A high stability mains-operated recording thermistor thermometer
A W Melville · Journal of Scientific Instruments · 1958
A simple recording thermometer is described which is mains operated, has a total variation at less than 1% for a mains variation of 10% and a warm up time of less than 5 min. With the given constants full scale deflexion corresponds to 10° F. Any suitable 1 mA recorder may be used.