Leakage Sensors : LUP series

  • Body material: P. P (polypropylene) Cable material: PVC (vinyl chloride)
  • Ultra small (φ 24 mm) Built-in amplifier(50 mA output) PNP output specification available!
  • Liquid detectable sensor
  • You can purchase these products at low cost!

Designation System

A→A type(Normal Open)
B→B type(Normal Close)

R→ NPN output
PNP→PNP output


Detecting Method Infrared Photo-reflector
Detecting Output Transistor Output A type: normal Open B type: Normal Close 50mA MAX
Detecting Speed 0.5~1Sec. (Pure Water)
Power Supply 12V~24V
Consumption Current Under 25mA
Indicator Nomal = LED Turns Green, Detecting =LED Turns Red
Operating temperature -10~60℃
Weight Approx.20g(Excluded the Cable)
Material P.P(Polypropylene)
Cable 2Core Shield Cable(Material PVC)
Cable Color Red:Power Supply
Shield:GND Common
Summary measure(size) Sensor diameter φ24 Height 17.2mm

Please kindly perform the checking operation when exclusive holder installed.


Is it possible to change the cable length of the leak sensor? 32531 views

The standard cable length for the leak sensor is 2M. The cable length can be changed, so please cont

Please tell me about the detection principle of the leak sensor. 32404 views

This is an optical sensor that uses an infrared reflective photo reflector. Infrared rays are projec

Can it be used to detect chemical leaks? 55293 views

Yes, you can. There are two types of leak sensor materials: P / P (made of polypropylene) and Teflon

I want to install it in a place with vibration, is that okay? 32277 views

The TFP-T series has a lock type to prevent it from coming off the installation holder. It is a spec

I don’t know which leak sensor to choose. 54580 views

A guideline for selecting a leak sensor. (1) Material made of Teflon → TFP-T series, TFP-F series Ma

Do I need to purchase the leak sensor holder separately? 54599 views

The standard holder is delivered with one installed for each leak sensor body, so there is no need t

Is it possible to manufacture with the specifications for our company? 54628 views

Yes, we can also manufacture custom products. We will ask you for your desired specifications and ma

Do I need a holder for the leak sensor? 54597 views

Yes, a holder for the leak sensor is required for the following three reasons. (1) To protect the de