Why did it get damaged due to temperature changes?
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Half a year ago, there was a change at the head of the workshop as a new leader took office, and there were many stories surrounding it. Let’s talk about some recent allusions. At a certain temperature, the resistance value was around 124–125 ohms; the temperature was approximately 60 degrees. The temperature variation range was from 100 to 0, and the control system indicated that it had reached the full scale. After maintenance, the resistance value was measured again, and then the output current resulting from the temperature variation was measured – it was 33 mA. As a result, a new temperature sensor was installed. Okay, it’s back to normal. Upon returning to the workshop, I reported the replacement matter at the daily workshop meeting. The new manager posed his usual question: why did it break? Don’t be a gauge replacement worker – such workers can be found everywhere. You should become a repair technician; you need to understand why things break down, ensure that all faulty temperature sensors are recalibrated to figure out the cause of the problems, and acquire the specialized repair skills that are essential in this field. Haha. You say why is it broken? How do I know why it broke? Does he know why it broke? With highly integrated temperature changes, once it’s confirmed that the device is damaged, can the checks you perform help determine why it failed? Are you better than the manufacturer? Can you achieve chip-level repair and testing capabilities? The leader keeps talking nonsense; I’m lost in my thoughts. . . . . :lol
It’s not a lie; it’s just that the timing is wrong. If this were said 50 years ago, it would definitely be true. Forgive him – he’s old now……
Everyone goes their own way and eats their own food.
I’ve seen this kind of leadership too often – full of empty promises and theories, with nothing practical at all! With this highly integrated and specialized division of labor in technology, we are able to locate faults – and that is indeed an ability! Why it’s bad, how it’s bad, how to fix it – that’s another specialized field; how could I possibly know that? It’s enough to learn a bit more about it :)
If the warranty period hasn’t expired, just replace it.
In my opinion, what was said is correct; understanding the cause of the damage can help prevent it from happening again； If the transmitter is damaged due to unstable power supply, we can install a voltage stabilizer ； The on-site environment is humid; measures to reduce humidity can be considered ； If it’s a product quality issue, one can use products of good quality and eliminate those of poor quality...
I don’t think I said what the manager said. The so-called statement about finding out why the instrument is broken and fixing it is incorrect; what I said was that in this case, his words were wrong. Why? Since I have already ruled out external factors such as water ingress and the like, I wonder why, given that the temperature change should result in an output of around 10 mA, the actual output is 33 mA. Can you conduct experiments to find out why this is happening? Can it be repaired? Have you disassembled a temperature sensor? These words from the leader are completely appropriate in certain cases, but when applied to this temperature change case, all I can do is say haha, haha, haha – three times
A temperature controller that costs a few hundred yuan – is it really worth considering? It’s better to focus efforts on control valves, systems, flow meters, etc.; with just a little effort, those can cost tens of thousands of yuan.