Description

Level emptying control relay for artesian holes or well, with protection of submersible electric pumps against lack of water.

Level control in conductive liquids through two level probes (minimum and mass), with protection for maximum level and possibility of timing selection for the minimum level probe (100 – 550 secs.)

Adjustable sensitivity, according to the liquid conductivity – selected in the front button 〔9 – 43〕/100 KΩ

Applications

• Control of level in conductive liquids, through three probes (minimum, maximum and mass), with possibility of timing for the probe of minimum
• Borehole or well control
• Protection of electric pumps from lack of water
• Sensitivity adjustment and timing

Operation

MODE A – Power the relay (green LED lights up – A.1)

The “S1” contact will arm when the liquid level reaches the maximum level probe (terminal 5) (green LED lights up – “N.A.” no water).

The “S1” contact disarms when the liquid level drops from the minimum level probe dimension (terminal 6).

MODE B – (Shunt 8-9) – Timing

When the liquid reaches the minimum level probe (terminal 6), the “t” timer (adjustable from the front panel – from 100 to 550 sec.), at the end of which the “S1”.