Detailed explanation of three types of temperature sensor probes

• time：2023-09-11 14:13:49
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A temperature sensor is a device used to measure the temperature of an environment or object. It can convert the temperature into an electrical signal or a digital signal to facilitate real-time feedback of temperature from the monitoring and control system.

There are mainly two types of temperature sensors: contact type and non-contact type. The probe is an important part of the temperature probe, which is directly related to the accuracy and stability of temperature measurement. Temperature probes can be divided into three main types: penetration (immersion) probes, air temperature probes, and surface probes. This article will explain in detail the differences between the three temperature sensor probes:

1. Penetration (immersion) probe

Penetration (immersion) probes are suitable for measuring the temperature of liquids and solids. Accurate temperature data can be obtained by penetrating objects. The shape of the probe is generally needle-shaped to facilitate measurement. The better the ratio between the probe and the medium, the more accurately the energy obtained by the object can be measured, and the error caused by the measurement can be reduced. To reduce measurement errors, consider the ratio of the probe to the medium and ensure that the depth of penetration or immersion is 10 to 15 times the diameter of the probe. When the measured object is a liquid, try to ensure that the liquid is in a still state.

2. Air temperature probe

Air temperature probes are used to measure the temperature of the air. For example, such probes are often used in air-conditioned rooms and cold storages. The probe is unwrapped in the air and is easily disturbed by the air flow. In order to achieve a balanced and stable temperature, it is best to operate when the air flow is 2- At 3m/s, move the probe slightly to allow the temperature to reach equilibrium.

3. Surface probe

The surface probe is used to measure the temperature of the surface of an object. It should be noted that the contact surface between the probe and the object to be measured must be flat, otherwise measurement errors will occur.

Temperature sensors are widely used in various fields, including meteorology, industrial automation, home appliances, automobiles, medical care, etc. By monitoring and controlling temperature, temperature sensors can help us maintain a comfortable environment, improve production efficiency, ensure product quality, etc.