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概覽
CR850數(shù)據(jù)采集器是小型的研究級(jí)精度的數(shù)據(jù)采集器，作為一體式套裝的一部分，含有內(nèi)置的鍵盤顯示器。傾向支持只測量少數(shù)幾個(gè)傳感器的小型應(yīng)用。每個(gè)CR850讀取傳感器的讀數(shù)，再通過通訊外設(shè)傳送數(shù)據(jù)；可兼容大多數(shù)傳感器和通訊設(shè)備。多個(gè)CR850可以被設(shè)置成數(shù)據(jù)采集器網(wǎng)絡(luò)；或者，眾多CR850單元也可被逐個(gè)配置。CR850結(jié)實(shí)耐用，可在嚴(yán)酷的遠(yuǎn)程環(huán)境中獨(dú)立工作。
優(yōu)勢與特點(diǎn)
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 clock that ensures accurate time is maintained while data logger is disconnected from battery power
Program with LoggerNet, PC400, or Short Cut to fit your setup
技術(shù)說明
CR850包含封裝在塑料殼內(nèi)的帶一體式接線面板的測量控制模塊、16鍵的鍵盤、以及可顯示8行21字符數(shù)值顯示（或64x128像素繪圖）的LCD顯示屏。支持自定義菜單，方便用戶通過簡單切換或選取列表，來初始化數(shù)據(jù)采集器程序的選項(xiàng)設(shè)置功能。一體式的鍵盤和顯示器用于啟動(dòng)數(shù)據(jù)采集器工作程序，初始化數(shù)據(jù)傳輸，顯示數(shù)據(jù)。
CR850使用外部的鍵盤顯示器和供電電源，極低的功耗使得CR850只需要使用小容量的可充電電池和太陽能板組合供電，從而不需要交流電源。為了減小非精確測量的可能性，當(dāng)主電源低于 9.6 V時(shí)，CR850會(huì)暫停工作。
內(nèi)部的操作系統(tǒng)包括數(shù)據(jù)采集器編程所需的測量、處理、輸出指令。編程語言為CRBasic，使用類BASIC語法。測量指令包括：電橋設(shè)置、電壓輸出、熱電偶、脈沖/頻率信號(hào)。處理指令包括：代數(shù)運(yùn)算、統(tǒng)計(jì)及用于現(xiàn)場處理的超越函數(shù)。輸出指令按時(shí)間段處理數(shù)據(jù)，或控制外部設(shè)備。
