L-EPD

Conductive level indicators
Control of liquids

Intended use

The conductive control level relay L-EPD with the conductive probes is used to keep the level in a deposit according to the level of a well.

Conductive probes could be supplied under request, as well as the undecal socket for the mounting in a DIN rail.

Function

The conductive level indicator L-EPD bases its work in the conductivity of the liquids to control.

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 deposit relay operates when the liquid reaches the probes of the well activating the pump that fills the deposit until the level of liquid reaches the maximum probe and the relay releases. The relay will not operate until the level of liquid goes below the minimum electrode probe. If the level of liquid goes below the minimum level of the well while the pump is activated, it stops. When the level of liquid reaches up to the well probe, it releases again.

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-EPD – ref: 2750-2...
Supply voltage:
2750-2-230	230 V AC (50 – 60 Hz)
2750-2-115	115 V AC (50 – 60 Hz)
2750-2-024	24 V AC (50 – 60 Hz)
Power consumption	3.2 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.
Max. 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	0,28 Kg
Current in probes line	4 mA
Voltage in probes line	24 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
Buttons	Technyl
Terminals	Brass