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Campbell Scientific CR800 & CR850 Dataloggere

Campbell Scientific CR800 og CR850 dataloggere er mindre, programmerbare dataloggere som er konstruert for frittstående bruk i ekstreme, avsidesliggende lokaliteter. De er beregnet for mindre konfigurasjoner der færre sensorer skal benyttes. CR850 ligner på CR800, men har integrert tastatur og skjerm for enklere konfigurasjon i felt.

  • Ideell for bruksområder som inkluderer værstasjoner, SAAF, jordfuktighet, vannstand, vannkvalitet mm.
  • Bredt spekter av støttede kommunikasjonsprotokoller inkludert PakBus, Modbus, SDI-12 og DNP3
  • Fleksible strøm- og kommunikasjonsmuligheter gjør den ideell for avsidesliggende steder

Description

Overview

The CR800 is a smaller, research-grade data logger designed for stand-alone operation in harsh, remote environments. It is intended for smaller configurations in which fewer sensors will be measured. Each CR800 reads input from sensors, then transmits the data via a communication peripheral; most sensors and telecommunication devices are compatible. Multiple CR800s can be configured as a network or units can be deployed individually.

Another data logger, the CR850, is similar to the CR800, but it has an integrated keyboard and display screen for on-site control.

Technical Description

The CR800 consists of measurement electronics encased in a plastic shell and an integrated wiring panel. This data logger uses an external keyboard/display and power supply.

The CR850 consists of measurement electronics encased in a plastic shell with an integrated wiring panel, 16- character keyboard, and display screen. The display can show 8 lines x 21 characters (64 x 128 pixels). Custom menus are supported allowing customers to set up choices within the data logger program that can be initiated by a simple “toggle” or “pick list”. Its keyboard and display screen is used to program the data logger, manually initiate data transfer, and display data.

Low power consumption allows the CR800 and CR850 to operate for extended periods on a battery recharged with a solar panel&mdasheliminating the need for AC power. These data loggers suspend execution when primary power drops below 9,6 V, reducing the possibility of inaccurate measurements.

The on-board operating system includes measurement, processing, and output instructions for programming the data logger. The programming language, CRBasic, uses a BASIC-like syntax. Measurement instructions specific to bridge configurations, voltage outputs, thermocouples, and pulse/frequency signals are included. Processing instructions support algebraic, statistical, and transcendental functions for on-site processing. Output instructions process data over time and control external devices.

  • Ideal for applications including wind profiling, weather stations, air quality, ETo/agriculture, soil moisture, water level/stage, aquaculture, avalanche forecasting, time-domain reflectometry, vehicle testing, SCADA and water quality
  • Integrated keyboard and display screen let you program, manually initiate data transfers and view data, all while on site (CR850 only)
  • Simpler in design, the CR800 and CR850 are easier to program and wire
  • Serial communications with serial sensors and devices supported via I/O port pairs
  • Contains custom ASIC chip that expands pulse count, control port and serial communications capabilities
  • Supports PakBus, Modbus, SDI-12 and DNP3 protocols
  • Compatible with channel expansion peripherals allowing you to expand your system
  • Program with LoggerNet, PC400, or Short Cut to fit your setup
  • Includes both a CS I/O port and an RS-232 port for connecting communication devices
  • Gas Discharge Tube (GDT) protected inputs
  • Battery-backed clock that ensures accurate time is maintained while data logger is disconnected from battery power

  • Maximum scan rate: 100 Hz
  • Analog inputs: 6 single-ended or 3 differential individually configured
  • Pulse counters: 2
  • Switched excitation channels: 2 voltage
  • Digital ports: 4 I/Os or 2 RS-232 COM
  • Communications/data storage ports: 1 CS I/O, 1 RS-232
  • Switched 12V: 1
  • Input voltage range: ±5 VDC
  • Analog voltage accuracy: ±(0,06% of reading + offset), 0 to 40°C
  • Analog resolution: 0,33 µV
  • A/D bits: 13
  • Power requirements: 9,6 to 16 VDC
  • Dimensions: 24,1 x 10,4 x 5,1 cm
  • Weight: 0,7 kg
  • Protocols supported: PakBus, Modbus, DNP3, FTP, HTTP, XML, POP3, SMTP, Telnet, NTCIP, NTP, SDI-12, SDM
  • CE compliance: IEC61326:2002
  • Warranty: 3 years
  • Temperature range:
    • Standard: -25 to +50°C
    • Extended: -55 to +85°C
  • Memory:
    • Operating system: 2 MB flash
    • CPU usage, program storage and data storage: 4 MB
  • Typical current drain @ 12 VDC:
    • Sleep mode: 0,7 mA typical; 0,9 mA max
    • Active (w/o RS-232 communication): 1 to 16 mA typical
    • Active (w/ RS-232 communication): 17 to 28 mA typical

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