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Enregistreur de données environnementales
Modèle DataLogic 3000 de Stevens

  
Description

The Stevens DataLogic 3000 (DL 3000) is a powerful, fl exible, versatile and scalable data logger. Designed using the latest technology, the DL 3000 will meet your data acquisition, processing, control and communication requirements.
The analog input channels can automatically select measurement range based on the signal level. These channels are isolated and offer voltage protected to provide reliable monitoring in noisy environments. Supported measurement and sensor types include temperature, 0-5 vdc, current, 4-20mA loops, resistance, bridges, strain gauges, thermocouples, quadrature, pulse and frequency - all returned in engineering units of your choice. The DL 3000 provides a 24 vdc loop power supply with suffi cient current to drive sensors. Switchable excitation and triggering are provided on all channels to simplify wiring and installation.
The DL 3000 provides several popular data bus I/O’s including; SDI-12 (Version 1.3), ModBus (optional), CAN Bus (ISO standard 11898), Four (4) RS-232 ports, RS-485, and USB 2.0. Other digital features include an SD card interface that stores over eight gigabytes of sampled data.
The DL3000 is designed to be the hub for future expansion hardware including; a graphics LCD display, enhanced digital and analog outputs for user control of sensors and actuators, Bluetooth and ZigBee wireless communications, Internet connectivity, unlimited data processing and management through richly evolving Web Services and an optional camera attachment with video surveillance options, allowing photographs or video of an event to be taken and stored as it happens.
User specifi ed operations and mathematical functions and equations can be programmed into the DL 3000 using a Visual Basic-like programming language.
Connecting the DL 3000 to telemetry modems, GPS, scales, PLC’s, and other intelligent devices is made simple with a separate serial port on the back panel offering high-speed communications.

Features

• Inputs: Analog, Pulse, RS232/485, CAN Bus, USB, Quadrature and SDI-12
• Outputs: RS232/422/485, USB 2.0 (compatible with USB 1.0), Modbus (optional), CAN Bus, Switch voltage excitations
• Simple configuration for telemetry applications:
        • Satellite
        • Radio
        • Telephone
        • Ethernet Links
• High-speed USB 2.0 port (compatible with USB 1.0 devices)
• SD memory card slot
• Windows software for easy:
        • Configuration and diagnostics
        • Rapid data exchange to PC
        • Graphical analysis
        • Tabular analysis
        • Data export to other software programs
• Optional programming using generic terminal program and/or display module
• Internet accessible via Web browser (optional)

Applications
• Stand-alone & real-time data acquisition and control
• Water resources:
        • Water level/stage
        • Water flow
        • Water quality
• Irrigation scheduling
• Meteorological & Agrimet
• Soil conditions
• SCADA
• Industrial

Technical Specifi cations
Power Requirements 8 - 16 VDC, <0.5mA standby current (telemetry system may require additional power)
Processor 32 bit ARM and dsPIC microprocessor
On-Board Data Storage FLASH storage, 4 Gigabytes
Recording Interval One (1) second to 24 hours
Real-Time Clock Accurate +/- 1 minute/month, leap year correction, temperature correction
Non-Volatile Memory All setup parameters and clock, lithium battery backup 8 gigabytes of expandable data storage with SD card
Message Size 6 - 250 bytes typically, no maximum
Serial Port Four (4) RS-232, minimum +/- 5 VDC levels, 300 to 9600 baud* USB 2.0
Analog to Digital 22-bit and 16-bit resolution Input impedance: 10 K ohm (min)
Communications Four (4) RS-232 (MODBUS optional) 2 front and 2 back
CAN bus
USB 2.0 (fully compatible wit USB 1.0 devices)
RS-485
10 Base-T Ethernet (optional)
Removable SD card
Digital to Analog (0-5 VDC) 12-bit resolution
Temperature and Humidity Operating: -40 to 158 F (-40 to 70 C)
NEMA 4 enclosure: 100% condensing
Aluminum enclosure: 95% non-condensing
Sensor Input Selections
(See expansion module for more inputs)
Up to Eight (8) Analog - Single Ended and up to Four (4) Analog - Differential Ended		 Input type: 2 wire, 4 - 20 mA current loop
Sensor power: 24 VDC, 12 VDC, 5 VDC, under fi rmware control
Accuracy & Resolution: 0.025%
accuracy, 0.002% resolution
One 22-bit analog differential isolated input: Resolution is 1 part in 4 billion
Pulse Count Input type: pulse
Sensor power: 5 or 12 VDC continuous
Maximum rate: 120 pulses per minute
Serial Input type: SDI-12 (up to 200 channels)
Sensor power: 12 VDC continuous, 5 or 12 VDC under fi rmware control (switched)
Two Switched Excitation Voltages: 5V, 12V and 24V
Physical Size (L x H x D) Gold anodized aluminum housing 6.5 in x 4.5 in x 2.3 in (165.1 mm x 114.3 mm x 58.4 mm)
Optional camera input Full support for NTSC & PAL, storage of video and images to on-board memory *115k baud for video

Add-ons and Accessories
The Stevens DataLogic 3000 is compatible with a wide range of equipment, including accessories to expand its performance.
External Display and GUI Interface
User interface is facilitated by PC / PDA application programs, a computer’s non-proprietary terminal program, and/or optional touch screen display. Stevens’ GUI interface programs for the DL 3000 support multiple languages such as English, Spanish and Chinese.
Expansion Modules
Multiple expansion modules can be added onto the DL 3000 for additional I/O requirements. Each expansion module supports eight (8) analog inputs, one (1) isolated 22 bit A to D input, one (1) analog output, one (1) pulse, one (1) quadrature pair, SDI-12 I/O channels, and one (1) power control output.