Tzero thermocouple

In these equations, Q is the heat flow rate with the subscript s or r denoting the sample or reference pod, respectively R is the thermal resistance, C is the heat capacity of the sensor pod (the thermal capacitance), Ts is the sample temperature, T is the reference temperature, To is the temperature of the center sensor (which is called the Tzero thermocouple), diad dTIdt is the heating rate. 

Fig. 1.45.1. Artist s view of a DSC cell in Tzero technology as used in modulated DSC (MDSC) processes. 1, Sample and reference table made from one piece of constantan 2, chromel thermocouples directly connected to the constantan tables 3, Tzero sensor from chromel-constantan in the middle between sample and reference table (TA Instruments, New Castle, DE, USA...

Q Series Modules The TA Instruments cell for the Q series DSC utilizes three thermocouples (see Fig. 2.2) and the associated Tzero technology... 

Danley 2003,2004). In addition to the sample and reference sensors, an additional center thermocouple, denoted To (Tzero), is utilized for the heat flow measurements. Similar to the 910,2910, and 2920 modules, there are two raised platforms for the sample and the reference on a constantan disk, which acts as a heat leak. The sample and reference disk thermocouples are attached to the underside of each platform. Two AT measurements are made. The first is taken between the chromel wires that are attached to the chromel disk area detectors. In addition, ATo is measured between chromel wires attached to the sample chromel disk and the To sensor. A chromel wire is looped between the sample chromel disk and the Tq sensor, which measures the sample temperature at the raised pod. The Tq sensor temperature is measured at the junction of the constantan and chromel wires attached at the center of the heat leak base. 

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See also in sourсe #XX -- [ ]

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