FAMILY 4954

1/4-INCH FREE-FIELD MICROPHONE, PREPOLARIZED

Free-field microphone designed for high-level and high-frequency measurements over a frequency range of 4 Hz to 100 kHz.

FAMILY 4954

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Type 4954 is a 1/4-inch Prepolarized Free-field microphone and is specially designed for high-level and high-frequency measurements.

The use of a laser welded stainless steel diaphragm and a stainless steel protection grid, make this microphone capable of withstanding rough environments.

High-frequency measurements
High-level measurements
Cost-effective measurements

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Code	Standard	Polarization	Lower frequency	Higher frequency	Lower dynamic range	Higher dynamic range	Maximum Temperature	Maximum Temperature
-4954-A-011-	IEC 61094	Classical	3 Hz	80 kHz	34 dB	164 dB	80 °C	176 °F
-4954-A-023-	IEC 61094	Classical	3 Hz	80 kHz	34 dB	164 dB	80 °C	176 °F
-4954-A--	IEC 61094	CCLD	16 Hz	80 kHz	40 dB	159 dB	80 °C	176 °F
-4954-B--	IEC 61094	CCLD	16 Hz	80 kHz	40 dB	159 dB	80 °C	176 °F
-4954-W-004-	IEC 61672	Classical	50 Hz	22 kHz	40 dB	159 dB	100 °C	212 °F

1/4-inch Prepolarized Free-field TEDS Microphone Types 4954-A and 4954-B

Data Sheets

English

FAMILY 4954
Standard	IEC 61094, IEC 61672
Sound field	Free field
Polarization	CCLD, Classical
Sensitivity	2.8 mV/Pa
Lower frequency	16 Hz, 50 Hz, 3 Hz
Higher frequency	80 kHz, 22 kHz
Lower dynamic range	40 dB, 34 dB
Higher dynamic range	159 dB, 164 dB
Diameter	1/4 inch
Venting	Side
Minimum Temperature	-20 °C
Maximum Temperature	80 °C, 100 °C
Minimum Temperature	-4 °F
Maximum Temperature	176 °F, 212 °F
Output signal (connectivity)	Passive

List of accessories available for all variants of this family

Product Code	Description
-4228---	Pistonphone calibrator, 250Hz, 124dB,Cla
DB-0264---	Adaptor 1/4" Mic use with UA-0033
DP-0775---	Adaptor 1/4" Mic for 4228/4231
UA-0033---	Electrostatic Actuator 1/2" for HBK Mic
UA-0122---	Adaptor 1/4"Mic to 1/2"Preamp,RightAngle
UA-0123---	Adaptor 1/4"Mic to 1/2"Preamp, Straight
AO-0587-D-030-	Cable SMB(F) to BNC(M), 3m, coax
UA-0033-W-001-	Electrostatic Actuators for Type 4180
UA-0385---	Nose Cone for 1/4" Mic
UA-1588---	Holder for 1/4" Preamp use with a Tripod
-4294---	Calibrator Accel, Hand-Held, by Battery

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This microphone consists of Microphone Type 4954 laser welded to a ¼" microphone preamplifier. The unit is assembled in a clean-room environment and sealed together, after which it is assigned one single type number and one single serial number. This means that the combined unit has better precision and long-time stability, and is handled as one complete unit.

The transducers can be connected to any CCLD input and support IEEE P1451.4 V0.9 TEDS (Transducer Electronic Data Sheet). The unit also contains TEDS, which means that information about the serial number, type and sensitivity is stored within it.

BENEFITS OF USING A MICROPHONE-PREAMPLIFIER SET:

Better stability and precision. Because the unit is assembled in clean-room facilities, there is no contamination.
Ease of use. Your analyzer front-end and software will automatically detect the type number, serial number and sensitivity because of the built-in TEDS technology. There is no need to enter this manually for every channel.
Calibration integration. The TEDS technology means the microphone is automatically detected and identified by your data acquisition software, allowing it to be easily integrated with your calibration database.
Fewer errors. As your data acquisition software automatically knows the microphone type, serial number and sensitivity, manual inputs are greatly reduced – reducing human errors.

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