switch measure control

24 Pages·2004·3.37 MB·English

LEVEL
Tank Level Indicating Systems
Also available with
Ex-Approval
control
switch
measure
Tank Level Indicating Systems
Introduction Applications ......................................................................3
Operation, safety switching function, accuracy .................4
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Installation, maintenance, technical advantages ..............5 01/
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Overview ......................................................................6 - 7 LI
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Tank Level Indicating Systems in Brass
or Stainless Steel
Type USE 3000 Technical data, electrical connection ..............................P1
Dimensions, order numbers ...........................................P2
Type USE 6000 Technical data, electrical connection ..............................P3
Dimensions, order numbers ...........................................P4
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Tank Level Indicating Systems in Stainless Steel c
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with Ex-approval for Category 1 el I
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Type USE 3200 Technical data, electrical connection ..............................P5 e
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Dimensions, order numbers ...........................................P6 d
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Type USE 6200 Technical data, electrical connection ..............................P7
Dimensions, order numbers ...........................................P8
Accessories Type UAS 3 - V3 Trip amplifier and indicating instrument ................P9 - P10 e.
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Type MU3L R / I Transducer ............................................................P11 ut
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Type MUEX Ex-Transducer ..............................................................P12 s wit
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Information Catalog Overview, Fax Order Form ................................20 ect t
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Important: fi
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Specifications are subject to modification at any time
without prior notice.
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Tank Level Indicating Systems
Applications The Barksdale Tank Level Indicating Systems are sensors for remote
indication level of liquid media.
They operate according to the float principle with magnetic trans-mission
(Permanent magnet, Reed switch and resistor chain). The liquid level is
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01/ indicated on indicating instruments connected to the sensor.
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4 Typical Applications for Tank Level Indicating Systems:
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Waste water and sewage plants, filling and charging containers, heating
oil tanks, remote level indication for rivers, canals and basins, radioactive
fluids, tank trucks, drinking water and fuel containers for tanks or motor
ships, trim and ballast tanks of oil rigs and submarines, interfacial level
indicator for fluid of different densities as well as path sensing elements
for indication and control of stroke movements e. g. of hydraulic and
pneumatic cylinders.
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Reed switch
with resistor
chain
Magnet
Float
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Fig. 1
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Tank Level Indicating Systems
Operation
The stem contains a full length internal network tapped by magnetically
To display
actuated Reed switches mounted at 6,4 mm intervals. A constant voltage
BN GN WN
across the resistance forms the voltage divider network. Tap switches
Signal
Reed contact chain are connected to a common conductor via series resistors to the receiver 1
meter and are actuated by bar magnets within the float as is traverses 1/
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the transmitter stem. The float varies the tap point on this voltage divider US
by raising and falling with liquid level. LI
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All wetted parts are made of stainless steel or brass and are available 2 /
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with various mounting elements.
The standard float material is Cr-Ni-steel (1.4571, 1.4408)
PVC or brass are also available on request.
Fig. 2 shows the electrical operation of the Barksdale Tank Level Indica-
Voltage conductor
ting Systems.
resistor
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Safety Switching Function m
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Magnetic reed switches are tapped into a voltage divider resistance at g
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6,4 mm intervals within the transmitter and connected to a remote indi- ati
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cating meter. ndi
The magnet-equipped float closes these switches in a „2-3-2“ sequence el I
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as it moves as shown in Fig. 3. When two switches are closed, the effec- L
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tive tab point is halfway between the two. When the float moves another an
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6,4 mm and closes the next switch, while holding the first closed, the e
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effective tap point is at the middle switch of the three and one 3,2 mm d
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from the first tab point. Therefore, a voltage is read at the meter for each ar
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6,4 mm of float travel.
Contacts Contacts Contacts
1 + 2 1,2 + 3 2 + 3
closed closed closed
Fig. 3
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Transmitter Accuracy Depending on requirements and model different screen sizes are availab- ut
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le: with
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R12 - (1/4“ = 6,4 mm), accuracy appr. 0.2% at 3000 mm - standard ng
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R08 - (1/6“ = 4,2 mm), accuracy appr. 0.1% at 3000 mm - on request ch
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The measuring accuracy of the level sensor can be calculated by using ect t
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the following formula in accordance to the measuring length: u
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( S c r e e n ± 5 m m ) ati
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± x 100% ci
Measuring length Lm pe
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6,4 mm
e. g.: ± x 100% = 0,64%
1000 mm
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Tank Level Indicating Systems
Installation and Maintenance
The transmitters can be installed from outside through the tank top or
tank bottom by using a mounting plug or flange.
The mounting position is vertical with a maximum angle of inclination of
30 degrees.
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US mm The level sensor and additional instruments are maintenance free in ap-
LI 2341 plications in clean media. The maintenance of the level sensor consists
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4 of an occasional „wipe-off“ cleaning from time to time in excessively con-
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2 / taminated liquids.
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For the sensor connection shielded cable or wiring is recommended but
not necessary.
The level sensors are available with terminal box, plug or PVC-cable.
If the distance between sensor and display exceeds 15 m, a 4...20 mA
2-wire connection should be used for signal transmission (please see
also page 18 / 19: Transducer).
The cable length between sensor and receiver can be up to five kilom-
eters using a transducer, depending on the cable diameter.
Fig. 4 shows a typical application with pump control, additional display
and recorder.
Fig. 4
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Tan Technical Advantages  Constant level monitoring with <0,5 mm repeatability.
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ar  Independent on foam formation, variable dielectric, conductivity,
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pressure and temperature of the liquid.
 Remote level indication via extremely long cables between level
indicating system and level sensing element (container).
 Interfacial level indication possible by different float weights.
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out  Linear level indication independent of the shape of the container
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o c  The level sensors can be inserted in protection and bypass tubes in
ct t extremely turbulent or contaminated liquids.
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ati emptying the container.
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 Dotted line recorders, trip amplifiers and other additional instru-
ments can be connected to the level indicating system with analog
output.
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Tank Level Indicating Systems
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Model USE 3000 USE 6000
Total Length L max. 3000 mm max. 6000 mm
0
Mounting Position from top / from bottom ±30° from top / from bottom ±30°
Material Brass Stainless Steel 1.4571/ 1.4404
Stainless Steel 1.4571/ 1.4404
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Mounting Elements Tank screw G 2 Tank screw G 2 oti
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DIN flange DN 65 / PN 16 DIN Flange DN 125 / PN 16 ut
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Float VA44, Ø 44 mm wit
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VA52, Ø 52 mm VA100, Ø 105 mm BN 42, Ø 42 mm e
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VA80, Ø 82 mm an
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Min. Density g/cm³ VA44: 0,9 / VA52: 0,74 / VA80: 0,5 0,62 0,55 ct t
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Max. Pressure in bar VA44: 25 / VA52: 25 / VA80: 16 32 15 u
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Max. Temperature –10 °C...+90 °C - Standard –10 °C...+90 °C - Standard s
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–50 °C...+150 °C - High Temperature –50 °C...+150 °C - High Temperature atio
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Options DR - Slosh tube, DR - Slosh tube, eci
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PT-100 Element, Thermo reed, PT-100 Element, Thermo reed, S
HT-Isolation, Interfacial Level Indication HT-Isolation, Interfacial Level Indication
Approvals - - - - - -
Catalog Page P1 - P2 P3 - P4
6
Tank Level Indicating Systems
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Model USE 3200 USE 6200
Total Length L max. 3000 mm max. 6000 mm
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Mounting Position from top / from bottom ±30° from top / from bottom ±30°

Material Stainless Steel 1.4571/ 1.4404 Stainless Steel 1.4571/ 1.4404
e. Mounting Elements Tank screw G 2 Tank screw G 2
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oti DIN flange DN 65 / PN 16 DIN Flange DN 125 / PN 16
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ho Float VX44, Ø 44 mm
wit VX52, Ø 52 mm VX100, Ø 105 mm BN 42, Ø 42 mm
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are Max. Temperature T1...T4 up to +100 °C T1...T4 up to +100 °C
s T5 up to +65 °C T5 up to +65 °C
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atio T6 up to +50 °C T6 up to +50 °C
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eci Options DR - Slosh tube, DR - Slosh tube,
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Approvals Ex-approval Ex-approval
TÜV 01 ATEX 1717 TÜV 01 ATEX 1717
Catalog Page P5 - P6 P7 - P8
7
Tank Level Indicating Systems
USE 3000 - Level Sensor
up to 3000 mm Length
Technical Data
Max. Length L : 3000 mm
0 1
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Materials : Stainless steel (1.4571, 1.4404), brass, 0
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other material on request LI
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Mounting Element : Stainless steel (1.4571, 1.4404), 04
tank screw or flange 12 /
Stem : Stainless steel (1.4571), brass,
ø = 13 x 1 mm
Float : Stainless steel (1.4571)
- VA44, ø = 44 mm, oval
min. media density = 0,9 g/cm3
max. pressure = 25 bar
- VA52, ø = 52 mm, oval
min. media density = 0,74 g/cm3
max. pressure = 25 bar
- VA80, ø = 82 mm, ball s
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min. media density = 0,5 g/cm3 st
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max. pressure = 16 bar g
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Electrical Connection : ST1 - Cube plug DIN43650 cati
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(3-pin + earth) el In
PG - Cable gland PG 13,5 ev
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incl. 1,5 m cable nk
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KL6 - Aluminum terminal box e
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(58 x 64 x 36 mm, 3 terminals) s
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KLS - Aluminum terminal box Bar
incl. transducer MU3L
(75 x 80 x 57 mm)
Protection Class : ST1, KL6, KLS = IP65, PG = IP67
Temperature Ranges : –10 °C... + 90 °C
–50 °C...+150 °C HT - high temperature
only with KL6 or silicone cable possible
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Total Resistance : 0...100 kOhm oti
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Electrical Connections ut
Power Supply : 8 ... 35 V DC with transducer, ho
KLS 75 x 80 max. 24 V DC without transducer s wit
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Type of Screen : R12 = screen 12,7 mm (1/2“) an
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57 aapccpur.r a0c,2y% ± 6a,t4 3 m00m0 mm measuring l e ngth ct to
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Wiring : 3-wire, length up to 5000 mm e s
depending on cable diameter s ar
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KL6 like KLS, however 58 x 64 x 36 mm Options : DR - slosh tube, Pt100-element, thermo reed, atio
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SSTT11 cable 3-wire Pg HT - isolation, interfacial level indication eci
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55 Pg-
appr. ca. 5 cable gland p. 25
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Tank Level Indicating Systems
Dimensions (in mm)
KL6 64 x 58 64 x 58
1
1/ KL6
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TLI Hex36 FL4
12 / 04 G2 36 pr. 57 DDINN 6255/2 P7N 16 36 pr. 59
p p
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ø30
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G 2“ 52) 2)
( 3
(
* *
10) 0)
1 9
ng Systems VA52 ø13 LM + 6,4 L0 ±3 (min. LM + (max. 3000) VA52 ø13 LM + 6,4 L0 ±3 (min. LM + (max. 3000)
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vel In 70 * 70 *
ank Le ø52 (58) ø52 (58)
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* Immersion depth at density 1:VA52 = 36 ±2 mm, VA44 = 35 ±2 mm, VA80 = 41 ±2 mm
Order number example
Type Series Material Mounting Electrical Float Type Screen Meas. Length Options
Element Connection LM
– / – – – –
USE 3000 VA G2 KL6 VA52 R12 2000 -
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ge Material Mounting Electrical Float Type Screen Meas. Length Options
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bject t S(VtAai)n less steel (GG 22 )T ank (PSluTg1 )D IN 43650, S(VtAai5n2le) s s steel (SRta1n2d)ard xxxx (InPtTe1g0ra0t)e d tempera-
su 1.4571/ screw 3-pin + PE float (e. g.: ture measurement via
are 1.4408 (PG) ø52 mm (R08) 2 m = 2000) Pt100-element
s (FL4) Cable gland PG13,5, Fine screen
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atio (MS) DIN- flange, incl. 1,5 m cable (VA44) (TR)
fic Brass DN65/PN16, Stainless steel Integrated tempera-ture
eci only VA (KL6) float measurement via
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S Aluminum terminal box, ø44 mm thermo reed
3 terminals
(VA80) (DR) Slosh tube
(KLS) Stainless steel (HT) HT-isolation
Aluminum terminal box float (TM) Interfacial level
incl. transducer MU3L ø82 mm indication
P2
Tank Level Indicating Systems
USE 6000 - Level Sensor
up to 6000 mm Length
Technical Data
Max. Length L : 6000 mm
0 1
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Materials : Stainless steel (1.4571, 1.4404), brass, 0
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other material on request LI
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Mounting Element : Stainless steel (1.4571, 1.4404), 04
tank screw or flange 12 /
Stem : Stainless steel (1.4571), brass,
ø = 18 x 1 mm
Float : Stainless steel (1.4571)
VA100, ø = 105 mm, oval
min. media density = 0,62 g/cm3
max. pressure = 32 bar
: Buna-N
BN 42, ø = 42 mm
min. media density = 0,55 g/cm3
max. pressure = 15 bar s
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Electrical Connection : ST1 - Cube plug DIN43650 yst
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(3-pin + earth) ng
PG - Cable gland PG 13,5 cati
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incl. 1,5 m cable el In
KL6 - Aluminum terminal box ev
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(58 x 64 x 36 mm, 3 terminals) nk
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KLS - Aluminum terminal box e
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incl. transducer MU3L s
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(75 x 80 x 57 mm) Bar
Protection Class : ST1, KL6, KLS = IP65, PG = IP67
Temperature Ranges : –10 °C... + 90 °C
–50 °C...+150 °C HT - high temperature
only with KL6 or silicone cable possible
Total Resistance : 0...100 kOhm
Power Supply : 8 ... 35 V DC with transducer, ce.
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Electrical Connections max. 24 V DC without transducer ut n
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KLS 75 x 80 T y pe of Screen : aRc1c2u r=a cys c±r6e,e4n m 1m2, 7 mm (1/2“) es with
g
appr. 0,1% at 6000 mm measuring length an
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57 Wiring : 3-wire, length up to 5000 mm ct to
depending on cable diameter bje
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Options : DR - slosh tube, Pt100-element, thermo reed, e
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HT - isolation, interfacial level indication s
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KL6 like KLS, however 58 x 64 x 36 mm atio
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SSTT11 cable 3-wire Pg eci
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55 Pg-
appr. ca. 5 cable gland p. 25
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