Digital Thermometer enables fast and reliable measurements. These thermometers provide very high clinical accuracy and have been designed to provide maximum user-friendliness. Digital Thermometer series can be used in conjunction with or without a disposable probe cover when preferred. The basic principle of these thermometers is that a change of thermistor resistance, caused by changes in temperature, is converted to changes of frequency of R-C oscillator circuit. Therefore, the temperature can be given by measuring the frequency of the oscillator. For a given time period by applying to R-C oscillator circuit, changes of temperature will correspond to changes of pulse number.
A hand-held, battery-powered, electronic instrument designed to measure a patient's body temperature. It may comprise an electronic unit with an attached probe or be a single unit (shaped like an ordinary hand-held capillary thermometer) that detects and converts the changes in temperature into variations of some electrical characteristic, e.g., resistance or voltage. These variations of the electrical characteristics are processed in the electronic circuits and in turn displayed, for a short period, as temperature readings. Thereafter the display will automatically turn off or go into standby mode. This is a reusable device.