4939-C-002 Connector

4939-C-002 Connector

TYPE 4939

1/4"麦克风，分机号极化

自由场麦克风，专为在 4 Hz 到 100 kHz 的频率范围内进行高级别和高频测量而设计。

TYPE 4939

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TYPE 4939麦克风采用不锈钢膜片和保护栅，可承受恶劣环境 ,可用于高达150°C(302°F)的高温测量。

麦克风需要外部极化电压，因此必须与经典前置放大器一起使用。外部极化麦克风可在较高温度下使用，而不会严重改变测量灵敏度。

Ul.

高级别测量

高频测量

模型工作

Code	灵敏度
-4939-A-011-	4 mV/Pa
-4939-C-002-	3.5 mV/Pa
-4939-L-002-	3.5 mV/Pa

TEDS Microphones	Data Sheets	English
TEDS Microphones	Data Sheets	Japanese

FAMILY 4939
Standard	IEC 61094
Sound field	Free field
Polarization	Classical
Sensitivity	3.5 mV/Pa, 4 mV/Pa
Lower frequency	4 Hz
Higher frequency	100 kHz
Lower dynamic range	35 dB
Higher dynamic range	164 dB
Diameter	1/4 inch
Venting	Side
Minimum Temperature	-20 °C
Maximum Temperature	80 °C
Minimum Temperature	-4 °F
Maximum Temperature	176 °F
Output signal (connectivity)	Passive

THIS MICROPHONE SET IS A 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 MICROPHONE-PREAMPLIFIER COMBINATION 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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