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Liquid Level Sensor


Liquid Level Sensor That Is Unaffected by the Color of the Pipe or Liquid

Model E2K-L13MC1 E2K-L26MC1
Applicable pipes Materials Non-metal
Size Diameter 8 to 11 mm 12 to 26 mm
Thickness 1 mm max. 1.5 mm max.
Detectable object Liquid *
Repeat accuracy ±0.2 mm max.
Differential travel
(Reference value, varies with
pipe size and liquid.)
0.6 to 5 mm 0.3 to 3 mm
Power supply voltage
(operating voltage range)
12 to 24 VDC (10.8 to 30 VDC), ripple (p-p): 10% max.
Current consumption 12 mA max.
Control output Load current 100 mA max.
Residual voltage 1 V max. (Load current: 100 mA, Cable length: 2 m)
Sensing liquid position Indented mark position (For details, refer to Datasheet)
Indicators Detection indicator (orange)
Ambient temperature range Operating: 0 to 55°C (with no icing or condensation), Storage: -10 to 65°C (with no icing or condensation)
Ambient humidity range Operating/Storage: 25% to 85% (with no condensation)
Temperature influence ±4 mm of detection level at 23°C in the temperature range of 0 to 55°C
(with pure water or 20% saline solution)
(±6 mm for E2K-L13MC1 with pure water and a pipe diameter of 8 mm)
Voltage influence ±0.5 mm of detection level at the rated voltage in rated voltage ±10% range
Insulation resistance 50 MΩ min. (at 500 VDC) between current-carrying parts and case
Dielectric strength 500 VAC, 50/60 Hz for 1 min between current-carrying parts and case
Vibration resistance Destruction: 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance Destruction: 500 m/s2 3 times each in X, Y, and Z directions
Degree of protection IP66 (IEC)
Connection method Pre-wired Models (Standard cable length: 2 m)
Weight (packed state) Approx. 70 g
Materials Case, Cover Heat-resistant ABS
Cable clamp NBR
Accessories Two bands, Four slip-proof tubes, Instruction manual

* Stable detection will not be possible in the following cases. Confirm detection capability with the Sensor installed before
   actual application.
1. If the specific inductive capacity or the specific electric conductivity of the liquid is too low, the liquid position may not be
     detected since this sensor is a capacitive sensor.
2. If the quantity of liquid is too low or the change in quantity is too low in comparison to the change in liquid level because
     the pipe is too thin or the walls of the pipe are too thick
3. If there is a viscous film on the inner pipe wall, large quantities of foam or air bubbles, or excessive buildup of dirt on
     the inner pipe wall