Level Relay RU-303, RU-304

The level relay is intended for the pump locking systems to switch the electric circuits, including the spark-proof ones, when the controlled liquid in the pump reaches the pre-set level.

The level relay is applied to the automated control and protection systems used in the chemical industry.

The relay is manufactured in six versions differentiated by the pressure and density of the controlled liquid.

Controlled liquid parameters:

• Density - from 650 to 3000 kg/m³;
• Viscosity - from 30*10 ^-6m²/s (up to 0.07 Pa*c);
• Pressure - from 0 to 20 kgs/cm²;
• Temperature - from -40 to +120°C;

Performance:

• Operation error - max ±2.0 mm; ±5.0 mm; ±10.0 mm; ± 20.0 mm.
• DC;
• Active load;
• Voltage - (24±2.4) V;
• Current - 150 mA.
• Weight - max 1.5 kg.