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Datataker Comparison

DT80, DT82E & DT82I, DT85 – Comparison Table

General Description of Datataker data loggers

Analog Channels

A basic concept of the dataTaker data logger is that analog inputs can be used with more than one type of sensor, without needing additional input modules.

Each “Analog Channel” can have one or more sensors, depending on the sensor requirements.
The “Analog Channel” is a group of 4 terminals that can be used in many combinations.

DT80 has five, 4 wire (4 terminal) channels,
DT82 has two, 4 wire (4 terminal) channels,
DT85 has sixteen, 4 wire (4 terminal) channels.

These allow sensors and signals based on voltage, current, resistance and frequency to be measured.
These are the fundamental signals output by most sensors.
It is not necessary to use all four terminals on each channel.

Each of these analog channels can be connected to between 1 and 3 sensors or signals, depending on the requirements of that sensor or signal type.

Refer to the user manual for detailed connection information.

FAQ on DT80, DT81 & DT85 (and G versions) (opens new tab or window, mfr site)

Part numbering:

‘E’ version is Environmental (low power, has SDI-12. No USB) (Note that the DT82E Environmental logger replaces the obsolete DT81).

‘I’ version is Industrial (RS232/422/485 and encoder input, instead of SDI-12. No USB).

‘G’ version supports vibrating wire strain gauges – Carlson, electro level & LVDT.

‘L’ versions are Low Power.

‘M’ versions have a modem built in.

DataTaker Data Loggers Comparison Table

Versions

DT80 Series

DT80L Low Power option

DT80M has a modem 

DT80G GeoLogger has support for Vibrating Wire Sensor Carlson, electro level & LVDT

CEM20 Channel Expansion Module, 20-60 analog channels (not for DT82)

DT82 Series

DT82E (Environmental)

1 x SDI-12 supports up to 10 SDI-12 sensors

DT82EM also has a modem

DT82I (I for Industrial)

1 x serial sensor port  (RS232, RS422, S485)

1 x encoder input

(no SDI-12)

DT85 Series

DT85L  Low Power option

DT85M has a modem

DT85G GeoLogger has support for Vibrating Wire Sensor Carlson, electro level & LVDT DT85GM also has a modem

CEM20 Channel Expansion
 Module 20-60 analog channels (not for DT82)

E&OE.
Please confirm specs with the actual pdf data sheets

DT80 Data sheet (v3, pdf)

DT80M Data sheet (pdf)

DT80G Data sheet (pdf)

CEM20 Channel Expansion (pdf)

DT82E Data sheet (pdf)

DT82EM Data sheet (pdf)

DT82I Data sheet (pdf)

DT85 Data Sheet (pdf)

DT85M Data sheet (pdf)

DT85G Data sheet (pdf)

DT85GM Data sheet (pdf)

CEM20 – see left column

Prices of loggers include the accessory kit
Available without the kit: less $83
DT80: $2555+GST
DT80L: $2760+GST
DT80M: $3235+GST
DT80G: $3050+GST
CEM20: $1100+GST
DT82E: $1648+GST
DT82EM: $2310+GST
DT82I: $1855+GST
DT85: $3656+GST
DT85L: $3862+GST
DT85M: $4315+GST
DT85G: $4170+GST
DT85GM: $4830+GST
CEM20: $1100+GST
Modem:  M version only M version only: Inbuilt Modem Features
Alarms: Send email or SMS messages
Data: Send data to an email address or FTP server
Remote access: Connect to dEX or Command interface
SIM interface: SIM Socket (1.8V/3V)Networks and Frequencies
USA Only: Interfaces: EDGE, GPRS, GSM, CSD
All other places: Interfaces: EDGE, GPRS, GSM, WCDMA, HSUPA, HSDPAFrequencies:
EDGE/GPRS/GSM: 850/900/1800/1900 MHz
WCDMA/HSUPA/HSDPA: 850/1900/2100 MHz
Analog Channels:
Differential (4-wire, double-ended) and see below for more
5 analog input channels
Each channel is independent and supports:
one isolated 3-wire or 4-wire input, or two isolated 2-wire inputs, or three common referenced 2-wire inputs.The following maximums apply.Two wire with common reference terminal: 15 (expandable to 300*)
Two wire isolated: 10 (expandable to 200*)
Three and four wire isolated: 5 (expandable to 100*)
2 analog input channels
Each channel is independent and supports:
one isolated 3-wire or 4-wire input, or two isolated 2-wire inputs, or three common referenced 2-wire inputs.The following maximums apply:Two wire with common reference terminal: 6
Two wire isolated: 4
Three and four wire isolated: 2
16 analog input channels
Each channel is independent and supports:
one isolated 3-wire or 4-wire input, or two isolated 2-wire inputs, or three common referenced 2-wire inputs.The following maximums apply:Two wire with common ref terminal: 48 (expandable to 960)*
Two wire isolated: 32 (expandable to 640)*
Three and four wire isolated: 16 (expandable to 320)*
Expandable to
* Expansion requires CEM20
100 *
* Expansion requires CEM20
  300 or 320 or 960*
* Expansion requires CEM20
NOTE: The DT80, DT82, and the DT85 loggers have different characteristics related to isolation.
They use “Dual channel” isolation technology to allow two isolated two wire inputs on the same channel as well as disconnecting AGND (EXT#) when not in use.
Analog Channels ctd DT80 DT82E & DT82I DT85
2-wire isolated (see note above),
expandable to
10
expandable to 200 *
4
not expandable
32
expandable to 600 *
Single Ended (ground ref) with one shared terminal 15
(with no differential)
6
(with no differential)
48
(with no differential)

Analog Input Expandable

* Expansion requires CEM20

Yes, to 300 * No expansion Yes, to 800 *
Multiplexer Type:
SS (Solid State) or Relay Contacts
Relay Relay Relay
Analog Input Range ±30V ±30V ±30V

Overall range is ±30Vdc, however the default range for most measurement types is <±3Vdc.> ±30 mVdc, ±300 mVdc or ±3 Vdc (autoranging).

The higher ±30Vdc range is only available if the internal attenuation is on. By default all channel types except HV (high voltage) and AS (analog state) channel types have attenuation off.

Overvoltage protection +/- 35 VDC +/- 35 VDC +/- 35 VDC
Common Mode Range ±3.5V or
±35V on 30V range
±3.5V or
±35V on 30V range
±3.5V or
±35V on 30V range
Max Samples per second (analog) 25 Sa/sec 25 Sa/sec 25 Sa/sec
Built-in Data Points Storage 10 million
also has USB memory stick support
10 million
also has USB memory stick support
10 million
also has USB memory stick support
  DT80 DT82E & DT82I DT85
Digital & Counter Inputs
– shared

8 bi-directional channels, shared with Counters:

Input Type: 8 logic level (max 20/30V)

Output Type: 4 with open drain FET(max: 30V, 100mA), 4 with logic output.
Relay Output: 1 latching relay, contacts (max: 30Vdc, 1A)

4 bi-directional channels, shared with Counters:

Input Type: 4 logic level (max 20/30V)
Output Type: 3 with open drain FET(max: 30V, 100mA), 1 with logic output.
Relay Output: 1 latching relay, contacts (max: 30Vdc, 1A)

Digital Input/Outputs

8 bi-directional channels

Input Type: 8 logic level (max 20/30V)
Output Type: 4 with open drain FET (max: 30V, 100mA), 4 with logic output.
Relay Output: 1 latching relay, contacts (max: 30Vdc, 1A)

Counter Channels Low Speed Counters
8 counters shared with digital inputs.
Low speed counters do not function in sleep mode.
Size: 32 bit
Max Count rate: 10 Hz
Dedicated Counter Inputs
4 high speed or 2 encoder (quadrature) inputs, size: 32 bit Max Count rate: 10 kHz Input type: 2 logic level inputs (max  ±30V),
2 sensitive inputs (10mV) for magnetic pick-ups (max  ±10V)
Low Speed Counters
4 counters shared with digital inputs.
Low speed counters
do not function in sleep mode.
Size: 32 bit
Max Count rate: 10 Hz
Dedicated Counter Inputs

4 high speed inputs
Size: 32 bit
Max Count rate: 10 kHzInput type: 2 logic level inputs (max ±30V), and
2 programmable inputs as either logic level inputs or
sensitive inputs (10mV) for magnetic pick-ups (max ±10V)
Low Speed Counters
8 counters shared with digital inputs.
Low speed counters do not function in sleep mode.
Size: 32 bit
Max Count rate: 10 Hz
Dedicated Counter Inputs
4 high speed or 2 phase encoder (quadrature) inputs
Size: 32 bit
Max Count rate: 10 kHz
Input type: 2 logic level inputs (max ±30V),
2 sensitive inputs (10mV) for magnetic pick-ups (max ±10V)
  DT80 DT82E & DT82I DT85

SDI-12 (Serial Data Interface at 1200 bps)

SDI-12 Info (Wiki, new tab)

4 SDI-12 inputs, shared with digital channels. Each input can support multiple SDI-12 sensors. DT82E only:
1 SDI-12 input, shared with a digital channel
up to 10 SDI-12 sensors
Yes (multiple networks),
shared with digital channel
Serial Sensor Channel
RS232
2 DT82E: Host RS232 only*
DT82I: two: 1 x Serial Smart Sensor port (RS232, RS422, RS485)1 x Host RS232 port*
2
Isolated Communications with host computer

Host RS232 Port, Speed: 300 to 115200 baud (57,600 default)

Flow Control: Hardware (RTS/CTS), Software (XON/XOFF), None

Handshake lines: DCD, DSR, DTR, RTS, CTS

Modem support: auto-answer and dial out

Protocols: ASCII Command, TCP/IP (PPP), Modbus, Serial Sensor

  Generic Serial Sensor
Flexible options to allow data to be logged from a wide range of smart sensors and data streams. Available ports:
Serial Sensor Port (RS232, RS422, RS485) or Host RS232 Port*Baud rate: 300 to 115,200*If used as a Serial Sensor channel then the Host Port is not available for other communications.
Generic Serial Sensor
Flexible options to allow data to be logged from a wide range of smart sensors and data streams.
Available ports: Host RS232 Port* DT82I only: 2 ports (see above)Baud rate: 300 to 115,200*If used as a Serial Sensor channel then the Host Port
is not available for other communications
Generic Serial Sensor
Flexible options to allow data to be logged from a wide range of smart sensors and data streams.
Available ports: Serial Sensor Port (RS232, RS422, RS485) or Host RS232 Port*Baud rate: 300 to 115200*If used as a Serial Sensor channel then the Host Port is
not available for other communications.
  DT80 DT82E & DT82I DT85
USB Port Interface: USB 1.1     (virtual COM port)
Protocol: ASCII command
Yes USB No USB Yes USB
Ethernet Port 10BaseT (10Mbps) Protocols: TCP/IP, FTP 10BaseT (10Mbps) Protocols: TCP/IP, FTP 10BaseT (10Mbps) Protocols: TCP/IP, FTP
Web Interface
FTP for automatic data transfer
Modbus for SCADA connection
Yes Web Server
Access current data and status from any web browser.
Custom HTML pages can be defined.
Download data in CSV format.
Command interface window.
Define mimic displays.
FTP Client
Automatically upload logged data direct to an FTP server.
Modbus Server (Slave)
Access current data and status from any Modbus client
(e.g. SCADA system)
Yes
Display built in Yes LCD, 2 line by 16 characters, backlight.
Display Functions: channel data, alarms, system status.
Keypad: 6 keys for scrolling and function execution.
Status LEDs: 4 for sample, disk, attention and power.
Yes
Panel Mount Display option No No No
Resolution:
(15-bit gives 1µV)
18 bit 18 bit 18 bit
Volts. Current, 4-20ma, Resistance Yes Yes Yes
Frequency, Period Yes Yes Yes
Thermocouple support
Types: B, C, D, E, G, J, K, N, R, S, T
Calibration standard: ITS-90
11 types 11 types 11 types
RTD support (Pt, Cu, Ni) Yes Yes Yes
Bridges, Strain Gauge support Yes Yes Yes
Thermistor Arrays:
YSI 400xx Series* Resistance range: <10kohms, <20kohms with parallel resistor
Yes.
Other thermistor types are supported by thermistor scaling and calculated channels.Resistance range: <10kohms **
**Resistance range can a parallel resistor.
Vibrating Wire support DT80G has Vibrating Wire Sensor Support No DT85G has Vibrating Wire Sensor Support
  DT80 DT82E & DT82I DT85
Digital channels
Input/Output shared with Counter channels
8 shared I/O
1 latching relay

4 bidirectional
Input Type: 4 logic level (max 20/30V)DT82E: Output Type: 3 with open drain FET (max: 30V, 100mA), 1 with logic output.DT82I: Output Type: 4 with open drain FET (max: 30V, 100mA)

 

8 shared I/O
1 latching relay
Digital Inputs, not shared, logic level      
Digital Output Ch types 4 open drain FET,
4 with logic output
3 open drain FET,
1 with logic output
4 open drain FET,
4 with logic output
Relay output, latching, contacts (max: 30Vdc, 1A) 1 relay contact 1 relay contact 1 relay contact
Counters, slow (<10Hz) 8 shared with DI 4 shared with DI 8 shared with DI
Counters: high speed or phase encoders 4 or 2 4 or 1
DT82I only: 1x phase encoder
4 or 2
Counter Input Ch types Size: 32 bit (>4,000,000,000 counts) 2 logic level inputs
(max ±30V),
2 sensitive inputs (10mV) for magnetic pick-ups
(max ±10V)
2 logic level inputs
(max ±30V),
2 sensitive inputs (10mV) for magnetic pick-ups
(max ±10V)
2 logic level inputs
(max ±30V),
2 sensitive inputs (10mV) for magnetic pick-ups
(max ±10V)
Counter Channel Expansion No No No
Supports Datataker network (older models DT50, DT500, etc, have this) No No No
Internal Battery: dataTaker DT80G, DT80L, DT80GL, DT82E, DT85L and DT85GL do not have a 6 Vdc internal battery 6Vdc (1.2AH)
DT80G, DT80L, DT80GL do not have a 6 Vdc internal battery
A larger 6v external battery can be connected (disconnect the internal battery)

DT82E has no battery

DT82I: 6Vdc (1.2AH)

6Vdc (4AH)
DT85L and DT85GL do not have
a 6 Vdc internal battery
Power Consumption
(ext 12V @ 1 sec)
  DT82I: 1350mW
DT82E: 560Mw
 
Dimensions 180 x 137 x 65mm 180 x 137 x 65mm 300 x 137 x 65mm
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