Appendix C
Capacitive Liquid Level Sensors
Appendix C
Carlo Gavazzi
Appendix C
Proximity Sensors Capacitive
Thermoplastic Polyester Housing
Types CA, M18, M30, DC, Teach-in
PL
TRI
LD™
IE
ESH
• Featuring TRIPLESHIELD™ Sensor Protection
• Sensing distance: 0.5 - 12 mm (M18) and
1.0 - 30 mm (M30)
• Teach-in of sensing distance via push-button or
COM-input
• Automatic detection of NPN or PNP load
• Selectable make or break switching by means of
Teach-in function
• P rotection: Short-circuit, transients and reverse polarity
• Humidity compensation
• Alarm output
• 5 years of warranty
• On request: Delay on output. New line autotune to
compensate for heavy dirt build-up
Ordering Key
CA18CLC12BPM1
switching points can be
altered by means of the
Teach-in function. 3-wire DC
output with selectable make
(NO) or break (NC) switching
and NPN Alarm. Grey
polyester housing with 2 m
PVC cable or M12 plug.
Capacitive proximity switch
Housing diameter (mm)
Housing material
Housing length
Detection principle
Rated operating dist. (mm)
Output type
Output configuration
Connection type
Housing diameter
Rated operating distance
(Sn)
Ordering no.
Cable
Ordering no.
Plug
M18
M 30
12 mm
30 mm
CA18CLC12BP
CA30CLC30BP
CA18CLC12BPM1
CA30CLC30BPM1
Capacitive proximity switches with a sensing distance
of either 8 mm flush mounted in metal or 12 mm nonflush mounted for the M18
version, and either 16 mm
flush mounted in metal or 30
mm non-flush mounted for
the M30 version. The
Appendix C
Product Description
Type Selection
Specifications
Sensing range (Sd)
CA18CLC12
0.5 - 12 mm
factory set at 8 mm
CA30CLC30
1.0 - 30 mm
factory set at 15 mm
Sensitivity
Adjustable (Teach-in)
Effective operating dist. (Sr)
0.9 x Sn Sr 1.1 x Sn
Usable operating dist. (Su)
0.8 x Sr Su 1.2 x Sr
Repeat accuracy (R)
5%
Hysteresis (H)
Depending on Teach-in
Rated operational volt. (UB)
10 to 40 VDC (ripple incl.)
Ripple
10%
Rated operational current (Ie)
250 mA (continuous)
No-load supply current (Io)
12 mA
Voltage drop (Ud)
2.5 VDC @ max. load
Protection
Short-circuit, reverse
polarity, transients
TRIPLESHIELDTM
protection-EMC
IEC 1000-4-2/EN 61000-4-2 30 kV
IEC 1000-4-3/EN 61000-4-3 > 15 V/m
IEC 1000-4-4/EN 61000-4-4 3 kV
IEC 1000-4-6/EN 61000-4-6 > 10 Vrms
Specifications are subject to change without notice (21.11.03)
Frequency of operating
cycles (f)
Indication
For output ON
For safe/unsafe
Environment
Degree of protection
Operating temperature
Storage temperature
Housing material
Body
Cable end
Nuts
Connection
Cable
Plug (M1)
Cable for plug (M1)
Weight
Cable version - M18 / M30
Plug version - M18 / M 30
Approvals
CE-marking
15 Hz
LED, yellow
LED, green
IP 68
-20° to +85°C ( -4° to +185°F)
-40° to +85°C (-40° to +176°F)
Grey, thermoplastic polyester
Polyester, softened
Black, PA12 Grilamid
Grey, 2 m, 4 x 0.25 mm2
Oil proof, PVC
M12 x 1
CON.1A-series
110 g/160 g
30 g/70 g
UL, CSA
Yes
1
CA, M18, M30, DC, Teach-in
Dimensions
CA30
CA18
89.55
50
M18 x 1
50
23
M18 x 1
LED
Cable
89.2
23
50
LED
M12
Plug
99.2
23
M30 x 1.5
50
90.45
23
M30 x 1.5
LED
Cable
LED
M12 x 1
Plug
Appendix C
Adjustment Guide
The environments in which
capacitive sensors are installed can often be unstable regarding temperature, humidity,
object distance and industrial
(noise) interference. Because
of this, Carlo Gavazzi offers
as standard features in all
TRIPLESHIELD™ capacitive
sensors a user-friendly sensitivity adjustment instead of
having a fixed sensing range,
extended sensing range to
accommodate mechanically
demanding areas, temperature
stability to ensure minimum
need for adjusting sensitivity if
temperature varies and high
immunity to electromagnetic
interference (EMI).
Note:
Sensors are factory set
(default) to nominal sensing
range Sn.
• Chemical Industry
Cleansers, fertilisers, liquid
soaps, corrosives and petrochemicals.
• Packaging Industry
Package inspection for level
or contents, dry goods,
fruits and vegetables, dairy
products.
tive sensor is referenced to a
grounded metal plate (ST37).
For additional information
regarding dielectric ratings
of materials please refer to
Technical Information.
Installation Hints
Capacitive sensors have the
unique ability to detect almost all materials, either in liquid or solid form. Capacitive
sensors can detect metallic
as well as non-metallic objects, however, their traditional use is for non-metallic
materials such as:
• Plastics Industry
Resins, regrinds or moulded products.
To avoid interference from inductive voltage/
current peaks, separate the prox. switch power cables from any other power cables, e.g.
motor, contactor or solenoid cables
• Wood Industry
Saw dust, paper products,
door and window frames.
• Ceramic & Glass
Industry
Raw material, clay or
finished products, bottles.
Relief of cable strain
Materials are detected due to
their dielectric constant. The
bigger the size of an object,
the higher the density of material, the better or easier it is
to detect the object. Nominal
sensing distance for a capaci-
Protection of the sensing face
Switch mounted on mobile carrier
A proximity switch should not serve as
mechanical stop
Any repetitive flexing of the
cable should be avoided
Not correct
Correct
The cable should not be pulled
Delivery Contents
• Capacitive switch: CA..CLC..BP..
• Packaging: Cardboard box
• Installation & Adjustment Guide (MAN CAP ENG/GER)
2
Accessories
Plugs CON.1A.. series.
For further information please refer to “Accessories.
Specifications are subject to change without notice (21.11.03)
CA, M18, M30, DC, Teach-in
Teach-in Guide
Adjustment - Background
No target present
Press push-button >3 seconds until LED´s are flashing one time per second. The background will be calibrated when the
push-button is released during the following 3 seconds
Push-button
LED - Green
LED - Yellow
Time (sec)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Adjustment - Object
Target present
Press push-button >6 seconds until LED´s are flashing two times per second. The object will be calibrated when the pushbutton is released during the following 3 seconds
Push-button
LED - Green
Appendix C
LED - Yellow
Time (sec)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Adjustment - NO - NC
Press push-button >9 sec. until LED´s are flashing three times per second. The status of NO-NC will toggle when the pushbutton is released during the following 3 seconds
Push-button
LED - Green
LED - Yellow
Time (sec)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Releasing the push-button after 12 sec. returns the sensor to factory settings.
Wiring Diagrams
BN+ (1)
The PNP- or NPN-load will automatically be
detected.
IALARM < 20mA
By means of the Teach-in wire, the functions
described in the Teach-in Guide can be setup.
BK (4)
ILOAD < 250mA
WH (2)
Teach-in
BU- (3)
It is possible to Teach-in more sensors at the
same time by connecting the WH-wires in
parallel to the common ”-” supply.
(#): Plug connections
Important: If alarm output (WH-wire) is
unused, it has to be terminated to +supply
Specifications are subject to change without notice (21.11.03)
3
Proximity Sensors Capacitive
Amplifier, Capacitive, Optical
Type SV 190 (Charging/Discharging)
Appendix C
• Level control relay
• Max.-min. control of charging/discharging
• For use with refractive optical sensors or
capacitive sensors
• Controls liquid/granulate presence or absence
with one sensor, or liquid/granulate level within
max./min. limits with two sensors
• Normal or inverted function selectable
• 10 A SPDT output relay
• LED-indication: relay ON
• AC or DC power supply
Product Description
Ordering Key
Level control relay for transparent liquids or granulates
which can control one or two
levels of charging or discharging. For use with opti-
Type
Power supply
cal sensors (VP..) or capacitive sensors (DR.. or EC..).
Open collector NPN-types
only.
SV 190 230
Type Selection
Plug
Output
Supply: 24 VAC
Supply: 115 VAC
Supply: 230 VAC
Supply: 24 VDC
Circular
SPDT
SV 190 024
SV 190 115
SV 190 230
SV 190 724
Input Specifications
Supply Specifications
Sensor supply
through pins 7 and 9 (+)
Power supply AC-types
Rated operational voltage
through pin 2 & 10
230
115
024
Rated insulation voltage
Rated impulse withstand
voltage
Short-circuit protection
Sensor input
One level
Two levels
Operating frequency
Input resistance
Cable resistance
12 VDC, stabilized
max. 60 mA
Yes
Pin 5
Pin 5 and 6
Max. 5 Hz.
25 kΩ
Max. 100 Ω
Overvoltage cat. II (IEC 60664)
230 VAC ± 15%
115 VAC ± 15%
24 VAC ± 15%
≥ 2,0 kVAC (rms)
4 kV (1,2/50 µs)
(line/neutral)
Power supply DC-types
Installation cat. II (IEC 60664)
Rated operational voltage 724 24 VDC ±15% (pin 2 pos.)
Rated insulation voltage
None
Rated transient protection volt. 800 V (1.2/50 µs)
General Specifications
Time delay before availability
Indication for
Output ON
Environment
Degree of protection
Pollution degree
Operating temperature
Storage temperature
Approvals
CE-marking
0.5 s
LED, red
IP 20 B
3 (IEC 60664)
-20 to +50ºC (-4 to +122ºF)
-50 to +85ºC (-58 to +185ºF)
UL, CSA
Yes
Specifications are subject to change without notice (20.08.01)
1
SV 190
Output Specifications
Mode of Operation
Output
Rated insulation voltage
Example 1
One sensor/one level
The relay operates when the
sensor is immersed and
releases when the sensor is
no longer immersed. When
pins 7 and 8 are interconnected (dotted line), the relay is
inverted.
Operating frequency
Insulation voltages
Rated insulation voltage
Rated transient protection
voltage
≥ 2.0 kVAC (rms)
(cont./elec.)
4 kV (1.2/50 µs) (cont./elec.)
(IEC 60664)
Accessories
Sensors, open collector NPNtypes:
Optical: VP
Capacitive: DR, EC
Bases
Hold down spring
Base covers
Front mounting bezel
Example 2: Discharging
Two sensors/two levels
The relay operates when the
upper sensor (max. level) is
immersed and releases when
the lower sensor (min. level) is
no longer immersed. When
pins 7 and 8 are interconnected (dotted line), the relay is
inverted.
Example 3: Charging.
Two sensors/ two levels
In fill-up applications inverted
function (pins 7 and 8 connected) should always be used
and the pump alwalys be
supplied through pin 3 (relay
ON).
The relays releases at desired
max. level making the pump
stop. In case of power supply
interruptions, the relay releases and the pump stops, thus
overflow is prevented.
Sensor characteristics
The optical sensors VP for liquids must not be exposed to
more than 100 lux from ambient light sources.
The capacitve sensors DR
and EC are for solid, fluid or
granulated substances. The
activating distance depends
on the physical and electrical
characteristics of the object
to be detected.
Note: Solid or fluid conductors are detected at a greater
distance than light or porous
insulators.
Wiring Diagrams
Example 1
Example 2 and 3
1 sensor = 1 level
Max. or min. control
2 sensors = 2 levels
Max. and min. control
Max. or Min.
Max.
Min.
Power Supply
1 = signal
2=3=+
Power Supply
Operation Diagrams
Example 1
Power supply
1 sensor = 1 level, max. or min. control
Example 2 and 3
2 sensors = 2 levels, max. or min. control
Sensor immersed
Max.
Sensor immersed
Min.
Relay on
Inverted function: Relay on
2
Specifications are subject to change without notice (20.08.01)
Appendix C
Contact ratings ( Ag-Cd0)
Resistive loads
AC 1
DC 1
or
Small inductive loads AC 15
DC 13
Mechanical life
Electrical life
AC 1
SPDT relay
250 VAC (rms)
(cont./elec.)
µ (micro gap)
10 A/250 VAC (2500 VA)
1 A/250 VDC (250 W)
10 A/25 VDC (250 W)
2.5 A/230 VAC
5 A/24 VDC
≥ 30 x 106 operations
≥ 2.5 x 105 operations
(at max. load)
≤ 7200 operations/h
General Accessories
Sockets
Types S, D, ZPD, ZVD
Socket types S 008, S 011
For mounting on printed circuits.
S 008
8-pole circular socket.
S 011
11-pole circular socket.
Appendix C
Socket types S 108, S 111
For mounting on or below a chassis with soldering and plug
connections (AMP 187).
S 108
8-pole circular socket.
S 111
11-pole circular socket.
Socket types S 108 A, S 111 A
For mounting on or below a chassis or printed circuits.
S 108 A
8-pole circular socket.
S 111 A
11-pole circular socket.
Specifications are subject to change without notice (25.06.99)
Material
Colour
Material of spring
Printed circuit hole diameter
Approvals
Glasfilled Noryl SE 1
Light grey
Tin-plated brass
Min. 1.5 mm
UL, CSA
Material
Colour
Material of spring
Approvals
Glasfilled Noryl SE 1
Light grey
Tin-plated brass
UL, CSA
Material
Colour
Material of spring
Approvals
Glasfilled Noryl SE 1
Light grey
Tin-plated brass
UL, CSA
1
S, D, ZPD, ZVD
Sockets (cont.)
Rating
Installation/pollution deg.
Degree of protection
Material
Socket
Contact spring
DIN-rail retaining spring
Approvals
10 A/250 VAC (IEC 60664)
Cat. III/2
IP 10 (IEC 60529)
Socket type D 411 B
Socket with front screw connections. For mounting by two
front screws or for snap-mounting on DIN-rail (DIN EN 50
022). With captive cable clamps and cross-cut terminal
screws. For devices with spade plugs (4.8 x 0.5 mm).
Text markers, type no. tags: e.g. Weidmüller type SG 10
D 411 B
11-pole spade socket.
Rating
Installation/pollution deg.
Degree of protection
Material
Socket
Contact spring
DIN-rail retaining spring
Approvals
10 A/250 VAC (IEC 60664)
Cat. III/3
IP 10 (IEC 60529)
Socket types ZPD 8, ZPD 11,
Socket for mounting on DIN-rail (DIN EN 50 022).
Text markers, type no. tags: e.g. Weidmüller type SG 10
Rating
Installation/pollution deg.
Degree of protection
Material: Socket
10 A/300 VAC (IEC 60664)
Cat. III/2
IP 20 (IEC 60529)
Black, thermoplast. resin
(UL 9040 HB)
Nickel-plated copper alloy
Stainless steel wire
UL, CSA
Socket types S 408, S 411
Socket with front screw connections. For mounting by two
front screws or for snap-mounting on DIN-rail (DIN EN 50
022). With captive cable clamps and cross-cut terminal
screws. For devices with circular plugs.
Text markers, type no. tags: e.g. Weidmüller type SG 10
S 408
S 411
8-pole circular socket.
11-pole circular socket.
Light grey, Noryl SE1
Tin-plated brass
Stainless steel wire
UL, CSA
ZPD 8
8-pole circular socket.
ZPD 11
11-pole circular socket.
Contact spring
DIN-rail retaining spring
Approvals
Black, Noryl SE1
Tin-plated brass
Stainless steel wire
UL, CSA
ZPD 11
2
Specifications are subject to change without notice (25.06.99)
Appendix C
S 408
S, D, ZPD, ZCD
Sockets (cont.)
Socket types ZVD 8, ZVD 11,
Socket for mounting on DIN-rail (DIN EN 50 022).
ZVD 8
ZVD 11
8-pole circular socket.
11-pole circular socket.
Rating
Installation/pollution deg.
Degree of protection
Material - Socket
Contact spring
DIN-rail retaining spring
10 A/300 VAC (IEC 60664)
Cat. III/2
IP 10 (IEC 60529)
Black, thermoplast. resin
(UL 94 V-1)
Nickel-plated copper alloy
Polyester
Appendix C
ZVD 11
Specifications are subject to change without notice (25.06.99)
3