L-ED5

Conductive level indicators
Control of liquids

Intended use

The conductive control level relay L-ED 5 with the conductive probes is used to control 5 levels or to keep between 2 points the level of conductive liquids like water, oil, chemical products, etc., in tanks, deposits, recipients, tubes, etc.

Conductive probes could be supplied under request.

Function

The conductive level indicator L-ED 5 bases its work in the conductivity of the liquids to control. They have 5 function LEDs associated with a relay. They can work independently or related.

It is necessary an electrode or a probe for each level and a common electrode. If the tank is conductive, it could be used as the common electrode.

The relay operates when the liquid reaches any level electrode probe and illuminates its LED channel. The relay releases pressing RESET button. If the RESET button is pressed meanwhile the liquid covers a probe, the relay releases and will be activated when the button wil be unpressed.

If the RESET button is pressed meanwhile there are two or more active channels, the relay will not be disengaged until all channels will be inactive.

If there is no supply meanwhile the liquid covers any probe, the relay releases and the LED switch off, turning back when it will be supply.

Mechanical connection

It is simple: the device has to be installed in a DIN rail using the undecal socket. The connection of the probe/s depends on each application and the requested models of the probes.

Dimensions

Approximate measures given in mm.

Technical data


Name	Level control relay
Type	L-ED-5 – ref: 2750-5-230...
Suppyl voltage	230 V AC (50 – 60 Hz)
Power consumption	1,6 VA
Galvanic isolation	Yes
Max. cable section	Ø 1 – 2.5 mm² of a good insulation cable and normally without shielding. If the cable are connected in parallel, it is recommended the installation of shielded cable and with earth connection. The minimum insulation resistance should be minimum 200 kΩ.
Maximum cable length	150 m, without shielding (depending on cable type and the application)
Relay output AC mod. for load:	Resistive AC 8 A / 250 V Resistive DC 0,25 A / 200 V, 8 A / 24 V Inductive AC 2,5 A / 250 V Inductive DC 4 A / 24 V
Function status	Relay engaged: red LED Under voltage: green LED
Ambient temperature	-20° C – +50° C
Relative humidity	30 % – 85 % HR
Protection	IP20B according to DIN EN60529
Weight	0,27 Kg
Current in probes line	0,155 mA
Voltage in probes line	6,2 V AC
Insulation voltage	2.500 V AC
Insulation resistance	>10 MΩ
Mechanical life	30x10 operations
Sensitivity:	7 kΩ – 100 k
Materials:
Housing	Cycoloy
LED visor	Lexan
Base	Technyl
Terminals	Brass