DT85 Universal

  • Dual Channel Isolation Technology
  • Up to 48 Analog (± 50V) sensor inputs
  • Expandable to 960 analog inputs
  • 12 flexible digital terminals
  • 2 Serial ‘Smart Sensor’ ports
  • SDI-12 (multiple networks)
  • Modbus for SCADA connection
  • Web & FTP client / server
  • USB memory for easy data & program transfer
  • Programmable Analog Output

Call for configuration and price. 1-800-956-4437

Description

DT85 Universal Input Data Logger – The Smart Universal Input Data Logger

The new DT85 Universal Input Data Logger Series 4 version has increased sampling speed, measurement range and programmable analog output.

The dataTaker DT85 smart data logger provides an extensive array of features that allow it to be used across a wide variety of applications. The DT85 is a robust, standalone, low power data logger featuring USB memory stick support, 18-bit resolution, extensive communications capabilities and built-in display.

The dataTaker DT85’s Dual Channel concept allows up to 32 isolated or 48 common referenced analog inputs to be used in many combinations. With support for multiple SDI-12 sensor networks, Modbus for SCADA systems, FTP and Web interface, 12V regulated output to power sensors, the DT85 is a totally self-contained solution.

Versatile Measurement

Connect an array of sensors through the versatile analog and digital channels, high-speed counter inputs, phase encoder inputs and programmable serial sensor channels.

Temperature, voltage, current, 4-20mA loops, resistance, bridges, strain gauges, frequency, digital, serial and calculated measurements can all be scaled, logged and returned in engineering units or within statistical reporting.

Set up sampling, logging, alarm and control tasks to suit your own requirements while interfaces for smart sensors, GPS, and other intelligent devices expand the DT85 flexibility.

Superior Data Storage and Communications

With the standard unit able to store up to 10 million data points (expandable) you can log as much or as little as you need. Overwrite or stop logging once allocated memory is full, archive data on alarm event, copy to USB memory or transfer via FTP/ Email, the choice is yours.

Communications features include RS232, USB, and Ethernet, connect to the DT85 locally, remotely through a modem or over the Internet. The web interface allows users to configure the DT85, access logged data and see current measurements as mimics or in a list using a web browser.

FTP/ Email provides data to your office over the internet or wireless network, without the need for polling or specific host software.

Read more about the DT85 Universal Input Data Logger in this apps note about monitoring a solar energy system.

Specifications

Analog Channels
Analog Channels16 analog input channels (expandable to 320*)
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
2 Wire w/ Com. Ref. Terminal: 48 Channels (expandable to 960*)
2 Wire Isolated: 32 Channels (expandable to 640*)
3 or 4 Wire Isolated: 16 Channels (expandable to 320*)
*Expansion requires option CEM20
Fundamental Input RangesThe fundamental inputs that the DT85 can measure are voltage, current, resistance and frequency. All other measurements are derived from these.
SamplingIntegrates over 50/60 Hz Line Period for Accuracy and Noise Rejection
Maximum Sample Speed: 40 Hz
Effective Resolution: 18 Bits
Linearity: 0.01%
Common Mode Rejection: >90dB
Line Series Mode Rejection: > 35dB
InputsInter-channel Isolation: 100V (relay switching)
Analog Section Isolation: 100V (opto-isolated)
Input impedence: 160KΩ, >100MΩ
Current mode range: ±3.5V or ±55V (attenuator on/off)
Sensor Excitation (Supply)Analog Channels:
Selectable 2µA, 213µA or 2.5mA Precision Current Source
4.5V Voltage Source
or Switched External Supply
General Purpose: Switchable 12V/5V Regulated Supply for Powering Sensors & Accessories (Max. 150mA)
Analog OutputIsolated programmable 16-bit DAC: voltage 0-10V or current 0-24mA
Analog Sensors
ThermocouplesType: B, C, D, E, G, J, K, N, R S, T
Calibration Standard: ITS-90
RTDsMaterials Supported: Pt, Ni, Cu
Resistance Range: 10Ω to 1MΩ
ThermistorsType: YSI 400xx Series, other Types*
Resistance Range: Up to 1MΩ
* Other Thermistor Types are Supported by Thermistor Scaling and Calculated Channels
Monolithic Temperature SensorsType: LM34 – 60, AD590, AD592, TMPxx, LM135, LM235, LM335
Strain Gauge and Bridge SensorsConfigurations: 1/4, 1/2 & Full Bridge
Excitation: Voltage or Current
4-20mA Current LoopInternal 100Ω Shunt or External Shunt Resistor
Digital Channels
Digital Input/Outputs8 Bi-Directional Channels
Digital Input Type: 8 Logic Level (Max. 20/30 Volts)
Digital Output Type: 4 With Open Drain FET (Max. 30V, 100mA), 4 with Logic Output
Relay Output1 Latching Relay, contacts (Max: 30Vdc, 1A)
Counter Channels
Low Speed Counters8 Counters Shared with Digital Inputs
32 Bit Size, 10 Hz Max Count Rate
Low Speed Counters do not Function in Sleep Mode
Dedicated Counter Channels7 High Speed Inputs or 3 phase encoder (quadrature) inputs
32 Bit Size, 100kHz Max Count Rate
5 Logic Level Inputs (Max ±30V)
2 Sensitive Inputs (10mV) for Magnetic Pick Ups (Max. ±10V)
Serial Channels
SDI-124 SDI-12 Inputs, Shared with Digital Channels
— Each input can support multiple SDI-12 Sensors
Generic Serial SensorFlexible 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)
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
Calculated Channels
GeneralCombine values from analog, digital and serial sensors using expressions involving variables and functions.
FunctionsArithmetic, Trigonometric, Relational, Logical and Statistical
Alarms
ConditionHigh, Low or Within Range and Outside Range
DelayOptional Time Period for Alarm Response
ActionsSet Digital Outputs, Transmit Message, Execute any DataTaker Command.
Scheduling of Data Acquisition
Number of schedules11
Schedule rates10ms to days
Data Storage
Internal Data StorageCapacity: 128mb = approx 10,000,000 data points
Removable USB storage deviceType:compatible with USb 1.1 or USB 2.0 drivers, e.g. Flash drive
Capacity: approx 90,000 data points per megabyte
Communication Interfaces
Ethernet PortInterface: 10BasteT (10Mbps)
Protocol: TCP/IP, Modbus (Master & Slave)
USB PortInterface: USB 1.1 (virtual COM port)
Protocol: ASCII command
Host RS232 PortSpeed: 300 to 115,200 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 (Master & Slave), Serial Sensor

Serial Sensor PortInterface: RS232, RS422, RS485
Speed: 300 to 57,600 baud
Flow Control: Hardware (RTS/CTS), Software (XON/XOFF), None
Protocols: Modbus (Master & Slave), Serial Sensor
Network TCP/IP Services
NetworkEthernet and/or Host RS232 (PPP) ports
Command InterfaceAccess the ASCII command interface via TCP/IP
Web ServerAccess Current Data and Status from any Web Browser
— Custom pages can be defined — Download Data in CSV Format
— Command Interface Window
— Define Mimic Displays
Modbus Server(slave)Access current data and status from any Modbus client (e.g. SCADA system)
Modbus Server (master)Read/write data from modbus sensors and devices including PLC’s, dataTaker loggers, modbus displays etc.
FTP ServerAccess logged data from any FTP client or web browser
FTP ClientAutomatically upload logged data direct to an FTP server.
System
Display and KeypadType: LCD, 2 Line by 16 Characters, Backlight
Functions: Channel Data, Alarms, System Status
Keypad: 6 Keys for Scrolling and Function Execution
Status LEDs: 4 (Sample, Disk, Attention, Power)
Firmware UpgradeVia: RS232, Ethernet, USB or USB disk.
Real Time ClockNormal resolution: 200µs
Accuracy: ±1 min/year (0°C to 40&degC), ±4 min/year (-40°C to 70°C)
Power SupplyExternal Voltage Range: 10 to 30 Volts DC
Internal battery: 6Vdc 1.2Ahr lead acid
Peak Power: 12 W (12VDC 1A)
Average power ConsumptionUsing 12Vdc external power source
1 Sec Sampling: 1350 mW
5 Sec Sampling: 500 mW
30 Sec Sampling: 135 mW
5 Min Sampling: 70 mW
1 Hr Sampling: 60 mW
Physical Environment
ConstructionPowder Coated Steel & Anodized Aluminum
Dimensions180 x 137 x 65mm
Weight1.5kg (4kg shipping)
Operating RangeTemperature: -45°C to 70°C (Reduced LCD Operation Outside Range: -15°C to 50°C)
Humidity: 85% RH, Non-condensing
Resources Included
Resource CDIncludes software, video training and user manual
Comms cableUSB cable
Line adapter110/240Vac to 15 Vdc, 800mA

Software

dEX data logger software is an intuitive graphical interface that allows you to configure your data logger, view real-time data in mimics, trend charts or tables and retrieve your historical data for analysis.

Browser-based Solution

dEX comes pre-installed on every logger in the DT80 range. The software loads in your web browser so there is no need to install cumbersome applications on your computer. Being browser-based, dEX will work on all major operating systems including Windows, Mac and Linux.

Configuration Editor

The configuration editor allows you to view, edit and save logger configurations in an easy-to-use Windows Explorer style user interface. The configuration tree view allows definition of measurement schedules and measurements.

dataTaker dEX Software Configuration Editor

Wiring diagrams show available wiring configurations for each sensor type. Configuration can be stored and retrieved on either the logger or a local computer.

Mimics and Charts

Mimics are organized into panels which can be modified to highlight custom alarm conditions or data grouping. Mimics include dials, bar graphs, thermometers, etc. Real-time chart recorder mimic allows you to view trends and historical data over a custom time/date range. Up to 16 mimics can be displayed on up to 5 mimic pages.

dataTaker dEX Software Mimics and Charts

Minimum System Requirements

• Web Browser – Internet Explorer (IE7 or later), Safari, Google Chrome, Firefox
• Adobe Flash Player (10 or higher)
• Screen resolution of 1024 x 768

dEX is available as an Android App in the Google play store or and Apple app store.

Accessories