Liquid-level Sensor

Capacitance-type Liquid-level Sensor CLA SeriesCapacitance-type Liquid-level Sensor
CLA Series

Separated amplifier-type sensor allows detection of the liquid level without coming in contact with the liquid.
Internal liquid level can be detected by simply placing the electrodes on the sides of a nonmetallic container, gage pipe, etc.

Application Examples

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Specifications

Electrodes

Model CLA-D30P150 CLA-D30P250 CLA-D30P550
(Under development)
Applicable pipe diameter Φ30mm *¹ Φ30mm *¹ Φ30mm *¹
Liquid-level range 0 to 150mm 0 to 250mm 0 to 550mm
Standard cable length 2m (External diameter Φ4mm Shielded twisted pair cable)
Operating temperature 0 to 40°C
Operating humidity 35 to 75% RH
Insulation resistance 50 MΩ min. between lead wire and case
(insulation resistance tester of 500V DC)
Tolerance voltage For one minute at 500 VAC,
50/60Hz between lead wires and electrode surface.
Protective construction IP-63
Installation Wind and band together and fix with the provided insulation lock tie.
Secure with double-sided adhesive tape on a flat surface.

*¹ : Securing is possible from Φ24 to a flat surface. Please consult us for details.

Amplifier

Model CLA-A01
Power supply DC 12V/DC 24V ±10%
Consumption current 60mA or less
Liquid-surface detection range Electrode type Liquid-level detection range Liquid relative permittivity
CLA-D30P150 0 to 150mm 1.8 or more
CLA-D30P250 0 to 250mm
CLA-D30P550 Under development
Analog output Voltage output: 1V to 5V at upper and lower limit of the liquid surface
Output resistance: 1 KΩ or less
Control output Upper limit control output ON beyond the upper limit setting level
(variable)
Lower limit control output ON below the lower limit setting level
(variable)
Difference: 10% or less than the set level
Output circuit structure: NPN transistor open collector
Control output response time Less than one second
Indicator lamp Power indication Green lamp lights up in power-on state
Blinks once when teaching has been completed.
Upper limit control indication Red lamp lights while the upper limit control output is being operated.
Lower limit control indication Yellow lamp lights while the lower limit control output is being operated.
Temperature condition influences Less than ±15% of 3V analog output
in 0 to 40°C *²
Voltage influences Less than ±5% of 3V analog output
at the applied voltage 24 VDC ±10% *²
Insulation resistance 50MΩmin. between terminal and case
(insulation resistance tester of 500V DC)
Tolerance voltage For one minute at 500 VAC,
50/60Hz between lead wires and electrode surface.
Installation 35mm DIN mounting rail.

*² : This is a reference value for standard electrodes.
It varies according to the type of liquid to be detected, and dimensions of the gage pipe. Contact us for details.

Inquiry

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