SCHNEIDER STBDAI7220
SCHNEIDER STBDAI7220
主要应用
在石油、石化、化工方面,可测量管道和贮罐的压力。
在电力、城市煤气和其他公用事业方面,可用于要求高稳定度和高精度的测量。
在钢铁、有色金属和陶瓷方面,用于在严格控制(温度和湿度)条件下要求稳定测量的场合。
在纸浆和造纸方面,可用于要耐化学液体、耐腐蚀性液体之类的变送器。
在机械和造船方面,可用于严格控制(温度和湿度)条件下要求稳定测量的场合。
二、性能规格
零点迁移量
最大正迁移量:测量范围上限值与测量量程之差
最大负迁移量:不大于大气压
测量范围
测量下限:-100%URL(≥-0.1MPa)~+100%URL-Span
测量上限:-100%URL+Span(≥-0.1MPa+Span)~+100%URL
负载特性
变送器负载特性为:RL≤(Vs-Vm)V/0.023A式中:RL--最大负载电阻;Vs--供电电源;Vm--无LCD显示表头时为11V,带LCD 显示表头时为15V。HART 通信时负载电阻(含信号接收电阻及信号传输导线电阻)要求230Ω~600Ω。
量程和零位的调整
HART手操器、就地按钮、支持HART协议的通信软件。
响应时间
当变送器的电气阻尼关闭时,变送器对阶跃输入(10%)的响应时间(63%)小于或等于0.4s。
测量对象:液体、蒸汽、气体
工作温度:-40℃~85℃
精度等级:0.1%F.S
量 程 比:100:1
绝缘电阻:>100MΩ(500VDC)
电气阻尼:0.1~16s 可任选
温度影响量:优于0.1%F.S/10℃
供电电源:11~45VDC(不带背光显示)
15~45VDC(带背光显示)
EMC:符合EN 61326-1:2013标准
输出信号:4~20mA(Max 22mA,Min 3.8mA)
通信接口:HART通信
本安性能:EX ia IIC T6
智能差压液位式变送器是一种直接安装在管道或容器上的现场变送器。由于隔离膜片直接与液体介质相接触,无须将正压侧用导压管引出,因此可以测量高温,高粘度,易结晶、易沉淀和强腐蚀等介质的液位、压力和密度,然后将其转换成4-20mADC信号输出。液位变送器广泛应用于河流、地下水位、水库、水塔及容器等场合的液位测量与控制,它是通过测量液体的压力进而换算成液位的一种传感器。
厦门兴锐达自动化设备有限公司
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