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What should I pay attention to when buying digital thermometer?

May 11, 2020
With the improvement of people's material living standard, more and more families choose to buy digital thermometer. Do you know the principle and structure of the electronic thermometer? Do you know what to pay attention to when buying digital thermometers?

The principle and structure of digital thermometer: digital thermometer is made of the principle that the resistance value of temperature sensing element (usually thermistor) changes with the change of environment temperature.

Generally, digital thermometer is composed of four parts, the head is a temperature sensing part, the body is a digital temperature display, the side is a power switch button, and the end is a battery box and a cover. Electronic thermometer reading intuitive, easy to carry, compact and novel, not easy to damage, than ordinary mercury thermometer more easy to keep.

digital thermometer

Pay attention to the following points when purchasing electronic thermometers

1. Check whether the appearance of digital thermometer is free of obvious crack, burr, scratch and dirt, and the parts shall not be loose.
2. Check that the prompt tone of digital thermometer is clear and loud, and the number displayed on the display screen is clear and complete.
3. Digital thermometer shall be attached with operation manual and inspection certificate.
4. Digital thermometer shall be marked on the appropriate position of the product or the attached documents: product name and model, manufacturer, product registration number, executive standard number, production license number, power supply voltage, date or batch number of manufacture, CMC measurement license number, CPA type evaluation license number (only applicable to infrared thermometer).

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