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Destination:
Measuring of vibration and shock acceleration in portative diagnostic systems and during laboratory studies.Features:
Piezoelement operation shear circuit. Combination of high axial sensitivity and self-resonant frequency. Strong structure and hermetically sealed body. Stability of characteristics and operational reliability.
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Parameter | Unit | SD77(SD77M) | SD90 |
Axial sensitivity (± 20 %) | pC/g*1 | 20 | 80 |
Relative transverse sensitivity | % | < 5 | < 5 |
Amplitude range | g*1 | ± 5 000 | ± 2 000 |
Max.shock limit (peak value) | g*1 | ± 10 000 | ± 4 000 |
Operating temperature range | °C | - 60+ 150 | - 60+ 150 |
Frequency range (ripple ± 1dB) | Hz | 0.512 000 | 0.58 000 |
Self-resonant frequency in attached condition | kHz | > 35 | > 20 |
Strain sensitivity | g·m/µm | < 0.005 | < 0.005 |
Capacitance | pF | 2 000 | 7001 000 |
Insulation resistance in normal conditions | MOhm | > 10 000 | > 10 000 |
Design | - | Shear | Shear |
Bottom insulation | - | yes*2 | no |
Housing material | - | st./steel (titanium alloy)*2 | st./steel (titanium alloy)*2 |
Weight (without connector and cable) | gram | 12 (10) | 42 (26) |
Supplied accessories | - | - | stud |
General view of SD77 |
| Electrical circuit ofSD77 |
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General view of SD77M (Design version without electrical body insulation) |
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Electrical circuit ofSD77M |
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General view of SD90 |
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Electrical circuit ofSD90 |
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Additional order accessories:
calibrators ; charge amplifiers , ; measuring amplifiers ; adapter box (in set with charge amplifier ); cables ; connector adapters ; probe tip ; wax for mounting ; magnet mounting bases ; stud ; insulating stud .*1 - 1g = 9.807 m·s-2 or 10 m·s-2 = 1.02 g;*2 - to be determined when making out an order.
General Purpose Vibration Transducers SD77 (SD77M), SD90