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UM-0085-B09 DT80 Range User Manual Page 15
RG
• The
DT82I
is designed for industrial applications.
• The
DT85
is an expanded and enhanced version of the DT80.
•
The DT80L and DT85L are low power variants of the DT80 and DT85.
• The DT80W and DT85W are WiFi variant of the DT80 and DT85.
• The DT80G and DT85G GeoLoggers are designed for Geotechnical applications
• The DT80GW and DT85GW are WiFi variant of the DT80G and DT85G.
• The DT80GL and DT85GL are low power variants of the DT80G and DT85G.
• The DT82EM3 , DT80LM3 , DT85LM3 and DT85GLM3 contain an inbuilt GSM/EDGE/WCDMA cellular modem.
• The DT82EM2 , DT80LM2 , DT85LM2 and DT85GLM2 contain an inbuilt GSM/EDGE cellular modem.
• The CEM20 (Channel Expansion Module) is a 20-channel analog multiplexer which can be used to expand the
number of analog input channels on a DT80 or DT85.
All of these models operate in a similar way; the differences are mainly to do with the number of input channels and other
hardware features.
Table 1 (P16)
and
Table 2 (P17)
lists the main differences between each model.
Series 1, 2, 3 and 4
In January 2008, the original DT80, DT81 and DT85 models were superseded by enhanced Series 2 models. These
offered an all-new web based interface ( dEX ), additional power outputs, and more flexible analog input switching.
Series 3 models were introduced from October 2010. These supersede Series 2 and include enhanced resistance
measurement options and an isolated switched 5V power output.
Series 4 were launched from February 2017 and include increased voltage and resistance measurement ranges, flexible
12/ 5V power outputs and integrating with DAC converter to produce voltage/ current outputs as well as WiFi connectivity
support.
Along with DT80 Series 4 launch the new
CEM20 Series 2 has also been released. In CEM20 Series 2 all mechanical
relays has been replaced by opto-relays . As result all audible noise from the mechanical relay switching was eliminated.
Series 2, 3 and 4 units are clearly labelled as such on the front panel.When a logger model number is displayed, the
series is shown as a suffix, e.g. "DT85L-3" is a Series 3 DT85L.
GeoLoggers
The DT80G/GL and DT85G/GL "GeoLoggers" are equivalent to the DT80 and DT85, but also include direct support for
vibrating wire strain gauges , which are widely used in geotechnical applications; see
Strain Gauges – Vibrating Wire
(P325)
. Throughout this manual, references to the DT80 and DT85 also refer to the DT80G and DT85G respectively,
unless otherwise noted.
Low Power Models
Most DT80 models include an internal 6V lead acid battery. However the low power "
L
" and "
E
" models do not include
an internal battery and are instead optimised for operation with an external battery (often solar charged). Throughout this
manual, references to the DT80 and DT85 also refer to the DT80L and DT85L respectively, unless otherwise noted.
Modem Models
The " M " models (DT82EM, DT80LM, DT85LM, DT85GLM) include an integrated cellular modem, which provides a
convenient wireless solution for control of the DT80 and data retrieval. The " M3 " models support 2G and 3G networks
( GSM / GPRS / EDGE / WCDMA ), while the " M2 " models support 2G only ( GSM / GPRS / EDGE ). Apart from this
difference, the M2 and M3 variants operate identically.
WiFi Models
The "
W
" models (DT80W, DT80GW, DT85W, DT85GW) include an integrated WiFi interface, which provides a
convenient wireless solution for control of the DT80 and data retrieval. See
WiFi Communications (P240)
.
Channel Expansion Module
The CEM20 is an analog multiplexer designed to work with a DT80 or DT85 Series 2 logger and later revisions. It
provides an easy way to expand the number of input channels. Up to 16 CEM20 modules can be connected to a DT85,
giving a total of 320 input channels. See
The CEM20 (P375)
.
Note:
In this manual, the term DT80 (italics) is used to refer to all products (DT80, DT81, DT82 and DT85; Series 1, 2, 3 and 4). If a
feature or behaviour is specific to a particular model, this will be made clear in the text.