Advanced design and technology plus 25 years of geotechnical expertise have produced the dataTaker DT85GM 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. DT85GM 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.
The dataTaker DT85GM intelligent data logger is a fully featured low-powered logging platform with an integrated cellular modem, making it perfect for remote applications. The rugged design and wide operating temperature range of the DT85GM provides reliable operation in virtually any environment.
The DT85GM’s perfect balance of performance with low-power also allows you to use a smaller solar panel without compromising on functionality.
Forget travelling long distances to get your data. Utilise the DT85GM’s automatic data delivery features to schedule your data to be automatically emailed to your inbox every day, week, month or other time interval.
More sophisticated systems can make use of the automatic data delivery features to send logged data to an FTP server. Alarm conditions can also trigger data delivery in addition to sending alarm messages to multiple email addresses or mobile phones.
The DT85GM is configured directly in your web browser using dataTaker’s dEX graphical interface. dEX takes you through the configuration of your logger, showing you wiring diagrams and allowing you to decide – in as much or as little detail – how you want to the system to work, suiting both novice or advanced users.
Using the internal modem you can even re-configure your system remotely over the internet if required.
|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
|Analog Voltage Accuracy||±0.15 of Reading + (Full Scale Reading * 0.01%)|
|Effective Resolution||18 bits|
|Analog Out Range||Voltage: 10m-10000mVDC
|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: 7 high speed or 3 phase encoder
|RS232/RS422/RS485 serial sensor port||1|
|RS232 host port||No|
|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)
|Integrated Cellular Modem||Interfaces: EDGE, GPRS, GSM, WCDMA, HSUPA, HSDPA
EDGE/GPRS/GSM Freq: 850/900/1800/1900 MHz
WCDMA/HSUPA/HSDPA Freq: 850/1900/2100 MHz
|Temperature Range||–45°C to 70°C|
Strainstall Malaysia a specialist in structral monitoring solutions designed and installed a long term monitoring system on the bridge joining Malaysia and Singapore. The bridge is a crucial link between the two countries critical to transporting up to 200,000 vehicles a day. Our client’s system was based around the dataTaker DT85GM with 6 logging stations located throughout the bridge…Read More