Patent ID: 7581874

Claim:
An apparatus for monitoring and recording fouling of an aqueous system comprising: (a) a piping assembly integrated or coupled with a monitoring and recording assembly; (b) a heat transfer test assembly comprising: (i) an outer tube member; (ii) a heating rod positioned coaxially within the outer tube member, said heating rod comprising means for sensing a wall temperature of said heating rod; (iii) a tube sleeve assembly coaxially fitted over the heating rod within the outer tube member, wherein said tube sleeve assembly comprises a ribbed sleeve section, an upstream flow transition section positioned upstream of and butted against an upstream end of the ribbed sleeve section, and a downstream flow transition section positioned downstream of and butted against a downstream end of the ribbed sleeve section; and (iv) an annular fluid flow passageway disposed between the tube sleeve assembly and the outer tube member wherein the heat transfer test assembly is disposed within the piping assembly; and (c) an additional heat transfer test assembly disposed within the additional heat transfer test assembly comprising: (i) an additional outer tube member; (ii) an additional heating rod positioned coaxially within the outer tube member, said additional heating rod comprising means for sensing a wall temperature of said additional rod, wherein said additional heating rod comprises a smooth outer surface; and (iv) an annular fluid flow passageway disposed between the additional heating rod and the outer tube member.