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Rough and stable measurement special microphone 4948 type surfaces MicrophoneHandling Company
Hottinger Brüel & KjærCategories
Click on the part number for more information about each product
| Image | Part Number | Price (excluding tax) | sensitivity | Sensitivity (250Hz) | Frequency response (sound pressure sound field) | Lower frequency (–3db) | Pressure adjustment vent | Diacphram co -amal frequency number | Equivalent air volume | Correction by Type 4228 with DP 0977 or DP 0979 | Self -noise | Maximum operating range | Clipping limit | Constant current supply | Supply voltage (when no load) | Bias voltage | Maximum output voltage | Maximum output current | Output impedance | Estimated long -term stability | Operating temperature range | Storage temperature | Temperature coefficient (250Hz) | Atmospheric pressure coefficient (250Hz) | Operation humidity range | Humidity impact | Vibration sensitivity (<2kHz) | Micro hon unit diameter | Micro hon unit height | Microphone unit weight |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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4948 |
Available upon quote |
1.4 MV/PA |
--57 DB ± 3 DB RE 1 V/PA, 1.4 MV/PA |
10Hz to 10kHz ± 1db Re 250Hz, 5Hz to 20kHz ± 3db Re 250Hz |
1 Hz to 5 Hz |
Front vent (diaphragm end) |
24kHz, representative value (90 ° phase shift) |
6.8mm^3 ± 0.8mm^3 (2σ) |
0.00db |
30 µV or less, linear 22.4 Hz ~ 22.4 kHz |
Less than 160 DB SPL (500 Hz, 3%distortion) |
165 DB Re 20 µPa Peak (7 V Peak maximum sensitivity) |
Deltatron Supply 2 MA ~ 20 MA, Nominal 4 MA |
+ 22V to + 30V DC, minimum 18V for limited specifications |
12.7V ± 1.3V |
> 7v Peak |
1 mA or less of peak value supply current |
<50Ω 1kHz, 22Ω 430PF representative value |
20 ° C, 50%or less, less than 0.001 dB/year, 20 ° C, 90%or less, 0.025 dB/year, 100 ° C, less than 0.5db/month in dry air |
--55 to +100 ° C (–67 to +212 ° f) |
–30 to +70 ° C (--22 to +158 ° f) |
+ 0.013db/℃ |
--0.007db/KPA |
0 ~ 100% RH dew condensation |
0.1db less condensed |
A typical example of 1 m/s^2 o'clock 65 db, etc. |
20mm (0.79 ″) |
2.5mm (0.1 ") |
2.3 Gramms |
|
|
4948-B |
Available upon quote |
1.4 MV/PA |
--57 DB ± 3 DB RE 1 V/PA, 1.4 MV/PA |
10Hz to 10kHz ± 1db Re 250Hz, 5Hz to 20kHz ± 3db Re 250Hz |
1 Hz to 5 Hz |
Front vent (diaphragm end) |
24kHz, representative value (90 ° phase shift) |
6.8mm^3 ± 0.8mm^3 (2σ) |
0.00db |
30 µV or less, linear 22.4 Hz ~ 22.4 kHz |
Less than 160 DB SPL (500 Hz, 3%distortion) |
165 DB Re 20 µPa Peak (7 V Peak maximum sensitivity) |
Deltatron Supply 2 MA ~ 20 MA, Nominal 4 MA |
+ 22V to + 30V DC, minimum 18V for limited specifications |
12.7V ± 1.3V |
> 7v Peak |
1 mA or less of peak value supply current |
<50Ω 1kHz, 22Ω 430PF representative value |
20 ° C, 50%or less, less than 0.001 dB/year, 20 ° C, 90%or less, 0.025 dB/year, 100 ° C, less than 0.5db/month in dry air |
--55 to +100 ° C (–67 to +212 ° f) |
–30 to +70 ° C (--22 to +158 ° f) |
+ 0.013db/℃ |
--0.007db/KPA |
0 ~ 100% RH dew condensation |
0.1db less condensed |
A typical example of 1 m/s^2 o'clock 65 db, etc. |
20mm (0.79 ″) |
2.5mm (0.1 ") |
2.3 Gramms |
Click on the part number for more information about each product
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