Ultrasonic fuel level sensor 2UF

Transcription

Ultrasonic fuel level sensor
2UF...
+ 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
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 / receiver 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 applications with large fuel capacities. The ultrasonic fuel
level sensor is mounted in the tank from above meaning the measurement takes place on the fluid through
the air.
Variants
For applications in vehicles, the version with fluid offers the best performance. The focus tube prevents 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 medium is necessary. For convenient sealing of the flange against the tank, a suitable flat seal or O-ring
seal is available.
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
speciﬁc 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
Page 1 of 8
2UF ultrasonic level sensor... – Version 1.0
Fluid level measurement with ultrasound
The 2UF… level sensor is based on ultrasonic technology. 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 reception is then determined which allows the distance between 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 reduced. Moreover, the speed of sound is dependent on
the temperature, i.e., extreme temperatures reduce the
measurement range in which a good measurement result can be achieved.
Near the sensor there is a dead zone in which no measurement 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.
Page 2 of 8
Mechanical assembly
Version with focus tube 2UF1.....01.A00
Housing
PA12
Ø 75
Label
X1
33,4
28,9
Mounting plate
822507
1.4301
A
O-Ring seal
HNBR
Focus tube
881135003
PA Akulon FL40-HP
Vent hole
4,5 V
Measuring lenght
Installation length / Measuring depth 1.200 mm
85
Blind zone 85 mm
Flat seal
874217
NBR
0,5 V
Ø 39,4
0
-0,3
50
Connector
View “A”
AMP Superseal 1.5 Series
Housing282105-1
Terminal282105-1
Rubber seal 281934-2
1
42
4x Ø 6
3
Connector X1
12,9
Ø 65
PIN
1
2
3
Function
UB
Signal
GND
4 5°
90°
Page 3 of 8
Mechanical assembly
Version without focus tube 2UF1.....01.A00
Housing
PA 12
Ø 75
Label
X1
A
33,4
28,9
Mounting plate
825507
1.4301
Blind zone 85 mm
Flat seal
874217
NBR
Ø 29,3
Installation length / Measuring depth max. 800 mm
Ø 36,4
Measuring lenght 715 mm
4,5 V
0,5 V
50
Connector
View “A”
3
1
Stecker / connector
Stecker
X1 / connector X1
Housing282105-1
Ansicht / view "A"
Ansicht / view "A"
Terminal282105-1
Rubber seal 281934-2
42
4x Ø 6
12,9
Ø 65
AMP Superseal
3 1.5 Series
Housing
282105-1
Housing
282105-1
Terminal
282109-1
Terminal
282109-1
Connector
X1 Rubber seal 281934-2
Rubber
seal 281934-2
13
Stecker / connector X1Stecker / connector X1
PIN
PIN
1
1
2
2
3
3
Function
Funktion / function
PIN
UB
UB
1
Signal
Signal
2
GND
GND
3
Funktion / function
UB
Signal
GND
4 5°
90°
Page 4 of 8
1
Installation dimensions
Assembly type
Installation from above
Mounting
4 x 6 mm through-hole
VA 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 70
Flat seal NBR 70 (included standard)
Connection
AMP Superseal, 1.5 3-pin
Key electrical data
Operating voltage
8…36 V
Current consumption
Approx. 20 mA (plus output current)
Output
0.5 V…4.5 V; 4 mA…20 mA
Key mechanical 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 13309
ISO 13766
DIN EN 14982
Page 5 of 8
Other technical data
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
Installation lengths dependent on incline and temperature
Maximum installation lengths with 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
Maximum installation length without focus tube
Page 6 of 8
Specification of your ultrasonic fuel level sensor
Blind zone
from sealing
surface
85 mm
0
A00
Installation length from sealing surface
Installation length from sealing
surface in mm
Output signal
1
Current output 4 mA…20 mA
7
Voltage output 0.5 V…4.5 V
Focus tube
Measurement length
Installation length / Measuring depth from sealing surface
(max. 1,200 mm, see page 5)
2UF1
0
Without focus tube
1
With focus tube, material PA 6,
Akulon Fuel Lock
Sealing type
A
Flat seal material NBR
B
Flat seal material FKM
C
O-ring material NBR
D
O-ring material FKM
Page 7 of 8
Fax: +49 (0) 7561 970-100
E-Mail: info@elobau.de
Your product inquiry
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Notes, questions, other
Page 8 of 8

Ultrasonic fuel level sensor 2UF

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