191385 Walchem Option Board, pH/ORP, W400 Series

4-20mA Option Board, W400 series

The WEL Series are modular in design with a rugged CPVC housing that contains the electronics. pH and ORP cartridges can easily be connected or replaced in minutes without tools. The cartridges...

W100W Series Plug into more options in water treatment control! Three powerful control outputs make the Walchem W100 a more versatile, high value choice among entry level water treatment controllers...

WDS Differential pH and ORP Sensors Walchem’s WDS Series differential pH and ORP sensors will provide long-lasting and reliable performance in industrial and municipal applications. The differential...

Power relay board, W100, 3 powered, passive pH/ORP