Campbell Scientific CR6
Posted on 11 November 2015
 

CR6 Specifications

  • CPU: 32 bit with hardware FPU, running at 100 MHz
  • Internal Memory: 4 MB SRAM for data storage and optional removable microSD for up to 16 GB, 1 MB flash for program, 6 MB flash for OS
  • Micro SD Drive for extended data storage up to 16 GB
  • Clock Accuracy: ±3 min per year, optional GPS correction to 10 µs
  • USB micro B for direct connection to PC (limited power source during configuration), 2.0 full speed, 12 Mbps
  • 10/100 Ethernet RJ-45 for LAN connection
  • CS I/O port for connection to Campbell Scientific modems and displays
  • CPI port for terminal expansion using Campbell Distributed modules (CDM)
  • Battery terminal pair for regulated 12 V power input or rechargeable 12 V VRLA (valve-regulated, lead-acid) for UPS mode, 2.5 A @ 20°C
  • Charge terminal pair for 16 to 32 V from dc power converter or 12 or 24 V solar panel,
    1.2 A @ 20°C
  • Two switched 12 V terminals for powering sensors or communication devices, 1.1 A @ 20°C
  • Continuous 12 V terminal
  • Best Analog Accuracy: ±(0.04% of reading + 2 µV), 0° to 40°C
  • Best Effective Resolution: 50 nV (±200 mV range, differential measurement, input reversal, 5 Hz fN1)
  • Weight: 0.42 kg (0.92 lb)
  • Dimensions: 20.3 x 10.2 x 6.1 cm (8.0 x 4.0 x 2.4 in)
  • RoHS approved

Temperature Range

  • Standard: -40° to +70°C
  • Extended: -55° to +85°C

Twelve Universal (U) Terminals

U terminals are software configurable for analog or digital functions.

  • Analog functions consist of:
    • Analog inputs: 12 single-ended or 6 differential with ±5000 mV, ±1000 mV, ±200 mV ranges 24 bit ADC
    • Analog outputs: ±2.5 V or ±2.5 mA ranges for bridge measurements 12 bit DAC
    • Static frequency-analyzed vibrating wire: terminal pair both excites to 12 V p-p and 100 Hz to 6.5 kHz and reads vibrating-wire transducers using our patented spectral-analysis technology (VSPECT™)
    • Thermistor: completion resistor internal 5 kΩ
    • Period average: up to 200 kHz, amplitude dependent
    • Low level ac: 1 Hz to 20 kHz, amplitude dependent
  • Digital I/O functions consist of 5 V or 3.3 V logic levels for:
    • General status/control
    • Voltage source 5 V, 3.3 V, 20 mA @ 3.5 V
    • Timer I/O
    • Switch closure (150 Hz) or high frequency counter (1 MHz)
    • Pulse width modulation
    • Interrupts
    • SDI-12 and SDM
    • Serial asynchronous communication Tx/Rx pairs

Four control (C) Terminals

C terminals are software configurable for digital functions. Digital I/O functions consist of 5 or 3.3 V logic levels for:

  • General status/control
  • Voltage source 5 V, 3.3 V: 11 mA @ 3.5 V
  • Timer I/O
  • Switched closure (150 Hz) or high frequency counter (1 MHz)
  • Pulse width modulation
  • Interrupts
  • SDI-12 and SDM
  • RS-232/RS-485: half or full duplex, Tx/Rx pairs


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