Endress+Hauser FDU91-RN3AA1

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
(-40 °F … 176 °F)
Process temperature

-40 °C … 80 °C
(-40 °F … 176 °F)
Process pressure / 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

Liquids: 10 m (33 ft),
Solids: 5 m (16 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
Application limits

Foam / high turbulence possible:
FDU92
Flange-flush assembly:
FDU91F
For tank farms scanner:
FMU95

Weight	1.5 kg

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