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潜水型電磁流量計

QTLD/Q型潜水电磁流量传感器和L-mag型电磁流量转换器配套组成，用于连续测量明渠、暗渠或管道中各种导电液体或液固两相介质的体积流量。全塑结构密封可靠，无活动部件，无阻力件，耐腐蚀，结构简单，工作可靠。

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15890954071

産品簡介 / Introduction

潜水电磁流量传感器和L-mag型电磁流量转换器配套组成，用于连续测量明渠、暗渠或管道中各种导电液体或液固两相介质的体积流量。测量精度不受被測介質溫度、压力、粘度、密度 (包括液固比）等物理参数变化的影响，只要被测介质电导率大于20μS/cm，仪表测量不受电导率变化的影响。
适用于明渠、暗渠、河道测量。适用于圆形、矩形、梯形和其它形状的渠道。测量不受河水上涨，潮汐，下游水位等变化的影响。对上下游直渠段要求低，安裝要求低，能在原有渠道上稍加改造即可。施工周期短，安裝施工费用低。

工作原理 / Working principle

根據法拉第電磁感應原理，在與測量管軸線和磁力線相垂直的管壁上安裝了一對檢測電極，當導電液體沿測量管軸線運動時，導電液體切割磁力線産生感應電勢，此感應電勢由兩個檢測電極檢出，數值大小與流量成正比例，其值爲：
E=KBVD

式中：
E－感應電勢；
K－與磁場分布及軸向長度有關的系數；
B－磁感應強度；
V－導電液體平均流速；
D－電極間距；（測量管內直徑）

傳感器將感應電勢E作爲流量信號，傳送到轉換器，經放大，變換濾波用一系列的數字處理後，用帶背光的點陣式液晶顯示瞬時流量和累積流量。轉換器有4～20mA輸出，報警輸出及頻率輸出，並設有RS－485等通訊接口，並支持HART和MODBUS協議。

産品優點 / Product advantages

1、潜水型電磁流量計结构简单，无可动部件，具有很强的抗污、抗堵或抗腐蚀能力，因此可在含有悬浮物或粘结物的流体中使用；
2、潜水型電磁流量計测量覆盖范围广，正常适用范围20∶1,一般30∶1或更大；
3、流量計爲雙向測量系統，內裝三個積算器：正向總量、反向總量及差值總量；
可顯示．莊、反流量，並具有多種輸出：電流、脈沖、數字通訊、HART。
4、轉換器采用表面安裝技術(SMT)，具有自檢和自診斷功能。
5、測量不受流體密度、粘度、溫度、壓力和電導率變化的影響。

技術參數 / Technical parameters

性能	技術參數
公稱通徑	50，100，200，400，600，800(mm)
精度	±1.5%，±2.5%(與仿真傳感器合用時）
襯裏材料	氯丁橡膠
電極材料	含钼不鏽鋼、钛、哈氏合金C、特殊
電極形式	標准型
連接方式	法蘭連接
被測介質溫度		0～+40℃





公稱壓力	0.6、1.0、1.6
供電電源	AC220V、DC24V、12V

環境濕度	5～100%RH（相對濕度）
介質導電率	≥20μs/cm
測量範圍	1500：1 流速设定<15m/s
結構形式	分體型,沈浸
防護等極	IP68可選
防爆標志	ExmdIIT 4
産品標准	JB/T9248-2015電磁流量計

産品如何選型 / How to select productss

測量介質、溫度，是否有腐蝕性

流量範圍和用戶管道的內徑

壓力等級

是否現場顯示

工作電源

信號輸出、通訊

是否要防爆

安裝方式

精度等級

應用領域 / Application field

電磁流量計应用于：石油、化工、鋼鐵、食品、電力、造紙、冶金、给排水、石化、医疗等行业。

一台滿足各類行業流量測量

石油

化工

鋼鐵

食品

電力

造紙

安裝注意事項 / Installation precautions

1、無振動、無強電磁場的地方（如大電機、變頻器附近）；
2、盡量垂直安裝，水平安裝需要安裝在低處，不能安裝管道頂點，保證滿管，防止氣泡；
3、直管段要求，最好保證前10倍後5倍管徑；
4、焊接式的安裝時候要注意不要連接儀器焊接，防止傷害流量計；
5、外殼盡量接地，屏蔽線單端接地，接到點不能與強電共地；
6、如果爲了維修簡便，安裝位置需要選好，滿足維修要求。同時，可以安裝旁管，故障時候流體走旁管；
7、避免陽光直射、高溫的地方，做好防水、防潮處理；
8、其他應該考慮的要求，信號走線不要跟強電線路一起。

我們能提供的服務 / The services we can provide

根據需求
推薦選型及報價
一
産品個性化
定制
二
7*24小時
全國服務熱線
三
上門指導
安裝
四

生産過程 / The services we can provide

01 法蘭、不鏽鋼管
進廠檢驗
02 導管加工
(下料、焊接)
03 檢驗
04 導管襯裏
05 檢驗
06 電極、線圈
加工及裝配
07 檢驗
08 外殼組件焊接
09 檢驗
10 噴漆
11 檢驗
12 轉換器/
接線盒組裝
13 檢驗
14 實流標定
15 出厂檢驗
16 包裝
17 入成品庫
18 發貨

青天儀表檢定裝置 / Qingtian instrument verification device

出廠前一對一標定

3毫米-3米 MT质量法水流量标定装置

DN800mm-DN2200mm容積法實流檢定裝置

DN3-DN15mm質量法標定裝置

DN65mm-DN300mm 多台串联质量法實流標定装置

熱品推薦 / Hot product

: QTLD法兰式電磁流量計

★测量管内无可动部件，便于维护管理；无阻流部件，因此无压力损失。★被测液体电导率≥5μs/cm，配合各种襯裏材料，可适用于测量各种酸、碱、盐溶液及泥浆、矿浆、纸浆等介质的流量。★流量的测量不受流体的密度、粘度、温度、压力和电导率变化的影响，传感器感应电压信号与平均流速呈线性关系，测量精度高。★合理选用衬里及電極材料，可实现良好的耐腐蚀性和耐磨性。★低频矩形波激磁，不受工频及现场各种杂散干扰的影响，工作稳定可靠。★不受流体方向影响，正反向均可准确计量。★量程比1：120(0.1m/s～12m/s)，满量程流速范围宽。★汉字液晶背光显示，可在线修改参数，操作简单方便。★具有空管测量、报警功能，并能适应不同的流体介质。★掉电时间记录功能，自动记录仪表系统电源间断时间，补算漏计流量。★小时总量记录功能，以小时为单位记录流量总量，适用于分时计量制。

: 插入式電磁流量計

★测量精确度不受液体密度、粘度、温度、压力和电导率变化的影响；★高可靠性的外插安裝方式，传感器的安裝、维护无需拆卸测量管，因此较适合于无法停水的现场使用，而且可以在老管道上现场开口安裝；★结构简单，電磁流量計测量管可不用内衬，可靠性高；公稱通徑范围宽，适用于DN100-DN3000之间的所有口径管道；★一体化接地电极，实现仪表良好接地；传感器采用新的加工工艺、固态封装、耐振动、防渗透、寿命长，使仪表具有良好的测量精确度和稳定性。

: QTLD分体式電磁流量計

★测量管内无可动部件，便于维护管理；无阻流部件，因此无压力损失。★被测液体最低电导率≥5μs/cm，配合各种襯裏材料，可适用于测量各种酸、碱、盐溶液及泥浆、矿浆、纸浆等介质的流量。★流量的测量不受流体的密度、粘度、温度、压力和电导率变化的影响，传感器感应电压信号与平均流速呈线性关系，测量精度高。★合理选用衬里及電極材料，可实现良好的耐腐蚀性和耐磨性。★低频矩形波激磁，不受工频及现场各种杂散干扰的影响，工作稳定可靠。★不受流体方向影响，正反向均可准确计量。★量程比1：120(0.1m/s～12m/s)，满量程流速范围宽。★汉字液晶背光显示，可在线修改参数，操作简单方便。★具有空管测量、报警功能，并能适应不同的流体介质。★掉电时间记录功能，自动记录仪表系统电源间断时间，补算漏计流量。★小时总量记录功能，以小时为单位记录流量总量，适用于分时计量制。

: 電磁明渠流量計

電磁明渠流量計采用流速面积法，不需修建量水建筑物，通过测量过水断面面积与断面流速来求得流量，广泛应用于明渠引水、水利工程、城市供水、污水处理、农田灌溉等矩形、梯形明渠及涵洞的流量测量。

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Leaving him with the animals we went over the fence, through the cotton, across the road at a point terribly near the lighted and guarded shop, and on down the field of corn, to and over its farthest fence; stooping, gliding, halting, crouching, in the cotton-rows and corn-rows; taking every posture two upright gentlemen would rather not take; while nevertheless I swelled with pride, to be alone at the side--or even at the heels--of one who, for all this apparent skulking and grovelling, and in despite of all the hidden drawings of his passion for a fair woman at this hour somewhere in peril, kept his straight course in lion-hearted pursuit of his duty (as he saw it) to a whole world of loves and lovers, martyrs and fighters, hosts of whom had as good a right to their heart's desire as I to mine or he to his; and I remembered Charlotte Oliver saying, on her knees, "I believe no beauty and no joy can be perfect apart from a love that loves the whole world's joy better than any separate joy of any separate soul." That Plato put forward the ethical theory of the Protagoras in perfect good faith cannot, we think, be doubted; although in other writings he has repudiated hedonism with contemptuous aversion; and it seems equally evident that this was his earliest contribution to positive thought. Of all his theories it is the simplest and most Socratic; for Socrates, in endeavouring to reclaim the foolish or vicious, often spoke as if self-interest was the paramount principle of human nature; although, had his assumption been formulated as an abstract proposition, he too might have shrunk from it with something of the uneasiness attributed to Protagoras. And from internal evidence of another description we have reason to think that the Dialogue in question is a comparatively juvenile production, remembering always that the period of youth was much more189 protracted among the Greeks than among ourselves. One almost seems to recognise the hand of a boy just out of college, who delights in drawing caricatures of his teachers; and who, while he looks down on classical scholarship in comparison with more living and practical topics, is not sorry to show that he can discuss a difficult passage from Simonides better than the professors themselves. Nor is this all. After sharply distinguishing what is from what is not, and refusing to admit any intermediary between them, Aristotle proceeds to discover such an intermediary in the shape of what he calls Accidental Predication.236 An accident is an attribute not necessarily or usually inhering in its subject—in other words, a co-existence not dependent on causation. Aristotle could never distinguish between the two notions of cause and kind, nor yet between interferences with the action of some particular cause and exceptions to the law of causation in general; and so he could not frame an intelligible theory of chance. 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潜水型電磁流量計

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