| 摘要 |
Temperature measuring device has thermo-couple, first and second heat-conductive elements connected to outputs of thermo-couple, compensation bridge to each arm of which resistor is included, and to the second output apex of bridge circuit with one output the first additional resistor is connected, at that the resistor of the first arm is arranged as thermo-dependent with positive temperature coefficient and the first additional resistor–with negative temperature coefficient, the first output apex of compensation bridge is connected to the first thermo-conductive element, power source, this with negative output is connected to the second apex of feeding diagonal of bridge circuit, measuring device second output of which is connected to the second thermo-conductive element. Additionally it includes the second and the third resistors, at that the second additional resistor is connected to the first apex of feeding diagonal of compensation bridge and to positive output of power supply source, the third additional resistor with one output is connected to the first output apex of compensation bridge, and with the other contact it is connected to the other output of the first additional resistor and to the first output of measuring device. |
