These positions should be specified by the manufacturer and supported by data from type tests. If these data are not available from the manufacturer, preliminary tests to map the temperature throughout the load will be necessary.
The sensors should be in good thermal contact with the item or installed sensor which they are monitoring and placed, if possible, in or on the part of the item which will be slowest to heat up.
Carry out the test with each type of load carrier. Perform a total of four consecutive tests, the first of which should be at least 60 min since the machine was last used (a “cold start") and the final three with not more than 15 min intervals between cycles (a “hot start").