Temperature sensors can not be ignored when using the details of the problem

The principle of temperature sensor and installation for most of the industry people already know, but there are two more details in the process of temperature sensor using problems easy to ignore. One is its working temperature, and the other is its insertion depth. Then the next project to specific about temperature sensor can not be ignored when using two details.

the normal work of the temperature sensor element is to meet its working conditions, one of which is its working current, because the temperature sensor has resistance, when current flows through the temperature sensor element, there will be a power loss, fever, so in order to reduce fever, temperature measurement error caused by sensor itself under the condition of meet the normal work of the sensor, try to reduce the fever itself.

this is why the temperature sensor to use in small constant current conditions. Such as the routine work of the platinic resistance current is 5 ma, ma, but we recommend working current is 1. The reason is to reduce measurement error caused by the temperature sensor element self-heating. Current is constant, the output will has a linear relationship of temperature and electric potential.

insert depth of the temperature sensor is also easy to overlook a problem, some customers require insertion depth is short but the diameter is larger, it is not reasonable, especially in the case of high temperature it is not desirable, in theory, the temperature sensor insertion depth can generally be decided according to the actual needs. But the minimum insertion depth should not be less than 8 - the diameter of the temperature sensor to protect casing 10 times. In this way can guarantee the stability of temperature sensor performance.

more high-quality sensors at https://www. rtdcn。 Com /

key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor