The ornamental design for a sampletemperaturecontroller, as shown and described.
1. Sample temperature controller
1.1 : Front
1.2 : Back
1.3 : Right
1.4 : Left
1.5 : Top
1.6 : Bottom
1.7 : Perspective
The sample temperature controller is aimed at stabilizing the temperature of a sample to be measured by a viscometer; the parallel thin lines in the representation represent contours only and do not illustrate an ornamentation or decoration on the surface of the product.
The broken lines show portions of a sample temperature controller which form no part of the claimed design.