KROHNE OPTIBAR LC 1010 Wiring diagram

Submersible level probe with ceramic measuring cell
Category
ATEX: II 1G Ex ia IIB T4 Ga
II 1D Ex ia IIIC T135°C Da
OPTIBAR LC 1010
OPTIBAR LC 1010OPTIBAR LC 1010
OPTIBAR LC 1010 Supplementary Instructions
Supplementary InstructionsSupplementary Instructions
Supplementary Instructions
© KROHNE 11/2020 - 4007640202 - AD OPTIBAR LC 1010 Ex ia R02 en

CONTENTS
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OPTIBAR LC 1010
1 Safety instructions 3
1.1 General notes ................................................................................................................... 3
1.2 EU conformity ................................................................................................................... 3
1.3 Safety instructions............................................................................................................ 3
2 Device description 4
2.1 Device description ............................................................................................................ 4
2.2 Marking............................................................................................................................. 4
2.3 Flammable products ........................................................................................................ 5
2.4 Device category ................................................................................................................ 5
2.5 Types of protection ........................................................................................................... 5
2.6 Ambient temperature / temperature classes.................................................................. 6
2.7 Electrical data................................................................................................................... 6
2.7.1 Output A and output B............................................................................................................. 6
2.7.2 Output H and output K ............................................................................................................ 7
2.7.3 Optional 3-wire Pt100 for output B and output K................................................................... 7
3 Installation 8
3.1 Mounting ........................................................................................................................... 8
4 Electrical connections 9
4.1 General notes ................................................................................................................... 9
4.2 Power supply .................................................................................................................... 9
4.3 Inputs/outputs .................................................................................................................. 9
4.4 Grounding and equipotential bonding.............................................................................. 9
4.5 Impact and friction sparks ............................................................................................... 9
5 Operation 10
5.1 Start-up........................................................................................................................... 10
5.2 Operation ........................................................................................................................ 10
5.3 Electrostatic charge .......................................................................................................10
6 Service 11
6.1 Maintenance ................................................................................................................... 11
6.2 Dismantling .................................................................................................................... 11

SAFETY INSTRUCTIONS 1
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OPTIBAR LC 1010
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1.1 General notes
This additional Ex instruction applies to explosion-protected versions of the submersible
hydrostatic level probe OPTIBAR LC 1010 with the marking II 1 G or II 1 D. It completes the
standard documentation for non-explosion protected versions.
The information given in this instruction contains only the data relevant to explosion protection
of category 1. The technical details given in the manual for the non explosion-protected versions
remain unchanged unless excluded or superseded by this document.
1.2 EU conformity
The manufacturer declares with the EU declaration of conformity on his own responsibility
conformity with the protection goals of directive 2014/34/EU acc. to EN 60079-0 and EN 60079-11
for use in hazardous areas with gas.
The EU type test certificate of the Institut für Sicherheitstechnik GmbH forms the basis of the EU
declaration of conformity:
The "X" after the certificate number refers to special conditions for safe use of the device, which
have been listed in these instructions.
If needed the EU type examination certificate can be downloaded from the manufacturer's
website.
1.3 Safety instructions
Assembly, installation, start-up and maintenance may only be performed by personnel trained in
personnel trained inpersonnel trained in
personnel trained in
explosion protection
explosion protectionexplosion protection
explosion protection!
IBExU 18 ATEX 1143 X
IBExU 18 ATEX 1143 XIBExU 18 ATEX 1143 X
IBExU 18 ATEX 1143 X
CAUTION!
The operator or his agent is responsible for observing any additional standards, directives or
laws if required due to operating conditions or place of installation.
This applies in particular to the use of easily detachable process connections when measuring
flammable media.

2 DEVICE DESCRIPTION
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OPTIBAR LC 1010
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2.1 Device description
The OPTIBAR LC 1010 submersible hydrostatic level probe is designed to measure the absolute
pressure and gauge pressure in flammable and non-flammable gases and liquids.
2.2 Marking
The marking of the entire device is on the housing, where the following identification plate can be
found.
Figure 2-1: Example of an identification plate
1 Device Type
2 Manufacturer
3 Note to observe the documentation
4 ID number for the CE marking
5 Permitted maximum electrical values for supply circuit (output A or output H)
6 Permitted maximum electrical values for optional PT100 circuit (output B or output K)
7 Information relevant for Ex approval
8 Connecting cable assignment
9 Nominal measuring range, electrical characteristics output A or H (supply circuit)
made in Germany
mH2O
VGKL 4RPSD3VTABTE0000
Pinout: Vs+: wh; Vs-: bn
Shield: gnye; T+: ye; T-: gy+pk
Supply circuit (Pressure):
Ci: 49,2 nF; Li: ca. 0 μH; Cgnd: 100 nF
Pt100 circuit (Temperature):
/2-wire
Ui: 30 V; li: 54 mA; Pi: 405 mW
Ci: ca. 0nF; Li: ca. 0 μH

DEVICE DESCRIPTION 2
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2.3 Flammable products
Atmospheric conditions:
Atmospheric conditions:Atmospheric conditions:
Atmospheric conditions:
An explosive atmosphere is a mixture of air and flammable gases, vapours, mists or dusts under
atmospheric conditions. It is defined by the following values
T
atm
= -20...+60°C / -4...+140°F and P
atm
= 0.8...1.1 bar / 11.6...15.9 psi.
Outside of this range, for most mixtures no key figures are available for the ignition behaviour.
Operating conditions:
Operating conditions:Operating conditions:
Operating conditions:
Outside of atmospheric conditions, the explosion protection according to directive 2014/34/EC
(ATEX) –regardless of the zone assignment –is not applicable due to the lack of key safety data.
2.4 Device category
Category 1G equipment (EPL-Ga equipment)
Category 1G equipment (EPL-Ga equipment)Category 1G equipment (EPL-Ga equipment)
Category 1G equipment (EPL-Ga equipment)
The device is installed in hazardous areas requiring equipment of category 1G.
Category 1D equipment
Category 1D equipmentCategory 1D equipment
Category 1D equipment
The devices are installed in hazardous areas requiring equipment category 1D.
2.5 Types of protection
The pressure transmitter is designed with protection type intrinsic safety, protection level "ia"
according to EN 60079-11.
The marking is:
II 1G Ex ia IIB T4 Ga
II 1G Ex ia IIB T4 GaII 1G Ex ia IIB T4 Ga
II 1G Ex ia IIB T4 Ga
II 1D Ex ia IIIC T135
II 1D Ex ia IIIC T135II 1D Ex ia IIIC T135
II 1D Ex ia IIIC T135°C Da
C DaC Da
C Da
The marking contains the following information:
The marking contains the following information:The marking contains the following information:
The marking contains the following information:
II
IIII
II Explosion protection, group II
1
11
1Equipment category 1
G
GG
GGas explosion protection
D
DD
DDust ignition protection
Ex ia
Ex iaEx ia
Ex ia Intrinsically safe, level of protection "ia"
IIB
IIBIIB
IIB Gas group, suitable for gas groups IIB and IIA
IIIC
IIICIIIC
IIIC Dust group, suitable for dust groups IIIA, IIIB and IIIC
T4
T4T4
T4 Temperature class, suitable for temperature classes T4...T1
T135
T135T135
T135°C
CC
CMaximum surface temperature 135°C/275°F
Ga
GaGa
Ga EPL, suitable for zone 0
Da
DaDa
Da EPL, suitable for zone 20
Table 2-1: Types of protection

2 DEVICE DESCRIPTION
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OPTIBAR LC 1010
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2.6 Ambient temperature / temperature classes
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output A (4...20 mA), B
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output A (4...20 mA), BOPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output A (4...20 mA), B
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output A (4...20 mA), B
(4...20 mA 3-wire Pt100), H (4...20 mA HART
(4...20 mA 3-wire Pt100), H (4...20 mA HART(4...20 mA 3-wire Pt100), H (4...20 mA HART
(4...20 mA 3-wire Pt100), H (4...20 mA HART
®
) and K (4...20 mA HART
) and K (4...20 mA HART) and K (4...20 mA HART
) and K (4...20 mA HART
®
3-wire Pt100).
3-wire Pt100).3-wire Pt100).
3-wire Pt100).
The max. permissible ambient temperatures depending on the temperature classes are
specified in the following tables.
Category 1G, equipment
Category 1G, equipmentCategory 1G, equipment
Category 1G, equipment
Category 1D equipment
Category 1D equipmentCategory 1D equipment
Category 1D equipment
2.7 Electrical data
2.7.1 Output A and output B
Temperature class Ambient temperature range at the electronics and media
temperature range at the sensor
T4, T3, T2, T1 -25...+65°C / -13...+149°F
Table 2-2: Application for category 1G equipment
Temperature class Ambient temperature range at the electronics and media
temperature range at the sensor
T4, T3, T2, T1 -25...+65°C / -13...+149°F
Table 2-3: Application for category 1D equipment
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output A (4...20 mA),
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output A (4...20 mA),OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output A (4...20 mA),
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output A (4...20 mA),
output B (4...20 mA 3-wire Pt100).
output B (4...20 mA 3-wire Pt100).output B (4...20 mA 3-wire Pt100).
output B (4...20 mA 3-wire Pt100).
Supply and signal circuit: terminal 1[+],
2[-] In protection type intrinsic safety Ex ia IIB or IIIC
Maximum values
• U
i
: 28 V
• I
i
: 93 mA
• P
i
: 660 mW
• C
i
[nF]: ~ 49.2 nF
The effective inner inductance L
i
is negligibly.
All electrical connection values plus circuit inductivities
1µH/m and circuit capacities 160 pF/m for factory supplied
cable.
The supply connections have a maximum internal capacity of
100 nF to the housing.
Table 2-4: Electrical data for OPTIBAR LC 1010 with output A and output B

DEVICE DESCRIPTION 2
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2.7.2 Output H and output K
2.7.3 Optional 3-wire Pt100 for output B and output K
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium), and output H (4...20 mA
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium), and output H (4...20 mAOPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium), and output H (4...20 mA
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium), and output H (4...20 mA
HART
HARTHART
HART
®
), output K (4...20 mA HART
), output K (4...20 mA HART), output K (4...20 mA HART
), output K (4...20 mA HART
®
3-wire Pt100).
3-wire Pt100).3-wire Pt100).
3-wire Pt100).
Supply and signal circuit: terminal 1[+],
2[-] In protection type intrinsic safety Ex ia IIB or IIIC
Maximum values
• U
i
: 28 V
• I
i
: 93 mA
• P
i
: 660 mW
• C
i
: ~ 14 nF
The effective inner inductance L
i
is negligibly.
All electrical connection values plus circuit inductivities
1µH/m and circuit capacities 160 pF/m for factory supplied
cable.
The supply connections have a maximum internal capacity of
27 nF to the housing.
Table 2-5: Electrical data for OPTIBAR LC 1010 with output H and output K
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output B (4...20 mA
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output B (4...20 mAOPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output B (4...20 mA
OPTIBAR LC 1010 VGKL with housing S (stainless steel), T (titanium) and output B (4...20 mA
3-wire Pt100), output K (4...20 mA HART
3-wire Pt100), output K (4...20 mA HART3-wire Pt100), output K (4...20 mA HART
3-wire Pt100), output K (4...20 mA HART
®
3-wire Pt100).
3-wire Pt100).3-wire Pt100).
3-wire Pt100).
Pt100 circuit (3-wire) In protection type intrinsic safety Ex ia IIB or IIIC
Maximum values
• U
i
: 30 V
• I
i
: 54 mA
• P
i
: 405 mW
The effective internal capacitance C
i
is negligibly.
The effective inner inductance L
i
is negligibly.
All electrical connection values plus circuit inductivities
1µH/m and circuit capacities 160 pF/m for factory supplied
cable.
The supply connections have a maximum internal capacity to
the housing of 100 nF for output B and 27 nF for output K.
Table 2-6: Electrical data for optional 3-wire Pt100 for output B and output K

3 INSTALLATION
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OPTIBAR LC 1010
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3.1 Mounting
Installation and setup must be carried out according to the applicable installation standards
(e.g. EN 60079-14 or IEC 60079-14) by qualified personnel trained in explosion protection. The
information given in the manuals and the supplementary instructions must be observed at all
times.
Install pressure transmitters so that:
•they are not in a pneumatic flow.
•excessive dust deposits (over 5 mm) and complete dust coverage are prevented.
•there is no danger from mechanical impact effects.
CAUTION!
The manufacturer is not liable for any damage resulting from improper use or use other than the
intended purpose. This applies in particular to hazards due to insufficient corrosion resistance
and suitability of the materials in contact with product.

ELECTRICAL CONNECTIONS 4
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4.1 General notes
Circuits
The circuits are designed in protection type "intrinsically safe".
The connecting cables should be selected according to the applicable installation standards (e.g.
EN 60079-14) and the maximum operating temperature. Ensure that no residual current can
form between separate intrinsically safe signal circuits.
•The connecting cables must be fixed and laid so they are sufficiently protected against
damage.
•Devices with plugs are to be mounted in that way that ingress protection IP20 is maintained.
•Lay cables so as to ensure that there is sufficient distance between surfaces of the
measuring unit and the connecting cable.
•Unused cable entries are to be closed (>IP66 / 67).
Ensure that all seals are tight.
4.2 Power supply
The pressure transmitter does not require a separate power supply. The required supply for the
built-in electronics is provided via the 4...20 mA current output.
Overvoltage protection
If the level probe is being used as category 1 G equipment, a suitable overvoltage protection
device must be installed upstream (see Industrial Safety Regulations [BetrSichV] and EN 60079-
14).
4.3 Inputs/outputs
The terminal assignment of the built-in electrical equipment is described in the standard
documentation. The pressure transmitter signal circuits may only be connected to certified
intrinsically safe slave units or circuits. For more information refer to chapter "Electrical data".
4.4 Grounding and equipotential bonding
If the device is not sufficiently electrostatically grounded via the process cables, an additional
ground connection must be established using the ground terminal.
Any existing cable shields should be connected to ground according to applicable installation
regulations (EN 60079-14). A terminal connection in the terminal compartment permits a short
way grounding of the cable shields.
4.5 Impact and friction sparks
When used as category 1G equipment, the OPTIBAR LC 1010 in titanium versions must be
mounted in such a way that sparks from impact and friction between titanium and steel (except
stainless steel, if the presence of rust particles can be excluded) cannot occur.

5 OPERATION
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5.1 Start-up
Start-up is only permitted when the pressure transmitter:
•is correctly installed in the system and connected.
•has been checked for the proper state with regard to its installation and connection
requirements.
The user of the system must have it checked before start-up in compliance with the national
regulations for checks before startup.
5.2 Operation
Pressure transmitter must be operated in such a way that they remain within the maximum and
minimum permissible temperatures and pressures and the electrical limit values.
Pressure transmitter may only be operated if the equipment parts necessary for safety are
effective in the long run, and are not rendered inoperable during operation.
For more information refer to chapter "Dismantling".
5.3 Electrostatic charge
A caution label points out the safety measures that must be taken with regard to electrostatic
charges during operation.
In order to avoid ignition hazards due to electrostatic charge, the pressure transmitter
may not be used in areas with:
•processes that generate strong charges,
•mechanical friction and cutting processes,
•spraying of electrons (e.g. in the vicinity of electrostatic painting systems).
In order to avoid ignition hazards due to electrostatic charge, the connecting cables must be
permanently laid and the pressure transmitter may not be dry cleaned.
Figure 5-1: Warning note
Attention!
Plastic parts
There is a danger of electrostatic charge!