vp04e – infrared probe,10-40vdc,npn,no

Why Choose the Carlo Gavazzi VP04E Infrared Liquid Level Sensor?

The Carlo Gavazzi VP04E is a compact infrared photoelectric liquid level sensor designed for point-level detection in tanks, vessels and industrial liquid-handling equipment. Part of the Carlo Gavazzi VP series, it uses an optical sensing principle to detect when liquid reaches the probe tip, providing solid-state level monitoring without floats or other moving mechanical components.

The VP04E incorporates an infrared emitter, receiver and electronic amplifier within a self-contained sensor assembly. Liquid contacting the optical sensing tip changes the internal reflection of the infrared light, allowing the sensor electronics to detect the change and operate its switching output.

With a 10–40 V DC supply and NPN normally open (NO) transistor output, the VP04E is designed for straightforward integration with compatible PLCs, relays and industrial control equipment. Its solid-state operating principle makes it suitable for dependable high-level, low-level and liquid-presence detection in automated process systems.

Key Advantages

• Reliable infrared optical liquid-level detection.
• NPN normally open (NO) transistor output for industrial control systems.
• Wide 10–40 V DC operating range for flexible automation integration.
• Solid-state sensing technology eliminates mechanically operated floats.
• Compact probe format supports direct point-level monitoring.
• Suitable for filling, emptying, alarm and liquid-presence applications.

Key Features

• Carlo Gavazzi VP series liquid level sensor.
• Infrared photoelectric sensing principle.
• Integrated infrared transmitter and receiver.
• Built-in electronic amplifier.
• NPN transistor output.
• Normally open (NO) switching function.
• 10–40 V DC supply voltage.
• Solid-state operation with no moving sensing mechanism.
• Designed for point-level detection of compatible liquids.
• Suitable for integration into industrial automation systems.

Reliable Solid-State Liquid Level Detection

The Carlo Gavazzi VP04E uses infrared light to determine whether liquid is present at its optical sensing tip. The difference in refractive conditions between air and liquid changes the amount of internally reflected light reaching the receiver, allowing the integrated electronics to switch the NPN output when the required level condition is reached.

This optical principle avoids the mechanical movement associated with conventional float switches. The VP04E can therefore provide compact point-level sensing for automated systems controlling pumps, valves, filling processes and level alarms.

Typical Applications

• Industrial tank and vessel level monitoring.
• High- and low-level liquid detection.
• Liquid presence sensing.
• Filling and emptying control systems.
• Pump and valve control applications.
• Process liquid monitoring.
• Industrial machinery and automation equipment.
• Level alarm and control circuits.