DEVICE FOR MEASURING TEMPERATURE DIFFERENCE Russian patent published in 2007 - IPC G01K3/08 G01K7/20 

FIELD: measuring technique.

SUBSTANCE: device comprises two thermosensitive resistors connected in the adjacent arms of the bridge, differential amplifier whose adding input is connected to the measuring diagonal of the bridge, indicating or recording instrument, voltage divider whose one stage is temperature dependent, selected peak detector, storage capacitor, generator of controlled frequency, pulse delay stage, and pulse generator connected with the input of the detector connected in series. The temperature-dependent stage is connected with the output of the amplifier. The output of the generator of controlled frequency is additionally connected with the diagonal of the power supply to the bridge. The output of the storage capacitor is connected to the subtracting input of the differential amplifier to define a negative feedback. The input of the indicating or recording instrument is connected with the input of the generator of controlled frequency.

EFFECT: enhanced precision.

1 dwg