MEASURING TEMPERATURE OF AVERAGE TEMPERATURE OF NON-HOMOGENEOUS MEDIUM, AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2013 - IPC G01K3/02 G01K7/32 

FIELD: measurement equipment.

SUBSTANCE: according to the proposed method, there measured is oscillator frequency depending on parameters of thermoresistors located uniformly in the volume of the investigated field and connected to external capacitors and of phasing RC circuit, forming together with an amplifier an oscillator connected through a frequency-code converter and a microcontroller, the programme of which is provided with a calibration characteristic of frequency dependence on the controlled temperature. The invention also presents possibility of correcting instrument measurement error during calibration after installation of thermoresistors in controlled medium and setting of the value of frequency corresponding to minimum and maximum average medium temperature, and when they are achieved, and additional indication mode is activated. After processing with the controller the result is transmitted to a control channel or to a temperature indicator.

EFFECT: improving measurement accuracy of medium temperature.

3 cl, 3 dwg