HYDAC ENS 311P-8-0520-000-K Level and Temperature Switch

Description

The HYDAC ENS 311P is an electronic level and temperature switch designed for high-precision monitoring in fluid technology systems, especially in hydraulic reservoirs. This model combines level and temperature measurement in a single, compact unit. It features a 4-digit digital display for at-a-glance readings and easy programming of the switching points via push-buttons. With up to four programmable PNP switching outputs, it offers flexible integration into control systems for alarming or process control. The rugged construction ensures long-term reliability in harsh industrial environments.

Specifications

• Manufacturer: HYDAC
• Model: ENS 311P-8-0520-000-K
• Part Number: 909829
• Probe Length: 520 mm
• Supply Voltage: 18 to 35 VDC
• Outputs: 4 PNP switching points
• Connection: M12x1 male connector, 8-pin
• Display: 4-digit LED
• Sealing: FKM (Viton)

Label Info

• Seriennr.: 429E030935
• Voltage: 18..35V DC
• Current: max 2.47A

Application

This sensor is ideal for continuous level and temperature monitoring in hydraulic power units, lubrication systems, and coolant tanks. It is commonly used in machine tools, plastic injection molding machines, and mobile machinery.

Country of Origin

Made in Germany.

CO2 Impact

By purchasing this pre-owned item, you are contributing to a circular economy and helping to avoid approximately 20 kg of CO2 emissions associated with the production of a new unit. This is comparable to the emissions from driving a car for 100 kilometers.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

The switching points are programmed using the three push-buttons on the display head. The device enters programming mode by pressing a specific key combination, allowing you to set the level or temperature thresholds for each of the four outputs. Refer to the official HYDAC operating manual for the exact key sequence and menu structure.

The 'K' in the model number specifies that the sensor uses FKM (Viton) seals. FKM is highly resistant to mineral oils, synthetic hydraulic fluids, fuels, and many chemicals, making it suitable for most standard hydraulic and lubrication applications. However, always verify fluid compatibility before installation.

By default, the 4-digit LED display shows the current fluid level as a percentage of the probe length. The user can typically cycle through to display the fluid temperature in degrees Celsius or Fahrenheit via the push-buttons. Both level and temperature values are continuously monitored.

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Last Update: March 13, 2026