India

K7L-AT50/-AT50D Liquid Leakage Sensor Amplifier

* Ordering information

* Specifications

* Configurations

* Dimensions, and etc

can be found in our PDF brochure.

Ultra-miniature Sensor Amplifier Reliably Detects a Wide Variety of Liquids Ranging from Water to Liquid Chemicals with Low Conductivity.

K7L-AT50:

Detects liquids with impedance as high as 50 MΩ using interelectrode resistance detection. Detection of IPA and pure water is possible.
Four selectable sensing ranges ensure detection suited to the characteristics of the liquid.
Incorporates a noise canceller circuit connected to a 3-conductor cable, ensuring a high level of noise immunity and reliable operation (patent pending).
The power supply block and Sensing Band are isolated, allowing the installation of more than one device in the same place.

K7L-AT50D:

Constantly monitors for disconnections between the Sensor Amplifier and the Sensing Band.
Failure to detect liquid leakage due to disconnection in the Sensing Band prevented.
Notification of disconnection detection made using LED indicator and transistor output.
After a disconnection is detected, the operating status is held to avoid instability due to further contact of the disconnected part.
This model retains all the characteristics of the K7L-AT50 (detection sensitivity, sensing ranges, and AC detection method).
Meets UL/CSA standards.

Features

Sensing Band boasts high degree of chemical resistance. The K7L can be used in a wide range of applications from semiconductor production installations to food-processing equipment
Inter-electrode Resistance Detection
Stable detection of liquids with impedances of up to 50MW and common water. Four sensing ranges are available ensuring detection suited to the application. You can set it to detect, fresh water, pure water, distilled water, plating liquids, chemical liquids, and IPA (isopropyl alcohol)
Noise Canceller Function (Pat.)
Incorporates a noise canceller circuit that uses a 3-conductor cable, ensuring a high level of noise immunity
AC Detection Method
This K7L internally oscillates AC signals provided to the Sensing Band at approximately 3.75Hz, protecting the Sensing Band from electric corrosion, and ensuring safe operation
Multiple Installation
The power supply circuit and the detection circuit are isolated and so several Amplifiers can be installed in the same place
Sensing Band with Excellent Chemical Resistance
SUS316 and polyethylene are used for the Sensing Band's core and sheath respectively ensuring high resistance to both acidic and alkaline liquids

Application Examples

Liquid Leakage Detection for Measuring Baths in CMP Devices
Detects liquid leaked to drain pans, and prevents damage to devices and cleaning irregularities for waters
Detection of Liquid Leakage at Pipe Joints for Chemical Liquid Tanks
Liquid leakage at a pipe joint can be detected by wrapping the Sensing Band around the joint
Detection of Condensation and Liquid Leakage at Semiconductor Production Installations
Detects condensation inside cleaning devices and liquid leaked to the surroundings
Detection of Cleaning Fluid Level for Plating Devices
Detects the level of pure water inside plating baths. High sensitivity allows high-accuracy control that prevents cleaning irregularities

Liquid Leakage Position Sensor

K7L-UP-FLK

Pinpoint liquid leakage detection at up to 600 m. Easy setup and installation.

Liquid Leakage Sensor Amplifier for Long-distance Wiring

Ultra-miniature Liquid Leakage Sensor Amplifier enables longest liquid leakage monitoring distance in industry.

Liquid Leakage Point Sensor

F03-16PS

A Liquid Leakage Point Sensor has been added to the K7L-series.