  Experimental conditions for simultaneous measurements of transport
coefficients of high temperature superconductors in zero and non-zero magnetic
fields are analysed. Test measurements of the thermal conductivity, the
thermoelectric power and the Nernst - Ettingshausen effect of a textured Bi2212
sample are reported in an external magnetic field of 2T. Errors related to
parameters of the thermocouple used and to the spurious heat flows are
discussed for a new experimental set-up built based on a closed cycle helium
refrigerator. Possible optimising of experimental conditions is suggested.
