SISGEO

OMNIAlog Datalogger

InfrastructureGeotechnical Instrumentation

The OMNIAlog has been designed “in house” by Sisgeo and is the result of over 25 years experience using different datalogger in geotechnical field. OMNIAlog is a versatile, cost effective and low powered datalogger supporting vibrating wire and all major geotechnical sensors. OMNIAlog has a Web & FTP server on board, 8 analog channels, expandable to 392 channels and 2 digital opto-isolated input ports. It can be managed by any Internet browser and also includes a 2GB USB pen drive support. More info.↗

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Specification

Digital output	One relay output (for alarm, etc.): volt-free closure (low voltage 30V, 2A)
Measurement rate (MR)	Max frequency 1kHz
Accuracy	0.1 Hz
PROTECTIONS	Electro-mechanical relays for each measuring channel: Electrical endurance: min. 2x105 operations, Mechanical endurance: 10x108 operations. Circuit protection: Gas Discharge Tubes (GDT): DC Breakdown Voltage 75V (± 20%@100V/µs) Impulse Breakdown Voltage 250V (@100V/µs ) typical Overvoltage and reverse polarity protection on power supply input. Short circuit protection on every outputs of sensor power supply.
Voltage (external power supply)	10 to 30 V DC (reverse polarity protected), max 5 A
External rechargeable batteries	12V DC nominal
Typical current drain (@12Vdc, external power supply)	Sleep mode: 100 µA ON: 62 mA - ON with ethernet connected: 87 mA - ON with display ON: 115 mA ON with display ON and ethernet connected: 142 mA Analog initialisation: 115 mA Measurement: 123 mA (with 12 mA @ 24 V sensor consumption)
Operating temperature	-30 to +70°C (display -20 to +70°C)
Humidity	80%
Overvoltage category	II
Pollution degree	2
Sound levels	< 74dBA
Maximum height of use	3000m

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OMNIAlog Datalogger

Specification

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