Level Controllers

OMRON produces a series of specialised sensors for detecting liquid levels. Capacitive, conductive and ultrasonic sensing is used for level control devices.

Conductive
Ultrasonic
Previous Models

Conductive

Model	K7L___-B	K8AK-LS
Type	Leakage sensor	Conductive Level Controller
Features	• Detects leakage of water and chemicals with low conductivity • Compact Plug-In units for use with Push-In Plus Terminal Block Sockets • Models for long-distance wiring upto 400 m • Ribbon Electrode Bands and Point Sensors available • Sensor disconnect function available on some models	• Outputs can be set to self-hold at ON or OFF using self-holding circuits. • Sensitivity adjustment of operating resistance from 10 to 100k Ohms for application to a wide range of liquids • Delay timer to prevent relay contact chattering caused by waves
Supply voltage	12 to 24V DC	24 VAC, 50/60 Hz, or 24 VDC 100 to 240 VAC, 50/60 Hz
Detectable substances	Liquids with resistance up to 50M Ohms	Conductive liquids
Control output	NPN open collector; 100mA at 30 VDC	6 A at 250 VAC for resistive load 1 A at 250 VAC for inductive load
Model	K7L-AT50 and K7L-U	61F-N, 61F-G_N, 61F-GP, 61F-GPN and 61F-GP-N2
Type	Leakage sensor	Floatless level controller
Features	• Detects leakage of water and chemicals • Space saving sensor amplifier • Socket-mounted design	• Floatless conductive system • Separate probes for high, low and alarm levels
Supply voltage	12 to 24V DC	24 or 240V AC
Detectable substances	Liquids with resistance up to 50M Ohms	Conductive liquids
Control output	NPN open collector; 100mA at 30 VDC	Relay; 5A at 250VAC
Model	61F-WLA / 61F-GPN-V50
Type	Water leak alarm and Detector
Features	• Settable operating resistance, to detect desired leakage levels • Uses corrosive resistive sensing band • Socket-mounted design
Supply voltage	24, 110-120 or 220-240V AC
Detectable substances	Liquids with resistance up to 50K Ohms
Control output	3 A at 250 VAC for resistive load 1 A at 250 VAC for inductive load

Top

Ultrasonic

Model	E4A-3K	E4PA-N
Type	Ultrasonic Long-range laser sensor	Ultra sonic sensor
Features	• Background suppression for accurate sensing • Fast alignment troubleshooting with stable operation check function • Mutual interference protection built in • Self-contained, no external power supply required	• High-precision detection with a wide range measurement • A setting plug with a temperature compensation function make it easy to set the sensing range. • The sensor is ultrasonic, so it is not affected by the color of objects
Sensing Distance	Adjustable between 0.3 and 3 m (selectable ranges of 0.3 to 2 m and 1.3 to 3 m)	50 to 500 mm 120 to 2000 mm 240 to 4000 mm 400 to 6000 mm
Inputs / Outputs	Contact output : SPDT 3 A at 220 VAC/24 VDC	Analogue Output
Power supply voltage	12-24VDC 120/240 VAC	10 to 30 VDC
Current consumption	150 mA max. Approx. 2.5 VA	1800mW max
IP Rating	IP60	IP65

Details on previous Level Controller models

Top