UWT Capanivo CN 7000 Series User manual

Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
page
Table of contents
Page
Safety notes / Technical support 2
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Introduction 3
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Technical data Electrical data 4
Dimensions 6
Mechanical data 10
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Options/ Accessories 12
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Operating conditions 13
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Approvals 15
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Installation Mechanical installation 16
Electrical installation 22
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Notes for use in Hazardous Locations 29
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Operation Operating elemens / LED's 34
Factory calibration 35
Recalibration 36
Advanced calibration 37
Advanced possibilities 41
WHG Proof Test 43
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Troubeshooting 45
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Transport and Storage 46
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Maintenance 47
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Probe modications 48
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Disposal 48
Subject to technical change. We assume no liability for typing errors.
Different variations than specied are possible.
Please contact our technical consultants.
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CN 7000 gi060821 1

Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
page
Safety notes / Technical support
Notes
• Installation, maintenance and commissioning may be accomplished only by qualied technical personnel.
• The product must be used only in the manner outlined in this instruction manual.
Special attention must be paid to warnings and notes as follows:
Safety symbols
In manual and on
product
Description
CAUTION: refer to accompanying documents (manual) for details.
Earth (ground) Terminal
Protective Conductor Terminal
Technical support
Please contact your local supplier (for address see www.uwt.de). Otherwise you can contact:
UWT GmbH Tel.: [phone]
Westendstr. 5 Fax: [phone]
D-87488 Betzigau [email protected]
Germany www.uwtgroup.com
WARNING
Relates to a caution symbol on the product: A failure to observe the necessary
precautions can result in death, serious injury and/ or considerable material damage.
WARNING
Relates to a caution symbol on the product: Risk of electric shock
WARNING
A failure to observe the necessary precautions can result in death, serious injury
and/or considerable material damage.
This symbol is used, when there is no corresponding caution symbol on the product.
CAUTION A failure to observe the necessary precautions can result in considerable material
damage.
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CN 7000
gi060821
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
page
Introduction
The Capanivo series CN 7000 is a capacitance switch for:
• Level detection of liquids, solids (powder and granules), slurries and foam.
• Interface detection (for example, oil / water or foam / liquid)
It works in all types of vessels, pipes and silos within a wide range of appliations like:
• Food, brewery, dairy, beverage and pharmaceuticals
• Chemical and petrochemical
• Water and waste water
• Machine building industry
It can also be used for leckage detection in double walled vessels, tanks and silos or in
moldings and collecting ponds.
Applications
Measurement
principle
The Capanivo series CN 7000 detects the capacitance around its probe. Due to the active
shield technology it has an increased insensitivity to material buildup on the probe.
Features
Process • Measurement independent from inuence of the vessel wall
• Factory provided precalibration allows measurement of most applications without
sensitivity setting on site
• Active shield electrode for compensation of material buildup
• Potted construction protects from shock, vibration, humidity, condensation
• Dielectric constant of 1.5 or more
• Process temperature up to 125°C
• Intrinsically Safe (IS) design for Hazardous areas (requires external barrier)
• Approvals CE, ATEX, IEC-Ex, FM, CSA, INMETRO, TR-CU, KC, WHG
Electronics • 4-wire DC with Relais signal output
• 2-wire 8/16 mA
• 4-20mA continuous mode
(4mA = uncovered probe, 20mA = probe covered with high dielectric material)
• Terminal or M12 connection
• Sensitivity setting by potentiometer, including visual feedback via LED
• Remote Test with external signal conditioning instrument
Mechanics • Corrosion resistant construction with enclosure made of thermoplastic polyester,
wetted parts made of PPS, PVDF, PEEK and 316L stainless steel
• Compact probe lenght
• Pipe extension (max. 4m), optional sliding sleeve allows to change the switch point
easily during operation of the device
• Cable extension (max. 20m), cuttable by user
• Various process connections: threaded (including G½“ hygienic), anged (screwed)
or Tri-clamp
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CN 7000 gi060821 3

Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Technical data
Electrical data
Standard version
(General Purpose)
Power supply /
signal output
4-wire operation with DC supply and relay
Supply:
9 - 33 V DC, 0.7W incl. 10% of EN 61010-1
Signal output:
Relay SPST
Max. switching voltage: 60 V DC or 30 V AC;
Limted to 35 V DC or 16 V AC in wet locations
Max. switching current / switching power: 1 A / 60 W
2-wire operation with 8/16 mA loop
9 - 33 V DC, 0.7W incl. 10% of EN 61010-1
8/16 mA
Tolerance: 8mA +/-0,5mA, 16mA -1mA/+2mA
If required, the unit can be set to 4-20mA continuous current output
(direct output of the measured capacitance).
The stated voltage is the resulting voltage on the unit. Any voltage drop on an
external series resistance must be considered.
Intrinsically safe version
Power supply /
signal output
2-wire operation with 8/16 mA loop
10.8 - 30 V DC, 0.7W incl. 10% of EN 61010-1
8/16 mA or 16/8 mA
Tolerance: 8mA +/-0,5mA, 16mA -1mA/+2mA
Intrinsically safe barrier or signal conditioning instrument required:
Ui=30 V Ii=160 mA Pi=0,8 W, Ci=7,6 nF Li =0,3 mH
If required, the unit can be set to 4-20mA continuous current output
(direct output of the measured capacitance).
The stated voltage is the resulting voltage on the unit. Any voltage drop on an
external series resistance must be considered.
4-wire operation with DC supply and solid state relay
This operation is only available for CN 7120/7121 with enclosure Ø65mm and connection via
terminal block (Solid state relay integrated).
Supply:
10.8 - 30 V DC, 0.7W incl. 10% von EN 61010-1
Intrinsically safe barrier required:
Ui=30 V Ii=160 mA Pi=0,8 W, Ci=7,6 nF Li =0,3 mH
Signal output::
Solid state relay
Max. switching voltage / current: 30 V DC / 82mA
For connection to an intrinsically safe "switch amplier for contact input"
or to an intrinsically safe PLC with integrated input card for contact input.
Ui=30 V Ii=200 mA Pi=350 mW, Ci=4,2 nF Li=0
The power supply circuit is infallibly galvanically isolated from the transistor circuit.
Safety operation
(FSL,FSH)
Selectable for minimum or maximum safety by polarity of power supply voltage
Signal delay Probe uncovered -> covered ca. 0.5 sec
Probe covered -> uncovered ca. 0.5 sec
Indicating light Build in LEDs:
Power (green), Signal output (yellow), Sensor status / Diagnostics (white)
Sensitivity Adjustable by potentiometer
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CN 7000
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
page
Power
supply
applied
Loop current /mA 1 or 2:
Diagnostics test is o.k.
Measurement signal is present:
- Loop current = 8 or 16mA
- Relay = open or closed (depending on setted
output logic, see page 26)
3:
Diagnostics test failed:
- Loop current <=3,6mA
- Relay = open
sec
Technical data
Electrical connection With enclosure Ø65mm:
Terminal block, terminals 0.14 - 1.5 mm2 (AWG 28-16)
With enclosure Ø65mm and Ø35mm:
M12x1 according to IEC 61076-2-101, male, 4-pole, coding A-standard
Cable entry With enclosure Ø65mm:
M20 x 1.5 screwed cable gland
Clamping range (diameter) of factory provided cable glands: 6..12 mm (0.24 .. 0.47")
or
NPT 1/2“ conduit
Overvoltage category II
Protection class III
Diagnostics / Remote funtion test
The units starts a self diagnostics routine when the power supply is applied or interrupted for >2 seconds.
The loop current shows following behavior, which can be evaluated by an external signal conditioning instrument
(accessory) or by a PLC:
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CN 7000 gi060821 5

Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Technical data
Dimensions
CN 7120 - Short extension length
Enclosure
Ø65mm
Top view
G 1/2" hygienic
All dimensions in mm (inch)
G 1/2" hygienic
Top view
Stainless steel process connection
Top view
Top view
Enclosure
Ø35mm
Enclosure
Ø35mm
Enclosure
Ø65mm
see
next
page
see
next
page
CN 7121 - Short extension length
see next
page
G 1/2" G 3/4" G 1"
NPT 3/4"
G 1/2" G 3/4" G 1"
NPT 3/4"
1.4404 (316L)
Probe
PEEK
1.4404 (316L)
Probe
PPS/PVDF
1.4404 (316L)
Probe
PEEK
1.4404 (316L)
Probe
PPS/PVDF
PPS/PVDF
Plastic process connection
Probe
PPS/PVDF
Probe
PPS/PVDF
PPS/PVDF
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CN 7000
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Technical data
CN 7130 - Pipe extension
CN 7150 - Cable extension
CN 7130 CN 7150
1.4404
(316L)
1/2" NPT
conduit
M20x1,5
cable gland
M12
plug
Top view
see
below
Enclosure
Ø65mm
Possible wiring
see
below
* G 3/4" not
available with PPS
process connection
PPS
PPS
Probe
PPS
1.4404 (316L)
/PPS
FEP
Probe
PPS/PVDF
1.4404 (316L)
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Technical data
Tri-clamp
Flange is screwed to
process connection
To Top: Enclosure Ø65mm: 131 (5.2) Enclosure Ø35mm: 110 (4.3)
Tri-clamp ØD
DN 25 (1") 50,5 (1.99")
DN 40 (1 1/2")
DN 50 (2") 64 (2.52")
Flange
Type Facing
thickness
ASME 150 lbs
ASME 300 lbs 2 mm (0.08")
Raised face
Facing thickness
Code Type Number
of holes
d2
mm (Inch)
Lk
mm (Inch)
D
mm (Inch)
T
thickness
mm (Inch)
ASME B16.5,
raised face
R 1" 150 lbs 4 15,9 (0.63) 79,3 (3.12) 108,0 (4.25) 14,3 (0.56)
S 1" 300 lbs 4 19,1 (0.75) 88,9 (3.5) 123,8 (4.87) 17,5 (0.69)
T 1½" 150 lbs 4 15,9 (0.63) 98,6 (3.88) 127,0 (5.0) 17,5 (0.69)
U 1½" 300 lbs 4 22,2 (0.87) 114,3 (4.5) 155,6 (6.13) 20,6 (0.81)
V 2" 150 lbs 4 19,1 (0.75) 120,7 (4.75) 152,4 (6.01) 19,1 (0.75)
W 2" 300 lbs 819,1 (0.75) 127,0 (5.0) 165,1 (6.5) 22,2 (0.87)
EN 1092-1
type A, at
faced
NDN25
PN16/40 4 14,0 (0.55) 85,0 (3.35) 115,0 (4.53) 18,0 (0.71)
P
DN40
PN16/40
418,0 (0.71) 110,0 (4.33) 150,0 (5.91) 18,0 (0.71)
QDN50
PN16/25/40 418,0 (0.71) 125,0 (4.92) 165,0 (6.5) 18,0 (0.71)
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Technical data
CN 7120 - G 1/2" hygienic process connection / EHEDG approval
Flush welding
socket:
Design Detail A:
Sealing area between CN 7120
(PEEK) and the on site process
connection (metal)
Metal type according to hygienic
and further external requirements.
CN 7120
process
connection
Metal
1.4404 (316L)
PEEK
FDA registration number:
21 CFR 177.2415
The ush welding socket must meet the following design:
see Detail A
Flush welding
socket:
Installation
Metal-peek sealing
• The support must be plane and without any
gap. No teon tape (or similar) is allowed to
be in between.
• Fixing torque 30 Nm
The quality of the welding with the
container wall must be according to
the respective regulations (e.g. gaps,
transitions, surface nish).
leackage
borehole
(optional)
EHEDG approval is available with CN7120 with process connection G 1/2" hygienic
EHEDG
versions
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CN 7000 gi060821 9

Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Mechanical data
Process connection
and extension
CN 7120 - Stainless steel process connection, version G 1/2" Hygienic:
Material process connection: 1.4404 (316L)
Material probe: PEEK
(1,2)
Seal process connection-probe: FKM (optional FFKM) (2)
Thread (3): G 1/2" Hygienic
Wetted sensor surface: Ra ≤ 0.8 μm (31 μin)
Hygienic design: EHEDG
CN 7120 - Stainless steel process connection:
Material process connection: 1.4404 (316L)
Material probe: PPS (glass bre reinforced) (1,2)
Optional PVDF
(1,2)
Seal process connection-probe: FKM (optional FFKM) (2)
Thread (3): G 1/2", G 3/4", G 1“, NPT 3/4"
Adapters for G 1 1/2", NPT 1 1/4", NPT 1 1/2"
Tri-clamp DN25 (1"), DN40 (1 1/2"), DN50 (2")
DIN 32676 Type A (DIN 11851) and
DIN 32676 Type C (ASME BPE 2009)
Flange (screwed) (4) DN 25, 40, 50; ASME 1", 1 1/2”, 2"
CN 7121 -Plastic process connection:
Material process connection: PPS (glass bre reinforced) (1, 2)
Optional PVDF
(1,2)
Material probe: PPS (glass bre reinforced) (1,2)
Optional PVDF
(1,2)
Seal process connection-probe: FKM (optional FFKM) (2)
Thread (3): G 1“, NPT 3/4"
CN 7130 - Pipe extension:
Material process connection: 1.4404 (316L)
Material pipe extension: 1.4404 (316L)
Material probe: PPS (glass bre reinforced) (1,2)
Optional PVDF
(1,2)
Seal pipe-probe: FKM (optional FFKM) (2)
Thread (3): G 3/4", G 1“, NPT 3/4"
Adapters for G 1 1/2", NPT 1 1/4", NPT 1 1/2"
Flange (screwed) (4) DN 25, 40, 50; ASME 1", 1 1/2”, 2"
CN 7150 - Cable extension, with process connection 1.4404 (316L):
Material process connection: 1.4404 (316L)
Material extension cable: FEP jacketed
Material probe and extention cable xing:
PPS (glass bre reinforced) (1,2)
Seal process connection- extension cable:
FKM (optional FFKM)
(2)
Seal extension cable- probe: FKM (optional FFKM) (2)
Thread
(3): G 3/4", G 1“, NPT 3/4"
Adapters for G 1 1/2", NPT 1 1/4", NPT 1 1/2"
Flange (screwed) (4) DN 25, 40, 50; ASME 1", 1 1/2”, 2"
Technical data
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Technical data
Extension length "L" CN 7120 Stainless steel process conn.: 92 mm (3.6“)
CN 7121 Plastic process connection: 92 mm (3.6“)
CN 7130 Pipe extension: 300 .. 4000mm (11.8 .. 157")
CN 7150 Cable extension: 400 .. 20.000mm (15.7 .. 787")
Tolerance length "L“ CN 7120 Stainless steel process conn.: ±5 mm (±0.2“)
CN 7121 Plastic process connection: ±5 mm (±0.2“)
CN 7130 Pipe extension: ±10 mm (±0.4“)
CN 7150 Cable extension: ±15 mm (±0.6“)
Material
Enclosure Ø65mm
Material Housing: Thermoplastic polyester (PBT/PC)
Material Lid: Transparent thermoplastic polycarbonate (PC)
Material Seal between housing and lid: VMQ (vinyl-methyl-silicone)
Material Nameplate: polyester lm
Material
Enclosure Ø35mm
Material Housing: 1.4404 (316L)
Material Lid with M12 plug: Transparent thermoplastic polycarbonate (PC)
Material Seal between housing and lid: VMQ (vinyl-methyl-silicone)
Material Nameplate: polyester lm
Ingress protection Type 4X / IP68
Sound level n.a. (no sound is produced)
Overall weight (ca.) CN 7120 Stainless steel process conn.: 0.35 kg (0.77 lbs)
CN 7121 Plastic process connection: 0.25 kg (0.55 lbs)
CN 7130 Pipe extension: 0.6 kg (1.32 lbs) + 0.85 kg/m (1.87 lbs per 39.3“)
CN 7150 Cable extension: 0.6 kg (1.32 lbs) + 0.08 kg/m (0.18 lbs per 39.3“)
All weights with threaded process connection.
CN 7150 - Cable extension, with process connection PPS:
Material process connection: PPS (glass bre reinforced) (1,2)
Material cable extension: FEP jacketed
Material probe and extention cable xing:
PPS (glass bre reinforced) (1,2)
Seal process connection- extension cable:
FKM (optional FFKM)
(2)
Seal cable- probe: FKM (optional FFKM) (2)
Thread
(3): G 1“, NPT 3/4"
Adapters for G 1 1/2", NPT 1 1/4", NPT 1 1/2"
(1) Discolouration is possible due to inuence of UV and temperature. This has no negative
effect to the material properties.
(2) Food grade, FDA registration number:
Seals 21 CFR 177.2600
PVDF 21 CFR 177.1550
PPS 21 CFR 175.300
PEEK 21 CFR 177.2415
(3) Thread types: G = DIN ISO 228-1 NPT = ASME B 1.20.1
(4) Flange pressure rating: DN25 PN16/40, DN40 PN16/40, DN50 PN16/25/40
ASME 150lbs, ASME 300lbs
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Options / Accessories
Sliding sleeve
CN 7130
G 1 1/4" / G 1 1/2" / NPT 1 1/4" / NPT 1 1/2"
Material: 1.4404 (316L)
Sealing material to the extension pipe: FKM
Max. process pressure: –1 to 10 bar (146 psi)
Options
Accessories
Adapter for process
connection
Adapter from G 1" thread to G 1 1/2"
Adapter from NPT 3/4" thread to NPT 1 1/4" / NPT 1 1/2"
Material: 1.4305 (303) or 1.4404 (316L)
Max. process pressure: –1 to 25 bar (363 psi)
Flush welding
socket
For version with EHEDG certicate
Fitting to CN 7120 with process connection G 1/2" hygienic
Flush welding socket ø30/ G 1/2", 1.4404 (316L),
with or without leackage borehole
Details see page 9
Shortening kit For CN 7150 extension cable
Sensguard Outer thread (process connection):
G1" DIN ISO 228-1 or NPT 3/4" ASME B 1.20.1
Internal thread:
G 1/2" (requires CN 7120 with process connection G 1/2" to t in).
Material: PPS
Max. process pressure: –1 to 10 bar (146 psi)
Complementary products (from outside companies)
Remote instrument Operation with 8/16 mA, 2-wire current loop:
Input: 8/16 mA from CN 7000 unit
Output: Relay
Intrinsically safe and non-intrinsically safe operation:
Implements self diagnostics when power supply is applied or test button on remote instrument
is pressed (remote test, see page 5 and page 40-41)
M12 mating plug 4 pole, for version with M12 plug
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Operating conditions
Ambient and
process
temperature
(Non-Ex version)
Functional
Ambient- and process temperature limited to
-20°C (-4°F) with option FFKM seal O-ring
Mounting with long socket
Mounting with short socket
CN 7150
CN 7130
CN 7120
CN 7121
CN 7150
CN 7130
Derating of ambient
temperature with high
process temperature
Ambient- and process temperature limited to
-20°C (-4°F) with option FFKM seal O-ring
Dielectric constant Min. 1.5
Factory setting = 2.0
For dielectric constant of applicable materials: see external dielectric constant tables
Switching point Depending on setting of potentiometer and dielectric constant value of measured material.
See page 33 for details.
Repeatability 2 mm (0.08"), for water based liquids
Environment
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Ambient and process
temperature
(Ex versions)
Depending on Surface Temperature and Temperature Class, details see page 29.
Max. temperature
for CIP
135°C (275°F), duration 60min
150°C (302°F), duration 30min (only for CN 7120 with process connection G 1/2" hygienic)
Ambient temperature limited to 50°C (122°F), unit de-energized.
Max. permitted
mechanical torque
CN 7120 / CN 7121 CN 7130
Max. tractive force CN 7150 1.7 kN (at 40°C)
Max. process pressure CN 7120 Stainless steel process connection: –1 to 25 bar (363 psi)
CN 7121 Plastic process connection: –1 to 10 bar (146 psi)
CN 7130 Pipe extension: –1 to 25 bar (363 psi)
CN 7130 Pipe extension with sliding sleeve: –1 to 10 bar (146 psi)
CN 7150 Cable extension: –1 to 10 bar (146 psi)
Observe possible pressure limitation from the used ange type !
Pollution degree 4
Relative Humidity 0 - 100%, suitable for outdoor use
Altitude max. 3.000 m (9.843 ft)
Ventilation Ventilation is not required
Expected product
lifetime
Following parameters have a negative inuence on the expected product lifetime:
High ambient- and process temperature, corrosive environment, high vibration, high ow
rate of abrassive bulk material passing the probe.
max. 80Nm
max. 400N
(at 40°C) max. 400N
(at 40°C)
Operating conditions
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
page
General Purpose *
(Ordinary Locations)
CE
UKCA
FM / CSA
TR-CU
Hazardous Locations *Intrinsically Safe:
ATEX II 1G, 1/2G Ex ia IIC
ATEX II 1/2D Ex ia IIIC
IEC Ex ia IIC
IEC Ex ia IIIC
FM / CSA IS Class I, II, III, Div. 1, Gr. A-G
TR-CU 0Ex ia IIC
TR-CU Ex ia IIIC
INMETRO Ex ia IIC
INMETRO Ex ia IIIC
KC Ex ia IIC
KC Ex ia IIIC
CCC Ex ia IIC
CCC Ex iaD 20/A21
UKEX II 1G, 1/2G Ex ia IIC
UKEX II 1/2D Ex ia IIIC
Overll and leackage
protection *,**
WHG
VLAREM
EMC EN 61326
RoHS conform According to directive 2011/65/EU
Food grade material Wetted parts with FDA registration. Details see "Mechanical data".
Pressure Equipment
Directive
(2014/68/EU)
The units are not subject to this directive, because they are classied as „pressure-
keeping equipment“ and do not have a pressurized housing (see Art.1, clause 2.1.4).
The units are designed and manufactured in accordance to the Pressure Equipment
Directive.
The unit is NOT intended for use as an “equipment part with safety function (Art.1, clause
2.1.3).
If the units should be used as „equipment part with safety function" please contact the
manufacturer.
* Not all approvals are available with all models, see selection list for more information
** Relevant information for use in applications with WHG/VLAREM: see external documentation "Technical Description"
and notes to Proof Test on page 41
Approvals
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Mechanical installation
General Safety Instructions
Process pressure Improper installation may result in loss of process pressure.
Observe possible pressure limitation from the used ange type or in case of use of the
sliding sleeve (CN 7130).
Chemical resistance
against the medium
Materials of construction are chosen based on their chemical compatibility (or inertness) for
general purposes. For exposure to specic environments, check with chemical compatibility
charts before installing.
Fastening of the
threaded process
connection
Mounting torque for the thread may not exceed 40 Nm (metal thread)/ 20 Nm (plastic
thread). Use a open-end wrench. Do not fasten by turning the housing, for this will destroy
the unit.
EHEDG approval/
Food grade material
The materials are available for the use under nornal and predictable applications (according
to directive 1935/2004 Art.3). Other conditions can inuence the safety.
General Mounting instructions
At the end of the
pipe before the
probe
Midway along
the pipe
At the process
connection or
ange
Handling
precautions
To prevent damage of the pipe extension, all CN 7130 units with a pipe longer than 2 m (6.5
ft), must be suppported at these three points when lifting from a horizontal position
Sliding sleeve Tighten both straining screws with 15 Nm to obtain
resistance against pressure
Direction of the
cable glands
(enclosure Ø65mm)
When the unit is mounted from the side, ensure, that the cable glands face downwards and
are closed to avoid water penetration into the housing.
The enclosure can be rotated against the process connection after mounting.
Sealing Ensure proper seal of the process connection thread in case of process pressure.
Hygienic process
connection
Observe that the correct "On site process connection" is present, see page 9.
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CN 7000
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
page
Liquid applications - Mounting instructions
Mechanical installation - Liquid applications
Vertical vessel
AFull detector horizontal
BDemand or empty detector horizontal
CEmpty detector vertical from the bottom
CAUTION
Observe:
• General distances of the probe (see page 19)
• Distance to material ow (lling)
• Max. permitted mechanical load (see page 14)
CN 7120 /
CN 7121
Horizontal vessel
EFull detector vertical
FDemand or empty detector horizontal
GEmpty detector vertical from the bottom
Horizontal pipe
HFull detector vertical
JDemand or empty detector horizontal
KEmpty detector vertical from the bottom
Vertical pipe
LFull, demand or empty detector horizontal
Bypass
MFull detector horizontal
NDemand or empty detector horizontal
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CN 7000 gi060821 17

Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
page
Mechanical installation - Liquid applications
CN 7130
Vertical vessel
Full, demand or empty detector:
AVertical
BVertical with sliding sleeve
CVertical with long mounting socket
DVertical from bottom
CAUTION
Observe:
• General distances of the probe (see page 19)
• Distance to material ow (lling)
• Max. permitted mechanical load (see page 14)
Horizontal vessel
EFull, demand or empty detector vertical
FVertical with sliding sleeve
GVertical with long mounting socket
Bypass
H Full, demand or empty detector vertical
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
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Mechanical installation - Liquid applications
Observe min. distance
• between two probes
• to metal vessel wall
Distances of the
probe
CORRECT
Probe leads
into the product
WRONG
Socket too
long
Observe socket length
CN 7150 CAUTION
Observe:
• Distance of the probe to the vessel wall
(see page 19).
Consider that the hanging probe can move
sidewards with material movement.
• Distance to material ow (lling).
• Max. permitted mechanical traction
(see page 14).
Vertical vessel
Full, demand or empty detector:
AVertical
BVertical with long mounting socket
Horizontal vessel
Full, demand or empty detector:
CVertical
DVertical with long mounting socket
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Level limit switch
Series CN 7000 - Relais DC and 8/16mA
Technical Information / Instruction manual
page
Mechanical installation - Solid applications
Solid applications - Mounting instructions
AFull detector horizontal or oblique.
Slight incline mounting helps remaining material to
fall off more easily
BDemand or empty detector horizontal or oblique.
Slight incline mounting helps remaining material to
fall off more easily. Protective angle recommended
depending on load and abrasion of the material
CEmpty detector oblique from the bottom
DEmpty detector in the silo outlet
CN 7120 /
CN 7121
CN 7130
CN 7150
AFull detector vertical
BFull detector with sliding sleeve
CFull detector horizontal or oblique. Slight incline
mounting helps remaining material to fall off more
easily
DDemand or empty detector horizontal or oblique.
Slight incline mounting helps remaining material to
fall off more easily. Protective angle recommended
depending on load and abrasion of the material
CAUTION
Observe:
• General distances of the probe (see page 21)
• Distance to material ow (lling)
• Max. permitted mechanical load (see page 14)
• Wearing due to abrasive bulk material
AFull, demand or empty detector vertical
CAUTION
Observe:
• General distances of the probe (see page 21)
• Distance to material ow (lling)
• Max. permitted mechanical load (see page 14)
• Wearing due to abrasive bulk material
CAUTION
Observe:
• Distance of the probe to the silo wall (see page 21)
Consider that the hanging probe can move sidewards
with material
• Distance to material ow (lling)
• Max. permitted mechanical traction (see page 14).
Empty detector: Do not install in the center of the silo
due to high traction with moving material
• Wearing due to abrasive bulk material
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