Walchem cooling tower controllers
The cooling tower control system shall be a capable of measuring system conductivity and temperature.
The conductivity sensors shall be either a contacting style or an electrodeless style. An optional second sensor shall be a choice of pH, ORP, PTSA, free chlorine, total chlorine, chlorine dioxide, ozone, Peracetic acid, or hydrogen peroxide.
Six digital inputs are available for sensors that shall include a flow switch, contacting water meter, paddlewheel flowmeter or other dry contact devices.
Outputs shall include six mechanical relays, and two optional 4-20 mA outputs.
Digital communications shall be via Ethernet. The controller shall be accessible via the Internet for configuring, data logging, and control of relay outputs.
The USB port shall provide the ability to upgrade the software in the controller to the latest version, save all the set points from a controller onto a USB flash disk and import settings into another W600 controller, and download datalog files to a USB flash disk. On screen graphing of one analog signal and one digital signal/relay state shall be available on the touchscreen display.
Ethernet option for remote access via the Internet or LAN
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