ALA 001 & ALA002 Series
The Ankersmid Liquid Alarm Sensor ALA 002 sensor works on the principle of the detection of a change in internal reflection. When a liquid is disposed on the outside lens of the sensor the reflection will be changed and detected by the sensor. The transparent dome contains an LED and an optical sensor. An alarm is generated by the electronic module ALA 102 with a potential fuse contact.

Additional information
The ALA 003 sensor works on the principle of electrical conductivity. When liquid comes in contact with the sensor’s two electrodes, a small current is measured and the alarm is given. (Min conductance: 40μmS/cm). The electrodes are mounted under a vertical gas path that – due to gravity – projects the smallest droplet onto the electrodes. An alarm is generated by the electronic module ALA 101 with a potential fuse contact.

Application
A liquid sensor is used in gas sample conditioning/systems as a security alarm in case of condensate breakthrough.
Coolers, water-stops and automated drains are some of the Ankersmid components used for condensate evacuation. The performance of these components is monitored with a liquid alarm sensor. The liquid alarm will report any breakthrough of condensate and thus protect liquid-sensitive optical analyzers or analytical cells from moisture damage. The alarm sensor can be set to shut of a pump or activate a solenoid valve for protection when tripped by moisture detection.

Documentation

3.9 ALA Liquid Alarm