超声波液位计培训.ppt

1、2020/5/19 Endress+Hauser 周晓 1 Endress+Hauser Endress+Hauser 超声波基本原理超声波基本原理 2020/5/19 Endress+Hauser 周晓 2 1969 1997 1985/86 1993 1996 First Nivosonic family with analog evaluation 1977- 84 Birthyear of ultrasonics Nivosonic 19“ goes -processor Prosonic Fieldhousing with new sensor generation FDU 8x -

2、 application parameters - heated sensors - 5 Relais - HART - RS 485 Prosonic T - compact - 2 wire - Profibus PA - relay FDU 8x F - flange mounting - high resistance - 3 A 1999 FDU 86 - 70 m / 230 ft - 150 C - patented drive 2002 超声波超声波 350 000 350 000 应用应用 2020/5/19 Endress+Hauser 周晓 3 压电晶体的效应压电晶体的效

3、应 交流电压以交变频率使石英晶体振荡交流电压以交变频率使石英晶体振荡 单独石英晶体单独石英晶体 在极化后由一个固定在极化后由一个固定 的方向的方向 1 2 相同极性的电压相同极性的电压 - 石英晶体被压缩石英晶体被压缩 - 3 不同极性的电压不同极性的电压 - 石英晶体被膨胀石英晶体被膨胀 - 2020/5/19 Endress+Hauser 周晓 4 超声波的驱动技术超声波的驱动技术 活塞型振荡器活塞型振荡器 耦合型振荡器耦合型振荡器 D A E C B 石英晶体石英晶体 阻抗匹配层阻抗匹配层 传感器体传感器体 阻尼层阻尼层 传感器衰减传感器衰减 A D E B C 曲线式振荡器曲线式振荡器

4、 2 3 3 5 1 1 4 4 石英晶体石英晶体 平板膜片平板膜片 膜片振荡膜片振荡 格栅格栅 在格栅前的声音压力在格栅前的声音压力 2 3 4 5 1 石英晶体石英晶体 幅值幅值/ 平面转换平面转换 波峰波峰 膜片膜片 计数器配重计数器配重 2 3 4 5 1 5 2 e.g. Prosonic T e.g. DU 44/46 e.g. FDU 86 2020/5/19 Endress+Hauser 周晓 5 声速的效应声速的效应 Air moisture 0.3 % with change in relative moisture from 0 to 100 % Pressure cha

5、nge 30 bar change in run time approx. 0.3 % 温度温度 0.17 %/ c = c 穧 R (273 + T) M m c: velocity of sound m/s Rm: universal gas constant (8314,3 J/k kmol) T: temperature : adiabatic index c = = 344 m/s 1.4 8314.3 (273 + 20) 28.8 贩 c air at 20 不相干的不相干的 测量测量/ 补偿补偿 蒸汽压力蒸汽压力 with one operating + set up phil

6、osophy 明渠流量明渠流量 + ToF-Tool 低成本的明渠测量低成本的明渠测量 135791113151719212325272931 2020/5/19 Endress+Hauser 周晓 50 IP 68 / NEMA 6P 菜单驱动的现场操作菜单驱动的现场操作 ToF-Tool 2- / 4- wire Prosonic Prosonic - - HighlightsHighlights 远程操作与显示远程操作与显示 通信通信 PulseMaster 2.0 现场显示回波曲线现场显示回波曲线 2020/5/19 Endress+Hauser 周晓 51 Prosonic M /

7、T in the Prosonic M / T in the marketsmarkets 2 / 4 wire ATEX W/WW Chemicals Storage Process Buffer Agitator Solids 2 wire 无防爆认证无防爆认证 无通信无通信 For low cost price fights in W/WW without special requirements in com. or Ex certificates W/WW FTU 2020/5/19 Endress+Hauser 周晓 52 price Performance Prosonic T

8、2 wire or relay max. Range 7 m price attractive Prosonic M 2 wire or 4 wire max. Range 15 m menue guided set up Envelope on display HART, PA , FF ToF Tool Prosonic 4 wire separate instrumentation max. range 70 m up to 5 relays 2 channels OCM preprogrammed W/WW features HART, DP, RS 485 CW II Full ra

9、nge in UltrasonicsFull range in Ultrasonics FTU 230 FTU 231 FMU 230 FMU 231 2020/5/19 Endress+Hauser 周晓 53 price Performance Full range in UltrasonicsFull range in Ultrasonics FMU/FTU 230/1 FMU 40 FMU 41 FMU 43 2020/5/19 Endress+Hauser 周晓 54 Where to use what in Ultrasonics ?Where to use what in Ult

10、rasonics ? liquidsliquids 低档低档 中档中档 高档高档 Prosonic T Prosonic M Prosonic flat surface no fixed targets no agitator /condensation no communication no Ex price attractive Main industry W/WW turbulent surface fixed targets (ladder,) agitators floodable Main industries: W/WW, Chemicals, separate instrume

11、ntation relays counter OCM, W/WW features 2 channel, differential Main industries: W/WW, Chemicals, Food, . 2020/5/19 Endress+Hauser 周晓 55 Where to use what in Ultrasonics ? Where to use what in Ultrasonics ? SolidsSolids 低档低档 高档高档 Prosonic T FTU Prosonic M Prosonic grain size 24 mm/ 0,1 in. up to 3

12、,5 m / 11,4 ft Relay output price attractive grain size 24 mm/ 0,1 in. robust aluminium housing fixed target suppression 4 wire continuos, fast changes PA/FF, 4 - 20 mA up to 7 m / 23 ft grain size 24 mm/ 0,1 in. separate instrumentation excavator, crusher high vibrations, rough cond. up to 70 m / 2

13、30 ft Temp. up to 150 C 中档中档 2020/5/19 Endress+Hauser 周晓 56 Prosonic M FMU 40 in a Prosonic M FMU 40 in a thickenerthickener Foam surface and agitator Company: Waste water plant Weil, Germany Product: 污泥污泥 Tank: 直径直径: 8 m / 26 ft 高度高度: 5 m / 16 ft Conditions: High humidity Condensation 搅拌器搅拌器: 1 rou

14、nd / 20 min. 2020/5/19 Endress+Hauser 周晓 57 Prosonic M FMU 40 at a lift Prosonic M FMU 40 at a lift stationstation Company: Waste water plant Weil, Germany Product: 水水 量程量程: 4 m Pumpcontrol Installation since 7. Aug. 2001 0 10 20 30 40 50 60 70 80 90 100 7.8.2001/16:00 bis 10.8.2001/10:00 Fllstand (%) 2020/5/19 Endress+Hauser 周晓 58 Prosonic M FMU 41 in a Prosonic M FMU 41 in a sludge storagesludge storage Company: Waste water plant Kammerforst, Germany Product: 污泥污泥 Tank: 直径直径: 16 m 高度高度: 4 m 2 FMU 4x mounted since 22.08.01 Replacement of hydrostatic