In Feb 2002 a FRDC – equipment was rented from METAS, Switzerland. Measurements on thermal converters (TC) of a new manufacturer have been made. These TC‘s are designed as UHF- units with an evanohm heater, platinum feedthroughs and a cold bead.
Picture: All given measurement values are valid only for this geometry. One heater-terminal of the TC is soldered directly to the Type „N“ connector, the other one via a copper-wire back to ground.
FRDC – measurements: The converters were located in a temperature – stable environment of about 23 °C and protected from air-flow. A short coaxial cable (about 30 cm) was used to connect the source to the converter.
example: one complete FRDC/DC measurement at voltage and current with curve-fitting
summary: results for ITE and UTE for all measured converters derivated from curve-fitting as shown before
AC/DC – measurements: all TC compared with a calibrated PMJTC. Uncertainty-bars are drawn for one converter for 1s. The high-frequency- behaviour depends on mounting.