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産品概述
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技術文檔

PTP-900-04 单晶硅压差变送器

産品概述

PTP-900-04 单晶硅压差变送器用于测量液体、氣體或蒸汽的液位、密度、壓力，然后将其转变成4-20mA HART电流信號輸出，也可与BST9900、HART375或BST Modem相互通信，通过他们进行参数设定、过程控制。

産品特點

采用进口单晶硅传感器较之传统的金属电容壓力/差压变送器精度、稳定度、抗干扰能力有大幅度的提高。OLED点阵显示器、视角广、画质均匀、工作溫度宽。

應用範圍

産品主要用于火力發電、核電、石油冶煉、化工、鋼鐵、造紙、制藥、食品、水泥制造等領域。

技術參數

精度	±0.1％ URL ±0.2％ URL? ? ? ??
信號輸出	4-20mA或4-20mA叠加HART? ?
供電電壓	24VDC（12VDC-45VDC）
介质溫度	-40-+100℃
穩定性	六个月 ±0.1％ URL
環境濕度	0-100％相對濕度
整机工作溫度	-40-85℃（不帶液晶表頭）-30-60℃（不帶液晶表頭）
储存溫度	-40-+100℃（不带液晶表头）-40-+70℃ （带液晶表头）
溫度影响	±（0.2％URL+0.18％檢驗量程）/56℃
負載影響	没有負載影響，除非电源电压有变化
EMI/RFI影響	由20至1000MHz，場強達致30V/M時，輸出漂移小于±0.1％量程
電源影響	小于输出量程的0.0059％/V ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
穩定性	六个月 ±0.1％ URL
振動影響	在任意轴向上200HZ下振動影響为±0.05％URL/g
振動影響	在任意轴向上200HZ下振動影響为±0.05％URL/g
安裝位置影響	零點漂移最大爲±0.25KPa。所有的零點漂移都可以校正；對量程無影響。
零點正、負遷移	零點負遷移時，量程下限必須大于或等于－URL零點正遷移時，量程上下限必須小于或等于﹢URL。校驗量程必須大于或等于最小量程。
零點與過壓極限	变送器任意一侧加0至13.79MPa壓力不会引起损坏。在3.45KPa至13.79MPa的静压范围工作时符合性能规格要求。
測量量程	測量量程1：0-1.3-7.5KPa? 測量量程2：0-6.2-37.4KPa? 測量量程3：0-31-186.8KPa?
測量量程4	0-117-690KPa? ?測量量程5：0-345-2068KPa
阻尼時間常數	時間常數可調，以0.1秒遞增，由最小至16.0秒。

外觀圖

技術文檔

PDF单晶硅压差变送器产品文档下載
PDF单晶硅压差变送器说明文档下載

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"Why, young lady, it's hard to doubt anything you say, but really that sounds rather fanciful. Why should you think it?" He made a motion of pain--"Don't say it!" and we read in each other's eyes the one conviction that from a surgeon's personal knowledge this man had written to warn Charlotte that Oliver was alive. "1. That it is prohibited to be out of doors after seven o'clock (Belgian time) in the evening. "Ah well, be you a Fleming?" In returning to one of the older cosmologies, the Stoics placed themselves in opposition to the system of Aristotle as a whole, although on questions of detail they frequently adopted his conclusions. The object of Heracleitus, as against the Pythagoreans, had been to dissolve away every antithesis in a pervading unity of contradictories; and, as against the Eleatics, to substitute an eternal series of transformations for the changeless unity of absolute existence. The Stoics now applied the same method on a scale proportionate to the subsequent development of thought. Aristotle had carefully distinguished God from the world, even to the extent of isolating him from all share in its creation and interest in its affairs. The Stoics declared that God and the world were one. So far, it is allowable to call them pantheists. Yet their pantheism was very different from what we are accustomed to denote by that name; from the system of Spinoza, for example. Their strong faith in final causes and in Providence—a faith in which they closely followed Socrates—would be hardly consistent with anything but the ascription of a distinct and individual consciousness to the Supreme Being, which is just what modern pantheists refuse to admit. Their God was sometimes described as the soul of the world, the fiery element surrounding and penetrating every other kind of matter. What remained was the body of God; but it was a body which he had originally created out of his own substance, and would, in the fulness of time, absorb into that substance again.25 Thus they kept the future conflagration foretold by Heracleitus, but gave it a more religious colouring. The process of creation was then to begin over again, and all things were to run the same12 course as before down to the minutest particulars, human history repeating itself, and the same persons returning to live the same lives once more.26 Such a belief evidently involved the most rigid fatalism: and here again their doctrine offers a pointed contrast to that of Aristotle. The Stagirite, differing, as it would seem, in this respect from all the older physicists, maintained that there was an element of chance and spontaneity in the sublunary sphere; and without going very deeply into the mechanism of motives or the theory of moral responsibility, he had claimed a similar indeterminateness for the human will. Stoicism would hear of neither; with it, as with modern science, the chain of causation is unbroken from first to last, and extends to all phenomena alike. The old theological notion of an omnipotent divine will, or of a destiny superior even to that will, was at once confirmed and continued by the new theory of natural law; just as the predestination of the Reformers reappeared in the metaphysical rationalism of Spinoza.27 417 Jeff got his engine going by setting it on a compression point when he had primed the cylinders and using his booster magneto to furnish the hot sparks that gave it its first impulse. Taking this view of his Continental neighbours, George was driven to the conclusion that his only safety lay in firmly engaging France to relinquish the Pretender. The means of the attainment of this desirable object lay in the peculiar position of the Regent, who was intent on his personal aims. So long as the chances of the Pretender appeared tolerable, the Regent had avoided the overtures on this subject; but the failure of the expedition to the Highlands had inclined him to give up the Pretender, and he now sent the Abbé Dubois to Hanover to treat upon the subject. He was willing also to destroy the works at Mardyk as the price of peace with England. The preliminaries were concluded, and the Dutch included in them; but the Treaty was not ratified till January, 1717. "Jest as I expected, Si," Shorty called back to him. "The rebels have throwed back a squad to watch for us." The crest of Boarzell was just visible against the luminous sky. There was something sinister and challenging about those firs. The gorse round their trunks seemed in that strange half-stormy, half-peaceful night to throw off a faint glimmer of gold. The fiddle wept and sang into the darkness, and outside the window two cherry trees scraped their boughs together. "Well, I d?an't know where he is." Chapter 8 HoME 天天啪夜夜射2018视频 ENTER NUMBET 009www.gaojing.org.cn
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