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Product Data
The FalconTM Range 1/2 Microphones -- Types 4188 to 4193
USES: r For sound level meters r In noise measurement systems satisfying IEC and ANSI standards r Transport-noise measurements r Architectural acoustics r Electro-acoustics r Choice of pre- or external polarization r Wide dynamic ranges typically from 14.2 dB(A) to 146 dB and 20 dB(A) to 162 dB (3% distortion limit) r Very wide operating temperature range and low ambient-temperature coefficient r Individual calibration charts r Individual data disks for Types 4189 to 4193 for use with Microsoft® WindowsTM r Withstand IEC 68-2-32 1 m drop test (<0.1 dB sensitivity change) and industrial environments r FalconTM Range product with a three-year guarantee

FEATURES: r Choice of free or pressure-field frequency response

The FalconTM Range microphones are six new high-quality, 1/2 diameter precision condenser microphones. They cover requirements for free-, randomand pressure-field measurements. They are the latest in Brüel & Kjær's range of precision microphones for accurate and reliable electro-acoustic, IEC or ANSI sound measurements. Their corrosion resistance has been improved and their temperature range has been extended. They are the result of a new and robust design which ensures greater reliability and accuracy.

Introduction
The six 1/2 condenser microphones of Brüel & Kjær's FalconTM Range cover, between them, a very wide range of needs and applications. They are the culmination of 40 years of leadership in top quality condenser microphones for precision acoustic measurements. These FalconTM Range microphones will meet your demands whether they be in complying with ANSI or IEC standards or in acoustic research. Robust and Stable They are robust and suffer less than a ±0.1 dB change in sensitivity when
Microsoft is a registered trademark and Windows is a trademark of Microsoft Corporation

subjected to an IEC 68-2-32 1 m drop test onto a hard wooden block. They are made of carefully selected materials and alloys to ensure excellent stability and are virtually unaffected by industrial and similarly hostile environments. Furthermore, each FalconTM Range microphone comes with an extended guarantee period of three years. During manufacture, each microphone is artificially aged at a high temperature to ensure good longterm stability. No ecologically damaging materials are used in the manufacture and packaging of these microphones. The

Types 4189 to 4193 are packaged as shown above.

Selecting a Microphone for Your Needs
To make sure you select the right microphone to match your needs, you will probably have to consider one or more of the following: Standards (IEC or ANSI) Free- or pressure-field response Frequency range Polarization (0 V or 200 V)

Brüel & Kjær

B

K

Start

Yes

Standards

No

ANSI

ANSI or IEC 651

IEC

Pressurefield

Free-field or Pressure-field

Freefield

S 1.4 1983 Type 1 or S 1.12 Type M S 1.4

S 1.12

Type 0 and Type 1

Type 0 Type 1

Infrasound

No

Audio freq. or Extended freq.

Audio freq.

Type 1

Yes

Extended freq. External Polarization No Frequency Analysis No

Yes

Yes

4192 4193 4188 + DZ 9566

4191 4192 4193

4190 4191

4188 4189

4193

4192

4191

4190

4189

4188
940369e

Fig.1 Flow chart to help you choose the right microphone from the

FalconTM

Range for your needs

These factors, together with the flow chart shown in Fig. 1, will help you to make the right decision. Measurement Standards You can use these microphones in noise measurement systems satisfying either ANSI or IEC standards (or their local equivalents). The microphones use 50% to 70% of the tolerances allowed by these standards. Frequency Ranges All six microphones cover the audio frequency range. If, however, you want to measure at frequencies down to 0.05 Hz (for infrasound measurements), choose the Type 4193, or at frequencies up to 40 kHz (for harmonic distortion measurements on loudspeakers) choose the Type 4191. Polarization/Preamplifier Prepolarized microphones are required on certain portable sound level meters (which do not provide external polarization) and are a good choice in tough and humid environments. Externally polarized microphones are more stable even at high temperatures. All six can be used with the 1/2 Microphone Preamplifier Type 2669. The two prepolarized microphones can also be used with the Preamplifier Type 2671.

Free-field Response or Pressurefield Response The four free-field response microphones (Types 4188 to 4191) cover specific IEC requirements and should be used in sound fields where reflections are negligible. The two pressure-field response microphones (Types 4192 and 4193) should be used for measurements in acoustic couplers. They also cover specific ANSI requirements and can be used in diffuse sound fields. As Replacements for Earlier Brüel&Kjær Microphones Table 1 shows what earlier Brüel & Kjær microphones can be replaced (type approval permitting) by FalconTM Range microphones.
Earlier Microphones 4155 4165 4133/4149 4134 4147 4166 4176 FalconTM Range Mics. 4189 4190 4191 4192 4193 (4188/4190/4192) * (4188/4189) *

Prepolarized Free-field 1/2 Microphones Types 4188 and 4189
These are prepolarized, free-field microphones which differ mainly in frequency range and sensitivity. Both can be used for measurements in accordance with IEC 651 Type 1. The Type 4188 is also suited to ANSI S 1.4 ­ 1983 Type 1 measurements when fitted with the Random-incidence Corrector DZ 9566 supplied. If your measurements require only frequency weighting (A or C), the Type 4188 is the more economic choice, and is also more robust. The Type 4189 has a greater sensitivity and frequency range and is well suited to general sound measurements requiring frequency analysis. They offer some significant advantages when used with portable, lowpower instruments not designed to produce a polarization voltage. Another advantage is greater reliability of the associated preamplifier under humid and polluted conditions. These factors make these prepolarized condenser microphones particularly suitable for field measurements, both outdoors and in industrial environments.

Table 1 Replacement check for earlier Brüel & Kjær microphones. The * means these are not direct replacements

2

Prepolarization They are prepolarized by a fixed, negatively charged layer deposited on the backplate of the microphone. If, however, an external polarization voltage is mistakenly applied, no permanent damage will occur because this will cause the backplate to repel the microphone's diaphragm. The housing of these prepolarized microphones are marked by a pair of parallel grooves. Static Pressure Equalization Table 2 tells you how each microphone is vented for static pressure equalisation. In brief, tall microphones are rear vented and short microphones are side vented. Rear venting permits the use of the Dehumidifier UA 0308 for operation in especially humid environments.
Type 4188/4189/ 4190 4191/4192/ 4193 Housing Tall Short Venting Rear Side

Both can be used for noise measurements in accordance with the more stringent requirements of IEC 651 Type 0 (and off course Type 1). Free-field 1/2 Microphone Type 4190 Has greater sensitivity and low inherent noise. Its frequency range is from 3.15 Hz to 20 kHz and is very well suited for a wide range of precision audio-frequency sound measurements. Free-field 1/2 Microphone Type 4191 Has an extended frequency range which is from 3.15 Hz to 40 kHz. This makes it very well suited for electroacoustic measurements on loudspeakers and microphones as well as for general precision sound measurements.

you do not need to measure at low frequencies. Pressure-field 1/2 Microphone Type 4192 Has a frequency range from 3.15 Hz to 20 kHz. It can be used either for ANSI S 1.4 sound measurements requiring random-incidence response or for coupler measurements, e.g. in connection with telephone and hearing aid testing. Furthermore, it also satisfies the requirements of ANSI S 1.12 Type M. Pressure-field 1/2 Microphone Type 4193 and Low-frequency Adaptor UC0211 Has an extended low-frequency range which cuts off between 10 mHz and 50 mHz. The high end of its frequency range extends up to 20 kHz. In addition to random-field or coupler measurements, it can also be used for measuring infrasound, for example, in ships' engine rooms, in helicopters and in wind-buffeted buildings. This microphone is supplied with a special Low-frequency Adaptor UC 0211 which has the effect of reducing the lower cut-off frequency of the preamplifier. In the case of the 1/ Microphone Preamplifier Type 2 2669, down to 0.1 Hz. It also has the effect of reducing the microphone's sensitivity by 16 dB (from 12.5 to 2 mV/Pa, or from ­38 to ­54 dB re 1V/ Pa), increasing the thermal noise from 19.0 dB (A) to 29.0 dB (A) and reducing the 3% distortion limit from 162 dB to 148 dB.
Main Standards IEC 651 Type 1, ANSI S1.4 1983 IEC 651 Type 1 IEC 651 Type 0/1 IEC 651 Type 0/1, ANSI S1.12 Type M ANSI S1.4 Type 1, ANSI S1.12 Type M ANSI S1.4 Type 1, ANSI S1.12 Type M Max. Operating Temp. 125 °C (257 °F) (70 °C (158 °F) with corrector) 150 °C (302 °F) 150 °C (302 °F) (can be used up to 300 °C (572 °F) but with a permanent sensitivity change of typically +0.4 dB which stabilises after one hour)

Pressure-field 1/2 Microphones Types 4192 and 4193
These are externally polarized, pressure-field microphones which differ only in frequency range. The polarization voltage required is 200 V and is provided by the instrument or analyzer powering the associated preamplifier. Both can be used for noise measurements in accordance with the requirements of ANSI S 1.4 1983 Type 1 and ANSI S 1.12 Type M. Note: the sensitivity of the Type 4193 to low frequencies can be a disadvantage if
Frequency Range 8 Hz to 12.5 kHz 6.3 Hz to 20 kHz 3.15 Hz to 20 kHz 3.15 Hz to 40 kHz 3.15 Hz to 20 kHz 70 mHz to 20 kHz 3 % Distortion Limit 146 dB 146 dB 148 dB 162 dB 162 dB 162 dB

Table 2 Static pressure equalisation

Free-field 1/2 Microphones Types 4190 and 4191
These are externally polarized, freefield microphones which differ mainly in frequency range and sensitivity. The polarization voltage required is 200 V and is provided by the instrument or analyzer powering the associated preamplifier.
Microphone Type 4188 Type 4189 Type 4190 Type 4191 Type 4192 Type 4193 Microphone Type 4188 Type 4189 Type 4190 Type 4191 Type 4192 Type 4193 (no UC 0211) Response Free- and diffuse-fields Free-field Free-field Free-field Pressure-field Infrasound, Press.-field Thermal Noise 14.2 dB (A), 14.5 dB (Lin) 14.6 dB (A), 15.3 dB (Lin) 14.6 dB (A), 15.3 dB (Lin) 20.0 dB (A), 21.4 dB (Lin) 19.0 dB (A), 21.3 dB (Lin) 19.0 dB (A), 21.3 dB (Lin)

Sensitivity 31.6 mV/Pa 50 mV/Pa 50 mV/Pa 12.5 mV/Pa 12.5 mV/Pa 12.5 mV/Pa LLF (­3 dB) 1 Hz to 5 Hz 2 Hz to 4 Hz 1 Hz to 2 Hz 1 Hz to 2 Hz 1 Hz to 2 Hz 10 mHz to 50 mHz

Polarization 0 V (prepolarized) 0 V (prepolarized) 200 V 200 V 200 V 200 V Temperature Coeff. +0.005 dB/ °C ­0.001 dB/×°C ­0.007 dB/×°C ­0.002 dB/×°C ­0.002 dB/×°C ­0.002 dB/×°C

Table 3 An overall view of the most important open-circuit characteristics of each microphone (LLF means lower-limiting frequency)

3

Prepolarized Condenser Microphone Cartridge Type 4188 Serial No.: 1740259
Open-circuit Pressure Sensitivity at 1013 hPa 23°C and 50% RH:

B
7/6-'89

K

Caution: Static electricity discharge directly on the centre terminal may damage the prepolarization of the cartridge. Therefore, ensure that the housing of the cartridge makes contact before the centre terminal. Sensitivity: The loaded sensitivity is typically 0.05 dB lower than the sensitivity stated. The random-field sensitivity is the same as the pressure sensitivity. The free-field sensitivity at 1000 Hz is 0.15 dB higher than the pressure sensitivity. Free-field calibration with Sound Level Calibrators at 1000 Hz: Adjust the Sound Level Meter, or other measurement equipment, to indicate 0.15 dB lower SPL than the actual SPL produced by the calibrator. The two grooves means "prepolarized", i.e. 0V external polarization voltage. Refer to the 4188 Product Data for further information. See also rear side.
BC0211-11

Brüel & Kjær

­30.2
Frequency: 1000 Hz

dB re 1 V/Pa or Capacitance: 12pF (typical)

30.9

mV/Pa

Polarization Voltage (external): 0 V Date:

1. July 1993

N.G. Signature: .......................................

3 2 1 0 -1 -2 -3 1 2 5 10 Tol. Frequency response satisfies IEC 651 Type 1 20 50 100 200 500 1k 2k 5k 10k 20k Tol. Tol. Typical free-field response for 0° incidence without random incidence corrector Tol.

3 2 1 0 -1 -2 -3 1 2 5

Typical random-field response with random incidence corrector

Frequency response satisfies ANSI S 1.4­1984 Type 1 10 20 50 100 200 500 1k 2k 5k 10k 20k

930776e

Fig.2 An example of a Calibration Chart (front and rear sides) supplied with a Prepolarized Condenser Microphone Type 4188
B
7/6-'89

K

Free-field 1/2" Microphone Type 4191
Calibration Chart

+5 dB +1 0 ­1 Dotted Curve Shows Typical Response Free-field Response 0° Sound Incidence

Bruel & Kjær
Serial No:

419111A

Open-circuit Sensitivity*, S0: Equivalent to: Uncertainty, 95 % confidence level Capacitance: Valid At: Temperature: Ambient Static Pressure: Relative Humidity: Frequency: Polarization Voltage, external:

-37.9 12.7
0.2

dB re 1V/Pa mV/Pa dB pF °C kPa % Hz V

18.2
23 101.3 50 250 200

­5

Actuator Response ­ 10

Sensitivity Traceable To: DPLA: Danish Primary Laboratory of Acoustics NIST: National Institute of Standards and Technology, USA IEC 1094-4: Type WS 2 F Environmental Calibration Conditions: 100.1 kPa 25 °C 35 % RH Procedure: 704217
BC 0226 ­ 12

­ 15

0° Sound Incidence

Date: 21. Apr. 1994

Signature:

­ 20

*K0 = ­ 26 ­ S0 Example: K0 = ­ 26 ­ (­ 38) = + 12 dB

1 2 5 10 20 See the microphone handbook for further information

50

100

200

500

1k

2k

5k

20 k 10 k Frequency Hz

40 k

940952e

Fig.3 An example of a Calibration Chart supplied with a Free-field

1/2"

Microphone Type 4191

Microphone Specifications
The design and construction of each microphone results in a reliable transducer of high sensitivity and low temperature dependence. All data given for each microphone in this data sheet are for open-circuit conditions, which means that the microphone looks into an infinitely high impedance. Table 3 summarises the most important specifications for the FalconTM Range microphones. In practice, however, a microphone is used with a preamplifier which slightly influences the given responses. When you use a Brüel & Kjær preamplifier (for example the Type 2669), the input impedance is very high (high resistance, low capacitance), and the loading on the microphone cartridge is generally insignificant. More information on these microphones and other FalconTM Range products is given in the optionally available Microphone Handbook BA 5105. Individual Calibration Chart The calibration chart delivered with each microphone contains all the in4

dividual parameters required for correct use of the microphone. Typical frequency response curves are given for the Type 4188 as shown in Fig. 2. Individual frequency response curves are given for the other microphones. See the example shown in Fig. 3 for a Type 4191. For free-field microphones, the 0° incidence free-field response is obtained by adding the 0° incidence free-field correction to the electrostatic actuator response. If required, you can use an electrostatic actuator to recalibrate the frequency response of all these microphones. For general routine calibration you can check the sensitivity at 1 kHz with the Sound Level Calibrator Type 4231, or at 250 Hz with the Pistonphone Type 4228. For a thorough calibration the Multifunction Acoustic Calibrator Type 4226 allows you to measure both sensitivity and frequency response. Separate data sheets are available for all three of these products. Charge-injection Calibration This is a patented feature of 1/ Microphone Brüel & Kjær's 2

Preamplifier Type 2669. It allows you to verify the condition of the microphone as well as the preamplifier and cable. This means remote calibration as well as fault detection in the entire measurement set up including the microphone.

Microphone-data Disk
Apart from Type 4188, each microphone is supplied with a 3 1/2 microphone-data disk. This disk carries all individual calibration data as well as free-field, random-incidence and pressure-field corrections in commaseparated ASCII text files. The disk can be fully exploited if you have a suitable drive on a PC loaded with Microsoft® WindowsTM. Frequency responses (or corrections) are displayed in both graphical and tabular form. The tabular data can be printed out and stored in new files for further use. They can also be accessed by a suitable spreadsheet for further processing. Help in the form of hypertext is included throughout to guide you.

Specifications 4188
OPEN-CIRCUIT SENSITIVITY (1000 Hz): ­30 dB ±2 dB re 1 V/Pa, 31.6 mV/Pa* POLARIZATION VOLTAGE (external): 0 V FREQUENCY RESPONSE: 0° incidence free-field response: ±1 dB, 12.5 Hz to 8 kHz ±2 dB, 8 Hz to 12.5 kHz In accordance with IEC 651, Type 1 and ANSI S1.4 ­ 1983 LOWER LIMITING FREQUENCY (­3 dB): 1 Hz to 5 Hz (vent exposed to sound) PRESSURE EQUALIZATION VENT: Rear vented DIAPHRAGM RESONANCE FREQUENCY: 9 kHz (90° phase shift) CAPACITANCE (POLARIZED, 1000 Hz): 12 pF EQUIVALENT AIR VOLUME (101.3 kPa): 65 mm3 CALIBRATOR LOAD VOLUME (250 Hz): 208 mm3 PISTONPHONE TYPE 4228 CORRECTION (with DP 0776): +0.02 dB CARTRIDGE THERMAL NOISE: 14.2 dB (A), 14.5 dB (Lin.) * Individually calibrated UPPER LIMIT OF DYNAMIC RANGE (3% distortion): >146 dB SPL MAXIMUM SOUND PRESSURE LEVEL: 157 dB (peak) MAGNETIC FIELD SENSITIVITY: 7 dB SPL for 80 A/m, 50 Hz field ESTIMATED LONG-TERM STABILITY: >1000 years/dB (dry air at 20 °C (68 °F)) >10 hours/dB (dry air at 125 °C (257 °F)) >40 years/dB (air at 20 °C (68 °F), 90% RH) >6 months/dB (air at 50 °C (122 °F), 90% RH)

Environmental
OPERATING TEMPERATURE RANGE: ­30 to +125°C (­22 to +257 °F) Max. 70 °C (158 °F) when fitted with Randomincidence Corrector DZ 9566 OPERATING HUMIDITY RANGE: 0 to 100 % RH (without condensation) STORAGE TEMPERATURE: ­30 to +70 °C (­22 to +158 °F) Data Disk: 5 to 50 °C (41 to +122 °F) TEMPERATURE COEFFICIENT (250 Hz): +0.005 dB/°C (for the range ­10 to +50 °C (14 to +122 °F)) PRESSURE COEFFICIENT (250 Hz): ­0.021 dB/kPa INFLUENCE OF HUMIDITY: <0.1 dB/100 %RH VIBRATION SENSITIVITY (<1000 Hz): 63.5 dB equivalent SPL for 1 m/s2 axial acceleration

Dimensions
Diameter: 13.2 mm (0.52) (with grid) 12.7 mm (0.50) (cartridge housing) 14.35 mm (0.56) (with DZ 9566) 14.9 mm (0.59) (with grid) Height: 14.0 mm (0.55) (without grid) 16.7 mm (0.66) (with DZ 9566) Thread for preamplifier mounting: 11.7 mm ­ 60 UNS

Note: All values are typical at 23 °C (73.4 °F) 101.3 kPa and 50% RH, unless measurement uncertainty or tolerance field is specified. All uncertainty values are specified at 2 (i.e. expanded uncertainty using a coverage factor of 2)

Ordering Information 4188
Type 4188 Prepolarized Free-field 1/2 Microphone Includes the following accessories: DZ 9566: Random-incidence Corrector BC 0211: Calibration Chart*

Optional Accessories
Type 2669: Type 4231: Type 4226: Type 4228: UA 0308:
1/ 2

UA 0254: UA 0469: BA 5105:

* Quote mic. serial number when re-ordering

Microphone Preamplifier Sound Level Calibrator Multifunction Acoustic Calibrator Pistonphone Dehumidifier

Set of 6 Windscreens (UA 0237), 90 mm (3.5) Set of 6 Windscreens (UA 0459), 65 mm (2.6) Microphone Handbook

Specifications 4189
OPEN-CIRCUIT SENSITIVITY (250 Hz): ­26 dB ±1.5 dB re 1 V/Pa, 50 mV/Pa* POLARIZATION VOLTAGE (external): 0 V FREQUENCY RESPONSE*: 0° incidence free-field response: ±1 dB, 10 Hz to 8 kHz ±2 dB, 6.3 Hz to 20 kHz In accordance with IEC 651, Type 1 LOWER LIMITING FREQUENCY (­3 dB): 2 Hz to 4 Hz (vent exposed to sound) PRESSURE EQUALIZATION VENT: Rear vented DIAPHRAGM RESONANCE FREQUENCY: 14 kHz (90° phase shift) CAPACITANCE (POLARIZED, 250 Hz): 14 pF EQUIVALENT AIR VOLUME (101.3 kPa): 46 mm3 CALIBRATOR LOAD VOLUME (250 Hz): 260 mm3 PISTONPHONE TYPE 4228 CORRECTION (with DP 0776): 0.00 dB CARTRIDGE THERMAL NOISE: 14.6 dB (A), 15.3 dB (Lin.) * Individually calibrated UPPER LIMIT OF DYNAMIC RANGE (3% distortion): >146 dB SPL MAXIMUM SOUND PRESSURE LEVEL: 158 dB (peak) MAGNETIC FIELD SENSITIVITY: 6 dB SPL for 80 A/m, 50 Hz field ESTIMATED LONG-TERM STABILITY: >1000 years/dB (dry air at 20 °C (68 °F)) >2 hours/dB (dry air at 150 °C (302 °F)) >40 years/dB (air at 20 °C (68 °F), 90% RH) >1 year/dB (air at 50 °C (122 °F), 90% RH)

Environmental
OPERATING TEMPERATURE RANGE: ­30 to +150 °C (­22 to 302 °F) OPERATING HUMIDITY RANGE: 0 to 100 % RH (without condensation) STORAGE TEMPERATURE: ­30 to +70 °C (­22 to 158 °F) Data Disk: 5 to 50 °C (41 to +122 °F) TEMPERATURE COEFFICIENT (250 Hz): ­0.001 dB/°C (for the range ­10 to +50 °C (14 to 122 °F)) PRESSURE COEFFICIENT (250 Hz): ­0.010 dB/kPa INFLUENCE OF HUMIDITY: <0.1 dB/100 %RH VIBRATION SENSITIVITY (<1000 Hz): 62.5 dB equivalent SPL for 1 m/s2 axial acceleration

Dimensions
Diameter: 13.2 mm (0.52) (with grid) 12.7 mm (0.50) (without grid) 17.6 mm (0.69) (with grid) Height: 16.3 mm (0.64) (without grid) Thread for preamplifier mounting: 11.7 mm ­ 60 UNS

Note: All values are typical at 23 °C (73.4 °F) 101.3 kPa and 50% RH, unless measurement uncertainty or tolerance field is specified. All uncertainty values are specified at 2 (i.e. expanded uncertainty using a coverage factor of 2)

Ordering Information 4189
Type 4189 Prepolarized Free-field 1/2 Microphone Includes the following accessories: BC 0224: Calibration Chart* BC 5002: Microphone-data Disk*

Optional Accessories
Type 2669: Type 4231: Type 4226:
1/ 2

Type 4228: UA 0308: UA 0254: UA 0469: BA 5105:

* Quote mic. serial number when re-ordering

Microphone Preamplifier Sound Level Calibrator Multifunction Acoustic Calibrator

Pistonphone Dehumidifier Set of 6 Windscreens (UA 0237), 90 mm (3.5) Set of 6 Windscreens (UA 0459), 65 mm (2.6) Microphone Handbook

5

Specifications 4190
OPEN-CIRCUIT SENSITIVITY (250 Hz): ­26 dB ±1.5 dB re 1 V/Pa, 50 mV/Pa* POLARIZATION VOLTAGE (external): 200 V FREQUENCY RESPONSE*: 0° incidence free-field response: ±1 dB, 5 Hz to 10 kHz ±2 dB, 3.15 Hz to 20 kHz In accordance with IEC 651, Type 0 and Type 1 LOWER LIMITING FREQUENCY (­3 dB): 1 Hz to 2 Hz (vent exposed to sound) PRESSURE EQUALIZATION VENT: Rear vented DIAPHRAGM RESONANCE FREQUENCY: 14 kHz (90° phase shift) CAPACITANCE (POLARIZED, 250 Hz)*: 16 pF EQUIVALENT AIR VOLUME (101.3 kPa): 46 mm3 CALIBRATOR LOAD VOLUME (250 Hz): 250 mm3 PISTONPHONE TYPE 4228 CORRECTION (with DP 0776): 0.00 dB * Individually calibrated CARTRIDGE THERMAL NOISE: 14.6 dB (A), 15.3 dB (Lin.) UPPER LIMIT OF DYNAMIC RANGE (3% distortion): >148 dB SPL MAXIMUM SOUND PRESSURE LEVEL: 159 dB (peak) VIBRATION SENSITIVITY (<1000 Hz): 62.5 dB equivalent SPL for 1 m/s2 axial acceleration MAGNETIC FIELD SENSITIVITY: 4 dB SPL for 80 A/m, 50 Hz field ESTIMATED LONG-TERM STABILITY: >1000 years/dB at 20 °C (68 °F) >100 hours/dB at 150 °C (302 °F)

Environmental
OPERATING TEMPERATURE RANGE: ­30 to +150 °C (­22 to +302 °F) OPERATING HUMIDITY RANGE: 0 to 100 % RH (without condensation) STORAGE TEMPERATURE: ­30 to +70 °C (­22 to 158 °F) Data Disk: 5 to 50 °C (41 to +122 °F) TEMPERATURE COEFFICIENT (250 Hz): ­0.007 dB/°C (for the range ­10 to +50 °C (14 to 122 °F)) PRESSURE COEFFICIENT (250 Hz): ­0.010 dB/kPa INFLUENCE OF HUMIDITY: <0.1 dB/ 100 %RH

Dimensions
Diameter: 13.2 mm (0.52) (with grid) 12.7 mm (0.50) (without grid) 17.6 mm (0.69) (with grid) Height: 16.3 mm (0.64) (without grid) Thread for preamplifier mounting: 11.7 mm ­ 60 UNS Note: All values are typical at 23 °C (73.4 °F) 101.3 kPa and 50% RH, unless measurement uncertainty or tolerance field is specified. All uncertainty values are specified at 2 (i.e. expanded uncertainty using a coverage factor of 2)

Ordering Information 4190
Type 4190 Includes the BC 0225: BC 5002: Free-field 1/2 Microphone following accessories: Calibration Chart* Microphone-data Disk*

Optional Accessories
Type Type Type Type 2669: 4231: 4226: 4228:
1/ 2

UA 0308: UA 0254: UA 0469: BA 5105:

* Quote mic. serial number when re-ordering

Microphone Preamplifier Sound Level Calibrator Multifunction Acoustic Calibrator Pistonphone

Dehumidifier Set of 6 Windscreens (UA 0237), 90 mm (3.5) Set of 6 Windscreens (UA 0459), 65 mm (2.6) Microphone Handbook

Specifications 4191
OPEN-CIRCUIT SENSITIVITY (250 Hz): ­38 dB ±1.5 dB re 1 V/Pa, 12.5 mV/Pa* POLARIZATION VOLTAGE (external): 200 V FREQUENCY RESPONSE*: 0° incidence free-field response: 5 Hz to 16 kHz ±1 dB 3.15 Hz to 40 kHz ±2 dB In accordance with IEC 651, Type 0, Type 1 and ANSI S1.12, Type M LOWER LIMITING FREQUENCY (­3 dB): 1 Hz to 2 Hz (vent exposed to sound) PRESSURE EQUALIZATION VENT: Side vented DIAPHRAGM RESONANCE FREQUENCY: 34 kHz (90° phase shift) CAPACITANCE (POLARIZED, 250 Hz)*: 18 pF EQUIVALENT AIR VOLUME (101.3 kPa): 11.6 mm3 CALIBRATOR LOAD VOLUME (250 Hz): 190 mm3 PISTONPHONE TYPE 4228 CORRECTION (with DP 0776): +0.02 dB * Individually calibrated CARTRIDGE THERMAL NOISE: 20.0 dB (A), 21.4 dB (Lin.) UPPER LIMIT OF DYNAMIC RANGE (3% distortion): >162 dB SPL MAXIMUM SOUND PRESSURE LEVEL: 171 dB (peak) INFLUENCE OF HUMIDITY: <0.1 dB/100 %RH VIBRATION SENSITIVITY (<1000 Hz): 65.5 dB equivalent SPL for 1 m/s2 axial acceleration MAGNETIC FIELD SENSITIVITY: 16 dB SPL for 80 A/m, 50 Hz field ESTIMATED LONG-TERM STABILITY: >1000 years/dB at 20 °C (68 °F) >100 hours/dB at 150 °C (302 °F)

Environmental
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 +0.4 dB which stabilises after one hour) OPERATING HUMIDITY RANGE: 0 to 100 % RH (without condensation) STORAGE TEMPERATURE: ­30 to +70 °C (­22 to 158 °F) Data Disk: 5 to 50 °C (41 to +122 °F) TEMPERATURE COEFFICIENT (250 Hz): ­0.002 dB/°C (for the range ­10 to +50 °C (14 to 122 °F)) PRESSURE COEFFICIENT (250 Hz): ­0.007 dB/kPa

Dimensions
Diameter: 13.2 mm (0.52) (with grid) 12.7 mm (0.50) (without grid) 13.5 mm (0.53) (with grid) Height: 12.6 mm (0.50) (without grid) Thread for preamplifier mounting: 11.7 mm ­ 60 UNS Note: All values are typical at 23 °C (73.4 °F) 101.3 kPa and 50% RH, unless measurement uncertainty or tolerance field is specified. All uncertainty values are specified at 2 (i.e. expanded uncertainty using a coverage factor of 2)

Ordering Information 4191
Type 4191 Includes the BC 0226: BC 5002: Free-field 1/2 Microphone following accessories: Calibration Chart* Microphone-data Disk*

Optional Accessories
Type Type Type Type 2669: 4231: 4226: 4228:
1/ 2

UA 0254: UA 0469: BA 5105:

* Quote mic. serial number when re-ordering

Microphone Preamplifier Sound Level Calibrator Multifunction Acoustic Calibrator Pistonphone

Set of 6 Windscreens (UA 237), 90 mm (3.5) Set of 6 Windscreens (UA 0459), 65 mm (2.6) Microphone Handbook

6

Specifications 4192
OPEN-CIRCUIT SENSITIVITY (250 Hz): ­38 dB ±1.5 dB re 1 V/Pa, 12.5 mV/Pa* POLARIZATION VOLTAGE (external): 200 V FREQUENCY RESPONSE*: Pressure-field response: 5 Hz to 7 kHz: ±1 dB 3.15 Hz to 20 kHz: ±2 dB In accordance with ANSI S1.4 -1983, Type 1 and ANSI S1.12, Type M LOWER LIMITING FREQUENCY (­3 dB): 1 Hz to 2 Hz (vent exposed to sound) PRESSURE EQUALIZATION VENT: Side vented DIAPHRAGM RESONANCE FREQUENCY: 23 kHz (90° phase shift) CAPACITANCE (POLARIZED, 250 Hz)*: 18 pF EQUIVALENT AIR VOLUME (101.3 kPa): 8.8 mm3 CALIBRATOR LOAD VOLUME (250 Hz): 190 mm3 PISTONPHONE TYPE 4228 CORRECTION (with DP 0776): +0.02 dB * Individually calibrated CARTRIDGE THERMAL NOISE: 19.0 dB (A), 21.3 dB (Lin.) UPPER LIMIT OF DYNAMIC RANGE (3% distortion): >162 dB SPL MAXIMUM SOUND PRESSURE LEVEL: 171 dB (peak) INFLUENCE OF HUMIDITY: <0.1 dB/100%RH VIBRATION SENSITIVITY (<1000 Hz): 65.5 dB equivalent SPL for 1 m/s2 axial acceleration MAGNETIC FIELD SENSITIVITY: 16 dB SPL for 80 A/m, 50 Hz field ESTIMATED LONG-TERM STABILITY: >1000 years/dB at 20 °C (68 °F) >100 hours/dB at 150 °C (302 °F)

Environmental
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 +0.4 dB which stabilises after one hour) OPERATING HUMIDITY RANGE: 0 to 100 % RH (without condensation) STORAGE TEMPERATURE: ­30 to +70 °C (­22 to 158 °F) Data Disk: 5 to 50 °C (41 to +122 °F) TEMPERATURE COEFFICIENT (250 Hz): ­0.002 dB/°C (for the range ­10 to +50 °C (14 to 122 °F)) PRESSURE COEFFICIENT (250 Hz): ­0.005 dB/kPa

Dimensions
Diameter: 13.2 mm (0.52) (with grid) 12.7 mm (0.50) (without grid) 13.5 mm (0.53) (with grid) Height: 12.6 mm (0.50) (without grid) Thread for preamplifier mounting: 11.7 mm ­ 60 UNS Note: All values are typical at 23 °C (73.4 °F) 101.3 kPa and 50% RH, unless measurement uncertainty or tolerance field is specified. All uncertainty values are specified at 2 (i.e. expanded uncertainty using a coverage factor of 2)

Ordering Information 4192
Type 4192 Includes the BC 0227: BC 5002: Pressure-field 1/2 Microphone following accessories: Calibration Chart* Microphone-data Disk*

Optional Accessories
Type Type Type Type 2669: 4231: 4226: 4228:
1/ 2

UA 0254: UA 0469: BA 5105:

* Quote mic. serial number when re-ordering

Microphone Preamplifier Sound Level Calibrator Multifunction Acoustic Calibrator Pistonphone

Set of 6 Windscreens (UA 0237), 90 mm (3.5) Set of 6 Windscreens (UA 0459), 65 mm (2.6) Microphone Handbook

Specifications 4193
OPEN-CIRCUIT SENSITIVITY (250 Hz): ­38 dB ±1.5 dB re 1 V/Pa, 12.5 mV/Pa* ­54 dB ±1.5 dB re 1 V/Pa, 1.8 mV/Pa with UC 0211 POLARIZATION VOLTAGE (external): 200 V FREQUENCY RESPONSE*: Pressure-field response: 0.12 Hz to 7 kHz ±1 dB 0.07 Hz to 20 kHz ±2 dB 0.13 Hz to 20 kHz ±2 dB with UC 0211 In accordance with ANSI S1.4 ­ 1983, Type 1 and ANSI S1.12, Type M LOWER LIMITING FREQUENCY (­3 dB): 0.01 Hz to 0.05 Hz (vent exposed to sound) PRESSURE EQUALIZATION VENT: Side vented DIAPHRAGM RESONANCE FREQUENCY: 23 kHz (90° phase shift) CAPACITANCE (POLARIZED, 250 Hz)*: 18 pF EQUIVALENT AIR VOLUME (101.3 kPa): 8.8 mm3 CALIBRATOR LOAD VOLUME (250 Hz): 190 mm3 PISTONPHONE TYPE 4228 CORRECTION (with DP 0776): +0.02 dB * Individually calibrated CARTRIDGE THERMAL NOISE: 19.0 dB (A), 21.3 dB (Lin.) UPPER LIMIT OF DYNAMIC RANGE (3% distortion): >162 dB SPL MAXIMUM SOUND PRESSURE LEVEL: 171 dB (peak) <0.001 dB/100%RH VIBRATION SENSITIVITY (<1000 Hz): 65.5 dB equivalent SPL for 1 m/s2 axial acceleration MAGNETIC FIELD SENSITIVITY: 16 dB SPL for 80 A/m, 50 Hz field ESTIMATED LONG-TERM STABILITY: >100 hours/dB at 150 °C (302 °F)

Environmental
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 +0.4 dB which stabilises after one hour) OPERATING HUMIDITY RANGE: 0 to 100 % RH (without condensation) STORAGE TEMPERATURE: ­30 to +70 °C (­22 to +158 °F) Data Disk: 5 to 50 °C (41 to +122 °F) TEMPERATURE COEFFICIENT (250 Hz): ­0.002 dB/°C (for the range ­10 to +50 °C (14 to 122 °F)) PRESSURE COEFFICIENT (250 Hz): ­0.005 dB/kPa INFLUENCE OF HUMIDITY: >1000 years/dB at 20 °C (68 °F)

Dimensions
Diam.: 13.2 mm (0.52) (with grid) 12.7 mm (0.50) (without grid) Height: 13.5 mm (0.53) (with grid) 12.6 mm (0.50) (without grid) 27.6 mm (1.09) (with UC 0211 and grid) 26.7 mm (1.05) (with UC 0211, no grid) Thread for preamplifier mounting: 11.7 mm ­ 60 UNS Note: All values are typical at 23 °C (73.4 °F) 101.3 kPa and 50% RH, unless measurement uncertainty or tolerance field is specified. All uncertainty values are specified at 2 (i.e. expanded uncertainty using a coverage factor of 2)

Ordering Information 4193
Type 4193 Includes the BC 0228: BC 5002: Pressure-field 1/2 Microphone following accessories: Calibration Chart* Microphone-data Disk* UC 0211: Low-frequency Adaptor Type 4228: UA 0254: UA 0469: BA 5105:

Optional Accessories
Type 2669: Type 4231: Type 4226:
1/ 2

* Quote mic. serial number when re-ordering

Microphone Preamplifier Sound Level Calibrator Multifunction Acoustic Calibrator

Pistonphone Set of 6 Windscreens (UA 0237), 90 mm (3.5) Set of 6 Windscreens (UA 0459), 65 mm (2.6) Microphone Handbook

7

Specifications UC 0211 (supplied with Type 4193)
LOWER CUT-OFF FREQUENCY: 0.1 Hz (with 1/2 Microphone Preamplifier Type 2669) EFFECT ON HIGH FREQUENCY RESPONSE: ±0.1 dB, 100 Hz to 10 kHz ±0.5 dB, 100 Hz to 20 kHz ATTENUATION: 16 dB CAPACITANCE (at 1000 Hz): 100 pF Thread for Preamplifier and Microphone Mounting: 11.7 mm ­ 60 UNS

Dimensions:
Diameter: 12.7 mm (0.50) Height: 14.1 mm (0.56)

Brüel&Kjær reserves the right to change specifications and accessories without notice

Brüel & Kjær

B

K

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