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Nor1292 Triaxial geophone
The Nor1292 triaxial geophone 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.
About
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.
Standards
- EN 55032:2015/A11+A1:2020
- EN 55035:2017/A11:2020
Specifications
Function: Measures the vibration in 3 orthogonal directions; two horizontal and one vertical, marked x, y and z.
Sensitivity: 26 Vs/m (or 26 mV/mm/s) – individually calibrated.
Temperature sensitivity: Less than ±0,02% per °C.
Output impedance: 312 ohm (nominal).
Resonance frequency: 4.5 Hz – damping factor 0.7.
Frequency range: 1 Hz – 500 Hz with frequency compensation ( – individually calibrated).
Insulation between signal terminals and enclosure: Min. 10 Mohm (Max 100 V).
Cable length: 3 m.
Connector: 7-pin Lemo type 1B, male.
Temperature range: -40 to +70 °C (operating and storing).
Humidity range: Non-condensing.
Environmental protection: IP66 (with the exception of the connector).Weight: 2.5 kg.
Size: 14 cm x 14 cm x 9.5 cm (w x d x h).
Warranty period: 3 years.
Accessories
Vibration
Nor1408A Preamplifier extension cable
Downloads
Certificates
Certificates Nor1292
Vibration
Nor133/Nor136 Vibration meters
Sound level meters
Nor140 Sound analyser
