- This circuit is intended for precision centigrade temperature measurement, with a transmitter section converting to frequency the sensor’s output voltage, which is proportional to the measured temperature.
- The output frequency bursts are conveyed into the mains supply cables.
- The receiver section counts the bursts coming from mains supply and shows the counting on three 7-segment LED displays.
- The least significant digit displays tenths of degree and then a 00.0 to 99.9 °C range is obtained.
- Transmitter-receiver distance can reach hundred meters, provided both units are connected to the mains supply within the control of the same light-meter.
precision centigrade temperature measurement(digital remote thermometer)
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