The HB-01 HiBand Preamp is a single-channel, high-bandwidth, low-noise charge amplifier for
single- or multi-element non-contact capacitance probe. The HB-01 provides low-noise dc bias
for probe. The Preamp can operate with long cables to probe (up to 30 feet max recommended).
The preamp output has 50-ohm impedance for driving long coaxial cables to data acquisition
system (up to 1000 feet or more). When combined with Aerogage�s proprietary signal
processing and Vibration Monitor System, the HB-01 is capable of high-accuracy measurement of
tip clearance of individual blades on rotating turbine engines. The patented vibration
software eliminates effects of cable vibration and provides long-term absolute calibration.
please call for pricing
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Standard Specifications (variations available on request)
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Gain | 4 V / pF
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Probe Bias | 100 V for probe resistance > 33 K ohms
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Bandwidth | 100 Hz � 5 MHz
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Resolution | 0.01 mil typ, depending on probe configuration
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Accuracy | 1% typ, absolute calibration, not affected by amplifier drift
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Stability | > 10,000 hours
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Power | Normal operation:
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| +15 V @ 70 mA
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| -15 V @ 30 mA
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| Input shorted to ground:
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| +15 V @ 250 mA
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| -15 V @ 30 mA
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SNR | > 50 dB wideband
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| > 100 dB narrowband (with vibration software)
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Output Z | 50 ohms
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Location | Up to 30 feet from probe
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| 1000� (min) from data acquisition system
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Dimensions | 1.125� x 3.25� x 5.5�
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Connectors | Input: BNC
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| Output: BNC
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| Power: 9 pin D
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