E
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ELECTRIC/TECHNICAL DIVISION
INSTALLATION INSTRUCTIONS
DESCRIPTION
: CL/19 is a level control for conductive liquids, modular enclosure (35 mm) for 46277 DIN rail.
Selection of detection sensitivity (HIGH - LOW) and functions (FILLING o DRAINING ) via microswitches.
The low alternate current applied on the sensors guarantees safety of the CL/19 and eliminates the
undesired effects of electrolysis.
SR 15.19
230V
~
SR 15.49
110V
~
SR 15.59
24V
~
WARNING: CL/19 does not work with: DISTILLED WATER, OILS, HYDROCARBONS,
LOW CONDUCTIVITY LIQUIDS.
WIRING DIAGRAM
Microswitch 2
for selection
High sensitivity (ON)
Low sensitivity (OFF)
Microswitch 1
for selection
g (ON)
Filling (OFF)
Drainin
Relay status indicator
= energised on filling
or draining
On
Off
= de-energised CL/19 on standby
GREEN LED
The following SERAI sensors can be
connected to the CL/19: R/1, R/2, R/4,
R/5, R/40, R/3A, R/3B and R/6.
If the tank is in conductive
material, terminal C (common) can be
connected directly to the tank.
WARNING:
SR 15.19 230 ÷ 240V ±10% 50/60Hz
~
SR 15.49 110 ÷ 125 V ±10% 50/60Hz
~
SR 15.59 24 V ±10% 50/60Hz
~
Flashing
= sensors in short circuit
Off
= mains power off
On
= mains power present
Mains power indicator led
SINCE
1965
The CL/19 is equipped with a top quality relay suitable
for virtually all applications. However, the use of
contactors is recommended to control motors with an
output higher than the specified values.
1
2
CL/19
ON
2
SELEZIONE SENSIBILITÀ
SENSITIVITY ADJUSTMENT
2
ON
ON
BASSA
ALTA
LOW
HI
CONTROLLO LIVELLO IN
LEVEL CONTROL
1
ON
1
ON
RIEMPIMENTO
FILLING
SVUOTAMENTO
EMPTYING
RED LED
Motors and pumps: 8A@230V
~
max ½ HP
35 X 90 X 70.5mm / 144 g.
IP 20 for terminals
Power supply:
12mA - 230V
~
Consumption on standby: ........................
1 changeover
Relay output: ............................................
Resistive: 10A @230V
~
Applicable load: ........................................
9V
~
Voltage on sensors: .................................
0,9mA Max
Current absorption of immersed sensors:
3 seconds
Activation threshold: ................................
-10 ÷ +60°C
Operating temperature: ...........................
Protection rating: .....................................
Insulation class: .......................................
Dimensions and weight: ..........................
If correctly installed, the device has no accessible parts.
SR 15.69
400V
~
SR 15.69 400 ÷ 415V ±10% 50/60Hz
~
m
C
A1
A2
M
NC NO
11
12
14
F
N
SR 15.19
230V~
SR 15.49
110V~
SR 15.59
24 V~
SR 15.69
400V~
C m M
E3
E2
E1
Maximum
cable length
250 m.
Section 1mm²
F / R
N / S
*
*
*
( R)
( )
( S)
-20 ÷ +70°C
Storage temperature: ...............................
95% condensate-free
Max. relative humidity: .............................
LEVEL CHECK OF CONDUCTIVE LIQUIDS
FOR FILLING OR DRAINING
CL/19
IP 40 for front panel
SINCE
1965
WARNING: If the
controlled liquid shows,
at the operating
temperature, fumes or
condensation, it is
recommended not to
use sensors with the
terminals close to each
other such as sensors
R/1 and R/2.
The condensing
humidity can cause a
bad working of the
level control.
If that is the case, it is
suggested to install
single sensors spaced,
see R/3A, R/4, R/5, R/6,
R/40 etc.
