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From: [email protected]
To: <[email protected]>
Subject: APPS: BS&W meters
Hi Folks,
We have several BS&W meters installed in the crude oil discharge to measure the water content in the water. The meters are capable to measure 0-3% and it outputs 4-20mA. These meters operation bases on capacitance principle. If dry oil passes through the probe, it outputs 4 mA and 20 mA if the oil has 3% of water. The probe card has a
calibration card so the calibration (zero/span) can be adjusted.
The meter full range calibration is achieved by filling the probe volume with a solution of 3% water contents. The problem is that the
calibration should be done quickly otherwise the water gets deposits so the solution dialectric changes and the calibration fails. Stirring the solution during calibration, helped but if bubbles are formed then calibration fails.
Anybody experienced with similar problem or could suggest any way to calibrate the meters?
Thanks,
Jose Chong
From: [email protected]
To: <[email protected]>
Subject: APPS: BS&W meters
Hi Folks,
We have several BS&W meters installed in the crude oil discharge to measure the water content in the water. The meters are capable to measure 0-3% and it outputs 4-20mA. These meters operation bases on capacitance principle. If dry oil passes through the probe, it outputs 4 mA and 20 mA if the oil has 3% of water. The probe card has a
calibration card so the calibration (zero/span) can be adjusted.
The meter full range calibration is achieved by filling the probe volume with a solution of 3% water contents. The problem is that the
calibration should be done quickly otherwise the water gets deposits so the solution dialectric changes and the calibration fails. Stirring the solution during calibration, helped but if bubbles are formed then calibration fails.
Anybody experienced with similar problem or could suggest any way to calibrate the meters?
Thanks,
Jose Chong