Ways and methods for temperature and pressure compensation in flow measurement, and how to implement it in DCS systems
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Ways and methods for temperature and pressure compensation in flow measurement, and how to implement it in DCS systems
It can be implemented through DCS programming (temperature and pressure can use 4-20mA signals, which are fed into the DCS via acquisition modules)
That’s absolutely correct. To add something, the calculation formulas for on-site sensors are necessary in order to be able to program the DCS
1. In early flowmeters, temperature and pressure compensation was carried out within the system; the flowmeter manufacturers provided the calculation formulas, and system engineers wrote programs using statements in a language similar to C. 2. Modern flowmeters generally measure the signal that enters the transmitter of the flowmeter, with compensation being performed by the transmitter itself.
The throttling element I use is a orifice plate for measuring steam. Due to differences in design and operating conditions, temperature and pressure compensation is required; using ideal gas assumptions leads to significant errors, while full-parameter compensation makes it difficult to configure the DCS. I was wondering if there are any good solutions, or if additional hardware is needed. How to achieve it? What formulas does everyone use?
A percentage calculation is performed using the ratio of standard pressure and temperature to the ratio of actual pressure and temperature, and this result is then multiplied by the actual flow rate. It was something like that; I can’t remember exactly.
All signals go into the DCS, and temperature and pressure compensation can be carried out perfectly through DPU configuration. It turns out the company uses Xinhua XDPS for configuration, and it was done in just a few minutes.
Could those upstairs be more specific?