HBK surface microphones Microphones
HBK surface microphones: sensors and measurement devices by HBK for microphones.
This series on the HBK site (opens in a new tab)
Models in the series
One column per model: what differs between the models of the series.
| Parameter | 4948 | 4948-A | 4948-B | 4948-W-005 |
|---|---|---|---|---|
| Microphone diameter | 0.5 inch | 0.5 inch | 0.5 inch | 0.5 inch |
| Interfaces | Ethernet | Ethernet | Ethernet | Ethernet |
| A-weighted inherent noise | 55 dB(A) | 55 dB(A) | 55 dB(A) | 55 dB(A) |
| ADC sampling rate | 131072 samples/s | 131072 samples/s | 131072 samples/s | 131072 samples/s |
| Number of measurement channels | 1 | 1 | 1 | 1 |
| Frequency response | 5–20000 Hz | 5–20000 Hz | 5–20000 Hz | 5–20000 Hz |
| Sound field | Pressure / coupler / confined space | Pressure / coupler / confined space | Pressure / coupler / confined space | Pressure / coupler / confined space |
| Maximum SPL | 160 dB SPL | 160 dB SPL | 160 dB SPL | 160 dB SPL |
| Microphone polarization | CCLD | CCLD | CCLD | CCLD |
| Sound field | Not specified | Not specified | Not specified | Not specified |
| Status | Active | Active | Active | Active |
The industries we serve
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Aerospace
- Aircraft door-lock position detection
- Airlines & Aerospace Our balancing machines and moment weighing scales for aerospace drives ensure maximum precision, ease of use, and modular flexibility delivering reliability and performance without compromise contributing to your economic success.
- Automatic balancing machines Automatic balancing machines from Schenck are advanced solutions for precise balancing of rotating components in automated production processes. We offer systems and stations for balancing crankshafts, wheels and tires, turbochargers, electric armatures, drives, axle drive units, torque converters, drive shafts, disc-shaped rotors, as well as fans. Our systems increase productivity, ensure consistent quality, and are tailored to the needs of the automotive, energy, and industrial sectors.
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Medical industry
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Environment
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Electric motor manufacturing
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Food industry
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Automotive industry
- Airlines & Aerospace Our balancing machines and moment weighing scales for aerospace drives ensure maximum precision, ease of use, and modular flexibility delivering reliability and performance without compromise contributing to your economic success.
- Automatic balancing machines Automatic balancing machines from Schenck are advanced solutions for precise balancing of rotating components in automated production processes. We offer systems and stations for balancing crankshafts, wheels and tires, turbochargers, electric armatures, drives, axle drive units, torque converters, drive shafts, disc-shaped rotors, as well as fans. Our systems increase productivity, ensure consistent quality, and are tailored to the needs of the automotive, energy, and industrial sectors.
- Axle Drives With our balancing machines for front and rear axle transmissions, the measured unbalance is corrected by drilling into the drive flanges of the transmissions (welding optional). We support you with our interdisciplinary expertise in the production of front and rear axle transmissions from the initial idea to the design stage through to series production.
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Industrial automation
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Plastics
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Optics
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3D printing
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Battery manufacturing
Frequently asked questions
Answers to the most common questions about our products and services
It measures sound pressure on surfaces, including wind-tunnel and flight tests, using flush mounting to reduce flow disturbance.
Both support TEDS. Version 4948 B adds a CIC input for remote verification of the measurement channel, including preamplifier and cabling.
Its built-in DeltaTron preamplifier connects to a CCLD input. Match the power supply and cable to the microphone configuration.
Pressure-field response is specified from 10 Hz to 10 kHz at ±1 dB, and from 5 Hz to 20 kHz at ±3 dB, relative to 250 Hz.
The sheet specifies operation from −55 to +100 °C. Its titanium construction supports corrosion resistance; also check the selected cable and mounting conditions.
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