CR800 Series Measurement and Control Systems - Data Loggers

CR800 Series Measurement and Control Systems - Data Loggers from Campbell Scientific Australia

By: Campbell Scientific Australia  09-Nov-2011
Keywords: 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. Features • 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 Model Descriptions 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. Storage Capacity* 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.

Keywords: Campbell Data Logger, Data Acquisition Systems, Data Loggers, Data Logging System, Environmental Monitoring Equipment, Event Recorders, Measuring and Controlling Devices, Monitoring Equipment,

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