SPECIFICATIONS DESCRIPTION圆盘纸、记录笔、记录纸 The instrument is the first circular chart recorder with the ability to record trend data and print alphanu-meric in four colors. It uses unique ring only charts and has the ability to zone and scale trend data. These capabilities not only provide the best trend data readability, but also instant association with the corresponding scales. Whether its basic application of recording inputs, to a demanding application requiring derived variables, logic functions, totalization, or other capabilities, the instrument can be supplied with the necessary level of sophistication, while maintaining an uncomplicated operator inter-face. MODELS(圆盘纸、记录笔、记录纸) The instrument is available in versions for trend recording of one to four values. The number of colors can equal the number of trended values, or all four colors can be provided. The latter option provides the greatest color flexibility and makes it easier to add trend capability to the instrument in the field. The instrument can have up to eight inputs, and inputs are not directly associated with trend pens. The instrument can trend any combination of inputs, averages, derived variables, logic states, even totals. A full compliment of options provides the flexibility to handle virtually any type of application.