Behind the panels: Cooling tower panel with conductivity, pH, ORP, corrosion, bleed valve and pumps

This "Behind the panels" blog shows a fully equipped cooling tower panel with conductivity, pH, ORP, corrosion sensor and coupons, bleed valve and pumps

The panel has a MegaTron XS controller, that has datalogging, WiFi, ethernet and Modbus abilities. All the parameters are logged and through the WebAdvantage platform visible online. Live readings, historical graphs, émail reporting and even taking over the controller are possible in WebAdvantage. Let's have a closer look what the panel includes. We start at the bottom right at the inlet of the manifold:

• Diaphragm valve to easify the regulation of the flow rate

• Basket filter

• Conductivity sensor

• pH sensor

• ORP sensor

• Sample valve (No more messing around when taking a sample)

We move up to the corrosion section

• 2x Corrosion coupon holders with see through piping

• NANO-M Corrosion sensor and controller. This LPR corrosion and pitting sensor is connected to the MegaTron XS, so that all the corrosion and pitting values are also logged and online visible.

Dosing pumps

• Rotameter with flow switch. The corrosion coupons and sensor require a constant flow rate that is easily set with the diaphragm valve. The integrated flow switch on the rotameter will give a contact to the controller in case of no flow.

• A pump rack with 3 dosing pumps

Bleed leg

• Bleed leg with a motorized ball valve

Injection points

• Injection valves with a check valve to prevent a backflow of the chemicals to the sensors

The MegaTron XS has 5 control relays and in this case 4 analog outputs. The 5 control relays are used for the bleed valve, the 3 dosing pumps and an alarm output, while the 4 analog outputs retransmit the measured conductivity, pH, ORP and corrosion values to a BCS.

With the dosing pumps and injection points already mounted on the panel, this solution offers a quick and easy installation on site.