6
E2K-L
Liquid Level Sensor
■
Precautions
◆
Mounting
●
Mounting Procedure
• Mount the Sensor securely to the pipe using the 2 binding
bands and the 4 slip-prevention tubes provided (2 tubes
per band) in the way shown below. Mount the Sensor so
that the pipe is in contact with the entire sensing face of the
Sensor with the pipe and Sensor in parallel.
◆
Wiring
●
Power Supply
• If separate power supplies are used for the Sensor and the
load, be sure to turn on the power supply to the Sensor
first.
• If a commercially available switching regulator is used, the
Sensor may malfunction because of switching noise. Con-
nect the frame ground and ground terminals to ground.
• Separate the Sensor wires from other power lines or lines
carrying high voltages. Wiring together (e.g., in the same
cable or duct) may produce inductance in the Sensor wires
resulting in malfunction or damage.
●
Cable Tensile Strength
• Do not use the Sensor with an excessive force exerted on
the cable. Do not exert a pulling force of more than 30 N on
the cable.
◆
Adjustment
●
Sensitivity Adjustment
• Mount the Sensor with the setting position (notch) in line
with the liquid level to be detected.
• After the Sensor is mounted, adjust the detecting sensitivity
using the (12-step) sensitivity adjuster in the way shown
below.
Note 1:
While adjusting the sensitivity, do not put your hand on
the Sensor and make sure that the cable is properly
secured. Failure to observe these points may affect the
detection level.
Note 2:
When using more than one Sensor (e.g., to detect for
upper and lower limits), adjust the sensitivity of the Sen-
sors in order starting from the bottom. Adjusting the
sensitivity of a Sensor may affect the detection level of
the Sensor above it.
Correct Use
Sensor
Level of
liquid surface
Setting position
(notch)
Pipe
Slip-prevention tubes
Binding bands
Operation
indicator
Sensitivity
adjuster
Slip-prevention tubes
Binding bands
Sensor
Pipe
Side View
Front View
Top View
Status of the
indicator when
the liquid level
is aligned with
the setting
position
Sensitivity
adjuster
Adjustment procedure
Not lit
Turn the sensitivity adjuster
clockwise using a screwdriver
until the indicator lights.
Lit
Turn the sensitivity adjuster
anti-clockwise using a screw-
driver until the indicator turns
OFF. Then, turn the sensitivity
adjuster clockwise until the
indicator lights again.
Pipe
Sensor
Level of
liquid surface
Setting position
(notch)
1
1
2
2. Then set the upper limit.
1. First set the lower limit.
