智能系列电容式差压/ 压力变送器BLD-3351
Intelligent series capacitive differential/pressure transducer
概述
BLD-3351小型化系列压力/差压变送器是采用国外应用最广泛,技术最为成熟的电容式传感器芯体,并引进国外全套生产工艺和技术,严格执行质量管理体系 9001:2000 标准,生产出的最新型系列化压力 / 差压变送器。产品模块化设计和全贴片封装,多款精致独特的塑料模具配以先进的激光雕刻手段,使得产品更加紧凑完美。
BLD-3351系列压力 / 差压变送器针对国内不同用户的要求,同时推出 N 型(普通模拟型)、和 S 型(标准智能型)二种规格;背光蓝屏液晶表头克服夜间无法读数的缺陷;智能系列通过就地按钮,可现场调零或重新标定量程,通过手操器或通讯软件还可实现无源标定和数据组态。根据用户的特殊需求,智能化系列最大可达到宽量程比(50:1)和高精度(0 . 1% )。采用一体化电容传感器结构,从根本上消除了安装应力和密封失效问题,大大提高了可靠性和稳定性。
Summarize
BLD-3351 miniaturization series pressure/differential transducer are use capacitive sensor core, and advanced production technics and technology, perform 9001:2000 standard strictly,produce new type pressure /transducer.
BLD-3351 series pressure/ differential transducer has N type(standard simulation type) and S type (standard intelligent type); apheliotropic blue LCD screen overcomes unread ness in night;Intelligent series use local button, can adjust zero or reset range. According to customer request, it can reach range ratio 50:1 and accuracy 0.1%. Use integrative capacitance transducer configuration,has reliability and stability.
特点
● 量程迁移比大
● 全系列统一结构设计 互换性强
● 通过显示表按键实现现场组态,不需要手操器或PC 机
● 实现PV 清零
● 具有自诊断功能
● 宽视角 背光液晶显示
● 高精度、高稳定性、高可靠性
● HART 协议数字通讯技术
Characteristic
● range transference large
● Same configuration of this series, can interconnect
● display gauge outfit key-press controls local configuration,needn t manual ware or PC machine.
● PV reset
● with self diagnosis function
● broad visual angle apheliotropic LCD screen
● high accuracy, high stability, high reliability
● HART numeral communication technology
应用
BLD3351S 智能型差压/ 压力变送器可广泛的应用于石油、化工、钢铁、电力食品、造纸、纺织、医药、轻工、环保等工业领域,实现对各种流体的差压、压力、流量、液位等的测量和控制,适用于各种腐蚀性介质环境及恶劣、危险场所,能够最大限度的满足客户的需要。
工作原理
过程压力通过两侧或一侧的隔离膜片、灌充液传至δ室的中心测量膜片。中心膜片是一个张紧的弹性元件,它对于作用在其上的两侧压力差产生相应变形位移,其位移与差压成正比,最大位移约 0. 1 mm ,这种位移转变为电容极板上形成的差动电容,由电子线路把差动电容转换成二线制的4 ~ 20mA DC 输出信号。(见图1)
Application
BLD3351S intelligent type differential/pressure transducer use for petroleum, chemical industry, steel, electric power, food, paper making, weave, medicine, light industry, environmental etc. control and measure liquid differential pressure, pressure, runoff, apply for corrosive medium, can fit for customer request.
Working principle
Process pressure through tow sides or one side separate diaphragm, filled liquid transmit to center measuring diaphragm of chamber. Center diaphragm is a stretch flexibility element. When it arises pressure on the sides, it will has relevant displacement, the displacement and the differential pressure are direct ratio. maximal displacement is 0. 1 mm . This kind of displacement change into differential capacitance on the capacitance board,electron circuitry transform differential capacitance into two lines 4 ~ 20mA DC output signal(scheme 1)
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