<*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">【![](http://img0.dyq.cn/file/upload/201508/04/75278d84cc5258a056acf8b05a01992e.jpg)
![](http://img0.dyq.cn/file/upload/201508/04/1e7acbae7df4fb9c411d91a910cb13a8.jpg)
![](http://img0.dyq.cn/file/upload/201508/04/4d0177e7892ed12ffed85fc4b6515ff5.jpg)
![](http://img0.dyq.cn/file/upload/201508/04/9fedef92c8115bcb431edaa5cecebde2.jpg)
*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;"><*n>*n>*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">】*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">概述<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>涡街流量计是一种用途****广泛的流量仪表,几乎可以用在所有气体,液体和蒸汽的流量计测量和控制,罗斯蒙特公司研制开发具有国际****水平的新一代*n><*n>HTLJ*n><*n>系列数字智能涡街流量计,它突破了传统模拟方式处理涡街信号的局限,通过现代数字信号处理的方法对涡街探头信号进行识别、筛选,从而得到正常的流量信号,****大的****涡街的*震性能,从根本上解决了围绕涡街几十年来不*震问题,它广泛应用于石油化工、轻工、热电、造纸等行业的给水、给盐、给风的流量。*n><*n>
*n>*n>
<*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">【进口*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">HTLJ<*n>系列涡街流量计*n>*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">】*n><*n style="font-family:宋体;font-size:10.5pt;">功能特点<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">1*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>对探头信号能够进行智能识别和筛选,*震性能高。*n><*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">2*n><*n style="font-family:宋体;font-size:10.5pt;">可使用多点线性能修正、测量范围更宽,精度更高。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">3*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>无需信号切除,准确可靠的测量信息。*n><*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">4*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>调试操作简便,接线简单,两线制、三线制一体。*n><*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">5*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>检测元件不接触流体,可靠性能高,适应介质性强。*n><*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">6*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>无可动部件,*损,结构简单,牢固。*n><*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">7*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>可根据用户的*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">2*n><*n style="font-family:宋体;font-size:10.5pt;">次要求进行温度双补偿或温度单补偿,实现远传补偿或就地显示管理。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">8*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>信号输出:脉冲输出,电流输出。*n><*n> *n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">
*n>
<*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">【进口*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">HTLJ<*n>系列涡街流量计*n>*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">】*n><*n style="font-family:宋体;font-size:10.5pt;">工作原理<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">当介质以一定速度流过三角柱体时,在三角柱体两侧后面产生一个交替排列的旋涡带,称之为“卡门旋涡”,由于旋涡发生体两侧交替产生旋涡,于是在发生体两侧产生压力脉动,从而使检测体产生交变应力,封装在检测探头体内的压电元件在交变应力的作用下,产生与旋涡同频率的交变电荷信号,放大器将这种电荷信号进行放大、滤波、*,****后输出与介质流速成正比的脉冲信号,送至积算仪进行处理和显示。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">在一定雷诺数范围内*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">(2*n><*n style="font-family:宋体;font-size:10.5pt;">×*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">104 *n><*n style="font-family:宋体;font-size:10.5pt;">~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">7*n><*n style="font-family:宋体;font-size:10.5pt;">×*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">106)*n><*n style="font-family:宋体;font-size:10.5pt;">旋涡的释放频率*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">f*n><*n style="font-family:宋体;font-size:10.5pt;">与流体流速*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">v*n><*n style="font-family:宋体;font-size:10.5pt;">及旋涡发生体的迎流面宽度*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">d*n><*n style="font-family:宋体;font-size:10.5pt;">之间关系,可用下式表示*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:f=Sr*n><*n style="font-family:宋体;font-size:10.5pt;">·*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">V/ d*n><*n style="font-family:宋体;font-size:10.5pt;">,式中*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">f-*n><*n style="font-family:宋体;font-size:10.5pt;">卡门旋涡的释放频率*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;Sr-*n><*n style="font-family:宋体;font-size:10.5pt;">系数*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">(*n><*n style="font-family:宋体;font-size:10.5pt;">称为斯特劳哈尔数*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">)*n><*n style="font-family:宋体;font-size:10.5pt;">,*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">V-*n><*n style="font-family:宋体;font-size:10.5pt;">流速,*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">d-*n><*n style="font-family:宋体;font-size:10.5pt;">三角柱体的宽度。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">斯特劳哈尔数是旋涡流量计的重要系数。在曲线的*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">Sr*n><*n style="font-family:宋体;font-size:10.5pt;">≈*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">0.16*n><*n style="font-family:宋体;font-size:10.5pt;">的平直部分,所以只要准确测出频率*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">f,*n><*n style="font-family:宋体;font-size:10.5pt;">就可以测出流体流速*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">v=f*n><*n style="font-family:宋体;font-size:10.5pt;">·*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">d/Sr*n><*n style="font-family:宋体;font-size:10.5pt;">,从而达到测量管道内流体流量的目的,即*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:Q=3.6*n><*n style="font-family:宋体;font-size:10.5pt;">×*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">f/k(1)(k-*n><*n style="font-family:宋体;font-size:10.5pt;">仪表系数,次*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">/*n><*n style="font-family:宋体;font-size:10.5pt;">升。
*n>
<*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">【进口*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">HTLJ<*n>系列涡街流量计*n>*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">】*n><*n style="font-family:宋体;font-size:10.5pt;">技术参数<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">1*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>测量介质*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">: *n><*n style="font-family:宋体;font-size:10.5pt;">液体、气体、过热*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">/*n><*n style="font-family:宋体;font-size:10.5pt;">饱和蒸汽。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">2*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>测量范围*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">: *n><*n style="font-family:宋体;font-size:10.5pt;">正常工作范围*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">,*n><*n style="font-family:宋体;font-size:10.5pt;">雷诺数为*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">20,000*n><*n style="font-family:宋体;font-size:10.5pt;">~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">7,000,000;*n><*n style="font-family:宋体;font-size:10.5pt;">测量可能范围雷诺数为*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">8*n><*n style="font-family:宋体;font-size:10.5pt;">,*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">000*n><*n style="font-family:宋体;font-size:10.5pt;">~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">7,000,000*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">3*n><*n style="font-family:宋体;font-size:10.5pt;">准确度*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:&nb*.*n><*n style="font-family:宋体;font-size:10.5pt;">液体,指示值的±*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">0.5*n><*n style="font-family:宋体;font-size:10.5pt;">%*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">b.<*n>液体,指示值的±*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">1.0*n><*n style="font-family:宋体;font-size:10.5pt;">%*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">c.<*n>气体,指示值的±*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">1.0*n><*n style="font-family:宋体;font-size:10.5pt;">%*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">d.<*n>蒸汽,指示值的±*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">1.0*n><*n style="font-family:宋体;font-size:10.5pt;">%*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">e.<*n>蒸汽,指示值的±*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">1.5*n><*n style="font-family:宋体;font-size:10.5pt;">%*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">4*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>重复性*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">: *n><*n style="font-family:宋体;font-size:10.5pt;">≤准确度的*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">1/3*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">5*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>输出信号*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:&nb*.*n><*n style="font-family:宋体;font-size:10.5pt;">三线制电压脉冲低电平*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:0*n><*n style="font-family:宋体;font-size:10.5pt;">~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">1V;*n><*n style="font-family:宋体;font-size:10.5pt;">高电平*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:*n><*n style="font-family:宋体;font-size:10.5pt;">大于*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">4V;*n><*n style="font-family:宋体;font-size:10.5pt;">占空比为*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">50*n><*n style="font-family:宋体;font-size:10.5pt;">%*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">b.<*n>二线制电流*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">4mA*n><*n style="font-family:宋体;font-size:10.5pt;">~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">20mA*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">c.<*n>三线制电流*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">4mA*n><*n style="font-family:宋体;font-size:10.5pt;">~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">20mA*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">d.RS-485<*n>通讯接口*n><*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">6*n><*n style="font-family:宋体;font-size:10.5pt;">电源电压*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">: 24VDC(*n><*n style="font-family:宋体;font-size:10.5pt;">二线制*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">/RS485*n><*n style="font-family:宋体;font-size:10.5pt;">通讯*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">)*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">7*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>介质温度*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">: *n><*n style="font-family:宋体;font-size:10.5pt;">普通型*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">-40*n><*n style="font-family:宋体;font-size:10.5pt;">℃~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">+130*n><*n style="font-family:宋体;font-size:10.5pt;">℃*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">高温型*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">-40*n><*n style="font-family:宋体;font-size:10.5pt;">℃~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">+250*n><*n style="font-family:宋体;font-size:10.5pt;">℃*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">特高温型*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:-10*n><*n style="font-family:宋体;font-size:10.5pt;">℃~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">+350*n><*n style="font-family:宋体;font-size:10.5pt;">℃*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;-10*n><*n style="font-family:宋体;font-size:10.5pt;">℃~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">+380*n><*n style="font-family:宋体;font-size:10.5pt;">℃可选*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">防爆型*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">-40*n><*n style="font-family:宋体;font-size:10.5pt;">℃~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">+80*n><*n style="font-family:宋体;font-size:10.5pt;">℃*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;
*n><*n style="font-family:宋体;font-size:10.5pt;">8*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>工作压力*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">: 2.5MPa(*n><*n style="font-family:宋体;font-size:10.5pt;">注*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:*n><*n style="font-family:宋体;font-size:10.5pt;">应用户要求,可提供其它压力等级的传感器,需定做*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">)*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">9*n><*n style="font-family:宋体;font-size:10.5pt;">大气压力*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">: 86kPa*n><*n style="font-family:宋体;font-size:10.5pt;">~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">106kPa*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">10*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>压力损失*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">: *n><*n style="font-family:宋体;font-size:10.5pt;">Δ*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">P=1.079*n><*n style="font-family:宋体;font-size:10.5pt;">×*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">10-6 *n><*n style="font-family:宋体;font-size:10.5pt;">×ρ×*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">V2(*n><*n style="font-family:宋体;font-size:10.5pt;">式中*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:*n><*n style="font-family:宋体;font-size:10.5pt;">Δ*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">P-*n><*n style="font-family:宋体;font-size:10.5pt;">压力损失*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">MPa;*n><*n style="font-family:宋体;font-size:10.5pt;">ρ*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">-*n><*n style="font-family:宋体;font-size:10.5pt;">被测介质的密度*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">kg/m 3;V-*n><*n style="font-family:宋体;font-size:10.5pt;">被测<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">介质的流速*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">m/s)*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n>
<*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">【进口*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">HTLJ<*n>系列涡街流量计*n>*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">】*n><*n style="font-family:宋体;font-size:10.5pt;">本体材质*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:a.*n><*n style="font-family:宋体;font-size:10.5pt;">碳钢*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;b.*n><*n style="font-family:宋体;font-size:10.5pt;">不锈钢*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">(1Cr18Ni9Ti)*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n>
<*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">【进口*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">HTLJ<*n>系列涡街流量计*n>*n><*n style="font-size:10.5pt;line-height:1.5;font-family:宋体;">】*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>规格*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">(*n><*n style="font-family:宋体;font-size:10.5pt;">管道内径*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">):20*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">25*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">32*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">40*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">50*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">65*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">80*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">100*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">125*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">150*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">200*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">250*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">300*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">350*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">400*n><*n style="font-family:宋体;font-size:10.5pt;">、*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">500mm*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>环境温度*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:-30*n><*n style="font-family:宋体;font-size:10.5pt;">℃~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">+60*n><*n style="font-family:宋体;font-size:10.5pt;">℃。<*n> *n>*n><*n style="font-family:宋体;font-size:10.5pt;"> *n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>相对湿度*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:5*n><*n style="font-family:宋体;font-size:10.5pt;">%~*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">95*n><*n style="font-family:宋体;font-size:10.5pt;">%<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>电缆接口*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:PG10*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n> *n>*n><*n style="font-family:宋体;font-size:10.5pt;"> *n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>保护等级*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:IP65*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;"> <*n>防爆类型*n>*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:*n><*n style="font-family:宋体;font-size:10.5pt;">隔爆型*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;*n><*n style="font-family:宋体;font-size:10.5pt;">防爆标志*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:Exd*n><*n style="font-family:宋体;font-size:10.5pt;">Ⅱ*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">BT4;*n><*n style="font-family:宋体;font-size:10.5pt;">本安型*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">;*n><*n style="font-family:宋体;font-size:10.5pt;">防爆标志*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:Exia*n><*n style="font-family:宋体;font-size:10.5pt;">Ⅱ*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">CT6*n><*n style="font-family:宋体;font-size:10.5pt;">。<*n>
*n>*n><*n style="font-family:宋体;font-size:10.5pt;">工作状况下流量范围*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">(*n><*n style="font-family:宋体;font-size:10.5pt;">单位*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:m3 /h)*n><*n style="font-family:宋体;font-size:10.5pt;">,见表*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">1(*n><*n style="font-family:宋体;font-size:10.5pt;">注*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">:*n><*n style="font-family:宋体;font-size:10.5pt;">如果用户要求下限低,请来电告之,可定做*n><*n style="font-family:'Times New Roman';font-size:10.5pt;">)*n><*n style="font-family:宋体;font-size:10.5pt;">。
*n>