超声波物位计探头
Technical Data
CompareContinuous / Liquids
| Measuring Principle | Ultrasonic |
| Characteristic / Application | Separated version with field housing or top hat rail housing for control cabinet instrumentation, 300 m in-between sensor and transmitter |
| Supply / Communication | 4-wire (HART, PROFIBUS DP) |
| Accuracy | +/- 2 mm + 0.17% of measured distance |
| Ambient temperature | -40 °C...80 °C or 150 °C, (-40 °F...176 °F or 302 °F) |
| Process temperature | -40 °C...80 °C or 150 °C, (-40 °F...176 °F or 302 °F) |
| Process pressure / max. overpressure limit | 0.7 bar...1.5 bar abs (10 psi...22 psi) |
| Main wetted parts | UP (unsaturated polyester) |
| Process connection | G / NPT 1" |
| Blocking distance | 0.7 m / 80 °C, (2.3 ft / 176 °F), 0.9 m / 150 °C, (2.9 ft / 302 °F) |
| Max. measurement distance | 45 m (148 ft) |
| Communication | Transmitter: 4...20 mA HART PROFIBUS DP |
| Certificates / Approvals | ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI,UK Ex |
| Options | Second 4...20 mA output |
| Components | Transmitter: FMU90, FMU95 |
Continuous / Solids
| Measuring Principle | Ultrasonic |
| Characteristic / Application | Separated version with field housing or top hat rail housing for control cabinet instrumentation, 300m in-between sensor and transmitter |
| Supply / Communication | 4-wire (HART, PROFIBUS DP) |
| Accuracy | +/- 2mm + 0.17% of measured distance |
| Ambient temperature | -40 °C ... 80 °C or 150 °C (-40 °F ... 176 °F or 302 °F) |
| Process temperature | -40 °C ... 80 °C or 150 °C (-40 °F ... 176 °F or 302 °F) |
| Process pressure / max. overpressure limit | 0.7 bar...1.5 bar abs (10 psi...22 psi) |
| Main wetted parts | UP (unsaturated polyester) |
| Process connection | G / NPT 1" |
| Blocking distance | 0.7 m / 80 °C (2.3 ft / 176 °F) 0.9 m / 150 °C (2.9 ft / 302 °F) |
| Max. measurement distance | 45 m (148 ft) |
| Communication | Transmitter: 4 ... 20 mA HART PROFIBUS DP |
| Certificates / Approvals | ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, UK Ex |
| Options | Second 4...20mA output |
| Components | Transmitter: FMU90 |
The FDU95 ultrasonic sensor is suitable for continuous, non-contact level measurement of powders and coarse bulk solids and is maintenance-free. The measurement is unaffected by dielectric constant, density or humidity, and the self-cleaning function of the sensor eliminates the influence of medium adhesion on the measurement. Suitable for hazardous areas; maximum measuring range: solids 45 m (148 ft).
Benefits
Integrated temperature sensor for time-of-flight correction. Precise measurement even when the temperature changes
Suitable for use in harsh climatic conditions; sensor and transmitter can be installed separately up to 300 m apart
Sensor self-cleaning function reduces adhesion formation
Integrated automatic sensor detection for convenient commissioning with the FMU90 / FMU95 level transmitter
Degree of protection IP68
Non-contact measurement minimizes service requirements
Dust-Ex and gas-Ex approval (ATEX, FM, CSA)
Applications
Suitable for continuous, non-contact level measurement of powders and coarse bulk solids; maximum measuring range: solids 45 m; suitable for hazardous areas; other measuring ranges: FDU91/FDU91F: liquids 10 m, solids 5 m; FDU92: liquids 20 m, solids 10 m; FDU93: liquids 25 m, solids 15 m; FDU96: solids 70 m
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Technical documentation
Technical data
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Measurement principle video
Source: Endress+Hauserpublic information from the website
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Case Studies
市政污水处理污水处理厂 · 超声波应用案例
项目背景
市政污水处理客户在污水处理厂环节，长期面临「出水水质监测精度不足、仪表易受污染导致数据漂移，影响达标排放」的困扰，对超声波的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的超声波，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应市政污水处理复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
食品饮料食品生产线 · 超声波应用案例
项目背景
食品饮料客户在食品生产线环节，长期面临「卫生级测量要求高，在线仪表需耐 CIP/SIP 清洗且精度稳定」的困扰，对超声波的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的超声波，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应食品饮料复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
化工制药反应釜与储罐 · 超声波应用案例
项目背景
化工制药客户在反应釜与储罐环节，长期面临「介质腐蚀性强、工况复杂，仪表需耐腐蚀且防爆」的困扰，对超声波的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的超声波，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应化工制药复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
电力能源电厂锅炉与汽机 · 超声波应用案例
项目背景
电力能源客户在电厂锅炉与汽机环节，长期面临「高温高压工况下测量不稳定，维护停机成本高」的困扰，对超声波的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的超声波，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应电力能源复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
