MicroVision conductivity cooling tower controllers from Pulsafeeder come with toroidal sensor technology that reduces potential for fouling. The microprocessor-based conductivity controller with selectable timer and dual-biocide control is designed for cooling tower applications. Controllers come with graphical displays with large, easy-to-read font; statistics screen with relay runtime; flow switch input; three drum level inputs; dry-contact alarm output; battery backup; selectable timer; and dry-contact/Hall effect water meter input. The bleed output supports a solenoid valve or motorized ball valve. 800/333-6677; www.pulsatron.com.