26GHz雷達物位計 返回列表頁

一、產(chǎn)品概述

26GHz雷達物位計9X0X 系列傳感器是26G高頻雷達式物位測量儀表，測量大距離可達80米。天線被進一步優(yōu)化處理，新型快速的微處理器可以進行更高速率的信號分析處理，使得儀表可以用于各種強腐蝕性液體的測量。

二、雷達物位計工作原理

雷達物位天線發(fā)射較窄的微波脈沖，經(jīng)天線向下傳輸。微波接觸到被測介質(zhì)表面后被反射回來再次被天線系統(tǒng)接收，將信號傳輸給電子線路部分自動轉(zhuǎn)換成物位信號（因為微波傳播速度極快，電磁波到達目標(biāo)并經(jīng)反射返回接收器這一來回所用的時間幾乎是瞬間的）。

三、26GHz雷達物位計特點：

l 天線尺寸小，便于安裝；非接觸雷達，無磨損，無污染。

l 幾乎不受腐蝕、泡沫影響；幾乎不受大氣中水蒸氣、溫度和壓力變化影響。

l 嚴重粉塵環(huán)境對高頻物位計工作影響不大。

l 波長更短，對在傾斜的固體表面有更好的反射。

l 波束角小，能量集中，增強了回波能力的同時又有利于避開干擾物。

l 測量盲區(qū)更小，對于小罐測量也會取得良好的效果。

l 高信噪比，即使在波動的情況下也能獲得更優(yōu)的性能。

l 高頻率，是測量固體和低介電常數(shù)介質(zhì)的好的選擇。

技術(shù)參數(shù)

過程連接            螺紋 G1½ ”A /    螺紋 1½ ”NPT /   法蘭

天線型材            不銹鋼 / PTFE

外 殼                                                                                                                

外殼和外殼蓋之間的密封                                       硅橡膠

                            外殼視窗                                                                   聚碳酸酯

                            接地端子                                                                   不銹鋼

供電電壓

兩線制                                                 標(biāo)準型                                (16～26) V DC

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

                                                                        功耗                                    max 22. 5mA / 1W

                                                                        允許紋波

- <100Hz                            Uss < lV

                                                                      - (100～100K) Hz              Uss < l0mV 

   隔爆型                                                 (22. 8～26. 4) V DC     兩線制

                                                                        (198～242) V AC    四線制  /  110V AC   四線制

電纜參數(shù)                           

電纜入口／插頭                1個M20xl.5電纜入口

                                            1個盲堵M20xl.5

                                                                      接線端子                            導(dǎo)線橫截面2.5mm²

輸出參數(shù)                           

輸出信號                             (4～2 0) mA

                                                                      通訊協(xié)議                              HART

                                                                      分辨率                                  1. 6μA

                                                                      故障信號                             電流輸出不變；

20. 5mA

22mA；

3.9mA

                                                                       積分時間                            (0～36)s，可調(diào)

盲區(qū)                                                           天線末端

大測量距離                                           9801                                   10米   （液體型） 

                                                                       9802                                   30米   （液體型）

                                                                       9802T                                 20米   （液體型）

                                                                       9901                                   70米  （固體型）

                                                                       9902                                    80米  （固體型）

                                                                       9903                                   30米  （固體型）

                                                                       9803                                   20米  （液體型）

微波頻率                                                   26GHz

通訊接口                                                   HART通訊協(xié)議

測量間隔                                                    大約1秒（取決于參數(shù)設(shè)置）

調(diào)整時間                                                    大約1秒（取決于參數(shù)設(shè)置）

顯示分辨率                                                1mm

工作存儲及運輸溫度                                (-40～100) ℃

過程溫度（天線部分的溫度）                9801                                   (-40～130)℃

                                                                        9802                                   (-40～250)℃

                                                                        9802T                                 (-40～250)℃

                                                                        9901                                  (-40～250)℃

                                                                        9902                                   (-40～250)℃

                                                                        9903                                 (-40～250)℃

                                                                        9803                                    (-40～130)℃ 

相對濕度                                                    ? 95%

壓力                                                      Max. 4MPa

耐震                                                      機械震動l0m/s² , (10～150)Hz