Fly Ash Level Application Guide

Fly Ash, requires a horizontal sensor installation is recommended. 

What is meant by a horizontal installation, is as illustrated below. 

Installation

A ground reference element is required in most installations.  This usually takes the form of the metal vessel wall.  In other cases, a metal ground pipe, structural element, or ground rod, which extends to a point that is equal to or greater than the lowest point of the sensor may be used.  There must be less than 1 ohm of resistance between the ground reference element and the probe mounting hub or the case ground of the controller.

When mounting a NULL-KOTE point level probe through a nozzle or firebrick (lagging), or when mounting in a tank where heavy product build-up is possible on the inside walls or top, the guard element must be long enough to extend at least two inches beyond any such build-up.

lagging - Insulation used to prevent heat diffusion, used to wrap around pipes or boilers to prevent loss of heat