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双声道超聲波流量計

QTLS系列多声道超聲波流量計采用美国PhoTime技术的双道超声波流量测量产品克服了单声道超聲波流量計不适应流场变化精度不高流量不稳定的缺点，测量原理仍然基于延时法测量由于使用两个声道的优化设计，此款超聲波流量計很大程度上克服了紊流随机性对测量的影响，大幅度提高了对不同工况测量的适应性和測量精度，使用超聲波流量計测量小流量更有保证。可以作为定量控制的计量标准。

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15890954071

産品簡介 / Introduction

QTLS系列多声道超聲波流量計是通过检测流体流动对超声波束的作用以测量流体流速的信息的装置，根据对信号的检测方式，可分为传播速度差法、多普勒法、波束偏移法、噪声法及相关法。多普勒法是利用声学多普勒原理，通过测量不均匀流体中散射体散射的超声波多普勒频移来确定流体流量的，适用于含悬浮颗粒、气泡等流体流量测量。波束偏移法是利用超声波束在流体中的传播方向随流体流速变化而产生偏移来反映流体流速的，低流速时，靈敏度很低适用性不大。目前应用广泛的是“时差法”测量原理。结合多脉冲技术、数字信息处理技术以及信号处理电路将测量数据进行实时显示。 “时差法”是通过发送传感器产生出超声波信号并将其散发于空气流中，信号通过管壁、流体到接收传感器上，同时，接收传感器发散同样的超声波信号，信号经过管壁、流体到发送传感器上。此时，因为流速的存在使得时间差值，可根据时间差算出流速，进而算出流量。

産品優點 / Product advantages

1、同时支持单声道与双声道，并且当一个声道异常或者不接时，可以依据信号质量，自动切换为单声道运行；

2、采用最新32位Cortex-M4内核CPU作为处理器核心，使用64位浮点运算，计算不丢失精度；

3、采用高速ADC对超声波信号进行采集，具有超声波波形还原与重构技术；采用精度时间测量芯片，超声波飞行时间精度可达22皮秒；

4、单板、全贴片工艺，全部使用SMT机器焊接,大大降低了电路板虚焊、漏焊、短路等问题。

5、熱量功能：選配PT100外夾式鉑電阻可實現熱量計量。

技術參數 / Technical parameters

介質	絕大多數單相液體，少于5%顆粒或汽泡
管道材質	不鏽鋼、PVC、碳鋼
環境溫度	-40℃～+60℃
流體溫度	-20℃～+120℃
防爆等級	隔爆型Exd II BT4
流速範圍	标称精度流速範圍0.1～12.5m/s
測量精度	±0.5%
靈敏度	0.001m/s
測量重複性	±0.2%
防護等級	IP65
電源	12V～24VDC，0.5A
電氣接口	防水頭2M201.5
LCD顯示	128*64點陣液晶
串行通訊	RS485,MODBUS RTU协议

産品如何選型 / How to select productss

管道壁厚、外径，介質

管內流量是否含有雜質

测量介質的温度

测量介質为气体时

氣體壓力

合理配置選型

應用領域 / Application field

應用于：醫療/衛生，環保/水工業，食品/飲料，化學品檢測，石油/化工。

一台滿足各類行業流量測量

石油

化工

水工業

食品

醫療

化學品檢測

安裝注意事項 / Installation precautions

1、觀察安裝現場管道是否滿足直管段前10D後5D以及離泵30D的距離。(D爲管道內直徑)
2、确认管道内流体介質以及是否满管。
3、确认管道材質以及壁厚(充分考虑到管道内壁结垢厚度)
4、確認管道使用年限，在使用10左右的管道，即使是碳鋼材質，建議也采用插入式安裝。
5、前四步驟完成後可確認使用何種傳感器安裝
6、開始向表體輸入參數以確定安裝距離。
7、非常重要：精確測量出安裝距離。

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 裝配
02 標定
03 出廠檢驗
04 包裝
05 發貨

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

出厂前一对一標定

3毫米-3米 MT质量法水流量標定装置

DN800mm-DN2200mm容積法實流檢定裝置

DN3-DN15mm质量法標定装置

DN65mm-DN300mm 多台串联质量法实流標定装置

熱品推薦 / Hot product

: (扣即测)夹持式超聲波流量計

超聲波流量計采用新型外夹设计，可在不接触测量介質的情况下获得流量。由于夹持式流量计的优点，无需切断管道或长时间停止设备，节省了时间成本和人工成本。超聲波流量計安裝和操作简单、快捷，可以实现流量和能量的监测。

: 双声道超聲波流量計

QTLS系列多声道超聲波流量計采用美国PhoTime技术的双道超声波流量测量产品克服了单声道超聲波流量計不适应流场变化精度不高流量不稳定的缺点，测量原理仍然基于延时法测量由于使用两个声道的优化设计，此款超聲波流量計很大程度上克服了紊流随机性对测量的影响，大幅度提高了对不同工况测量的适应性和測量精度，使用超聲波流量計测量小流量更有保证。可以作为定量控制的计量标准。

: 便携式超聲波流量計

QTDS超聲波流量計是一种非接触式仪表，它既可以测量大管径的介質流量也可以用于不易接触和观察的介質的测量。具有操作简单、測量精度高、一致性好、可在线打印、电池供电时间长等特点。几乎不受被测介質的各种参数的干扰，尤其可以解决其它仪表不能的强腐蚀性、非导电性、放射性及易燃易爆介質的流量测量问题。

: 手持式超聲波流量計

手持式超聲波流量計小巧、轻便，可随时随地进行流量测量，可充电电池及通用型電源的设计使您摆脱了電源限制。它采用了时差式原理和先进的数字相关技术以及智能自适应声波技术，使它的测量稳定性更加突出。同时它采用了声聚焦专有技术，使它在连续测量时的信号接收与品质上得到显著增强。

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‘Are you going home?’ asked the other. ‘My wife, I know, is calling on Lady Keeling, and she will pick me up there. If she has not been so fortunate as to find Lady Keeling in, she will wait for me in the motor. May we not walk down there together?’ ‘My dear,’ he said, ‘I am so glad you have let me come to you. You are in deep waters, poor girl.’ I saw two. "Yes," he said, dismounting and motioning me to do the same. Kendall took our bridles. 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. 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