 mm (0.93 in) (without grid)
Height:
25mm (0.98in) (with grid)
23mm (0.90 in) (without grid)
Thread for preamplifier mounting: 23.11 mm
– 60 UNS
1/2”
Microphone
Includes the following accessory:
DZ 9025
Protective Dust Cap
Suitable Preamplifier:
1/2” Low-level Microphone
Type 2660
Preamplifier
For more information on the Type 2660
preamplifier, microphone calibration equipment
and microphone accessories, please refer to the
relevant product data sheets
INFLUENCE OF HUMIDITY:
< 0.1 dB in the absence of condensation
* Individually calibrated
Specifications and Ordering Information Type 4180
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
See also separate Product Data Sheet, order
number BP 0459, for more detailed information
TYPICAL USES:
Laboratory standard, coupler measurements.
The Type 4180 conforms to IEC draft standard
for 1/2” laboratory standard microphones type
LS2a P
NOMINAL DIAMETER:
1/2”
FREQUENCY RESPONSE
CHARACTERISTICS:
Pressure Response
3% DISTORTION LIMIT (UPPER):
> 160 dB re.20 μPa at 100 Hz
DIAPHRAGM RESONANCE FREQUENCY:
23 kHz (90° phase-shift)
POLARIZATION VOLTAGE:
External: 200 V
POLARIZED CARTRIDGE CAPACITANCE*:
17.5 pF at 250 Hz
MEAN TEMPERATURE COEFFICIENT:
–0.002 dB/°C (-10°C < t < +50°C)
EQUIVALENT AIR VOLUME:
9.3 mm3 (250 Hz)
OPEN CIRCUIT FREQUENCY RESPONSE*:
Up to 20 kHz: ±1.5 dB
EXPECTED LONG-TERM STABILITY:
> 400 years/dB at 20°C
OPEN CIRCUIT SENSITIVITY (250 Hz)*:
–38 ± 1.5 dB re.1 V/Pa, 12.5 mV/Pa
INFLUENCE OF STATIC PRESSURE:
–0.007 dB/kPa, typical
LOWER LIMITING FREQUENCY (-3 dB):
1 Hz to 3 Hz
INFLUENCE OF VIBRATION:
65 dB re. 20 μPa and 1 ms-2 axial vibration
CARTRIDGE THERMAL NOISE:
18 dB(A)
INFLUENCE OF MAGNETIC FIELD:
20 dB re. 20 μPa in 50 Hz, 80 A/m field
INFLUENCE OF HUMIDITY:
0.0008 dB / 100% RH (due to variation in air stiffness)
DIMENSIONS:
Diameter: 13.2 mm (0.52 in)
Height:
12.0mm (0.47 in)
Thread for preamplifier mounting: 11.7 mm –
60 UNS
Ordering Information
Type 4180
1/2”
Microphone
Suitable Preamplifiers:
1/2” Microphone Preamplifier
Type 2639
1/2” Microphone Preamplifier
Type 2645
1/2” Low-level Microphone
Type 2660
Preamplifier
Type 2669B 1/2” Microphone Preamplifier
1
Type 2669L /2” Microphone Preamplifier with
LEMO connector
For information on microphone calibration
equipment and microphone accessories, please
refer to the relevant product data sheets
* Individually calibrated
15
Specifications and Ordering Information Type 4181
The data below are valid at 23°C, 101.3 kPa and
50% RH unless otherwise specified
DIAPHRAGM RESONANCE FREQUENCY:
24 kHz (90° phase-shift)
INFLUENCE OF HUMIDITY:
< 0.1 dB /100 %RH
TYPICAL USES:
Measurement of sound intensity
POLARIZATION VOLTAGE:
External: 200 V
THREAD FOR PREAMPLIFIER MOUNTING:
5.7 mm – 60 UNS
NOMINAL DIAMETER:
1/2”
POLARIZED CARTRIDGE CAPACITANCE*:
19.5 pF at 250 Hz
Ordering Information
FREQUENCY RESPONSE
CHARACTERISTIC:
Free-field 0° incidence
PHASE RESPONSE DIFFERENCE WHEN
USED AS A PAIR:
< 0.05°: 20 Hz to 250 Hz (absolute value)
OPEN CIRCUIT FREQUENCY RESPONSE*:
0° incidence free-field response:
0.3 Hz to 16kHz: ±2 dB
AMPLITUDE RESPONSE DIFFERENCE
WHEN USED AS A PAIR:
< 0.2 dB: 20Hz to 1 kHz (normalized at 200 Hz)
OPEN CIRCUIT SENSITIVITY (1000 Hz)*:
–39 dB re.1 V/Pa, 11.2mV/Pa
MEAN TEMPERATURE COEFFICIENT:
–0.002 dB/°C (250 Hz, -10°C < t < +50°C)
LOWER LIMITING FREQUENCY (-3 dB):
0.14 Hz (vent exposed to sound)
INFLUENCE OF STATIC PRESSURE:
–0.007 dB/kPa, typical
CARTRIDGE THERMAL NOISE:
20 dB(A)
INFLUENCE OF VIBRATION:
68 dB re. 20 μPa and 1 ms-2 axial vibration
3% DISTORTION LIMIT (UPPER):
> 160 dB re.20 μPa at 100 Hz
INFLUENCE OF MAGNETIC FIELD:
6 to 34 dB re. 20 μPa in 50 Hz, 80 A/m field
Type 4181
1/2”
Pair
Sound Intensity Microphone
Includes the following accessories:
UC 5349
8.5 mm spacer
UC 5269
12 mm spacer
UC 5270
50 mm spacer
Suitable Preamplifiers:
Type 4181 microphones are normally included
as part of Sound Intensity Probe Sets Type 3545
and Type 3548, which include matched
preamplifiers.
For information on microphone calibration
equipment and microphone accessories, please
refer to the product data sheet for Type 3545
and Type 3548
* Individually calibrated
Brüel&Kjær reserves the right to change specifications and accessories without notice
With compliments
Helmut Singer Elektronik
www.helmut-singer.de [email protected]
fon +49 241 155 315
fax +49 241 152 066
Feldchen 16-24 D-52070 Aachen Germany
Brüel & Kjær
B
K
WORLD HEADQUARTERS:
DK-2850 Naerum · Denmark · Telephone: +45 45 80 05 00 · Fax: +45 45 80 14 05 · Internet: http://www.bk.dk · e-mail: [email protected]
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Local representatives and service organisations worldwide
BP 0100–17
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