Bruel & Kjaer Bruel and Kjaer 4938-A-011 microphone with 2670 preamplifier, US $700.00 – Picture 0

Bruel & Kjaer Bruel and Kjaer 4938-A-011 microphone with 2670 preamplifier, US $700.00 – Picture 1

Bruel & Kjaer Bruel and Kjaer 4938-A-011 microphone with 2670 preamplifier, US $700.00 – Picture 2

Bruel & Kjaer Bruel and Kjaer 4938-A-011 microphone with 2670 preamplifier, US $700.00 – Picture 3

Bruel & Kjaer Bruel and Kjaer 4938-A-011 microphone with 2670 preamplifier, US $700.00 – Picture 4

Bruel & Kjaer Bruel And Kjaer 4938-a-011 Microphone With 2670 Preamplifier

US $700.00

Saint-Petersburg, default, Russian Federation
Jun 9th

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Type 4938-A-011 is designed for high-frequency measurements. By using new materials and a new way of mounting the diaphragm, the microphone is geared to withstand rough handling and high temperatures of up to 300°C (572°F). Uses High temperature measurements High level measurements High frequency measurements Flush mounting Features Sensitivity: 1.6 mV/Pa Frequency: 4 – 70 000 Hz Dynamic range: 30 – 172 dB Temperature: –20 to +80°C (–4 to +176°F) Polarization: 200 V External This microphone is a factory-assembled combination of: Microphone: Type 4938 Preamplifier: Type 2670 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.

Condition:	Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. ...	Brand	B&K
Microphone	4938-A-011 - 1/4 -inch pressure-field microphone
Country/Region of Manufacture	Denmark
Preamplifier	Type 2670, 4 Hz to 70 kHz, 200 V polarization