Patent ID: 8672538

Claim:
Tempering apparatus ( 1 ; 21 ; 31 ; 41 ; 61 ; 81 ) for the execution of a tempering program for at least one sample, comprising: at least one tempering block ( 4 ) configured for the reception of at least one sample, at least one tempering device ( 6 ; 38 ; 39 ; 48 ; 49 ; 86 ) arranged for the tempering of said at least one tempering block ( 4 ), at least one temperature measurement device assigned to said at least one tempering device, at least one control loop ( 9 ; 32 ; 42 ; 62 ; 82 ) for the regulation of a temperature, to which said at least one tempering device and said at least one temperature measurement device, which is assigned to said at least one tempering device, are assigned to, at least one control device ( 8 ; 58 ; 68 ; 88 ) configured for the control of the tempering of the at least one tempering block, characterized in that the tempering apparatus comprises at least two temperature measurement devices ( 7 ; 50 ; 51 ; 67 ; 87 ) assigned to at least one control loop, wherein said at least two temperature measurement devices serve as the measuring elements of the at least one control loop and comprise at least a first and a second temperature measurement device, and that to the tempering apparatus a at least one testing device ( 14 ; 24 ; 14 ′; 54 ; 74 ; 94 ) for the execution of a testing method is assigned to, wherein said testing device comprises a signal-connection ( 15 ; 17 ; 75 ; 95 ) to said at least first and second temperature measurement devices ( 7 ; 50 ; 51 ; 67 ; 87 ), such that by means of said signal-connection ( 15 ; 17 ; 75 ; 95 ) at least one testing quantity and a second testing quantity of the tempering apparatus are detectable, which characterizes the operational status of the tempering apparatus, wherein the tempering apparatus is configured for the execution of the testing method, which comprises the steps: starting the method ( 101 ); operation of at least said first tempering device for the duration of at least one first period from at least one first time ( 102 ); detecting at least one measurement temperature from said at least one first temperature measurement device, which serves as a measuring element of the at least one control loop and which is assigned to said first tempering device, at least at a second time ( 103 ); determining at least one first testing quantity of the tempering apparatus by using said at least one measurement temperature ( 104 ); comparison of said first testing quantity with a reference quantity ( 105 ), wherein said reference quantity is said second testing quantity.