EH Prosonic FDU90 Ultrasonic Time-of-Flight level and flow sensor for continuous and non-contact measurement (up to 10ft) with FMU9X. 4-20mA HART communication. PVDF main wetted parts. G/NPT 1 1/2" and G/NPT 1" Process Connection. IP68. ATEX, FM, CSA, INMETRO and IECEx approvals.
Part# with Options:
FDU90-RG1AA
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Options
Approval
R-Non hazardous area C-IEC Ex ta/tb IIIC Da/Db, IEC Ex ma IIC T5 Gb D-IEC Ex ma IIC T5 Gb E-ATEX II 1/2D Ex ta/tb IIIC, ATEX II 2G Ex ma IIC T5 G-ATEX II 3G Ex nA IIC T5 Gc H-ATEX II 3D Ex tc IIIC Dc J-ATEX II 2G Ex ma IIC T5 L-Non hazardous area + EAC marking Q-FM Cl.I,II,III Div.1+2 Gr.A to G, zone 1,2,21,22 S-CSA Cl.I,II,III Div.1+2 Gr.A to G zone 1,2 U-CSA General Purpose 7-INMETRO Ex ta/tb IIIC Da/Db, Ex ma IIC T5 Gb 8-INMETRO Ex ma IIC T5 Gb Y-Special version, TSP no. to be spec.
(1) Approval for EH FDU90/91/91F/92
Process Connection
G-Thread ISO228, PVDF rear side G1, front side G1 1/2 N-Thread ANSI, PVDF rear side NPT1, front side NPT1 1/2 W-Ceiling mounting front side G1 1/2 Y-Special version, TSP no. to be spec.
(2) Process Connection for EH FDU90
Cable Length
1-5m/16ft 2-10m/32ft 3-15m/49ft 4-20m/65ft 5-25m/82ft 6-30m/98ft 9-Special version, TSP no. to be spec.
(3) Cable Length for EH FDU90
Heater
A-W/o B-Connection to 24VDC Note Technical Information FMU90! Y-Special version, TSP no. to be spec.3 to 15m/49ft
(4) Heater for EH FDU90/91
Additional Option
A-Basic version B-Flooding protection tube L-5 point linearity protocol M-Product documentation on paper, 5 point linearity protocol Y-Special version, TSP no. to be spec.3 to 15m/49ft
(5) Additional Option EH FDU90
Field of application
Continuous, non-contact level measurement of fluids and bulk material in silos, on belts, stockpiles and in crushers
Flow measurement in open channels and at weirs
Maximum measuring range
FDU90: 3 m (9.8 ft) in fluids. 1.2 m (3.9 ft) in bulk materials
FDU91/FDU91F: 10 m (33 ft) in fluids. 5 m (16 ft) in bulk materials
FDU92: 20 m (66 ft) in fluids. 10 m (33 ft) in bulk materials
FDU93: 25 m (82 ft) in fluids. 15 m (49 ft) in bulk materials
FDU95: 45 m (148 ft) in bulk materials
International explosion protection certificates
Benefits
Integrated temperature sensor for Time-of-Flight correction. Accurate measurements are possible, even if temperature changes are present
Hermetically welded PVDF sensors FDU91/92 for highest chemical resistance
Suited for rough ambient conditions thanks to separate installation from the transmitter (up to 300 m (984 ft))
Reduced build-up formation because of the self-cleaning effect
Weather resistant and flood-proof (IP68)
Dust-Ex and Gas-Ex certificates available
Measuring principle
The sensor transmits ultrasonic pulses in the direction of the product surface. There, they are reflected
back and received by the sensor. The transmitter Prosonic S measures the time t between pulse
transmission and reception. From t (and the velocity of sound c) it calculates the distance D from the
reference point to the product surface.
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