A digital thermometer to the thermistor temperature sensing element, the voltage - frequency conversion circuit to overcome the nonlinear thermistor shortcomings; by adjusting the two tuning capacitor in the circuit can replace the different parameters of the thermistor; the use of self-balancing bridge to eliminate the impact of the transmission line to connect the thermistor when the long-range temperature; BGD binary system counts the display circuit to make the structure simple and reliable. Therefore, the thermometer of the present invention is a kind of intuitive readings, reflecting the measured temperature short time, the temperature range of wide and high precision and long-distance temperature measurement and temperature control of the new digital thermometer.
A nonlinear thermistor produced by digital thermometer, including one produced by the thermistor temperature probe of the present invention is characterized in that: also includes self-balancing bridge, differential amplifiers, logarithmic amplifiers, and VCO voltage - frequency conversion circuit by the counter and display circuit display unit.
Digital thermometer with imported chip assembly of high precision, high stability, the error is less than or equal to 0.5%, within the power supply, Micropower, stainless steel housing, sturdy protection, refined appearance.
SKW series digital thermometer with imported high-precision, low temperature drift, ultra-low power integrated circuits and wide temperature liquid crystal display, built-in high-energy battery work is greater than or equal to 5 years without the laying of electricity supply lines, is an accurate and good stability, the new site of the applicability of strong temperature displays. Is the ideal alternative to traditional on-site pointer bimetal thermometers.
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