Freezer temperature monitor and alarm
1982
Ramakrishnan, K. | Vijayabharathi, K. | Sivadas, T.K.
An electronic instrument for measuring freezer temperature in the range of +40 to -40°C is described. The salient features of the instrument are remote display (digital and analogue versions with an accuracy of ± 0.1 and ± 0.5°C respectively) and provision for continuous record of temperature. Two types of sensors using thermistor and P. N. function of transistor were used for temperature sensing.
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