KARAKTERISASI DATA LOGGER TIPE DI-718B US UNTUK PEREKAMAN MIKROSEISMIK
DI-718B US is a general data logger with 14-bit resolution. DI-718B US data Logger must be adjusted in order to be able used to record microseismic signals. The adjustment which needed is cable and connector configuration from sensor to data logger and format data changes. DI-718B US data logger mus...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2013
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/123950/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=64068 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | DI-718B US is a general data logger with 14-bit resolution. DI-718B US data
Logger must be adjusted in order to be able used to record microseismic signals. The
adjustment which needed is cable and connector configuration from sensor to data
logger and format data changes. DI-718B US data logger must be supported by 3
pieces of DI-8B51-02 module, SD card for mass storage of data recording, and
cable.
DI-718B UD data logger must be tested before acquiring microseismic data.
The objective of laboratory test is to get specification and characterization of data
logger. The field test was conducted to compare between recording system of DI-
718B US and reference recording system.
The result of laboratory test is inaccuracy 0,92%, precision 0,0034 V,
nonlinearity 0,13%, and resolution 0,61mV, and dynamic range 78,28 dB. The
signal to noise ratio value of DI-718B US is 86,05 dB. In field test, amplitude of
data recording from data logger is different with reference recording system. So
that is difficult to differentiate between microseismic signals and events. The
processing of amplitude spectrum showed the same model and dominant
frequency value between recording system of DI-718B US and reference
recording system. Spectrum amplitude graph of recorded data with DI-718B US
recording system has lower amplitude than spectrum amplitude graph of recorded
data with reference recording system. The main disadvantage of this data logger is
caused by DI-718B US has high instrument noise and lower resolution than
reference recording system. Data logger DI-718B US has not been able to record
microseismic waves. |
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