FIELD: measuring equipment.
SUBSTANCE: device comprises a cylindrical screw-threaded case, within the framework of which there is a coaxially located metal core, which is isolated from the case. The metal core and cylindrical case ends are on a level with the heat-transfer equipment internal surface, and the core diameter is 0.75 as large as the cylindrical case bottom diameter. The scale layer thickness is determined by the absolute minimum and total resistance value of the electric circuit, composed of the solute and scales between the case and the core.
EFFECT: scales on the equipment internal surface thickness rate accuracy increase and the equipment possible scope increase.
1 dwg
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