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Kinemetrics announces its latest line of earthquake sensors -- EpiSensor force balance accelerometers. Model FBA ES-T is a triaxial surface package useful for many types of earthquake recording applications. The unit consists of three EpiSensor force balance accelerometer modules mounted orthogonally in one small convenient package. With full-scale recording ranges of0.25 to4g (user selectable) the EpiSensor provides on-scale recording of earthquake motions even at near-fault locations and in a wide variety of structure types. The significantly improved bandwidth of DC to 200 Hz allows engineers and scientists to study motions at higher frequencies while maintaining the very important DC response that allows simple field calibration and reduces post-processing confusion.Output circuitry is also significantly enhanced. Four types of outputs can be field-selected by the user2.5V single-ended output for use with traditional Kinemetrics earthquake recording instruments;10V single-ended or20V differential output for use with Kinemetrics Makalu 24-bit digital recorder and other 24-bit digital recorders currently on the market.EpiSensor force balance accelerometers are also available in uniaxial (the FBA ES-U) and borehole (the FBA ES-SB shallow and FBA ES-DH deep) packages.
Select Episensor Configuration for your Application
| Key Features | |
| Low noise | |
| Extended bandwidth -- DC to 200 Hz | |
| User-selectable full-scale range | |
| Calibration coil (standard) | |
| Single-end or differential output (user selectable) | |
| Double-stage transient protection | |
| Specifications | |
| Dynamic range: | 155 dB+ |
| Bandwidth: | DC to 200 Hz |
| Calibration coil: | Standard |
| Full-scale range: | User selectable at0.25g,0.5g,1g,2g or4g |
| Outputs: | User selectable at2.5V single-ended;10V single-ended;± 5 V differential;± 20 V differential |
| Zero adjust: | Three user-friendly access holes for simple,safe, efficient adjustment |
| Linearity: | < 1000 g/g2 |
| Hysteresis: | < 0.1% of full scale |
| Cross-axis sensitivity: | < 1% (including misalignment) |
| Zero point thermal drift: | < 500g/°C (1g sensor) |
| ESD, RF, EMI protection: | Double stage transient protection withgas arrester elements |
| Power consumption: | 12 mA from +/- 12V (Standard Amp), 35 mA from +/- 12 V (Low Noise Amp), Single supply option available |
| Physical size: | 13.3 cm diameter (cylinder), 6.2 cm high |
| Mounting: | Single bolt mounting, three adjustable leveling feet and bubble level |
| Connection: | Single military-style metal connector |
| Operating Temperature: | -20 to 70C (0 to 160F) |
| Housing: | Watertight enclosure |
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