Can the expanded measurement range provided by dual transmitters be understood as meaning that one of the transmitters will always operate outside its rated range?
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The dual transmitter setup expands the measurement range; can it be understood that one of the transmitters will always operate outside its specified range? Let’s discuss this
No, as long as it is within the transmitter’s specified range, there is no risk of operating outside that range
“What does “dual transmitter” mean? Brother Pig, speaking on behalf of Haiyou, said: I don’t understand.
1. It must be within the range of the transmitter’s sensor. 2. It must also be within the range calibrated by the manufacturer; otherwise, expanding the range is useless
Under normal operating conditions, the operating range is always larger than the maximum range of transmitters with a smaller range, within the normal operating range of transmitters with a larger range； In that case, the low-range transmitter will be out of range all the time
I would also like some advice on this issue: will the transmitter get damaged if it remains in an over-range condition?
Can I say that this is an improper selection? Lol. What’s the purpose of doing this anyway? Do transmitters with a large range lack the precision to measure very small values? ?
It depends on the selection of the actual transmitter; for example, in the case of a transmitter with a range of 0-1 Mpa, if the actual operating range is set to 0-0.1 Mpa, it’s not a big problem if this value is exceeded, as the transmitter won’t get damaged. There is also an overpressure limit even if the pressure exceeds 1 Mpa – this limit should be more than 10 times the maximum allowable pressure. However, this may pose a problem for the output side; the transmitter’s output should always be above 20mA, and it is necessary to check whether the acceptance range of the receiving module exceeds this value. Although modules generally don’t get damaged, if they detect abnormal signals, it could still pose risks, especially when this measurement point is involved in certain interlock logic circuits.
This post was last edited by 1111111 on 2018-3-27 at 13:33. In this little world, isn’t there anything called a “dual transmitter”? In this little world, there are two balls; two requests is by no means little at all – it’s quite a lot. It takes two balls just to cause overload; using instruments is nothing but nonsense. :P
For the modules on the receiving end, there are modules corresponding to instruments with a small range, and those corresponding to instruments with a large range. Depending on the operating conditions, the appropriate module is selected automatically; when observing on-site, the instrument with a small range should always be in its full-scale condition. Welcome to continue the discussion
There is no such usage; it does not conform to the standards.