What Is a Self-Registering Thermometer?
A self-registering thermometer is a thermometer that measures temperature and automatically records the measured temperature.
This makes it possible to track changes in temperature over time.
Similarly, a self-registering thermometer can also be used to measure humidity and pressure at the same time as temperature.
Uses of Self-Registering Thermometers
Self-registering thermometers are used together with self-registering hygrometers and self-registering pressure meters for general weather observation, air conditioning, schools, hospitals, warehouses, etc., since they can automatically measure and record temperature.
A portable self-registering thermometer with handles is also available, and is used to record temperatures in the field where they need to be carried around.
Self-registering thermometers are also available for cold storage of blood, medicine, vaccines, antibiotics, etc., and for recording temperatures in refrigerated freezers where fresh food, dairy products, etc., are stored.
Principle of Self-Registering Thermometers
Self-registering thermometers are devices that can automatically record temperature changes over time.
The principle of recording the measurement results is based on the use of a bimetal or Bourdon tube, the thermal expansion of which drives the pen of the self-registering thermometer, or a platinum resistance thermometer, the change in resistance of which causes the current to change, thereby recording the temperature with a recording ammeter.
Some self-registering thermometers can simultaneously measure and record temperature, humidity, and pressure.
The cartridge pen clearly records changes in temperature, humidity, and pressure over time on round recording paper.
The size of the round recording paper allows for detailed recording of recording conditions, yet is easy to read and use, and is convenient for storage and management.
The easy-to-operate procedure for replacing the recording paper and starting the recording process makes the recording easy.
Storing the measured values of temperature, humidity, and pressure over time on the recording paper ensures reliability of quality control and streamlines work.
The body of the square case has a structure with excellent dustproof, outdoor drip-proof, and confidentiality characteristics, which is ideal for incorporating precision instruments.
Various types of measuring ranges and mounting configurations are available according to the intended use.
The ink capacity of the cartridge pen can record continuously for about one year, even for a 24-hour per revolution case.