Omron E2K-L DATASHEET

Liquid Level Sensor

E2K-L

• Installation on pipes.

• Sensing by means electrostatic capacity and is not
influenced by the color of the pipe or liquid.

• Available in 8 to 11 mm dia. and 12 to 26 mm dia.
models to enable sensing for a wide range of pipe
diameters.

• Built-in amplifier for space-saving.

Applications

Liquid surface level detection

Ordering Information

Sensor type Applicable pipe diameters Shape Output form Model

8 to 11 mm dia.

Electrostatic

capacity method

12 to 26 mm dia.

NPN open-collector out­put

NO

E2K-L

E2K-L13MC1

E2K-L26MC1

D-203E2K-L

Rating/Performance

Item Model E2K-L13MC1 E2K-L26MC1

Material

External

Applicable pipes

Size

diameter
Wall

thickness
Sensing object Liquid (see note)
Repetition precision
Response difference
(reference value only; varies

with pipe size and solution)
Supply voltage

(operating voltage range)
Current consumption 12 mA max.

Switching

Control output

capacity
Residual

voltage
Detection position of liquid surface
Indicator lamp Operation indicator (orange)
Ambient temperature Operating: 0 to 55°C; Storage: -10 to 65°C (with no icing or condensation)
Ambient humidity Operating/storage: 25% to 85% (with no condensation)

Temperature influence

Voltage influence At the rated power supply voltage ±10%: Detection level at rated supply voltage ±0.5 mm
Insulation resistance 50 M min. (at 500 VDC) between energized parts and case
Dielectric strength 500 VAC 50/60 Hz for 1 min between energized part and case
Vibration resistance 10 to 55 Hz, 1.5 mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance 500 m/s2 for 3 times each in X, Y, and Z directions
Protective structure IEC 60529 IP66
Connection method Pre-wired models (standard length: 2 m)
Weight (Packed state) Approx. 70 g

Material

Case, cover

Cable clamp
Accessories 2 binding bands, 4 nonskid tubes, instruction manual

Note: In the following cases, stable detection may not be possible and ensure to confirm correct operation in the actual installation before use.

1 .If the dielectric constant or conductivity of the liquid is low.
2 .If the capacity of the liquid is small, or if the pipe diameter is so small or the pipe walls are so thick that the amount by which the capacity changes relating to

the liquid level is small.

3 .In case of an increased gassing or a highly viscous liquid firm residue on the inside walls of the pipe, or a dirt clogging on the inner or outer walls of the pipe.

Non-metal

8 to 11 mm dia. 12 to 26 mm dia.

1 mm max. 1.5 mm max.

±0.2 mm max.

0.6 to 5 mm 0.3 to 3 mm

12 to 24 VDC, 10% max. ripple (10.8 to 30 VDC)

100 mA max.

1 V max. (under load current of 100 mA with cable length of 2 m)

Notch position (For details, refer to Sensitivity Adjustment on next page.)

In the range 0 to 55°C: Detection level at 23°C 4 mm (with distilled water or 20 % salt water con­centration)
(±6 mm with E2K-L13MC1 for distilled water in pipe of 8 mm diameter)

Heat-resistant ABS resin
NBR

D-204 Capacitive Sensors