Dust resistivity lab – procedure

Dust resistivity lab - procedure

The test procedure is in accordance with IEEE-548, Standard Criteria for the Laboratory Measurement of Fly Ash Resistivity.

The apparatus used for the testing is a custom built arrangement utilizing a high temperature oven, a controlled temperature water bath for gas humidity adjustment, a DC power source, and an electrometer for current flow measurement. Resistivity values are calculated from

= (V/I) . (A/L)

where

= resistivity, OHM-CM

V = applied voltage, Volts

I = measured current, Amperes

L = Ash thickness, cm

A = current measuring electrode face area, cm²

The resistivity testing was conducted in ascending temperature order.