DT2485: DT-BUS Data Logger


The DT2485 enables low cost, stand alone, and radio-linked data collection of In-Place Inclinometer Strings and other digital bus (DT-BUS) sensors.


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DT-BUS sensors/instruments can be incorporated into a wireless, or stand-alone, data collection system by using the DT2485 Data Logger. The DT2485 provides wireless transmission of data collected from the DT-BUS sensors to an RSTAR Hub in a fixed location, or to a portable hub in a DT LINK System. More information on the RSTAR and DT LINK wireless data collection options can be found by viewing their separate brochures at rstinstruments.com.

DT-BUS instruments feature a single cable running the length of an entire chain of connected sensors/instruments, which are all individually addressable. As a result, DT-BUS simplifies installation and minimizes costs by eliminating the need of a separate cable for each sensor and also reduces the amount of cable to be managed during installation. The DT2485 also supports MODBUS sensors.

DT2485: DT-BUS Data Logger Specifications

Memory Records Up to 32,000 records; maximum of 56 sensors (*Note: The DT2485 has a total of 170 channels available; however, each biaxial in-place inclinometer sensor occupies 3 channels: A, B, and temperature).
Power Source Lithium standard cell battery
Battery Life 1-2 years with 10 sensors
6-7 months with 30 sensors
(NOTE: above specs based on 1 hour reading frequency and dependent on temperature and use)
Resolution Dependent on connected sensor type
Communication USB Type B connector (radio optional)
Dimensions 190 x 75 x 55 mm (7.48 x. 2.95 x 2.17 in.)
Temperature Range -40°C to 60°C (-40° to 140°F)
Enclosure NEMA 4X (IP66)


Memory Specifications

Memory Size 4MB
Data Transfer 4,000 data points per second
Interval Mode Biaxial Node: 3 seconds, Uniaxial Node: 2 seconds
Variable Rate Mode 16 user programmable sampling rates
Time Format Month / day / year   
Hour / minute / second
Memory Full Behaviour “Wrap around” or “fill & stop” option

The DT2485: DT-BUS Data Logger is commonly used where automated collection of data, wireless or otherwise, is required from instruments that are bussed together along one single cable running the length of the entire chain of connected sensors.

DT2485: DT-BUS Data Logger Ordering Info

DT2485 DT-BUS Data Logger DT2485
Cable Gland Nut Wrench DT100
Flylead with M12 for easy connection DT2485-M12
Pole Mount Kit DT20XX-M1
4” Secondary Enclosure DT2011-SE


RSTAR L900 – automated wireless data collection
DT LINK – semi-automated wireless data collection

File Name

DT Series Dataloggers Installation Guidelines

Resource Type

Language Version Download
English ELM0089B

File Name

DT Series Dataloggers Maintenance and Service Guidelines

Resource Type

Language Version Download
English ELM0088B

File Name

DT2485 DT-BUS Data Logger

Resource Type

Language Version Download
English ELB0050K
Portugese ELB0093A
Spanish ELB0061E

File Name

DT Logger Host Instruction Manual PC Platform

Resource Type

Language Version Download
English ELM0080L

File Name

DT Logger Host Instruction Manual – Mobile Platform

Resource Type

Language Version Download
English ELM0081D

Speak with an Expert

I’m very happy with the quality of the instrumentation and technical support from RST, as always. They worked with us from the initial stages of the project to ensure that we were fully prepared and equipped to use the RSTAR network for the first time. They delivered everything within the tight project time frame to ensure that there were no delays on site, and the submersible tilt meters looked like new even after over twelve months of being submerged in Thames water!
-Richard Lipscombe, BEng (Hons), Director & Principle Consultant - RL Geotechnical Ltd