Regarding transmitter measurement issues
Thread Content
There is a gauge with a range of 0-60 KPA, but it can currently only measure values between 0-15 KPA. What could be the reasons for this? Please explain your reason.
Could you explain it more clearly? What does it mean that it can only measure 0-15 kPa? Does it reach full scale at 15 kPa?
1. Check whether the range setting is correct. 2. Some transmitters have high and low range settings, which should be checked. 3. Check whether the data of external pressure sources is accurate.
That’s the highest value it can reach
Why isn’t anyone answering? None of you can do it?
The actual pressure is likely at most 15 KPa, which does not reach the maximum range of the gauge!
If there are no setting errors, it can only be assumed that the measuring diaphragm element is damaged; it should be repaired.
How do you know that the range is 0-60kPa? Should I check the markings on the enclosure or the internal parameters of the transmitter? If it is possible to view the internal parameters of the transmitter, try changing the range. Determine the exact value of the pressure being measured; use a pressure calibration pump to apply pressure and see if the measured reading changes
To address this issue, it is necessary to clarify the situation before and after the fault occurred: 1. What was the original range of that gauge? 15 or 60? 2. If the original range was 60 and it changed to 15 after some time, there could be 3 reasons for this! A. Has the range been adjusted? B. Instrument failure. C. The medium being measured has only a value of 15. 3. If the original range is 15, it’s possible that the full scale has already been reached. 4. Instrument fault diagnosis also relies on inspection, auscultation, interrogation, and palpation
Try adjusting the range after pressurizing it with a pressure pump
To address this issue, it is necessary to clarify the situation before and after the fault occurred: 1. What was the original range of that gauge? 15 or 60? 2. If the original range was 60 and it changed to 15 after some time, there could be 3 reasons for this! A. Has the range been adjusted? B. Instrument failure. C. The medium being measured has only a value of 15. 3. If the original range is 15, it’s possible that the full scale has already been reached. 4. Instrument fault diagnosis also relies on inspection, auscultation, interrogation, and palpation. I agree with what he said
Thank you all for your help. The original range of this table was 60; after using it for some time, the problem I mentioned arose
A punctured diaphragm should not affect the measurement range, but oil leakage will.
Can’t it be adjusted back even with a handheld controller?
It’s likely that the range of this gauge has been modified! For example: I need to measure values between 0 and 15 KPa, but I only have a gauge that ranges from 0 to 60 KPa; I can still achieve my goal by adjusting the range of the gauge. This might be the case with your watch. Just find someone to change the range back. But the original poster said it turned out that way after being used for some time; maybe the gauge is broken, so it should be sent back to the factory for repair.
I have never encountered the situation the original poster is talking about