无线压力变送器 --> 产品介绍:
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一、概述
我公司生产的无线压力变送器系采用中美合资麦克扩散硅传感器和目前性能及稳定性都非常卓越的Motorola超低功耗的微处理器及高精度传感器信号处理电路为一体的智能化压力检测仪表;在此基础上加入了无线远传模块,可与我们的智能无线接收终端组成压力采集系统。本系统改变以往工业上大部分采用RS485和4~20mA电流信号的传输方式和开关电源供电模式,而采用3.6V的锂电池供电;从而简化了安装方式、节约了客户布线的成本,真正达到节能环保的目的。该产品广泛应用于各种工业测压系统中,如油田、电力、石化和一些布线不方便的场合。
二、主要技术指标
1)量程:0~70(MPa);
2)供电电源:两节3.6V/9Ah锂电池;
3)精度:0.2级,0.5级,1.0级;
4)显示:四位静态液晶,显示清晰、无残留;
5)过载:150%FS;
6)传输距离:视距>150米;
7)采用铝合金外壳、坚固、耐腐蚀;
8)环境温度:-30℃~+85℃;
9)环境湿度:<95%RH;
10)零点温度漂移:±0.015%FS/℃;
11)灵敏度温度漂移:±0.015%/℃;
12)适用介质:油、气、水等液体;
13)防爆等级:EXdⅡBT4;
14)频率:中心频率433MHz;
15)可与配套的接收机组网;
三、安装尺寸及接口说明
1、外形尺寸图
2、系统原理
将本仪表的安装在管道上,当管道中的介质作用于敏感元件上,使之受压,其内部电路检测出与过程压力成正比的电信号,通过线性放大电路对该信号进行精确的放大、补偿等处理后,进入微处理器进行数据的测量、处理、显示,并将测量数据无线传输到远方的终端设备上。