Abstract: A method and apparatus for adjustably controlling the growth of the solid phase of a substance from around a cooling mechanism, such as the growth of an ice bank around cooling coils, while also minimizing chances of inaccurate control by referencing the apparent resistance of the liquid that is actually in the system rather than a standard value for the same. The invention uses four springs as probes that are positioned relative to one another and are linked with a detachable control circuit in a manner which provides a dead-band in the unit's operation by monitoring the resistance of the liquid at two different distances from the cooling mechanism while the reference resistance is monitored at an even greater distance.

Abstract: A method and apparatus for controlling the growth of the solid phase of a substance from around a cooling mechanism, such as the growth of an ice pack in a water cooling system, while also minimizing chances of inaccurate control by referencing the apparent resistance of the liquid that is actually in the system rather than a standard value. The method also provides for a dead-band by monitoring the resistance of the liquid at two roughly adjacent locations.

Abstract: An apparatus for housing an electronic circuit mounted on a printed circuit board which provides means for connecting electrical cables to the electronic circuit. The apparatus provides environmental protection to the electronic circuit and cable terminals. Additionally, the electronic circuit may be easily disconnected and removed without disturbing the cable connections.