K7L-U/K7L-UD

Ultra-miniature Liquid Leakage Sensor Amplifier Enables Longest Liquid Leakage Monitoring Distance in Industry

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Ratings

Rated power supply voltage	12 to 24 VDC (Allowable voltage fluctuation range: 10 to 30 VDC)
Operate resistance	0 to 1 MΩ variable Note: The adjuster (ADJUST) on the top of the Sensor Amplifier sets the resistance for detection within the setting range. It is factory-set to the upper limit. (Normally, the K7L can be used with the adjuster at this setting.)
Disconnection detection function (See note.)	Detection signal: 10 VDC max., 200 ms Detection time: 10 s max. Recovery: Operation is recovered by resetting the power supply.
Release resistance	105% min. of operate resistance
Output configuration	NPN open-collector transistor output with 100 mA at 30 VDC max. for both liquid leakage detection and disconnection detection. Note: If the rightmost pin of the DIP switch on the side of the Sensor Amplifier is set to the down position, the output turns ON when liquid is detected; if it is set to the up position, the output turns OFF when liquid is detected.
Vibration resistance	10 to 150 Hz, 0.1-mm single amplitude with 50-m/s² acceleration for 8 minutes 10 times each in X, Y, and Z directions
Shock resistance	150 m/s² 3 times each in six directions on 3 axes
Wiring distance	Note:These values are possible on the condition that a completely insulated 3-conductor VCT cable with a thickness of 0.75 mm2 and a dielectric strength of 600 V is used together with the Liquid Sensing Band specified by OMRON. (A 0.2-mm2 cable can also be used.)



Accessories

Note: For the K7L-UD.

Characteristics

Ambient temperature	Operating: -10 to 55°C
Ambient humidity	Operating: 45% to 85%
Insulation resistance	10 MΩ at 100 VDC between case and current-carrying parts
Dielectric strength	1,000 VAC at 50/60 Hz for 1 min between case and current-carrying parts
Power consumption	1 W max.
Response time	Operate: 800 ms max. Release: 800 ms max. Startup time after power ON: 2 s max.


Weight	Approx. 14 g

Caution: In the interenst of product improvement, specifications are subject to change without notice.

Sensors