Is the insertion depth of bimetallic thermometer the same as the length of probe?

Time: 2020-08-28
Summary: As a professional thermometer manufacturer,sometimes we received the enquiry of customized bimetal thermometer, the relationship between the insertion depth of the bimetal thermometer and the length of probe will be unclear by the customers.Many people think they are the same meaning. Let's talk about the relationship between them.
As a professional thermometer manufacturer,sometimes we received the enquiry of customized bimetal thermometer, the relationship between the insertion depth of the bimetal thermometer and the length of probe will be unclear by the customers.Many people think they are the same meaning. Let's talk about the relationship between them.

Generally speaking, the insertion depth of bimetallic thermometer should be at least 40mm from the end of the temperature sensing tube,Special temperature range (0-50c) requires 50 mm, that is length over 50 mm is OK.In addition, the installation method of bimetallic thermometer should also be considered,For example, bimetallic thermometers for pipes,If the connection base or flange is installed on the pipe, the length of these fittings should be included.So when we describe the insertion depth of bimetal thermometer, we will say with or without thread.If the insertion depth is **mm,The insertion depth = the length of probe + the length of screw thread.If the insertion depth is without thread, the insertion depth = the length of probe.
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The working principle of bimetal thermometer is that the thermal bimetallic sheet wound into a spiral shape is used as a temperature sensing device.One end of the sleeve is fixed, which is called the fixed end, and the other end is connected to a thin shaft, which is called the free end.A pointer is installed on the free end line shaft.When the temperature changes, the free end of the temperature sensing device will rotate, driving the pointer on the fine axis to change the angle, indicating the corresponding temperature on the dial face. It can directly measure the temperature of liquid, steam and gas medium in the range of - 50 ℃ - + 500 ℃.It is also very convenient to use as long as the the probe is inserted into the measured medium.

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