一、产品概述

26GHz雷达物位计9X0X 系列传感器是26G高频雷达式物位测量仪表，测量大距离可达80米。天线被进一步优化处理，新型快速的微处理器可以进行更高速率的信号分析处理，使得仪表可以用于各种强腐蚀性液体的测量。

二、雷达物位计工作原理

雷达物位天线发射较窄的微波脉冲，经天线向下传输。微波接触到被测介质表面后被反射回来再次被天线系统接收，将信号传输给电子线路部分自动转换成物位信号（因为微波传播速度极快，电磁波到达目标并经反射返回接收器这一来回所用的时间几乎是瞬间的）。

三、26GHz雷达物位计特点：

l 天线尺寸小，便于安装；非接触雷达，无磨损，无污染。

l 几乎不受腐蚀、泡沫影响；几乎不受大气中水蒸气、温度和压力变化影响。

l 严重粉尘环境对高频物位计工作影响不大。

l 波长更短，对在倾斜的固体表面有更好的反射。

l 波束角小，能量集中，增强了回波能力的同时又有利于避开干扰物。

l 测量盲区更小，对于小罐测量也会取得良好的效果。

l 高信噪比，即使在波动的情况下也能获得更优的性能。

l 高频率，是测量固体和低介电常数介质的好的选择。

技术参数

过程连接            螺纹 G1½ ”A /    螺纹 1½ ”NPT /   法兰

天线型材            不锈钢 / PTFE

外 壳                                                                                                                

外壳和外壳盖之间的密封                                       硅橡胶

                            外壳视窗                                                                   聚碳酸酯

                            接地端子                                                                   不锈钢

供电电压

两线制                                                 标准型                                (16～26) V DC

                                                                        本安型                                (21. 6～26. 4) V DC

                                                                        功耗                                    max 22. 5mA / 1W

                                                                        允许纹波

- <100Hz                            Uss < lV

                                                                      - (100～100K) Hz              Uss < l0mV 

   隔爆型                                                 (22. 8～26. 4) V DC     两线制

                                                                        (198～242) V AC    四线制  /  110V AC   四线制

电缆参数                           

电缆入口／插头                1个M20xl.5电缆入口

                                            1个盲堵M20xl.5

                                                                      接线端子                            导线横截面2.5mm²

输出参数                           

输出信号                             (4～2 0) mA

                                                                      通讯协议                              HART

                                                                      分辨率                                  1. 6μA

                                                                      故障信号                             电流输出不变；

20. 5mA

22mA；

3.9mA

                                                                       积分时间                            (0～36)s，可调

盲区                                                           天线末端

大测量距离                                           9801                                   10米   （液体型） 

                                                                       9802                                   30米   （液体型）

                                                                       9802T                                 20米   （液体型）

                                                                       9901                                   70米  （固体型）

                                                                       9902                                    80米  （固体型）

                                                                       9903                                   30米  （固体型）

                                                                       9803                                   20米  （液体型）

微波频率                                                   26GHz

通讯接口                                                   HART通讯协议

测量间隔                                                    大约1秒（取决于参数设置）

调整时间                                                    大约1秒（取决于参数设置）

显示分辨率                                                1mm

工作存储及运输温度                                (-40～100) ℃

过程温度（天线部分的温度）                9801                                   (-40～130)℃

                                                                        9802                                   (-40～250)℃

                                                                        9802T                                 (-40～250)℃

                                                                        9901                                  (-40～250)℃

                                                                        9902                                   (-40～250)℃

                                                                        9903                                 (-40～250)℃

                                                                        9803                                    (-40～130)℃ 

相对湿度                                                    ? 95%

压力                                                      Max. 4MPa

耐震                                                      机械震动l0m/s² , (10～150)Hz