Mô tả sản phẩm: Bộ lưu trữ và xử lý dữ liệu CR850 Datalogger Campbell Sientific
Benefits and Features
- Integrated keyboard and display screen let you program, manually initiate data transfers, and view data, all on site.
- Ideal applications include wind profiling, weather stations, ETo/agriculture, air quality, soil moisture, water level/stage, aquaculture, vehicle testing, Time Domain Reflectometry, SCADA, and water quality
- 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
- Includes both an CS I/O port and an RS-232 port for connecting communication devices
- Gas Discharge Tube (GDT) protected inputs
- Battery-backed SRAM and clock that ensure data, programs, and accurate time are maintained while datalogger is disconnected from the main power source
- Program with LoggerNet, PC400, or ShortCut to fit your setup.
Technical Description
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 datalogger program that can be initiated by a simple “toggle” or “pick list”. Its keyboard and display screen is used to program the datalogger, manually initiate data transfer, and display data.
The CR850 uses an external power supply. Low power consumption allows the it to operate for extended time periods on a battery recharged with a solar panel—eliminating the need for AC power. The CR850 suspends 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 datalogger. 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.
CR850 Specifications
- Maximum Scan Rate: 100 Hz
- Analog Inputs: 6 single-ended or 3 differential individually configured
- Pulse Counters: 1
- Switched Excitation Channels: 2 voltage
- Digital Ports1: 4 I/Os or 2 RS-232 COM2
- Communications Ports: 1 CS I/O, 1 RS-232
- Switched 12 Volt: 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
(9.5" x 4.1" x 2") - Weight: 0.7 kg (1.5 lb)
- Protocols Supported: PakBus, Modbus, DNP3, FTP, HTTP, XML, POP3, SMTP, Telnet, NTCIP, NTP, SDI-12, SDM
- CE Compliance Standards to which Conformity is Declared: IEC61326:2002
- Warranty: 3 years
Temperature Range
- Standard: -25° to +50°C
- Extended: -30° to +80°C
Memory
- Operating System: 2 MB Flash
- CPU Usage, Program Storage, and Data Storage: 4 MB
Current Drain
- 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
