Icos LA12N-40 User manual

180°
L2
A1
A2
Reed Switch
K8*
Reed Switch
KD*
+
+
2K2 - 2W
*
D = 20 ~ 40m
22R 5W
220R 5W
R
R
K8*
L2
*
A2
L1
A1
On datasheets.icos.us available technical specications
Flow Switches and Level Switches for liquids
Reed Switches are hermetically sealed
contacts actuated by a magnetic eld.
The life expectancy of a reed switch refers to a kind of load to be
used. Reed Switches of the highest reliability are applied in our
sensors, and their life expectancy can reach above two million
operations. However, when they are switching lamps, inductive or
capacitive loads, this number may decrease.
Switching Power
It is important to consider that the power specied by an electrical
load is often referred to the permanent working state.
For higher power, use an auxiliary relay or contactor as recom-
mended below.
Reed Switch 20W/VA: Protect the electrical contact of your sensor
Electrical contact of sensors - Attention to install
The sensors work in all voltage and current ranges displayed in the table bellow:
Operating Voltage Max. Switching Power Max. Switching Current Peak Current
110Vac 20VA 0.2A 0.5A @20ms
220Vac 20VA 0.1A 0.5A @20ms
5Vdc 2.5W 0.5A 1A @20ms
12Vdc 5W 0.5A 1A @20ms
24Vdc 10W 0.5A 1A @20ms
24Vac: NOT recommended
! Never connect the sensor to a
motor, pump, lamp or any other
load over 20W.
Always use a contactor or relay.
NO/NC - SPST
Contact ON/OFF
IP66
Switch
Output
Enclosure Rating
Resistor 220R 5W
in series is required
Resistor 22R 5W
in series is required
For distances longer than 40m,
use 24Vdc voltage (without the resistor)
K8* Filter mounted in parallel
with the coil of an AC contactor,
increases the contact life.
KD* Filter mounted in parallel
with the coil of a DC relay,
increases the contact life.
*For sale on accessories.icos.us
Level Switches
Manual: Models for External Mounting
IMPORTANT!
YOU MUST CHECK BEFORE INSTALLATION
Connection with cable
length 20 to 40 meters:
contactor pump
Operation
NC
Normally Open Normally Closed
Typical connection to contactor
Term of Warranty
Siemens 3RT1015 Contactor
Initial: 31.7VA
Rated: 5.1VA
0.1µF 400V
BY448
or
1N4007
Important: For distances greater than 40m, use 24Vdc voltage.
•Timing relay
•Frequency inverter
•Etc.
Connection with:
- Timing Relay
- Frequency Inverter
For installation with Relay Coupler,
use 4K7 10W resistor
Important: For installation with relay coupler, use 4K7 10W resistor.
Manual
B.03/Feb2019
icos.us
Connection with
Contactor 24Vdc
KD Filter is required
*
*
Connection with Contactor
Should be less than 20W
Initial Power
Rated Power
Questions? Call us BEFORE you install:
+55 (15) 3032.9190
levelsensor.icos.us | datasheets.icos.us | videos.icos.us
NO
NO or NC
rotating the
sensor
Snubber
Filter
For installations according to this guide:
02 (two) years warranty. 
All sensors have been tested and approved during the manufacture process.
Chemical products require tests by the customer to verify compatibility
with the constructive material of the sensor.
Liquids with ferrous particles require technical analysis: the sensor has
magnetic component inside.
Note: Reed Switches have reached over one million operations in
tests with contactor and K8* snubber lter.
*On accessories.icos.us check models and prices of Filters
PROTECTION PROCEDURES BELOW DESCRIBED CAN
IMPROVE THE REED SWITCH PERFORMANCE
• Switching inductive loads
? Risk of failure (welding of the Reed Switch Contact) due to CAPACITANCE, which
can occur depending on the distance and cable used in the connection to the contactor.
• Connecting the sensor to a contactor in long distances, use resistor:
This resistor dampens the peak voltage caused by the
capacitance of cables and electronic equipment input.
• Connecting the sensor to an electronic equipment:
+55 (15) 3032.9190
Contactor
Contactor

62
1/2”NPT
34
18
48
Ø17
400
67 37
48
38
Ø17
17
1
3A
-coding
62 1/2”NPT 7
18 12 18
48
Ø17
4001869 34
48
32
Ø17
1/2”NPT
67
M16 x 2
30
48
Ø17
400
With 1/2”NPT Thread
 LA12N-40 LA22N-40 LA32N-40 LA32-M12
Material POM PP PPA PPA
Operating temperature range
-10°C to 100°C -10°C to 100ºC -10°C to 125°C -10°C to 125°C
Maximum operating pressure 2bar 2bar 2bar 2bar
Color White Dark blue Black Black
Liquid minimum density (SG) 0.76 0.68 0.70 0.70
Output connection 40cm cable 40cm cable 40cm cable M12 plug
 LA32N2-40
Material PPA
Operating temperature range
-10°C to 125°C
Maximum operating pressure 2bar
Color Black
Liquid minimum density (SG) 0.70
Output connection 40cm cable
 LA32NP
Material PPA
Operating temperature range
-10°C to 125°C
Maximum operating pressure 2bar
Color Black
Liquid minimum density (SG) 0.70
Output connection DIN 43650
 LA31N-M12
Material PPA
Operating temperature range
-10°C to 125°C
Maximum operating pressure 2bar
Color Black
Liquid minimum density (SG) 0.70
Output connection M12 plug
• Electrical contact: Reed Switch 20W/VA;
• Mounting: 1/2”NPT thread;
• Sealing: Sealant tape;
• NO or NC, by rotating the sensor 180°.
• Electrical contact: Reed Switch 20W/VA;
• Mounting: 1/2”NPT thread;
• Vedação: Sealant tape;
• NO or NC, by rotating the sensor 180°.
• Electrical contact: Reed Switch 20W/VA;
• Mounting: 1/2”NPT thread;
• Vedação: Sealant tape;
• NO or NC, by rotating the sensor 180°.
• Electrical contact: Reed Switch 20W/VA;
• Mounting: 1”NPT thread;
• Vedação: Sealant tape;
• NO or NC, by rotating the sensor 180°.
With Extra 1/2”NPT Thread for Conduit or Connection HeadWith DIN 43650 Output Connection
With M12 Plug + 1”NPT Thread
With Compression Gasket for Ø22mm Hole
 LA322E-40 LA322E-M12 LF322E-M12
Material PPA PPA PPA
Operating temperature range
-10°C to 125°C -10°C to 125°C -10°C to 125°C
Maximum operating pressure 2bar 2bar 2bar
Color Black Black Black
Liquid minimum density (SG) 0.70 0.70 0.66
Sealing (rubber type) NBR NBR EPDM
Output connection 40cm cable M12 plug M12 plug
• Electrical contact: Reed Switch 20W/VA;
• Mounting: In through hole of Ø22mm;
• Sealing: Compression gasket;
• NO or NC, by rotating the sensor 180°.
Wall
max.: 18mm
Hex nut
24mm
Wall
max.: 5mm
Sensors for detection of increased or decreased liquid levels inside the tank.
External Side Mounting
Observe the bump
indicating the
mounting position
Downward: NO Upward: NC
1”NPT in aluminum
M12 Plug Sensors Installation
Constructive Materials
M12 Connector
Level
Switch
Contact 1,3
• 2 pins
3-BL
1-BR
DIN 43650 Connector
(Included)
Flow Switches and Level Switches for liquids
Dimensions in millimeters
On levelsensor.icos.us check models and prices of Level Switches
POM Polyacetal: Ideal for water, fuels and lubricants.
PP Polypropylene: Ideal for chemical products. NOT suitable for fuel.
PPA Polyphthalamide: Best mechanical and temperature resistance.
Compression
gasket
Level
Switch
Tank wall
Minimum
radius 50mm
Compression
gasket