KROHNE OPTISWITCH 3000 series Wiring diagram

External housing Supplementary instructions
Vibrating Level Switch
OPTISWITCH series 3000

2
Contents
External housing • OPTISWITCH series 3000
48879-EN-210831
Contents
1 About this document ............................................................................................................... 3
1.1 Function ........................................................................................................................... 3
1.2 Target group ..................................................................................................................... 3
1.3 Symbols used................................................................................................................... 3
2 For your safety ......................................................................................................................... 4
2.1 Authorised personnel ....................................................................................................... 4
2.2 Appropriate use................................................................................................................ 4
2.3 Safety instructions for Ex areas........................................................................................ 4
3 Product description ................................................................................................................. 5
3.1 Conguration.................................................................................................................... 5
3.2 Principle of operation........................................................................................................ 8
3.3 Storage and transport....................................................................................................... 8
4 Mounting................................................................................................................................... 9
4.1 General instructions ......................................................................................................... 9
4.2 Mounting preparations ..................................................................................................... 9
4.3 Installation procedure....................................................................................................... 9
4.4 Mounting - external housing (instrument housing).......................................................... 10
5 Connect the sensor to the external housing....................................................................... 11
5.1 Preparing the connection ............................................................................................... 11
5.2 Connection procedure.................................................................................................... 11
6 Setup ....................................................................................................................................... 13
6.1 Setup.............................................................................................................................. 13
7 Maintenance ........................................................................................................................... 14
7.1 How to proceed if a repair is necessary.......................................................................... 14
8 Dismount................................................................................................................................. 15
8.1 Dismounting steps.......................................................................................................... 15
8.2 Disposal ......................................................................................................................... 15
9 Supplement ............................................................................................................................ 16
9.1 Technical data ................................................................................................................ 16
9.2 Dimensions .................................................................................................................... 18
Editing status: 2021-04-13

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1 About this document
External housing • OPTISWITCH series 3000
48879-EN-210831
1 About this document
1.1 Function
This supplementary instructions manual is valid in conjunction with
the operating instructions of the instrument. It gives you all necessary
information for a quick setup and safe operation of the instrument with
accessory. Therefore read both instructions manuals before you start
setup.
1.2 Target group
This operating instructions manual is directed to trained personnel.
Thecontentsofthismanualmustbemadeavailabletothequalied
personnel and implemented.
1.3 Symbols used
Document ID
This symbol on the front page of this instruction refers to the Docu-
ment ID. By entering the Document ID on www.vega.com you will
reach the document download.
Information, note, tip: This symbol indicates helpful additional infor-
mation and tips for successful work.
Note: This symbol indicates notes to prevent failures, malfunctions,
damage to devices or plants.
Caution: Non-observance of the information marked with this symbol
may result in personal injury.
Warning: Non-observance of the information marked with this symbol
may result in serious or fatal personal injury.
Danger: Non-observance of the information marked with this symbol
results in serious or fatal personal injury.
Ex applications
This symbol indicates special instructions for Ex applications.
• List
The dot set in front indicates a list with no implied sequence.
→ Action
This arrow indicates a single action.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of bat-
teries and accumulators.

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2 For your safety
External housing • OPTISWITCH series 3000
48879-EN-210831
2 For your safety
2.1 Authorised personnel
All operations described in this operating instructions manual must be
carriedoutonlybytrainedqualiedpersonnelauthorisedbytheplant
operator.
During work on and with the device, the required personal protective
equipment must always be worn.
2.2 Appropriate use
An external housing is part of a sensor.
2.3 Safety instructions for Ex areas
TakenoteoftheExspecicsafetyinstructionsforExapplications.
These instructions are attached as documents to each instrument
with Ex approval and are part of the operating instructions.

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3 Product description
External housing • OPTISWITCH series 3000
48879-EN-210831
3 Product description
3.1 Conguration
The scope of delivery encompasses:
• Level sensor with external housing
• Documentation
– A device operating instructions manual
– To this supplementary operating instructions
– Exspecicsafetyinstructions(withExversions),ifnecessary
furthercerticates
The instrument version "External housing" consists of the instrument
housing.
The instrument housing consists of the base element, the screwed
cover for the electronics or connection compartment and the housing
base.
Scope of delivery
Components - external
housing with direct cable
outlet

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3 Product description
External housing • OPTISWITCH series 3000
48879-EN-210831
1
2 3 4
5
Fig. 1: Components of the external housing
1 Instrument housing
2 Closing screw with cable gland (IP20)
3 Closing screw with cable gland (IP65)
4 Straining clamp
5 Tuning fork
The instrument version "External housing" consists of a sensor hous-
ing and the instrument housing.
The cable is part of the scope of delivery. This applies also to the ver-
sions with plug.
The metal sensor housing cannot be opened. The electrical connec-
tion must be carried out on the instrument housing.
The instrument housing consists of the base element, the screwed
cover for the electronics or connection compartment and the housing
base.
Components - instrument
housing and external
housing

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3 Product description
External housing • OPTISWITCH series 3000
48879-EN-210831
12
3
Fig. 2: Instrument housing and external housing
1 Instrument housing
2 Sensor housing
3 Tuning fork
The instrument housing consists of the base element, the screwed
cover for the electronics or connection compartment and the housing
base.
Thehousingbaseisproducedintwodierentmaterials.Theversion
depends on the selected material of the instrument housing.
• Instrument housing of plastic - housing base: plastic
• Instrument housing of stainless steel - housing base: stainless
steel

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3 Product description
External housing • OPTISWITCH series 3000
48879-EN-210831
A
B
1
2
3
4
Fig. 3: Components of the external housing
A Sensor housing
B Instrument housing
1 Screw-on cover
2 Base element
3 Housing base
4 Wall mounting plate
3.2 Principle of operation
The external housing is suitable for the following sensors:
• OPTISWITCH series 3000
3.3 Storage and transport
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
The outer packaging of standard instruments consists of environ-
ment-friendly, recyclable cardboard. PE foam or PE foil is also used
for packing the instrument. Dispose of the packaging material via
specialised recycling companies.
• Storage and transport temperature see chapter " Supplement -
Technical data - Ambient conditions"
• Relative humidity 20 … 85 %
Area of application
Packaging
Storage and transport
temperature

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4 Mounting
External housing • OPTISWITCH series 3000
48879-EN-210831
4 Mounting
4.1 General instructions
In the following cases, we recommend using an instrument version
with external housing:
• if the standard housing is too big
• if strong vibrations can damage the electronics
In Ex applications, only housings with appropriate Ex approval may
be used.
4.2 Mounting preparations
The following tools are required for mounting the external housing.
Plastic housing:
• Hexagon socket wrench, size 4
• Fork wrench, wrench size 19
Stainless steel housing:
• Fork wrench, wrench size 8
• Fork wrench, wrench size 19
We recommend using additional materials when mounting the wall
mounting plate.
• 4 screws, depending on the mounting surface
4.3 Installation procedure
1. Mark the holes according to the following drilling template
2. Depending on the mounting surface, fasten the wall mounting
plate with 4 screws
90 mm
(3.54")
R 3,5 mm
(0.14")
3mm
(0.12")
70 mm
(2.76")
8 mm
(0.32")
93 mm
(3.66")
110 mm
(4.33")
Fig. 4: Hole pattern - wall mounting plate (external housing)
Tools
Mounting material
Wall mounting - External
housing

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4 Mounting
External housing • OPTISWITCH series 3000
48879-EN-210831
Tip:
Mount the wall mounting plate in such a way that the cable gland of
the base points downward. Rain and condensation water can thus
draino.
The base of stainless steel can be displaced in 90° increments on the
wall mounting plate, the base of plastic by 180°.
Turn the cable gland of the electronics housing downward. The hous-
ing can be turned by 330° without the use of any tools.
Warning:
With the plastic housing, the four screws of the base may only be
screwedinhandtight.Exceedingthemax.torquespeciedinchapter
" Technical data" can damage the wall mounting plate.
4.4 Mounting - external housing (instrument
housing)
→ Mountthesensortothebottom,dependingontheprocesstting
Note:
When mounting the sensor, note the instructions in the operating
instructions manual of the sensor.

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5 Connect the sensor to the external housing
External housing • OPTISWITCH series 3000
48879-EN-210831
5 Connect the sensor to the external
housing
5.1 Preparing the connection
Follow the instructions in the operating instructions manual of the
sensor.
5.2 Connection procedure
Note:
The metal sensor housing cannot be opened. The electrical connec-
tion must be carried out on the instrument housing.
1. Insert the cable end through the cable entry on the external hous-
ing (instrument housing)
Tip:
Only run the cable loosely.The connection cable can only be sepa-
rated on the external housing (instrument housing). If the sensor
should be dismounted, the connection cable must be free to take out
the sensor.
1234
Fig. 5: Connection of the sensor in the socket housing
1 Red
2 Yellow
3 Black
4 Green
5 Green/yellow (ground terminal)
2. Connect the cables to the terminals in the socket housing.

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5 Connect the sensor to the external housing
External housing • OPTISWITCH series 3000
48879-EN-210831
The cables are numbered and cannot be interchanged.The
ground cable (green/yellow) must be connected to the ground
screw.
3. Tighten the compression nut of the cable entry gland. The seal
ring must completely encircle the cable
The electrical connection of the electronics module is described in the
operating instructions manual of the sensor.

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6 Setup
External housing • OPTISWITCH series 3000
48879-EN-210831
6 Setup
6.1 Setup
Setup is carried out according to the operating instructions manual of
the respective sensor.

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7 Maintenance
External housing • OPTISWITCH series 3000
48879-EN-210831
7 Maintenance
7.1 How to proceed if a repair is necessary
If it is necessary to repair the instrument, please contact the agency
serving you.

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8 Dismount
External housing • OPTISWITCH series 3000
48879-EN-210831
8 Dismount
8.1 Dismounting steps
Take note of chapters " Mounting" and " Connect sensor to the exter-
nal housing" and carry out the listed steps in reverse order.
8.2 Disposal
The instrument consists of materials which can be recycled by spe-
cialised recycling companies. We use recyclable materials and have
designed the electronics to be easily separable.
Correctdisposalavoidsnegativeeectsonhumansandtheenviron-
ment and ensures recycling of useful raw materials.
Materials: see chapter " Technical data"
If you have no way to dispose of the old instrument properly, please
contact us concerning return and disposal.
WEEE directive 2002/96/EG
This instrument is not subject to the WEEE directive 2002/96/EG and
the respective national laws. Pass the instrument directly on to a spe-
cialised recycling company and do not use the municipal collecting
points.These may be used only for privately used products according
to the WEEE directive.

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9 Supplement
External housing • OPTISWITCH series 3000
48879-EN-210831
9 Supplement
9.1 Technical data
Technical data
Followingyoundalldatadeviatingfromthestandardinstrument.Allothertechnicaldataare
speciedintheoperatinginstructionoftherespectivesensor.
General data
Material 316L corresponds to 1.4404 or 1.4435
Materials, non-wetted parts
ƲSensor housing 316L
ƲPlastic instrument housing (external
housing)
Plastic PBT (Polyester)
ƲStainless steel instrument housing -
electropolished (external housing)
316L
ƲHousing base Plastic PBT (Polyester), 316L
ƲWall mounting plate Plastic PBT (Polyester)
ƲCable to the instrument housing PUR
ƲSeal between housing socket and wall
mounting plate
TPE(xedconnected)
ƲSeal between housing and housing
cover (instrument version)
Silicone
ƲGround terminal 316L
ƲConnection cable (suspension cable
version)
PTFE/FEP
Weight
ƲExternal instrument housing approx. 660 g (23 oz)
ƲSensor housing 1100 g (38 oz)
Length - Connection cable to the external
housing
2 m, 5 m, 10 m (6.562 ft, 16.41 ft, 32.81 ft)
Process conditions
Process temperature Depending on the sensor
Ambient temperature on the sensor
housing
-20 … +80 °C (-4 … +176 °F)
Ambient, storage and transport tempera-
ture on the instrument housing
-40 … +80 °C (-40 … +176 °F)

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9 Supplement
External housing • OPTISWITCH series 3000
48879-EN-210831
Electromechanical data
Cable entry/plug 1)
ƲInstrument housing – 1 x cable gland M20 x 1.5 (cable: ø 6 … 12 mm), 2 x
blind plug M20 x 1.5
or:
– 1 x closing cap ½ NPT, 2 x blind plug ½ NPT
or:
– 1 x plug (depending on the version), 2 x blind plugs
M20 x 1.5
ƲHousing base – 1 x cable entry M20 x 1.5 (cable: ø 6 … 12 mm)
Spring-loaded terminals for wire cross-section up to 2.5 mm² (AWG 14)
Electrical protective measures
Protection rating
ƲSensor housing IP66/IP67 (NEMA Type 4X)
ƲInstrument housing - Instrument
socket
IP66/IP67 (NEMA Type 4X)
1) Depending on the version M12 x 1, according to ISO 4400, Harting, 7/8" FF.

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9 Supplement
External housing • OPTISWITCH series 3000
48879-EN-210831
9.2 Dimensions
External housing - direct cable outlet
90 mm
(3.54")
110 mm
(4.33")
~ 66 mm
(2.6")
59 mm
(2.32")
ø 10 mm
(0.39")
Fig. 6: External housing with direct cable outlet to the vibrating element

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9 Supplement
External housing • OPTISWITCH series 3000
48879-EN-210831
Sensor housing and external housing (instrument housing)
90 mm
(3.54")
110 mm
(4.33")
ca.98 mm
(3.86")
59 mm
(2.32")
125 mm
(4.92")
ø 5,5 mm
(0.22")
30 mm
(1.81")
Fig. 7: Sensor housing and external housing (instrument housing)
Housing versions - instrument housing
~ 59 mm
(2.32")
ø 80 mm
(3.15")
112 mm (4.41")
M20x1,5/
½ NPT
~ 69 mm
(2.72")
ø 77 mm
(3.03")
112 mm
(4.41")
M20x1,5/
½ NPT
2
1
Fig. 8: Housing versions - instrument housing
1 Instrument housing - plastic
2 Instrument housing - stainless steel, electropolished

48879-EN-210831
2021-04-13 Subject to change without prior notice
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