Temperature sensing and indicating device

A temperature sensing and indicating device, comprising:

• a. a housing;
• b. an arm, said arm being retractable and extendible into and out of said housing, such that the length of said arm external to said housing can be varied in a predetermined manner;
• c. a stationary probe having a temperature sensor therewithin enclosed by said arm such that varying the external length of said arm exposes varying lengths of said probe whereby the exposed length of said probe is designed to be inserted into a medium such that said temperature sensor senses the temperature of the medium and converts the temperature sensed into a signal;
• d. a linearizer/amplifier which receives said signal from said temperature sensor, amplifies and conditions said signal and produces a temperature-proportional output voltage,
• e. an analog to digital converter which receives said temperature-proportional output voltage from said linearizer/amplifier, and converts said temperature-proportional output voltage into a temperature-proportional digital signal;
• f. a microprocessor which controls said temperature sensing and indicating device, said microprocessor having a memory containing temperature calibration values such that said microprocessor receives said temperature-proportional digital signal from said analog to digital converter, compares said temperature-proportional digital signal to said calibration values in said memory and converts said temperature-proportional digital signal into a driver input signal;
• g. a display driver which receives said driver input signal from said microprocessor and converts said driver input signal into a display input signal;
• and
• h. a display which receives said display input signal from said display driver whereby said display driver drives said display causing said display to provide a visual indication of the temperature sensed by said temperature sensor.

A temperature sensing and indicating device, comprising:

• a. a housing;
• b. an arm, said arm being retractable and extendible into and out of said housing, such that the length of said arm external to said housing can be varied in a predetermined manner;
• c. a probe having a temperature sensor therewithin enclosed by said arm such that varying the external length of said arm exposes varying lengths of said probe whereby the exposed length of said probe is designed to be inserted into a food substance such that said temperature sensor senses the temperature of said food substance;
• d. a linearizer/amplifier which receives said signal from said temperature sensor, amplifies and conditions said signal and produces a temperature-proportional output voltage;
• e. an analog to digital converter which receives said temperature-proportional output voltage from said linearizer/amplifier and converts said temperature-proportional output voltage into a temperature-proportional digital signal;
• f. a microprocessor which controls said device, said microprocessor having a memory containing temperature calibration values such that said microprocessor receives said temperature-proportional digital signal from said analog to digital converter, compares said temperature-proportional digital signal to said calibration values in said memory and converts said temperature-proportional digital signal into first and second driver input signals;
• g. first and second display drivers which receive said first and second driver input signals from said microprocessor and convert said first and second driver input signal into first and second display input signals;
• and
• h. a display which receives said first and second display input signals from said first and second display driver whereby said first and second display drivers drive said display causing said display to provide a visual indication of the temperature sensed by said temperature sensor, said visual indication comprising a digital numeric display and a linear analog display.