Measuring fuel level

[anlo007]

There is a US-Sensor available from "Pepperl+Fuchs". It is listed in the CONRAD catalog in the range 30-500 mm for 224,00€ (Analog-Output) 15 61 54-18 (or 15 61 55-18 in 0-10V)

or 15 61 62-18 60-2000 mm 174,00€

We used to use the Siemens, so i have no expierience with the Pepperl + Fuchs units.

[Warichet]

There is a US-Sensor available from "Pepperl+Fuchs". It is listed in the CONRAD catalog in the range 30-500 mm for 224,00€ (Analog-Output) 15 61 54-18 (or 15 61 55-18 in 0-10V)
or 15 61 62-18 60-2000 mm 174,00€

Thank you for the pointers.
I managed to find your references at conrad.de (nothing at conrad.fr).
I noticed price differences relative to your indication, i.e.
276 instead of 224€
214 instead of 174€
Are you using an old catalogue or did I miss something ?

Thanks again

[anlo007]

sorry it was the catalog 2009

[Warichet]

Here are the specs for model Ultraschall-Sensor

UB2000-F42-I-V15 214€

Looks fine, except the price

Allgemeine Daten

Erfassungsbereich 60 ... 2000 mm

Einstellbereich 90 ... 2000 mm
Blindzone 0 ... 60 mm
Normmessplatte 100 mm x 100 mm
Wandlerfrequenz ca. 175 kHz
Ansprechverzug ca. 150 ms

Anzeigen/Bedienelemente

LED grün permanent grün: Power on

LED gelb permanent: Objekt im Auswertebereich
blinkend: Lernfunktion
LED rot Normalbetrieb: "Störung"
Lernfunktion: kein Objekt erkannt

Elektrische Daten

Betriebsspannung 10 ... 30 V DC , Welligkeit 10 %

SS

Leerlaufstrom I

0 ≤ 50 mA

Ein-/Ausgang

Synchronisation bidirektional

0-Pegel: -U

B...+1 V

1-Pegel: +4 V...+U

B

Eingangsimpedanz: > 12 K

Ω

Synchronisationsimpuls:

≥ 100 μs, Synchronisationsimpulspause: ≥ 2 ms

Synchronisationsfrequenz

Gleichtaktbetrieb

≤ 30 Hz

Multiplexbetrieb

≤ 30/n Hz, n = Anzahl der Sensoren

Ausgang

Ausgangstyp 1 Analogausgang 4 ... 20 mA

Voreinstellung Auswertegrenze A1: 90 mm , Auswertegrenze A2: 2000 mm , breite Ultraschallkeule
Auflösung 0,7 mm
Kennlinienabweichung ± 1 % des Endwertes
Reproduzierbarkeit ± 0,1 % des Endwertes
Lastimpedanz 0 ... 300

Ω

Temperatureinfluss ± 1 % des Endwertes

Normenkonformität

Normen EN 60947-5-2

Umgebungsbedingungen

Umgebungstemperatur -25 ... 70 °C (248 ... 343 K)

Lagertemperatur -40 ... 85 °C (233 ... 358 K)

Mechanische Daten

Schutzart IP65

Anschluss Gerätestecker V15 (M12 x 1), 5-polig
Material
Gehäuse ABS
Wandler Epoxidharz/Glashohlkugelgemisch; Schaum Polyurethan, Deckel PBT

Masse 140 g

I dindn't see a word about the beam angle, or width of the beam at a distance of 2m ?? (don't want to be catched twice for the same thing)

Here are the full specs, anyone having a sharper eye than mine ?

Recalling my basic math skills, ouch, so long ago ..... tan 20° (10° each side of the center line) would yield a total width of 72cm @2m, is that correct ?
So I need a beam angle much narrow than 20°.

It's not KNX being a problem, but the sensors

[netzkind]

Try the producers website: Pepperl+Fuchs - Détecteurs et interfaces pour l'industrie - PC ATEX - Panels PC - Bus de terrain (yeah, it's available in french).

I have found detailed specs as PDF on their site - however deep-linking did not work for me with their site, so you have to search on your own (keyword search yielded the perfect result for me).

Best,
Julian

[anlo007]

If says a "breite Ultraschallkeule" that is a wide angle beam. May be a problem in your installation.


An other way of solving your problem would be using an old fashion swimmer type of level gauge which hangs on a thin wire(rope) and goes via a spindle onto a pointer. If you fix a potentiometer to this spindel you get a changing resistant, which you can give onto a 0-10V input and calculate the hight from there. It is a bit more work but quite cheap.

[anlo007]

Another type is "Magnetostriktiver Füllstandsmesser NMT " from kobold.com

or NM ex

but I have no idea, what the price is....

[Warichet]

@netzkind
Thank you for the pointer
About the specs, I haven't found much more than what I already had.

@anlo007

If says a "breite Ultraschallkeule" that is a wide angle beam.

OK, let's forget about it.

Another type is "Magnetostriktiver Füllstandsmesser NMT " from kobold.com

Fine, I'm investigating (with little hope)

[makki]

I guess I would have read totally different comments if the test had been successfull .
Also, the sensor is not appropriate for a "narrow" tank (70cm), but I'm pretty sure it works file for a "fat" tank,

Maybe also I'd guess if you don't need "close up" the single-transducer Model like SRF02 work like a charm here (ok, the salty air might really kill it somewhen soon, but I'd rather have 10 spare-units of these then one from Beeperle&Siemens)

?!? it's broken ?!?

Somehow,yes, but I also have to admit that I was too lazy to send it in during the last 6 months. It just reports (quite linear) 0,5m too much, I did a substraction in HS, done Ok, thats no solution

Makki

[anlo007]

@Warichet

I found another new Product from IFM, which might be interesting for you, if you haven´t solved the problem yet:

http://www.ifm.com/ifmde/web/ps!select2_20_10_20.html

[Warichet]

I found another new Product from IFM, which might be interesting for you

Thank you for sharing the link. I'll have a close look at it

if you haven´t solved the problem jet

No, not really .... if you look at the archive about the fuel height

[anlo007]

Sorry, I only saw the different type of measuring, which looks very interesting.

[Warichet]

http://www.ifm.com/ifmde/web/ps!select2_20_10_20.html

I don't understand this page very well
Can you help me please ?
Maybe pointing me to the datasheet of the product ?

Thank you

[anlo007]

I was out the last days, here the datatsheet

[Warichet]

here the datatsheet

Looks fine

The doc says "Öl" I guess it means "diesel" "fuel" ?
The interface is OK for KNX.
The nice thing, this Koaxialrohre will fit in any tank (no problem for narrow tank )

I see the device has a display, typical for industrial devices, so I guess it is an expensive stuff ?

Any means to get an idea of the price ? In my case, with Koaxialrohre, 1,6m

Thank you for your time & trouble