TFP Series Leak Detector Sensor

Minimize damage to your devices and components with a chemical-resistant liquid leak detector sensor. Infrared light detects liquid or water leaks, regardless of reflectivity or viscosity of the liquid. Our TFP Series leak detector sensor is constructed with a Teflon (PFA) casing and cable (FEP), ensuring resistance to harsh chemicals.

Trusted Supplier for Water Leak Detectors

Daitron is your source for premium leak sensors. As a trusted electronic component and capital equipment global distributor, we are dedicated to providing the best customer service with competitive pricing. We work with a broad spectrum of industries, supplying leak detectors for various applications, including semiconductors, solar cells, electronics, heavy-duty industrial, transportation, medical and biomedical, fiberoptic, and more. With decades of experience, the team at Daitron is committed to providing high-quality sensors that meet customers' demands in the manufacturing industry. Trust Daitron to supply your industry-leading liquid leak sensors.

Chemical Resistant Liquid Leak Sensor Features

  • Available PNP output
  • Built-in amplifier
  • Resistant to hazardous liquids and chemicals
  • Main unit PFA material finish

Liquid Leak Detection Benefits

  • LED/infrared technology based on light refraction for leak detection
  • CE certified
  • UL certified
  • IP67 construction
  • PFA construction
  • Not rated to operate in hazardous, potentially explosive environments

Industry Applications

Chemical-resistant leak detector sensors can benefit the following applications:
  • Cleanrooms
  • Semiconductor manufacturing
  • Commercial appliances
  • HVAC equipment

Liquid Leak Detector Specifications

Fluoropolymer - PFA (Perfluoro Alkoxy)
Compact design occupying 1/2 the space of previous sensors, with a thickness of just 10mm.

Technical Specifications

Detection method

Infrared Photo-refraction


Transistor NO or NC

NPN (50mA MAX) or PNP (18mA MAX)


12 – 24VDC

Response time

< 1 sec (DI water)

Current Consumption

25mA Max


Normal operation – Green LED on, Red LED off

Detection – Red LED on, Green LED off

Operating temperature

- 10 to 60°C

Material of construction



shielded 2 conductor, FEP

2 meter length standard


+: brown

-: shield or blue

Signal: white or black

diagram of TFP series leak detector

Fluid Processing Supplier

Daitron understands the need for high-performance, dependable fluid process systems. Our inventory of liquid leak detection sensors, including our LUP series and our low cost KP series, offers the functionality and reliability needed in a liquid monitoring component. provides the necessary measurement and monitoring for your industrial applications.

Order a Leak Detector Sensor Today

Request a quote or call us at 503-682-7560 to discuss your leak sensor requirements with us. We can help you select the best liquid monitoring and flow detection sensors for your needs.