Tri-axial geophone Norsonic Nor1292
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Head Office: Ho Chi Minh City
- Tel: +84 2839 778 269 / 3601 6797
- Email: sales@lidinco.com
- Add: 487 Cong Hoa Street, Ward 15, Tan Binh Dist, HCM City, Vietnam
Office: Bac Ninh City
- Tel: +84 222 730 0180
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- Add: 184 Binh Than Street, Vo Cuong Ward, Bac Ninh City, Vietnam
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Specification
Data is being updated
Description
- The triaxial geophone Nor1292 is a sensitive transducer for vibration velocity based on a rugged geophone construction used by seismologists and geophysicists for decades. One main application is for the measurement of vibrations in buildings. The frequency response is essentially flat from the resonance frequency 4,5 Hz and up to at least 500 Hz. However, by using the frequency compensation found in some Norsonic instruments like the vibration meters Nor133 and Nor136, the applicable frequency range may be extended downwards to 1 Hz. This also applies if the signal is measured as function of frequency, e.g. 1/3-octave bands where frequency correction may be used.
- The transducer is a passive device and needs no power for operation.
- The geophone Nor1292 plugs directly into the input socket of the six channel vibration meter Nor136. It will then connect directly to channel 1, 2 and 3. A second geophone may be connected to channel 4, 5 and 6 of the same Nor136 instrument by the use of an adapter. By the use of adapters, the unit may be connected to the triaxial vibration analyzer Nor133.
- The unit may also be applied in connection with a suitable sound level meter like sound analyser Nor140. Only one direction can then be measured at the time by a one-channel instrument.
Measurement Range
- The measurement range is limited upwards by the maximum displacement the transducers can handle and the maximum acceleration where the transducer follows the movement of the supporting surface. The maximum displacement is 1,8 mm peak-to-peak giving an RMS-value of 0,6 mm. Below resonance this will increase since the coil will follow the movement of the housing. If the acceleration is too high, the geophone will not follow the vibrating surface to be measured. The limit in the diagram below is set to 2 m/s2.
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