RFQ

Endress+Hauer Ultrasonic measurement Time-of-Flight Prosonic FDU91F

  • NG # 006209-HW-ENDRESS-009

The FDU91F provides accurate, maintenance-free ultrasonic level and flow measurement with hygienic design options, high chemical resistance, and reliable performance in both liquid and solid applications.

Manufactured By :
Endress+Hauser
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Need Help Ordering?
Call +88 01714243446

Stock

Custom Pricing

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Overview

Designed for continuous non-contact measurement, the FDU91F ensures stable operation regardless of dielectric properties, density, humidity, or buildup. With measuring ranges up to 10m in liquids and 5m in solids, it is ideal for silos, belts, stockpiles, crushers, and open channel flow applications. Built-in temperature compensation ensures measurement accuracy, while fully welded 316L construction and Tri-Clamp hygienic process connections support the highest sanitary requirements. IP68 protection, long-distance transmitter mounting, and automatic detection with FMU90/FMU95 simplify commissioning and ensure reliable performance even in harsh environments.

Specification

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 ... 105 °C
(-40 °F ... 221 °F)

Process temperature

-40 °C ... 105 °C
(-40 °F ... 221 °F)
CIP: 30 min: 135 °C
(30 min: 275 °F)

Process pressure / max. overpressure limit

0.7 bar ... 4 bar abs
(10 psi ... 58 psi)

Main wetted parts

316L (fully welded IP68 / NEMA 6P)

Process connection

G / NPT 1", DN80 / 100, ASME 3" / 4"

Process connection hygienic

Tri-Clamp ISO2852, DN80 3 1/2", DN100 4"

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

Design approvals

EN 10204-3.1

Hygienic approvals

3A

Components

Transmitter:
FMU90, FMU95

Application limits

Foam / high turbulence possible:
FDU92
For tank farms scanner:
FMU95

CATALOGS

Ultrasonic measurement Time-of-Flight Prosonic FDU91F

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