404392 – Level Probe for liquids - Critical applications

Product Details

The JUMO MAERA S28- 404392 level probe is used for the continuous hydrostatic level measurement in liquids. Filling heights from 2.50 to 100 mWS (water column) can be achieved in ventilated tanks.

When the level probe is immersed into a liquid, a liquid column emerges above the probe. The liquid column increases as the probe is immersed deeper into the liquid and creates a hydrostatic pressure on the measuring system by the force of its weight. The measured pressure is transmitted as a standard signal. The signal is linearly proportional to the rising liquid column.

The surrounding pressure is achieved through a special cable with integrated pressure equalization hose. Any variations in air pressure are therefore automatically compensated and the surrounding pressure is taken into account. The installation can be performed in both indoor and outdoor areas.

The level probe is equipped as standard with an integrated overvoltage protection, which protects the level probe against damage in the event of lightning strikes in surrounding water. With regard to the temperature-dependent density of a liquid, the medium temperature can be recorded with an integrated temperature sensor Pt100 during level measurement. This temperature value can then be used for compensation.

The level probe is designed for use in drinking water (ACS – “Attestation de Conformite Sanitaire”).

Further information on our level probes from the JUMO MAERA series can be found in the brochure “Level Probes – Hydrostatic Level and Filling Level Measurement” in the Documentation category.

JUMO 404392 Features:

• Level probe for continuous level measurement in liquids
• Measuring ranges: 250 mbar to 10 bar (2.5 to 100 mH2O)
• Medium temperature: 0 to 50 °C
• Piezoresistive silicon sensor
• Accuracy: 0.3 % MSP (linearity)
• Excellent long-term stability
• High overload resistance
• Integrated overvoltage protection
• Reverse-polarity protection
• Drinking water approval
• Integrated temperature sensor Pt100 also available
• Suitable for indoor and outdoor installations

Connection example: