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 |
| 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 |
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| 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 |
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| 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. |
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| 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) |
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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. |
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| 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. |
4 bi-directional channels, shared with Counters: Input Type: 4 logic level (max 20/30V) |
Digital Input/Outputs 8 bi-directional channels Input Type: 8 logic level (max 20/30V) |
| 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 | |
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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 |
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| 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. |
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| 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. |
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| 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
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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 |
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| Dimensions | 180 x 137 x 65mm | 180 x 137 x 65mm | 300 x 137 x 65mm |