Pressure Indicator range
Pressure Indicator range
(OP)
Hi guys,
I need to specify the pressure range for indicator after the glycol pump with PSV set pressure 30,5 barg and normal discharge pressure 12,5 barg.
I thought that 60% of the set pressure would be ok as a maximum,but I am not sure.
Could you please guide me how should I set up range for this PI?
thanks,
thechman81
I need to specify the pressure range for indicator after the glycol pump with PSV set pressure 30,5 barg and normal discharge pressure 12,5 barg.
I thought that 60% of the set pressure would be ok as a maximum,but I am not sure.
Could you please guide me how should I set up range for this PI?
thanks,
thechman81





RE: Pressure Indicator range
In your example you should specify the pressure range for a mechanical gauge after the glycol pump to exceed the PSV set pressure 30,5 if practical. See if a common range in a compound gauge is suitable. 35 barg and 41 barg correspond to common psig ranges. I would recommend the 35 bar scale if available. Consider a liquid filled gauge downstream of a pump.
Devices called gauge savers limit the pressure that the gauge sees. I have know people who applied these in your situation. I would exclude devices that show a different pressure than actually exists.
RE: Pressure Indicator range
but absolutely, have the max range above the PSV setting. otherwise you might be flying blind some of the time.
RE: Pressure Indicator range
For both gauge and transmitter, set the range to cover the PSV. Your operating point is roughly in the middle third anyway.
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