Endress+Hauser Prosonic FDU91
Ultrasonic measurement Time-of-Flight
Ultrasonic measurement Time-of-Flight
Process temperature-40 В°C ... 80 В°C
(-40 В°F ... 176 В°F)
0.7 bar ... 4 bar abs
(10 psi ... 58 psi)
5 m (16ft)
Accuracy+/- 2mm + 0.17% of measured distance
Main wetted partsPVDF (fully welded IP68 / NEMA 6P)
- Overview
- Comments
Ultrasonic level and flow sensor Prosonic S FDU91. Continuous measurement method. For connection to Prosonic S FMU90/FMU95 transmitter. It has a built-in temperature sensor to correct the signal's time of flight.
Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range up to 10m).
Measuring principleUltrasonic
Characteristic / ApplicationSeparated version with field housing or top hat rail housing for control cabinet instrumentation, 300m in-between sensor and transmitter
Supply / Communication4-wire (HART , Profibus DP)
Accuracy+/- 2mm + 0.17% of measured distance
Ambient temperature-40 В°C ... 80 В°C
(-40 В°F ... 176 В°F)
-40 В°C ... 80 В°C
(-40 В°F ... 176 В°F)
0.7 bar ... 4 bar abs
(10 psi ... 58 psi)
PVDF (fully welded IP68 / NEMA 6P)
Process connectionG / NPT 1"
Blocking distance0.3 m (1 ft)
Max. measurement distance5 m (16ft)
CommunicationTransmitter:
4 ... 20 mA HART
Profibus DP
ATEX, FM, CSA, IEC Ex, JPN Ex, INMETRO, NEPSI, EAC Ex
OptionsSecond 4...20mA output
ComponentsTransmitter:
FMU90
Ultrasonic
Product headlineVersion with separate transmitter in field housing or top hat rail housing
Cost effective solution for open channel flow measurement in water / wastewater plants
accuracy:
distance measurement: +/- 2mm + 0.17%
resolution:
distance measurement: 1mm
max measuring distance up to 10m / 32ft
Max. process pressureatm.
Medium temperature range-40...80В°C
(-40...176В°F)
IP68
Display/OperationTransmitter
OutputsTransmitter:
4...20mA HART
Option: second 4...20mA output
Transmitter
Digital communicationHART, PROFIBUS DP
Hazardous area approvalsATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, EAC Ex
Measuring principleUltrasonic
Characteristic / ApplicationSeparated version with field housing or top hat rail housing for control cabinet instrumentation, 300 m in-between sensor and transmitter
Supply / Communication4-wire (HART, Profibus DP)
Accuracy+/- 2 mm + 0.17% of measured distance
Ambient temperature-40 В°C ... 80 В°C
(-40 В°F ... 176 В°F)
-40 В°C ... 80 В°C
(-40 В°F ... 176 В°F)
0.7 bar ... 4 bar abs
(10 psi ... 58 psi)
PVDF (fully welded IP68 / NEMA6P)
Process connectionG / NPT 1"
Blocking distance0.3 m (1 ft)
ApplicationApplication
Max. measurement distanceMax. measurement distance
CommunicationTransmitter:
4 ... 20 mA HART
Profibus DP
ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, EAC Ex
OptionsSecond 4...20 mA output
ComponentsTransmitter:
FMU90, FMU95
Application limits
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