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Prosonic S FDU91/92/93/95/96

4

E Hauser

Input

Measuring range

The effective range of the sensors is dependent on the operating conditions. To estimate the range, proceed as 
follows (see also the example):

1.

Determine which of the influences shown in the following table are appropriate for your process.

2.

Add the corresponding attenuation values.

3.

From the total attenuation, use the diagram to calculate the range.

Fluid surface

Attenuation

calm

0 dB

waves

5 ... 10 dB

strong turbulence (e.g. stirrers)

10 ... 20 dB

foaming

ask Hauser

Bulk material surface

Attenuation

hard, rough (e.g. rubble)

40 dB

soft (e.g. peat, dust-covered clinker)

40 ... 60 dB

Dust

Attenuation

no dust formation

0 dB

little dust formation

5 dB

heavy dust formation

5 ... 20 dB

Filling curtain in detection range

Attenuation

none

0 dB

small quantities

5 dB

large quantities

5 ... 20 dB

Temperature difference between 
sensor and product surface

Attenuation

to 20 °C

0 dB

to 40 °C

5 ... 10 dB

to 80 °C

10 ... 20 dB

L00-FDU9xxxx-05-00-00-xx-001

A:

 Attenuation (dB); 

R:

 Range (m)

Example

• Silo with rubble:

~ 40dB

• small quantities of

filling curtain: 

~  5dB

• little dust: 

~  5dB

total: ~ 

50dB

=> Range approx. 8 m

for FDU92

0

20

40

60

80

100

110

45

70

25

20

10

0

FDU 95

FDU 96

FDU 93

FDU 92

FDU 91

A [dB]

R [m]

Содержание Prosonic S FDU91

Страница 1: ...Suited for explosion hazardous areas Your benefits Non contact measurement method therefore almost independent of product properties Integrated temperature sensor for time of flight correction Accurat...

Страница 2: ...hock resistance 11 Electromagnetic compatibility 11 Process conditions 11 Process temperature Process pressure 11 Mechanical construction 12 Dimensions 12 Weight 12 Materials 13 Connecting cable 13 Ce...

Страница 3: ...volume V flow Q across measuring weirs or open channels Time of flight correction In order to compensate for temperature dependent time of flight changes a temperature sensor is integrated in every se...

Страница 4: ...ming ask Endress Hauser Bulk material surface Attenuation hard rough e g rubble 40 dB soft e g peat dust covered clinker 40 60 dB Dust Attenuation no dust formation 0 dB little dust formation 5 dB hea...

Страница 5: ...uency Output Signal transmission analogue voltages Auxiliary energy Power supply via transmitter FMU90 Sensor Operating frequency FDU91 43 kHz FDU92 30 kHz FDU93 27 kHz FDU95 1 low temperature version...

Страница 6: ...n cable are not supplied Caution If the terminal box is installed in explosion hazardous areas then all national guidelines applicable must be observed Caution The cable screen serves as a return cabl...

Страница 7: ...be used for zone separation C with a 1 sleeve welded to a grating L00 FDU9xxxx 17 00 00 xx 007 A Installation with cantilever and wall bracket B Installation with cantilever and mounting frame C The...

Страница 8: ...ts through the filling curtain 3 Make sure that equipment 4 such as limit switches temperature sensors baffles etc are not located within the emitting angle Emitting angles of the individual sensors a...

Страница 9: ...d joints In particular there should be no burr on the inside of the tank side nozzle end Note the specified limits for nozzle diameter and length To minimise disturbing factors we recommend an angled...

Страница 10: ...nce of the channel or weir 1 Use a protective cover in order to protect the sensor from direct sun or rain A protective cover is available for the sensor FDU91 see chapter Accessories Example Khafagi...

Страница 11: ...terference immunity to EN 61326 Appendix A Industrial Process conditions Process temperature Process pressure In narrow shafts with strong interference echoes we recommend using an ultrasound guide pi...

Страница 12: ...DU90xxx 06 00 00 xx 001 Dimensions in mm Weight 154 ca 450 30 198 FDU96 230 110 20 70 FDU91 G1 NPT1 G1 NPT1 125 20 98 FDU92 G1 NPT1 235 25 FDU95 G1 NPT1 145 187 25 FDU93 G1 NPT1 Sensor Weight FDU91 ap...

Страница 13: ...ntrol or installation drawings ZD External standards and guide lines EN 60529 Protection class of housing IP code EN 61326 Electromagnetic compatibility EMC requirements NAMUR Standards committee for...

Страница 14: ...variable length up to 300 m A ft variable length up to 985 ft 035 Heater A w o heater B Connection to 24 VDC in preparation 040 Additional option A Basic version FDU91 product designation 010 Approva...

Страница 15: ...e length up to 300 m A ft variable length up to 985 ft 040 Additional option A Basic version FDU93 product designation 010 Approval R Non hazardous area E ATEX II 1 2 D H ATEX II 3D P FM Cl II Div 1 G...

Страница 16: ...I Div 1 Gr E G NT Ambient temperature 40 80 C 176 F in preparation T CSA Cl I II III Div 1 Gr E G HT Ambient temperature 40 140 C 284 F in preparation P FM Cl I II III Div 1 2 Gr A G HT Ambient temper...

Страница 17: ...erature sensor e g FMT131 The cantilever can be mounted in the following ways by a mounting frame see below by a wall bracket see below Fixing screws are supplied Material PVDF Order code 52025686 L00...

Страница 18: ...aterial Order Code 700 mm galv steel 919791 0000 700 mm 1 4301 AISI 304 919791 0001 1400 mm galv steel 919791 0002 1400 mm 1 4301 AISI 304 919791 0003 3 2 20 55 100 25 700 1400 45 76 100 200 6 5 13 33...

Страница 19: ...re C An O ring in the spherical joint seals from the process D Grounding can be performed directly at the grounding screw D The alignment unit can be rotated up to 15 For further information see Techn...

Страница 20: ...quired for a standard measuring task Additional functions are contained in the Descripiton of Instrument Functions BA 290F Description of Instrument Functions for transmitter FMU90 BA290F contains a d...

Страница 21: ...Prosonic S FDU91 92 93 95 96 Endress Hauser 21...

Страница 22: ...l Head Quarter Endress Hauser GmbH Co KG Instruments International Colmarer Str 6 79576 Weil am Rhein Deutschland Tel 49 76 21 9 75 02 Fax 49 76 21 9 75 34 5 www endress com info ii endress com TI396F...

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