Vibration Division | 426B03 | Measurement Microphones Measurement Microphones

PRECISION MICROPHONES AND ACCESSORIES
Measurement
Microphones
For Precision Sound Level and Array Measurements
Sound Power Testing
Engine Noise Analysis
Environmental Noise Analysis
Near-field Acoustic Holography
Building Noise Studies
Acoustic Chamber Testing
Sound Pressure Mapping
The Vibration Division of PCB® Piezotronics, Inc. offers a
variety of traditional, externally polarized condenser
microphones and modern, prepolarized condenser
microphones. These devices are well-suited for precision
sound level and acoustic array measurements.
PCB precision microphones are available from
1/8 to 1-inch diameters to cover a variety of applications,
and are designed to operate over a wide range of
temperatures and humidity levels. Microphone
preamplifiers are small, rugged units with a very low
inherent noise floor, a large dynamic range, and a
bandwidth extending over a broad frequency range.
As with all PCB® instrumentation, this equipment is
complemented with toll-free applications assistance, 24hour customer service, and is backed by a no-risk policy
that guarantees satisfaction or your money refunded.
Total Customer Satisfaction Guaranteed
PRECISION MICROPHONES
Array Microphones
Precision Modern Prepolarized
and Traditional Externally Polarized
Condenser Microphones
• Proven ruggedized design
• Exceptional performance in high humidity
• Individually tested for performance
• Operate from ICP® sensor power (prepolarized microphones)
• Meet IEC and ANSI standards
• Can be utilized in Type 1 systems
A wide variety of traditional externally polarized and modern
prepolarized free-field, pressure, and random incidence precision
condenser microphones are available from PCB. Externally polarized
models operate from a 200 V power source, while prepolarized models
can operate from low-cost, constant current (2 to 20 mA) ICP® sensor
• Low per-channel cost
• Powered from ICP®
sensor signal conditioners
• Interchangeable with
with ICP® accelerometers
• Integrated preamplifier
Model 130D21
(10–32 Connector)
Model 130D20
(BNC Connector)
The Series 130 Array Microphones provide a cost-effective method for
large-channel count sound pressure measurements. They are powered
by standard ICP® sensor signal conditioners. Typical applications include
sound pressure mapping, acoustic mode analysis, near field acoustic
holography, and vibro-acoustic testing.
Models 130D20 and 130D21 are available with the Transducer Electronic
Data Sheet (TEDS) option, compliant with IEEE P1451.4.
signal conditioners and coaxial cables. Prepolarized microphones can
Array kits are available, complete with patch panel, cables, and signal
conditioners, for multi-channel applications. PCB also offers versatile,
precision-made array microphone test stands and flexible pattern arrays.
also be interchanged with similar accelerometer set-ups.
1/8 inch
Model 377A50
1/4 inch
Model 377A01
2 x 4 Array
Arrangement
3 x 3 Array
Arrangement
Model 379A01
Array Stand
Array Microphones with Integral Preamplifier
Model Number
1/2 inch
Model 377A02
1 inch
Model 377A42
The Series 377 incorporates microphones of the highest quality,
accurate enough to be used for laboratory testing, and rugged
enough for field use in Type 1 system measurements.
Microphone Diameter
Response
Sensitivity (± 3 dB at 250 Hz)
Frequency Response (± 1 dB)
Frequency Response (-2, +5 dB typical)
Dynamic Range
( 10 Hz to 10 kHz, ref. 20 µPa)
Polarization Voltage
Connector
130D20
130D21
1/4"
Free-field
45 mV/Pa
100 Hz to 4 kHz
20 Hz to 15 kHz
1/4"
Free-field
45 mV/Pa
100 Hz to 4 kHz
20 Hz to 15 kHz
<40 to >122 dB
0V
BNC
<40 to >122 dB
0V
10-32
Precision Condenser Microphone Cartridges
Model Number
Diameter
Response
Open Circuit Sensitivity (at 250 Hz)
Frequency Response (±2 dB)
Polarization Voltage
Dynamic Range - 3% Distortion Limit [4]
Dynamic Range - Cartridge Thermal Noise [4]
Operating Temperature
377A01
377A02
377A03
377A10
1/4"
Free-field
4 mV/Pa
4 Hz to 80 kHz
0 V [1]
166 dB
30 dB (A)
-40 to 120 ºC
(-40 to 248 ºF)
1/2"
Free-field
50 mV/Pa
3.15 Hz to 20 kHz
0 V [1]
148 dB
14.5 dB (A)
-40 to 120 ºC
(-40 to 248 ºF)
1/2"
Free-field [2]
50 mV/Pa
4 Hz to 16 kHz
0 V [1]
>146 dB
15 dB (A)
-40 to 80 ºC
(-40 to 176 ºF)
1/4"
Pressure
1.6 mV/Pa
4 Hz to 70 kHz
0 V [1]
170 dB
34 dB (A)
-40 to 120 ºC
(-40 to 248 ºF)
377A11
377A20
377A40
1/2"
1/2"
1/2"
Pressure [3]
Random Incidence
Free-field
50 mV/Pa
50 mV/Pa
14.5 mV/Pa
3.15 Hz to 10 kHz 3.15 Hz to 12.5 kHz 3.15 Hz to 40 kHz
0 V [1]
0 V [1]
200 V
148 dB
148 dB
>160 dB
16 dB
16 dB
20 dB (A)
-40 to 120 ºC
-40 to 120 ºC
-40 to 150 ºC
(-40 to 248 ºF)
(-40 to 248 ºF)
(-40 to 302 ºF)
Notes: [1] Prepolarized [2] Supplied with Model 079A01 random incidence adaptor [3] Can also be used as a random incidence microphone [4] re 20 µPa
377A41
1/2"
Free-field
44.5 mV/Pa
3.15 Hz to 20 kHz
200 V
>146 dB
15 dB (A)
-40 to 150 ºC
(-40 to 302 ºF)
PREAMPLIFIERS AND ELECTRONICS
Preamplifiers
•
•
•
•
•
Preamplifiers
Small and rugged
Low noise floor
Large dynamic range
Wide frequency bandwidth
Stainless steel housing
Model Number
Diameter
Gain (Attenuation)
Frequency Response (± 0.2 dB)
Electrical Noise (A-weight)
Electrical Noise (Flat) [1]
Output Voltage
Constant Current Excitation
Operating Temperature
ICP™ Preamplifiers for Prepolarized Microphones
Models 426B03 and 426D01 are low-noise, general-purpose
prepolarized microphone preamplifiers powered by any
constant current (2 to 20 mA) ICP® sensor power supply. Both
models are supplied with TEDS capability and are designed to
be used with prepolarized microphones.
Output Connector
TEDS IEEE P1451.4
426B03
426D01
1/4"
-0.25 dB
2 Hz to 100 kHz
<2.5 µV
<6 µV
8 V pk
2 to 20 mA
-30 to 60 ºC
(-22 to 140 ºF)
10-32 Jack
Yes
1/2"
-0.08 dB
6 Hz to 126 kHz
<5 µV
<8 µV
8 V pk
2 to 20 mA
-40 to 65 ºC
(-40 to 149 ºF)
BNC Plug
Yes
Model 426B03
1/4” ICP™ Preamplifier
426A30
1/4"
1/2"
-0.25 dB
-0.25 dB
2 Hz to 200 kHz 0.9 Hz to 120 kHz
<2.2 µV
<4.5 µV
<6 µV
<7 µV
50 V pk
14 V pk
N/A
N/A
-30 to 70 ºC
-40 to 85 ºC
(-22 to 158 ºF)
(-40 to 185 ºF)
Integral Cable
7-pin Lemo
No
No
Notes: [1] 20 Hz to 20 kHz
ICP® Sensor Signal Conditioners
Model 426D01
1/2” ICP™ Preamplifier
426A31
•
•
•
•
•
Battery powered
Line-powered
DC-powered
Modular style
Multi-channel
Model 480C02
Battery Powered
ICP® Sensor
Signal Conditioner
Series 481A
16-channel Signal Conditioner
Traditional Preamplifiers
Model 426A30 is a rugged 1/2-inch diameter preamplifier
optimized for use with externally polarized microphones. It is
compatible with microphones as defined in the international
standard IEC 61094, and connects to a 200 V power supply
requiring a 7-pin cable with Lemo connectors.
Model 426A30
Preamplifier
Microphone Power Supply
• 0 to 200 volt polarization voltage
• Extended battery life (40 hours)
• 0 to 50 dB gain
• Drives long cables (500 ft, 152 m)
• Compatible with ICP® sensors
• Selectable flat (Z), A, and C-weighting
Model 480A25
Microphone Power Supply
Model 426A31 is a 1/4-inch diameter preamplifier with an
integral 3 m (10 ft) cable that terminates with a 7-pin Lemo
connector.
USB Dual Channel ICP®
Sensor Signal Conditioner
377A42
377A50
377A51
377A53
1"
Free-field
48 mV/Pa
2.6 Hz to 20 kHz
200 V
>146 dB
10 dB (A)
-40 to 150 ºC
(-40 to 302 ºF)
1/8"
Pressure
1.0 mV/Pa
6.5 Hz to 140 kHz
200 V
178 dB
40 dB (A)
-40 to 150 ºC
(-40 to 302 ºF)
1/4"
Pressure
0.4 mV/Pa
10 Hz to 20 kHz
200 V
>192 dB
31 dB (A)
-40 to 150 ºC
(-40 to 302 ºF)
1"
Pressure
45 mV/Pa
2.6 Hz to 8 kHz
200 V
>146 dB
10 dB (A)
-40 to 150 ºC
(-40 to 302 ºF)
Model 485B36
USB Dual Channel
ICP® Sensor
Signal Conditioner
Model 485B36 USB dual channel ICP®
sensor signal conditioner provides
current-regulated power for two ICP®
sensor input channels. The compact
unit operates from power obtained
from a computer’s Universal Serial
Bus (USB) port. Additionally, the
sensor bias voltage is decoupled from
the measurement signals, which are
outputted via a 3.5 mm stereo jack.
PROBE MICROPHONES, CALIBRATORS, AND ACCESSORIES
Probe Microphones
Precision Calibrators
Probe Microphones are compact units designed for use in
PCB offers calibrators for microphones that meet IEC and ANSI
standards. These units are easy to use and available with optional
adaptors for use with a variety of microphone diameters. These units
are lightweight, portable, and battery operated.
difficult measurement situations, such as those found in
small cavities, harsh environments, close proximity to the
sound source, or in high temperatures up to 800 °C
(1472 °F). The acoustic signal is guided to the microphone
through a detachable, stainless-steel probe. The high
Precision Calibrators
acoustic input impedance of the probe tip minimizes its
Model Number
influence on the acoustic field. Probe Microphones are
CAL200
CAL250
394A40
Microphone Sizes
1/4"*, 1/2"
1/8"*,1/4"*,1/2",1" 1/8",1/4",1/2",1"*
Frequency
1 kHz ± 1%
250 Hz ± 0.8%
250 Hz ± 0.5%
94 dB,114 dB ± 0.2 dB
Output Level (re 20 µPa)
114 ± 0.1 dB
114 ± 0.08 dB
Barometric Pressure
None
Automatic
Manual
Compensation
ANSI S1.40-1984 Compliant
Yes
Yes
N/A
IEC 60942 Class 1
Yes
Yes
Yes
internally compensated to equalize the static pressure at the
probe tip with the internal microphone pressure. Externally
polarized Model 377A25 includes a 10 ft (3 m) cable with 7-pin
Lemo connector termination, while Model 377A26 is a
prepolarized version with BNC jack output connector.
* With optional adaptors
In-line “A-weighting” Filter
The Model 426B02 in-line A-weighting filter is powered by constant
current excitation and is compatible with ICP™ microphone preamplifiers.
When using this filter, however, a minimum of 4 mA excitation current is
required of the ICP® sensor signal conditioner or readout device, which
incorporates ICP® sensor power.
Model CAL250
Acoustic Calibrator
Model 426B02
A-weighting Filter
Model 394A40
Pistonphone
Model CAL200
Acoustic Calibrator
Accessories (please consult factory for full line)
Total Customer Satisfaction:
Nose Cone
Windscreen
Adaptor
Swivel Head
Adaptor
Microphone
Cable
Preamplifier Holder
•
•
•
•
No minimum charges
No restocking fees
24-hour SensorLineSM for technical assistance
Satisfaction guaranteed or your money refunded
Microphone Clamp
The Vibration Division of PCB® Piezotronics, Inc. specializes in the development,
application, and support of shock and vibration sensors, microphones, impact
hammers, piezoelectric actuators, and dynamic strain sensors for acceleration
measurements, acoustic testing, and structural testing requirements. This product
focus, coupled with the strengths and resources of PCB, permits the Vibration
Division to offer exceptional customer service, 24-hour technical assistance, and
a Total Customer Satisfaction guarantee.
3425 Walden Avenue, Depew, NY 14043-2495 USA
Vibration Division toll free 888-684-0013
24-hour SensorLineSM 716-684-0001
Fax 716-685-3886 E-mail vibration@pcb.com
Web site www.pcb.com
ISO 9001:2000 CERTIFIED
A2LA ACCREDITED to ISO 17025
© 2004 PCB Group, Inc. In the interest of constant product improvement, specifications are subject to change without notice.
PCB, ICP, and Modally Tuned are registered trademarks of PCB Group, Inc.
SensorLine is a service mark of PCB Group, Inc. All other trademarks are properties of their respective owners.
VIB-MICS-0704
Printed in U.S.A.
Visit www.pcb.com to locate
your nearest sales office
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