一、进口不锈钢防爆型电磁流量计概述
进口不锈钢防爆型电磁流量计,防爆等级:Exd(ib)ibqⅡBT5 MF01(Ex)传感器与E8300转换器配套组合成的防爆型电磁流量计,可在防爆场合使用,根据现场需要可以一体式或分体式组合,利用恒流低频三值矩形波或双频矩形波励磁,既有矩形波磁场的优点,又克服了正弦波磁场的缺点;还可以消除电源电压波动、电源频率变化及励磁线圈阻抗变化所造成的误差;并有极好的零点稳定性和不受流体噪声干扰影响。从而具有高稳定性、高可靠性的特点。防爆型电磁流量计测量原理是基于法拉第电磁感应定律,由传感器和转换器组成,传感器安装在测量管道上,转换器可以与传感器组合连接在一起称为一体型电磁流量计 ,转换器被安装在离传感器30米内或100米内的场合,两者间由屏蔽电缆连接称为分体型电磁流量计 。传感器主要组成部分是:测量管、电极、励磁线圈、铁芯与磁轭壳体,主要用于测量封闭管道中的导电液体和浆液中的体积流量,如水、污水、泥浆、纸浆、各种酸、碱、盐溶液、食品浆液等。防爆型电磁流量计广泛应用于石油、化工、冶金、纺织、食品、制药、造纸等行业以及环保、市政管理,水利建设等领域。
Stainless steel explosion-proof electromagnetic flowmeter, explosion-proof grade: Exd (ib) ibq Ⅱ BT5 MF01 (Ex) sensor combined with E8300 converter, explosion-proof electromagnetic flowmeter can be used in explosion-proof situations. It can be integrated or split combination according to on-site needs, using constant current low-frequency ternary rectangular wave or dual frequency rectangular wave excitation, which not only has the advantages of rectangular wave magnetic field but also overcomes the disadvantages of sine wave magnetic field; It can also eliminate errors caused by fluctuations in power supply voltage, changes in power supply frequency, and changes in excitation coil impedance; And it has excellent zero point stability and is not affected by fluid noise interference. Therefore, it has the characteristics of high stability and high reliability. The measurement principle of explosion-proof electromagnetic flowmeter is based on Faraday's law of electromagnetic induction, consisting of a sensor and a converter. The sensor is installed on the measurement pipeline, and the converter can be combined and connected with the sensor, which is called a one-piece electromagnetic flowmeter. The converter is installed within 30 meters or 100 meters from the sensor, and the two are connected by shielded cables, which is called a split type electromagnetic flowmeter. The main components of the sensor are: measuring tube, electrode, excitation coil, iron core and magnetic yoke shell, mainly used to measure the volume flow rate of conductive liquid and slurry in closed pipelines, such as water, sewage, mud, pulp, various acid, alkali, salt solutions, food slurry, etc. Explosion proof electromagnetic flow meters are widely used in industries such as petroleum, chemical, metallurgical, textile, food, pharmaceutical, papermaking, as well as environmental protection, municipal management, and water conservancy construction.
二、进口不锈钢防爆型电磁流量计技术指标
公称通径:DN3~DN300 | 介质导电率:》20μS/cm | |
衬里材料:聚氨酯橡胶、高温橡胶、耐酸橡胶、氯丁橡胶、PTFE、F46、PFA | 电极材料:含钼不锈钢、哈氏B、哈氏C、钛、钽、铂铱合金 | |
一体型工作环境温度:-20℃~50℃ | 转换器工作环境湿度:《95% | |
外壳防护等级:IP60、IP68 | 流速测量范围:0~15米/秒 | |
配套精度等级:0.5级、0.2级 | 测量参数:瞬时流量、流速、正反向累计总量 | |
检测报警参数:流体空管检测报警、励磁电流检测报警、上下限报警、系统报警 | 网络功能:HART、MODBUS、GPRS、PROFIBUS(选配) |
三、进口不锈钢防爆型电磁流量计接线
1、若采用分体安装连接的信号电缆采用定制专用电缆线,电缆线越短越好。
2、励磁电缆可选用Yz中型橡套电缆,其长度和信号电缆一样。
3、信号电缆必须与其他的电源严格分开,不能敷设在同一根管子内。
4、信号电缆和励磁电缆尽可能短,不能将多余的电缆卷在一起,应将多余的电缆剪掉,并重新焊好接头。
5、电缆连接传感器电器接口时,在端口处做成U型,这样可以防止雨水渗透到传感器中。
1. If signal cables connected through split installation are customized with dedicated cables, the shorter the cable, the better.
2. The excitation cable can be Yz medium rubber sheathed cable, with the same length as the signal cable.
3. Signal cables must be strictly separated from other power sources and cannot be laid in the same pipe.
4. Signal cables and excitation cables should be as short as possible, and excess cables should not be rolled together. Excess cables should be cut off and the joints should be re soldered.
5. When connecting the cable to the sensor electrical interface, make a U-shaped shape at the port to prevent rainwater from penetrating the sensor.
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