TankGard™
Cathodic protection system for process vessels and tanks

The Polatrak HP-1Z is a permanent reference electrode designed to allow positive monitoring and or control of internal cathodic protection systems for tanks and pressure vessels. It is one of the staple innovations of the TankGard system, and it is not available on other tank cathodic protection systems.

The HP-1Z E (extended) provides the electrode element on an extension wire inside the vessel. This makes it suitable for a number of applications where the electrode needs to be located in a specific area, or where internal access is limited to the upper areas of the tank or vessel. It is also ideal for monitoring tube-sheets in condensers or exchangers.

This instrument is rated to 3000 psi, and is therefore suitable for almost any vessel (access through either a 1/2" or 3/4" NPT fitting). The electrode may be wired to a monitoring station or simply read direct at the vessel using a regular multi-meter. The self bleed zinc electrode provides a rugged +/- 20 mV electrode for just about any environment; it can be inserted through any fitting, providing a ½" or ¾" NPT access.

Specifications

Pressure Rating	3000 psi
Reference Electrode	Mil. Spec Zinc (Auto Bleed)
Access Required	½”, ¾” or 1” NPT
Material	316 SS
Design Life	10 Years
Temperature	80ºC Maximum