DT800 Datataker Data Logger

DT800 Datataker Data Logger

   Data sheet on DT800 (.pdf file, opens in new window)   12/09

   User Manual on DT800 (.pdf file, 6MB, opens in new tab or window)

Stand Alone Data Acquisition & Logging
• Easy-To-Use Software
• 42 Sensor Channels, 16 Digital
• High Speed Data Acquisition
• Intelligent Data Management
• Ethernet Networking
• Built-In Modem Support
• Supports ATA Flash Cards

Versatile Measurement The DT800 has 42 analogue inputs, giving 42 separate single ended channels or 24 differential channels. These are isolated and over-voltage protected, with measurement across 12 auto-scaling ranges from 10mV to 13V full scale.
All common measurement types are supported, including DC and AC(RMS) voltage, current, resistance, temperature, bridges, strain gauges, 4-20mA loops and frequency.
Adjustable excitation and triggering are provided on all channels. A Serial Sensor Port is also included.
Digital I/O consists of 8 digital input channels, and 8 digital I/O channels. Two of the digital inputs have adjustable threshold for the monitoring of low level signals.
Digital state, counts at up to 10kHz and triggering are supported on all digital channels.

The Next Generation  The dataTaker DT800 is the first in a new series of faster and smarter measurement systems. Combining data acquisition, data logging and controller, the DT800 is a robust, stand alone, high speed unit featuring 16 bit resolution, battery backed internal SRAM and ATA Flash memory card support, 12V or internal battery operation, and a powerful operating system and internal file structure.

Superior Data Storage and Communications
An RS232 port, a 10baseT Ethernet port and a PC card port are provided as standard for dataTaker programming and data retrieval. Data can either be returned in real time or stored to internal RAM or a memory card. The DT800 stores programs and data in DOS format enabling full compatibility with Windows. The DT800 has modem dial-in and dial-out capability. TCP/IP is supported, which means that the DT800 can communicate over a local area network. In addition, an on-board FTP server is provided so that files can easily be transferred via the Ethernet or RS232 ports.

 Detailed picture of front
showing input connections

 Picture of front detail for printing (vertical)

Sensor Excitation
Programmable with 12 bit resolution, available on any
analog channel as a balanced output:
DC Voltage mode: 0 to 20V
DC Current mode: 0 to 15mA
DC Power mode: 0 to 200mW

Multiplexer
Type: solid-state
Common mode range: ±13V or –2V to 22V selectable
Over voltage protection: ±40V
Lightning protection: secondary, via ±30V varistors

Sampling Modes
Normal Mode
Sampling for accuracy and noise rejection by interleaved
sampling over one or more line cycle periods.
Effective resolution: 16 bits
Common mode rejection 20mV range: 130dB
Fast Mode
Fast continuous sampling with reduced noise rejection
Effective resolution: 15 bits

Burst Mode
Provides sampling of fast events with triggering capability
Sampling speed: 1kHz to 100kHz
Effective resolution: 13bits
Trigger: pre, mid and post triggering
Trigger source: analog level or digital input
Buffer size: 100 to 65,000 raw samples
Minimum time between bursts: 100ms - 30s

Sensor Support

Supports a wide range of sensors including, but not limited
to, those listed below. A wide range of sensor scaling
and linearizing facilities is provided including polynomials,
expressions and functions.

Thermocouples
Types: B, C, D, E, G, J, K, N, R, S, T
Calibration standard: ITS-90
Accuracy (case at 25°C): per NIST Monograph 125
Reference junction compensation accuracy:
  At case temperature 25°C:   ±0.2°C
  At case temperature –20 to +60°C: ±0.5°C

Thermocouple integrity testing by resistance measurement.

RTD's
Materials supported: Pt (385 & 392), Ni, Cu
Resistance range: 10 to 10,000.
Resistance measurement accuracy:
4 wire: 0.05 %, 3 wire: 0.15 %
Monolithic Temperature Sensors
Types supported: LM34 - 60, AD590, 592
Bridge Sensors
Configurations: 4-wire and 6-wire
Excitation: voltage or current
Bridge completion: external
4-20mA Current Loop
Shunt: External 20ohm to 200ohm resistor

Analog Output
Number of channels: 1 (share with burst mode trigger)
Voltage range: –10V to +10V (10mV resolution)
Maximum current: 20mA

Digital Channels

Bi-directional channels: 8, 2 of which have 10mV
sensitive inputs for magnetic pick-ups
Input only channels (logic level): 8
Counter Channels
Number: 16, shared with digital I/O channels
Size: 32 bit (>4,000,000,000 counts)
Speed:
Channels 1- 6 100Hz (3Hz in Sleep Mode)
Channels 7- 8 10kHz (1kHz in Sleep Mode)
Channels 9-16 100Hz (3Hz in Sleep Mode)

Digital Output
Number: 8 shared with bi-directional channels
Output type: open-drain FET, +30V, 100mA

Serial Sensor Channel
Modes: RS232, RS422, RS485, SDI-12
Handshake lines: RTS, CTS
Baud rate: 300 to 56k baud
Power for sensors: switched 12V at 500mA
Programmable prompt string
Data parsing allows multiple assignments to variables

Calculation Channels
Any expression involving variables & functions
Functions: sin(), cos(), tan(), asin(), acos(),
atan(), abs(), sqrt(), average, maximum,
minimum, time of max, time of min, variance, integral,
histogram, rainflow (fatigue analysis)

Alarms
Condition: high, low, within range and outside range
Delay: optional time period for alarm response
Actions: set digital outputs, execute any dataTaker
command, transmit message

Scheduling of Data Acquisition
Number of schedules: 11
Schedule rates: 10ms to days
Maximum number of channels: 500

Accessories Included
Software: DeLogger, DeTransfer, DePlot, DeMerge on CD
Batteries: 12V 2.2AHr gel cell and 3.6V lithium
Manuals: "Getting Started with DT800", "DT800 User's
Manual" and "DeLogger Manual"
Sensors: 1 Type K thermocouple, 1 potentiometer
Line adaptor: 110/240Vac to 12Vdc, 800mA
RS232 cable: for PC with 9 to 25 pin adaptor
Tools: single and dual cage clamp tools

Communication Interfaces

Ethernet
Interface: 10BaseT
Protocols: TCP/IP (UDP, FTP)
RS232
Speed: 300 to 115k baud (57,600 default)
Handshake lines: CD, RI, DSR, DTR, RTS, CTS
Modem support: auto-answer and dial out
Protocols: PPP, TCP/IP (UDP, FTP)
USB*
Mode: device (slave), 12M bits/sec
PC Card Modems*
Types: Modem*, GSM Modem*, Satellite Terminal*, GPS*

*Note - Support will be available in later firmare release
by free download

System

Firmware Upgrade
Via: RS232, Ethernet or FLASH PC Card
Real Time Clock
Normal resolution: 200µs
Accuracy: 10s per month at 25°C
PC Card (PCMCIA) Support
Number of slots: 1 x Type 1, 2 or 3 (PCMCIA 2.1)
Card types: FLASH, Modem*, GSM Modem*
Socket voltage: 3V or 5V (400mA) and 12V (60mA)

*Note - Support will be available in later firmare release
by free download

Warranty
The dataTaker range is covered by a 3 year warranty on workmanship and parts.

Physical
Dimensions: 260 x 110 x 90mm
Weight: 3.1kg (5.5kg shipping)

Environment
Temperature range: –45°C to 70°C
Humidity: 85% RH, non-condensing

Power Supply
External voltage range: 11 to 28Vdc
Power Consumption
In normal mode: 3W (1W while inactive)
Sleep mode: 5mW (400µA from internal 12V battery)
Typical low power operation: 20mW

Internal Main Battery
Voltage (Capacity): 12V (2.2AHr) lead acid gel cell
Temperature compensated charging: –10°C to +70°C
Operating time: continuous sampling: 5 hours
10 minute sampling: 2 months
1 hour sampling: 5 months
Memory and Real Time Clock Battery
Voltage (Capacity): 3.6V (400mAHr) lithium, 1/2 AA