TYPE 4138

1/8" DRUCKFELDMIKROFON, EXTERN POLARISIERT

Druckfeldmikrofon für sehr hochfrequente Messungen in engen Räumen mit einem Frequenzbereich von 6 Hz bis 140 kHz.

TYPE 4138

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Der Typ 4138 ist für Messungen mit hoher und sehr hoher Frequenz sowie für Messungen auf engstem Raum konzipiert. Da der Typ 4138 extern polarisiert ist, muss er mit einem klassischen Vorverstärker verwendet werden.

Hochfrequente und sehr hochfrequente Messungen
Anwendungen, die eine hohe räumliche Auflösung erfordern oder bei denen der Platz begrenzt ist, z. B. Modelltests

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Empfindlichkeit keyboard_arrow_down

Code	Empfindlichkeit
-4138-A-015-	0.56 mV/Pa
-4138-C-006-	0.8 mV/Pa
-4138-L-006-	0.8 mV/Pa

FAMILY 4138
Standard	IEC 61094
Sound field	Pressure field
Polarization	Classical
Sensitivity	0.56 mV/Pa, 0.8 mV/Pa
Lower frequency	6.5 Hz
Higher frequency	140 kHz
Lower dynamic range	52.2 dB
Higher dynamic range	168 dB
Diameter	1/8 inch
Venting	Side
Minimum Temperature	-30 °C
Maximum Temperature	100 °C
Minimum Temperature	-22 °F
Maximum Temperature	212 °F
Output signal (connectivity)	Passive

List of accessories available for all variants of this family

Product Code	Beschreibung
-2669-B--	"1/2"" Mikrofonvorverstärker, mit 3 m Ka
-2669-C--	"1/2"" Mikrofonvorverstärker mit 7-pol.
-2669-L--	"1/2"" Mikrofonvorverstärker, mit 3 m Ka
-4228---	Pistonphon Klasse 1, 124 dB, 250 Hz
-4231---	Akustischer Kalibrator der Klasse 1 - 94
DP-0774---	"1/8"" Adapter für Akustischen Kalibrato
UA-0033---	"Elektrostatisches Eichgitter für 1/2""
UA-0036---	"1/8"" - 1/2"" Mikrofonadapter"
UA-0160---	"1/8"" - 1/4"" Mikrofonadapter"
UA-0355---	"Nasenkonus für 1/8"" Mikrofon"

THIS MICROPHONE IS A FACTORY-ASSEMBLED COMBINATION OF:

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 unit also contains TEDS, which means that information about the serial number, type and sensitivity is stored within it.

THE BENEFITS OF USING A MICRPHONE-PREAMPLIFIER NCOMBINATION ARE:

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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