ultrasonic fuel level sensor 2uf - elobau.com · nbr 28,9 installation length / measuring depth...

The relevant corresponding technical documents will be supplied with the product. Certain product descriptions can be similar therefore please ensure that you have the latest version of documentation for your

specifi c product prior to any use. elobau reserves the right to change technical data and documentation without notice.elobau GmbH & CO. KG | Zeppelinstr. 44 | 88299 Leutkirch | Germany | +49 (0) 7561 970-0 +49 (0) 7561 970-100 | www.elobau.com

2UF ultrasonic level sensor... – Version 1.0 of 8

For applications in vehicles, the version with fluid offers the best performance. The focus tube pre-vents the signal from being negatively influenced by unsettled media surfaces. Furthermore, the focus tube also increases the maximum achievable measurement length. For applications in level and stationary containers, the sensor can be used without a focus tube meaning no contact with the me-dium is necessary. For convenient sealing of the flange against the tank, a suitable flat seal or O-ring seal is available.

+ Contactless fluid level measurement

+ Space-saving design

+ No moving parts

+ High reliability and long service life thanks to contactless ultrasonic technology

+ Available with and without focus tube

+ Analogue current/voltage output signal

+ Suitable for the harshest of environments due to its IP67 protection class

+ Extreme operating temperature range from -40° to +105°C

+ EMC resistance in accordance with DIN EN 13309, ISO 13766, DIN EN 1498

Use

Variants

Ultrasonic fuel level sensor 2UF...

The ultrasonic fuel level sensor was specially developed for use in diesel and biodiesel, but can also be used in many other media. Due to its wear-free transmitter / re-ceiver principle, this sensor has a long service life. It can also be used in harsh environmental conditions thanks to its IP67 protection class. With installation lengths of up to 1,200 mm, this fuel level sensor is suitable for ap-plications with large fuel capacities. The ultrasonic fuel level sensor is mounted in the tank from above mean-ing the measurement takes place on the fluid through the air.




Fluid level measurement with ultrasound

The 2UF… level sensor is based on ultrasonic technolo-gy. Ultrasonic waves are emitted and reflected by the surface of the medium that is to be measured. These reflected ultrasonic waves are detected by the sensor. The time that elapses between transmission and recep-tion is then determined which allows the distance be-tween sensor and media surface to be calculated. The measurement of the fluid level using ultrasound is one of so-called transit-time methods.

The ultrasonic waves spread in a conical shape. As the slope relative to vertical increases, the strength of the received ultrasonic waves decreases. By using a focus tube, the sound waves are guided and this effect re-duced. Moreover, the speed of sound is dependent on the temperature, i.e., extreme temperatures reduce the measurement range in which a good measurement re-sult can be achieved.

Near the sensor there is a dead zone in which no meas-urement can be performed. This area, referred to as a blind zone, occurs because the sensor is still in transmit mode when the reflected ultrasonic waves are received.




Mechanical assembly

Version with focus tube 2UF1.....01.A00

Ø 75 Label

O-Ring sealHNBR

4,5 V

X1

A

0,5 V

Ø 39,4 0-0,3

50

90°

HousingPA12

Mounting plate8225071.4301

Flat seal874217NBR

28,9

Inst

alla

tion

leng

th /

Mea

surin

g de

pth

1.20

0 m

m Blin

d zo

ne 8

5 m

mM

easu

ring

leng

ht

Vent hole

33,4

85

Focus tube881135003PA Akulon FL40-HP

4x Ø 6

Ø 65

12,9

42

45°

ConnectorView “A”

3 1AMP Superseal 1.5 SeriesHousing 282105-1Terminal 282105-1Rubber seal 281934-2

Connector X1

PIN Function1 UB2 Signal3 GND

1AMP Superseal 1.5 SeriesHousing 282105-1Terminal 282109-1Rubber seal 281934-2

Stecker / connector X1Ansicht / view "A"

3

Stecker / connector X1PIN Funktion / function

1 UB2 Signal3 GND

1AMP Superseal 1.5 SeriesHousing 282105-1Terminal 282109-1Rubber seal 281934-2

Stecker / connector X1Ansicht / view "A"

3

Stecker / connector X1PIN Funktion / function

1 UB2 Signal3 GND




Ø 75

Ø 29,3

Ø 36,4

Housing PA 12

Mounting plate8255071.4301 28

,9

33,4

Label

4,5 V

A

0,5 V

Blin

d zo

ne 8

5 m

m

Inst

alla

tion

leng

th /

Mea

surin

g de

pth

max

. 800

mm

Mea

surin

g le

nght

715

mm

50

90°

4x Ø 6

Ø 65

12,9

42

45°

X1

Mechanical assembly

Version without focus tube 2UF1.....01.A00

ConnectorView “A”

3 1AMP Superseal 1.5 SeriesHousing 282105-1Terminal 282105-1Rubber seal 281934-2

Connector X1

PIN Function1 UB2 Signal3 GND

Flat seal874217NBR




Installation dimensions

Key mechanical data

Key electrical data

Working temperature range -40…+105°C

Storage temperature range -40…+105°C

Protection class Upper housing part: IP 67 DIN EN 60529 / IPX9K acc. to ISO 20653

EMC resistance DIN EN 13309ISO 13766DIN EN 14982

Operating voltage 8…36 V

Current consumption Approx. 20 mA (plus output current)

Output 0.5 V…4.5 V; 4 mA…20 mA

Assembly type Installation from above

Mounting 4 x 6 mm through-holeVA mounting plate (included standard)

Max. tightening torque 2 Nm (tighten screws crosswise)

Bolt circle 65 mm

Recommended mounting opening

Ø 39.9 mm with 4 x 45° phase (Phase only necessary with O-ring seal)

Diameter of focus tube Approx. 39.4 mm

Head height without seal Approx. 34 mm

Total diameter 75 mm

Seal O-ring NBR 70 O-ring FKM 70 Flat seal FKM 70Flat seal NBR 70 (included standard)

Connection AMP Superseal, 1.5 3-pin




Other technical data

Installation lengths dependent on incline and temperature

Maximum installation lengths with focus tube

Maximum installation length without focus tube

Total operating temperature range -40°…+105°C

Limited operating temperature range -40°...+85°C

Ideal operating temperature range 0°…+55°C

0° incline 1,200 mm 1,500 mm 1,800 mm

5° incline 900 mm 1,100 mm 1,250 mm

10° incline 500 mm 600 mm 700 mm

Total operating temperature range -40°…+105°C

Limited operating temperature range -40°...+85°C

Ideal operating temperature range 0°…+55°C

0° to 5° incline 800 mm 1,000 mm 1,100 mm

10° incline 150 mm 200 mm 300 mm

Measurement accuracy ± 8 mm

Resolution 1 mm

Repeating accuracy ± 2 mm

Measurement length from sealing surface

85…1,200 mm with focus tube

Blind zone from sealing surface

85 mm (other values on request)

Place of installation Max. measurement angle to medium surface 10°

Output signal Averaged over 20 seconds (other times on request)

Operating frequency Approx. 135 kHz

Reverse connection protected

Yes




Specification of your ultrasonic fuel level sensor

Sealing type

A Flat seal material NBR

B Flat seal material FKM

C O-ring material NBR

D O-ring material FKM

Focus tube

0 Without focus tube

1With focus tube, material PA 6, Akulon Fuel Lock

Output signal

1 Current output 4 mA…20 mA

7 Voltage output 0.5 V…4.5 V

Mea

sure

men

t le

ng

th

Inst

alla

tio

n le

ng

th /

Mea

suri

ng

dep

th f

rom

sea

ling

su

rfac

e

(m

ax. 1

,20

0 m

m, s

ee p

age

5)

Blin

d z

on

e fr

om

sea

ling

su

rfac

e 85

mm

Installation length from sealing surface

Installation length from sealing surface in mm

2UF1 0 A00




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ultrasonic fuel level sensor 2uf - elobau.com · nbr 28,9 installation length / measuring depth...

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