Liquid-level Sensor

Capacitance-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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