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Environmental Data Logger from Stevens

Environmental Data Logger from Stevens

Product Code:DLight


Need more Info? (514) 354-2511 - 1-800-463-4363

Description
Four (4) single-ended analog input channels are available and feature voltage surge and lightning protection to help protect sensitive instruments in areas with storm activity. Supported measurement and sensor types include temperature, 0-5 Vdc, 4-20mA, and pulse inputs for tipping buckets - with programmable log - ging and reporting intervals. The DLight provides a 24 Vdc loop power supply with sufficient current to drive sensors.

The DLight provides several popular data bus I/O’s including; SDI-12, one (1) RS-232 port, and USB 2.0. Other digital features include a Secure Digital SD card interface that can store up to two gigabytes of sampled data.
The DLight supports connection to telemetry over the RS-232 port for reporting data over cellular, UHF/VHF, or satellite systems such as GOES.

 

Features
• Inputs: Analog, Pulse, SDI-12
• Outputs: V-out, Alarm, RS-232
• Simple configuration for telemetry applications:
  1. • Satellite
  2. • Radio (UHF/VHF)
  3. • Bluetooth
  4. • Wireless mesh networks
  5. • Cell modem
• High-speed USB 2.0 port (compatible with USB 1.0 devices)
• SD memory card slot
• Windows software for easy:
  1. • Configuration and diagnostics
  2. • Rapid data exchange to PC
  3. • Tabular analysis
  4. • Data export to other software programs
  5. • CSV data file export
  6. • Multiple international languages supported

 

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

 

Technical Specifications
Power Requirements 9.6 - 16 VDC, 7 mA standby current (telemetry system will require additional power)
Processor 16-bit TI MSP430, and two 16-bit dsPIC microprocessors
On-Board Data Storage FLASH storage, 2 Gigabytes internal plus removable 2 Gigabyte SD memory card
Logging Interval 1 minute to 24 hours
Real-Time Clock Accurate +/- 1 minute/month, leap year correction, temperature correction
Non-Volatile Memory
  • All setup parameters and clock, battery backup
  • 8 gigabytes of expandable data storage with external SD card
Message Size 6 - 340 bytes typical
Serial Port
  • One (1) RS-232
  • +/- 5 VDC levels, minimum
  • 1200 to 115200 baud*
  • USB 2.0
Analog to Digital (0-5 VDC)
  • 21-bit resolution
  • Input impedance: 10 K ohm (min)
Communications
  • One (1) RS-232
  • USB 2.0 (fully compatible with
  • USB 1.0 devices)
  • Removable SD card, 2 GB supplied
Watchdog Timer System resets upon microprocessor failure
Digital to Analog (0-5 Vdc) Output 12-bit resolution
Temperature and Humidity
  • Operating: -40 to 158 F (-40 to 70 C)
  • Optional NEMA 4 enclosure: 100%
  • condensing
  • Aluminum enclosure: 95%
  • non-condensing
Sensor Input Selections
4 Analog Channels - Single Ended
  • Input type: 2 wire, 4 - 20 mA
  • current loop, or 0 - 5 V with accessable DIP switch
  • Sensor power: 24 Vdc (under firmware control),
  • 12 Vdc and 5 Vdc (fixed)
  • Accuracy & Resolution: 0.01%
  • accuracy, 0.002% resolution
  • 21-bit analog single-ended
  • Input: Resolution is 0.5 parts per million
  • (discrete one for each channel)
  • Simultaneous Sampling
Pulse Count
  • Input type: pulse
  • Sensor power: 5 or 12 VDC continuous
  • Maximum rate: 60 pulses per minute
Serial
  • Input type: SDI-12
  • Sensor power: 5 VDC or 12 VDC continuous
One Switched Excitation Voltages: 24V/5W for 4-20mA sensor power
Physical Size (L x H x D) Black anodized aluminum housing
5.53 in x 3.06 in x 1.95 in
(14.05 cm x 7.77 cm x 4.96 cm)

 

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