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非接触式连续测量物位和流量的超声波探头
与FMU90/FMU95变送器配套使用
优点
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非接触式测量方法; 降低了维护需要
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集成温度探头用于校正超声波运行时间。即便处于温度变化的环境之中，也可得到准确的测量结果.
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PVDF密封焊接的探头，具有极高的抗化学腐蚀能力
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FMU90 /FMU95变送器能自动识别探头类型，因此调试十分简单
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探头和变送器能分离安装，最长间距达300m
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探头可与变送器分离进行安装，能适应恶劣的外部工作环境
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探头的自清洗功能有效地降低了粘附现象发生的可能性
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探头配备的一体化加热器用于防止探头表面结冰（可选），以确保可靠测量
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抗侵蚀，防水型 (IP68)
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通过粉尘防爆(Dust-Ex)认证和气体防爆(Gas-Ex)认证(ATEX, FM, CSA, TIIS)
应用领域
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对液体，糊状物，浆料，粉料及表面粗糙的固体块状物进行连续的非接触式物位测量
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对明渠和测量堰进行流量测量
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最大测量范围:
液体： 10m
块料： 5m -
适用于爆炸危险区域
其他测量范围:
- FDU92:
液体：20m
块料：10m - FDU93:
液体：25m
块料：15m - FDU95:
块料：45m - FDU96:
块料：70m
技术参数
Continuous / Liquids
Continuous / Solids
Liquids
测量原理
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
(-40 °F ... 176 °F)
Process temperature
-40 °C ... 80 °C
(-40 °F ... 176 °F)
Process pressure absolute / max. overpressure limit
0.7 bar ... 4 bar abs
(10 psi ... 58 psi)
Main wetted parts
PVDF (fully welded IP68 / NEMA6P)
Process connection
G / NPT 1"
Blocking distance
0.3 m (1 ft)
Max. measurement distance
10 m (33 ft)
Output
Transmitter:
4 ... 20 mA HART
Profibus DP
Certificates / Approvals
ATEX
FM
CSA
TIIS
IECEx
Options
Second 4...20mA output
Application limits
Foam / high turbulence possible:
FDU92
Flange-flush assembly:
FDU91F
For tank farms scanner:
FMU95
Components
Transmitter:
FMU90, FMU95
| 测量原理 | 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 (-40 °F ... 176 °F) | |
| Process temperature | -40 °C ... 80 °C (-40 °F ... 176 °F) | |
| Process pressure absolute / max. overpressure limit | 0.7 bar ... 4 bar abs (10 psi ... 58 psi) | |
| Main wetted parts | PVDF (fully welded IP68 / NEMA 6P) | |
| Process connection | G / NPT 1" | |
| Blocking distance | 0.3 m (1 ft) | |
| Max. measurement distance | 5 m (16ft) | |
| Output | Transmitter: 4 ... 20 mA HART Profibus DP | |
| Certificates / Approvals | ATEX FM CSA TIIS | |
| Options | Second 4...20mA output | |
| Components | Transmitter: FMU90 | |
| 测量原理 | Ultrasonic | |
| Main features | Version with separate transmitter in field housing or top hat rail housing Cost effective solution for open channel flow measurement in water / wastewater plants | |
| Diameter | Unlimited (open channel) | |
| Measuring range | Unlimited (max measuring distance up to 10m / 32ft) | |
| Process temperature | -40...80°C (-40...176°F) | |
| Pressure range | atm. | |
| Measured error | accuracy: distance measurement: +/- 2mm + 0.17% resolution: distance measurement: 1mm | |
| Communication | Profibus DP HART | |
| Outputs | Transmitter: 4...20mA HART Option: second 4...20mA output | |
| Inputs | Transmitter | |
| Ex-Approvals | ATEX FM CSA | |
| Protection electronic | IP68 | |
| Display/Operation | Transmitter | |
| Advantages | Later installation possible Sensor self-cleaning effect Sensor submersible (IP68 / NEMA 6P) 300m distance inbetween sensor and transmitter | |
| Components | Transmitter: FMU90 | |
