KMS - Model 820 - Data Acquisition Unit
From Customized Geophysical Systems
The KMS-820 Data Acquisition Unit (DAU) is developed for EM (ElectroMagnetic) and micro-seismic applications to obtain subsurface resistivity and velocity structure for oil and gas exploration. It also can be used in general purpose acquisition and long term monitoring services.
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The system comes with various option to facilitate...
The system comes with various option to facilitate microseismic and electromagnetic reservoir monitoring. It also synchronizes and integrates with our borehole acquisition system and our marine MT acquisition node.
The acquisition unit has six 24-bit low noise, low drift channels and unlimited digital channels. We use the digital channel in the MT version as input to record 32- bit fluxgate magnetic fields at the same time when acquiring coils. The 24 bit architecture goes to 100 KHz sampling and the 32-bit architecture to 4 000 Hz.
These six channels are sampled simultaneously and synchronized with GPS. In addition, KMS-820 has expandable synchronized digital interface for additional customized timing requirements and has dedicated interface to drive KMS-500 marine or the 5100 land transmitter.
With the KMS-831 32-bit digital interface the unit can be expanded to unlimited channels (though not practical in operational context). The KMS-831 connect to 3 additional channels with up to 4 kHz sample rate.
In a 11 components MT mode you can connect electric fields (analog input), high frequency AMT coils LEMI-118 (analog input), standard MT coils (LEMI-120) (KMS-831 connection) and ultra low frequency digital fluxgate sensor.
Multiple communication and data harvesting options exist: USB cable, SD card exchange, long range wireless, WI-FI via router (when available), and WIFI point-to-point when direct connections is required.
OPTIONS:
KMS-820 L - as KMS 820 but with front end lightening protection
KMS-820 WIFI - standard WIFI chip allowing two WIFI modes:
- connection to a router (so you can access it from anywhere over the Internet)
- ad hoc direct connection to a WIFI device (like your laptop when you do not have router access)
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