After changing the range of the pressure transmitter, the pressure reads 0
Thread Content
There is a pressure transmitter whose current range is 0 to 450 kPa; the pressure reading is 100 kPa. After changing the range to 0 to 400, the pressure reading became 0, and it returned to normal once the range was changed back
Modified from 475? What is the output current?
The BT200 modified version outputs 4mA
If modified for BT200, it can have its value reassigned
Is the table header still visible? Or can the engineering values be seen from the BT200? Could it be that the company made a mistake?
The transmitter has a 4–20mA output signal, with 4mA corresponding to an output of 0. Could you provide more details on this?
It is likely that a protection mechanism has been set in place to prevent arbitrary changes to the range; once a change is made, the value is forced to be displayed and output at the lower limit.
Does the pressure transmitter have this function too? I’ve never seen it before.
It is likely that no measurement unit was selected; if the default unit is MPa, then 0 will be displayed.
No, it feels more like it’s write-protected
If it’s changed, will the header display correctly? Measure what the current value is