Temperature instruments' usage method

Temperature sensor thermocouple's division value

Instrument name accuracy grade division value, ℃ (Celsius)

Bimetal thermometer 1, 1.5, 2.5, 0.5 ~ 20

Thermometer, type 20, pressure 1.5 ~ 5

Glass liquid thermometer 0.5 ~ 2.5 0.1 ~ 10

Thermal resistance 0.5 ~ 3 1 ~ 10

Thermocouple 0.5 ~ 1 5 ~ 20

Optical pyrometer 1 ~ 1.5 5 ~ 20

Radiation thermometer (thermopile) 1.5 ~ 20

Partial radiation thermometer 1 ~ 1.5 1 ~ 20

Colorimetric Thermometer 1 ~ 1.5

Temperature sensor thermocouple's usage method

1. First observe the measuring range, graduation value and 0 point, and the measured liquid temperature shall not exceed the measuring range;

2. All the glass bubbles of the thermometer shall be immersed in the measured liquid and shall not touch the bottom or wall of the container;

3. Wait for a while after the thermometer glass bubble is immersed in the measured liquid, and read after the indication of the thermometer is stable;

4. When reading, the glass bubble of the thermometer shall remain in the liquid, and the line of sight shall be level with the upper surface of the liquid column in the thermometer.

Note: do not throw it before temperature measurement.

Temperature measurement skills

When measuring the surface temperature of luminous objects, such as aluminum and stainless steel, the reflection of the surface will affect the reading of the infrared thermometer. Before reading the temperature, put a rubber strip on the metal surface. After the temperature is balanced, measure the temperature of the rubber strip area.

If the infrared thermometer can walk back and forth from the kitchen to the cold storage area and still provide accurate temperature measurement, it is necessary to measure after a period of time to achieve temperature balance in the new environment. It is best to put the thermometer in a place where it is often used.

Use an infrared thermometer to read the internal temperature of fluid food, such as soup or sauce, which must be stirred, and then the surface temperature can be measured. Keep the thermometer away from steam to avoid polluting the lens and causing incorrect readings.