The set consists of the ¼" free-field microphone 40BE and the ¼" preamplifier 26CB with a Microdot coaxial connector.
This combination was chosen to save you time and give you the best possible properties and reliability in the microphone/preamplifier match. Your workflow is optimized and typical handling errors are minimized.
Not only have we made a set of the best possible combination of microphone and preamplifier, we have also included TEDS, the Transducer Electronic Data Sheet standard according to IEEE-1451.4. Multi-channel users appreciate having an intelligent transducer, like 46AF, that can supply properties, types, and calibration data directly to measurement platforms that support TEDS.
46BE is individually factory-calibrated and delivered with a calibration chart stating its specific open-circuit sensitivity and pressure frequency response.
Typical applications and use
The low sensitivity of the 46BE makes it well-suited for high-level and high-frequency measurements.
The 46BE uses the Microdot coaxial connector, which requires an input module that supports this technology.
For daily verification and check of your measurement setup, we recommend using a calibrator like G.R.A.S. 42AB Sound Level Calibrator.
For proper sensitivity calibration, we recommend using a pistonphone like G.R.A.S. 42AP Intelligent Pistonphone.
Quality and warranty
All G.R.A.S. microphone sets are made of high-quality materials that will ensure life-long stability and robustness. The microphone sets are all assembled in verified clean-room environments by skilled and dedicated operators with many years of expertise in this field.
The microphone diaphragm, body, and improved protection grid are made of high-grade stainless steel, which makes the microphone resistant to physical damage, as well as corrosion caused by aggressive air or gasses.
This, combined with the reinforced gold-plated microphone terminal which guarantees a highly reliable connection, enables G.R.A.S. to offer 5 years warranty against defective materials and workmanship.
If you accidentally damage the diaphragm on a G.R.A.S. microphone, we can—in most cases—replace it at a very reasonable cost and with a short turn-around time. This not only protects your investment, but also pleases your quality assurance department because you don't have to worry about new serial numbers, etc.
Before leaving the factory, all G.R.A.S. microphone sets are calibrated as a unit in a controlled laboratory environment using traceable calibration equipment. The sets are delivered with calibration charts including sensitivity values and frequency response graphs for the complete set. You can use the sensitivity value directly in your system setup.
Depending on the use, measurement environment, and internal quality control programs, we recommend recalibrating the microphone set at least every second year.
|Frequency range (±1 dB)||Hz||10 to 40 k|
|Frequency range (±2 dB)||Hz||4 to 80 k|
|Frequency range (±3 dB)||Hz||4 to 100 k|
|Dynamic range lower limit with G.R.A.S. preamplifier||dB(A)||35|
|Dynamic range upper limit with G.R.A.S. CCP preamplifier||dB||160|
|Set sensitivity @ 250 Hz (±2 dB)||mV/Pa||4|
|Set sensitivity @ 250 Hz (±2 dB)||dB re 1V/Pa||-48|
|Output Voltage Swing, max. @ 24 V bias voltage||Vp||± 8|
|Power supply min. to max.||mA||2 to 20|
|IEC 61094 designation||WS3F|
|Temperature range, operation||°C / °F||-30 to 60 / -22 to 140|
|Temperature range, storage||°C / °F||-40 to 85 / -40 to 185|
|Temperature coefficient @250 Hz||dB/°C / dB/°F||-0,01 / -TBD|
|Static pressure coefficient @250 Hz||dB/kPa||-0,013|
|Humidity range non condensing||% RH||0 to 100|
|Humidity coefficient @250 Hz||dB/% RH||-0,001|
|Influence of axial vibration @1 m/s²||dB re 20 µPa||60|
|TEDS UTID (IEEE 1451.4 )||27 v. 1.0|
|Connector type||Microdot 10/32|
|CE/RoHS compliant/WEEE registered||Yes/Yes/Yes|
|Weight||g / oz||8 / 0.282|
Typical frequency response (without protection grid). Upper curve shows free-field response for 0°, lower curve shows pressure response.
|G.R.A.S. AA0070||3 m Cable Microdot - BNC|
|G.R.A.S. 42AP||Intelligent pistonphone|
|G.R.A.S. 12AL||1-Channel CCP Power Module with A-Weighting filter|
|G.R.A.S. 12AQ||2-Channel CCP/LEMO Power Module with Signal Conditioning and Computer Interface|
|G.R.A.S. AA0034||2 m BNC-Cable 50 ohm|
|G.R.A.S. AA0035||3 m BNC-Cable 50 ohm|
|G.R.A.S. AA0036||5 m BNC-Cable 50 ohm|
|G.R.A.S. AA0037||10 m BNC-Cable 50 ohm|
|G.R.A.S. AA0038||30 m BNC-Cable 50 ohm|
|G.R.A.S. AA0039-XX||BNC-Cable 50 ohm Custom Length XX meter|
|G.R.A.S. AE0074||BNC female-female adapter|
|G.R.A.S. AL0003||Tripod Adapter Kit incl. Swivelhead|