CR800 Series Measurement and Control Systems - Data Loggers
Campbell Scientific Australia
Monitoring Equipment, Data Loggers, Data Acquisition Systems
The CR800 and CR850 data loggers provide precision measurement capabilities in a rugged, battery-operated package. Both models consist of measurement electronics encased in a plastic shell and an integrated wiring panel. The standard operating range is -25° to +50°C. An extended range of -55° to +85°C for the CR800 or -30°to +80°C for the CR850 is also available.
• 4 Mbytes* of battery-backed SRAM
• Program execution rate of up to 100 Hz
• CS I/O and RS-232 serial ports
• 13-bit analog to digital conversions
• 16-bit microcontroller with 32-bit internal CPU architecture
• Temperature compensated real-time clock
• Background system calibration for accurate measurements over time and temperature changes
• Single DAC used for excitation and measurements to give ratiometric measurements
• Gas Discharge Tube (GDT) protected inputs
• Data values stored in tables with a time stamp and record number
• Battery-backed SRAM and clock that ensure data, programs, and accurate time are maintained while a CR800-series datalogger is disconnected from the main power source
• One program-status LED
• Serial communications with serial sensors and devices supported via I/O port pairs
• PakBus, Modbus, and DNP3 protocols supported
The models diff er in their keyboard display. The CR800 uses an external keyboard display, the CR1000KD, which connects to the CR800 via its CS I/O port. Th e CR850 includes an on-board keyboard display as part of its integrated package.
Operating System/Logic Control
The on-board operating system includes measurement, processing, and output instructions for programming the datalogger. Th e programming language, CRBasic, uses a BASIC-like syntax. Measurement instructions specifi c to bridge confi gurations, 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.
The CR800 series has 2 MB of fl ash memory for the Operating System, and 4 MB of battery-backed SRAM for CPU usage, program storage, and data storage. Data is stored in a table format.
Campbell Data Logger
, Data Acquisition Systems
, Data Loggers
, Data Logging System
, Environmental Monitoring Equipment
, Event Recorders
, Measuring and Controlling Devices
, Monitoring Equipment