2
E2K-L
Ratings and Specifications
* 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
Engineering Data (Reference Value)
Item Model E2K-L13MC1 E2K-L26MC1
Applicable
pipes
Materials Non-metal
Size
Diame-
ter
8 to 11 mm 12 to 26 mm
Thick-
ness
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 Technical Guide (Operational version).)
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/s
2
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
Influence of Temperature and Sensing Liquid Level
E2K-L13MC1 E2K-L26MC1
6
4
2
0
−2
−4
−6
30
20
0-10
10
605040
Pipe diameter: 11, Liquid: Pure water
Pipe diameter: 11, Liquid: Saline solution
Pipe diameter: 8, Liquid: Pure water
Pipe diameter: 8, Liquid: Saline solution
Temperature (°C)
Change in sensing liquid level (mm)
010
−10
6
4
2
0
−2
−4
−
6
6050403020
Pipe diameter: 26, Liquid: Pure water
Pipe diameter: 26, Liquid: Saline solution
Pipe diameter: 12, Liquid: Pure water
Pipe diameter: 12, Liquid: Saline solution
Temperature (°C)
Change in sensing liquid level (mm)
