LUP Series compact Leak Detect Sensor

The Compact LUP Liquid Detection Sensor is an exceptionally low-profile leak detector that identifies water, chemicals, and other industrial liquids. These units are typically placed in a drip pan or similar location to monitor for leaks. If they end up in the thinnest pool of liquid, they trigger an alarm. LUP Series liquid detection sensors use a detector looking at an LED; if that light path gets altered, it knows liquid is present. These liquid sensors can detect virtually any industrial liquid as long as it is not exposed to excessively high or low temperatures.

Note: These components are not intended for use with flammable liquids or in explosive environments.


UL FIle number: E202019

Technical Specifications
Detection method	Infrared Photo-refraction
Output	Transistor NO or NC   NPN (50mA MAX) or PNP (18mA MAX)
Power	12 – 24VDC
Response time	< 1 sec (DI water)
Current Consumption	25mA Max
Indicators	Normal operation – Green LED on, Red LED off   Detection – Red LED on, Green LED off
Operating temperature	- 10 to 60°C
Material of construction	PP (Polypropylene)
Cable	shielded 2 conductor 28AWG,   PVC (polyvinyl chloride)   2 meter length standard
Wiring	+: red   -: shield   Signal: white

Features of the Compact LUP Series Liquid Detection Sensors

The Compact LUP Series Liquid Detection Sensor is manufactured with a polypropylene body and a vinyl chloride cable. These materials provide excellent resistance to corrosive chemicals. Despite its ultra-small size of just 24 mm in diameter, LUP Series sensors feature a built-in amplifier with a 50 mA output and an LED light that remains green when no liquid is present and turns red when liquid is detected.

The low-profile design of the LUP Series Liquid Detection Sensors makes it a versatile solution for liquid monitoring in tight spaces. Measuring a diameter of φ24 and height of 17.2mm, it can fit in nearly any location requiring liquid monitoring. These liquid sensors are also highly cost-effective, providing fast and reliable liquid detection at low price points.

Benefits of the LUP Series Liquid Detection Sensors

• Exceptionally compact design, ideal for use in applications with limited space
• Reliable performance and fast response time when detecting liquids
• Cost-effective
• Compatibility with many liquids in industrial settings, including water, chemicals, and more
• Polypropylene housing and vinyl chloride cable can withstand exposure to harsh chemicals

Industrial Applications for Compact LUP Liquid Detectors

Because the LUP Series Liquid Detection Sensors feature a very small, compact design, they are typically used in industrial applications where space is limited. This includes food and beverage processing equipment, water treatment facilities, OEM production lines, chemical processing equipment, and more.

Contact Us to Learn How Daitron Can Be Your Liquid Detection Sensor Supplier

Contact Daitron for more information about our line of liquid monitoring and flow detection solutions. In addition to Compact LUP Series sensors, we also offer KP Series Low-Cost Leak Detection Sensors and TFP Series Chemical Resistant Leak Detector Sensors. For pricing estimates on your order of liquid detection sensors, request a quote online. Daitron is your trusted source for all your industrial liquid detection needs.