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Regarding the issue of the installation depth of the temperature probe

2017-04-24 View Original

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When installing the temperature probe, it was found to be too long – it only reached the bottom of the pipe after being inserted. What are the consequences and risks of this? We have two options; the other option involves no problems with installation, as the insertion depth is half the diameter of the pipe.
Reply #2 2017-04-24
There is a deviation in the detection temperature, and pipeline vibrations can cause the probe to be damaged
Reply #3 2017-04-24
The pipeline vibration is not significant; I’m worried about deviation. How much deviation will there be if I do this?
Reply #4 2017-04-24
The probe is too long; once it’s inserted, it only reaches the bottom of the pipe, so what is detected is essentially the wall temperature, which is likely to differ significantly from the temperature at the center of the pipe. A part of the longer one can be trimmed off.
Reply #5 2017-04-24
Bro, it’s a thermal resistor; once a part of it is broken off, it can no longer be used.
Reply #6 2017-04-24
Is that the case? The connector is movable; insert it a little shallower. If it’s a fixed connector, it’s better to replace it
Reply #7 2017-04-24
It has an impact. ①As you know, the temperature sensing element of a temperature gauge should be installed at 1/3 of the way along the pipe (where the fluid flow is fastest, allowing for an accurate reflection of the fluid temperature). The areas on the sides are slower, and the pipes themselves also dissipate heat; it’s easy to imagine the impact if your temperature-sensing element is in contact with the pipe walls. But it’s hard to say exactly how much of an impact it has. After all, there are many influencing factors (flow rate, pipeline insulation, and the speed of heat transfer in the pipelines). ②If an appropriate length for the thermometer is not available, my personal suggestion is to fabricate a adapter with an M27 external thread on one end and an M27 internal thread on the other; the length of this adapter should be such that the thermometer can just reach 1/3 to 2/3 of the length of the pipe. ③Your temperature requires a binary logic decision; the importance of this temperature is truly extraordinary. Standard installation is recommended.
Reply #8 2017-04-24
It is certain that inserting it until the tube is basically full is inappropriate. If it’s a resistor, it’s recommended to use a device with an appropriate insertion depth, as the cost isn’t high. An insertion depth of 1/3 to 1/2 of the pipe diameter is acceptable. If the investment in equipment replacement is high, the following methods can be adopted: 1. Use an enlarged pipe for smaller diameters; 2. Install it at a 45-degree inclined angle in counterflow. Make the insertion depth more reasonable

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