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dataTaker - Model DT85G -Geotechnical Data Loggers
DataTaker DT85G is a high end loggers which supports vibrating wire and other Geotechnical sensors. This logger is capable to read up to 960 Vibrating Wire sensors (when using 16x CEM20) and offers the same support on analog and digital channels. DT85G provides a low cost option for connecting massive number of sensors since each channel is capable to read Vibrating Wire. With the same support on high capacity memory and various communication options, this logger is ready for complex Geotechnical applications.
- Vibrating Wire Support
- Carlson, Electro Level & LVDT support
- Strain Gauge Support
- Dual Channel Isolation Technology
- Up to 48 Analog (± 50V) sensor inputs
- Expandable to 960 analog inputs
- Programmable Analog Output
- Modbus for SCADA connection
- Web & FTP client / server
- USB memory for easy data and program transfer
Advanced design and technology plus 25 years of geotechnical expertise have produced the dataTaker DT85G GeoLogger - A versatile, powerful - yet low power & cost effective data logger.
It support vibrating wire and other geotechnical sensors such as Slope Indicator, RST Instruments, Geokon, Soil Instruments, Roctest, AGI - Applied Geomechanics Inc. DT85G is also capable to test sensor integrity through audible frequency
With temperature compensation (thermistor), 16 analog channels are capable to read up to 16 vibrating wire sensors. If temperature compensation is not required this logger can read up to 48 vibrating wire sensors.
Further expansion up to 320 sensors (with temperature compensation) or 960 sensors (without temperature compensation) is possible.
With the standard unit able to store up to 10 million data points (expandable) you can log as much or as little as you need. Overwrite or stop logging once allocated memory is full, archive data on alarm event, copy to USB memory or transfer via FTP/ Email, the choice is yours.
Communications features include RS232, USB and Ethernet, connect to the DT85G locally, remotely through a modem or over the Internet. The web interface allows users to configure the DT85G, access logged data and see current measurements as mimics or in a list using a web browser.
FTP/ Email provides data to your office over the internet or wireless network, without the need for polling or specific host software.
- Land Slide Prevention
- Dam Wall Monitoring
- Mining Exploration
- Tunnel Excavation
- Concrete Curing
- GPS
- Max Sampling rate (Hz) 40
- Analog Inputs
- 48 (2-wire common reference)
- 32 (2-wire isolated)
- 16 (3 and 4-wire isolated)
- Analog Input Range
- Voltage: ±30m,300m,3000m,50000mVDC
- Current: ±30mA
- Resistance: 1MΩ
- Frequency: 450kHz
- Analog Voltage Accuracy ±0.15 of Reading + (Full Scale Reading * 0.01%)
- Effective Resolution 18 bits
- Analog Outputs 1
- Analog Out Range
- Voltage: 10m-10000mVDC
- Current: 0-24mA
- Excitation
- Analog Channel: selectable 2µA, 250µA or 2.5mA precision current source, 4.5V voltage source or switched external supply
- Switchable 12V/5 regulated power output (max 300mA)
- Digital IO 8 bi-directional channels
- Counter
- Low speed counters: 8 counters shared with digital inputs
- Dedicated counters: 4 high speed or 2 phase encoder
- RS232/RS422/RS485 serial sensor port 1
- RS232 host port 1
- USB Port 1
- Ethernet Port 1
- Data Storage 128MB (upgradeable to 2GB)
- Vibrating Wire supported Yes
- Protocols Supported Modbus, FTP, HTTP, XML, SMTP, NTP and SDI-12
- CEM20 Expansion Module supported Yes
- Power Requirements 10-30 VDC
- Internal Battery 6Vdc 1.2Ah Lead Acid
- Real Time Clock Accuracy
- ± 1 min/year (0°C to 40°C)
- ± 4 min/year (–40°C to 70°C)
- Dimensions(mm) 180x137x65
- Weight 1.5kg
- Temperature Range –45°C to 70°C
- Warranty 3 years