Lowara 10SV 05N022 1015L1194 [56/72] Protection sensor against dry running

Lowara 10SV 05K022 1015L119C [56/72] Protection sensor against dry running
56
PROTECTION SENSOR
AGAINST DRY RUNNING
Sensor for detecting the presence of water based on the optoelectronic
principle, therefore non-invasive and with no moving parts. The sensor features
an electronic contact (on/off) which stops the pump if there is no water in
the seal area.
The sensor opens the electric contact if there is no water after they factory-
set delay (10 seconds) elapses. The sensor is supplied as a kit complete with
2 metres of cable, an EPDM O-ring gasket and a stainless steel adapter.
General operating features
The sensor can be fitted directly on the filling cap of the e-SV
TM
series of pumps.
Operation is independent of the hardness and conductivity of the water. The sensor cannot detect frozen liquids.
Available in two power versions depending on foreseen use:
21÷27 Vac, universal solid state output for external relay at 24 Vac (21÷27 Vac, 50 mA).
15÷25 Vdc, NPN output at 25 V (10 mA) for HYDROVAR
TM
inverter.
Operation is based on the change in the
refractive index on the surfaces.
The optic sensor comprises a glass cap
(C) containing a transmitter (T) and an
infrared receiver (R).
If there is no liquid, all the infrared light
emitted by the transmitter is internally
reflected by the surface of the glass cap
of the receiver.
The electronic contact will be open.
If liquid is present, the refractive index of
the surface changes. Most of the infrared
light emitted by the transmitter is disper-
sed in the liquid.
The receiver receives less light and the
electronic contact is closed.
Operating principle
Materials:
- Body in AISI 316L stainless steel
- Glass optic cap
- EPDM gasket
Liquids: clean water, demi water. Operation is not affected by the hardness and conductivity of the liquid. To check the suitably
of other liquids, contact the Lowara technical assistance service providing the characteristics of the liquid.
Temperature of liquid: -20°C÷+120°C (cannot be used to detect frozen liquids).
Ambient temperature: -5°C ÷+50°C
Maximum pressure (PN): 25 bar
Connector: 3/8 “ (3/8” x 1/2” adaptor plug included in the Kit)
Dimensions: 27x 60 mm
IP55 protection
Electrical characteristics:
- Input voltage SENSOR KIT DRP-GP: 21÷27 Vac
SENSOR KIT DRP-HV: 15÷25 Vdc
- Output SENSOR KIT DRP-GP: universal solid state
21÷27 Vac (50 mA) for 24 Vac external relay
SENSOR KIT DRP-HV: NPN 25 V (10 mA) for HYDROVAR
TM
inverter
- Alarm delay: 10 seconds (factory setting)
- FROR cable 4 x 0,34 mm
2
(PVC-CEI 20-22) 2 metres long.
Disegnatore
M. Caldarde
Data
26 novembre 2012
Scala:
/
Revisione
A
Modello
sensore ottico di livell
o
Note
deriva daSOL_M0004_A_SC
Codice
SOL
_
M0005
_
A
_
SC
SOL_M0005_A_SC
C
TR
G:\R&D_doc\Product-Data\SensoreOtticoDiLivello_iAlert\50hz\Drawings\Catalogue\SOL_M0005_A_sc
SPECIFICATIONS

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