In the above, the above small series explains the test in condensed water-alternating climate (test equipment: condensate test chamber) specified in DIN 50018-1997 in the atmosphere containing sulfur dioxide (test equipment: condensate test chamber) Part of the test device function test, let's take a look at this issue.
(4) Removal of corrosion products
Corrosion products should be removed from the sample at temperatures ranging from 18 ° C to 28 ° C. Hydrochloric acid can be used here, containing 3.5 g of cyclohexamethylenetetramine per liter, Ï = 1.10 g/ml, for example 500 ml of concentrated hydrochloric acid HCl, Ï = 1.19 g/ml, chemically pure, with completely desalted water Blend to 1 liter.
Further dissolution can be carried out in accordance with international standard ISO 8407.
When the test piece is corroded, it should be rinsed in water, then dried, and then placed in a desiccator at a temperature of 18 ° C to 28 ° C for weighing.
(5) Weighing of sample pieces
The sample should be weighed 1mg.
(6) Evaluation of the results
The calculated weight reduction should take into account the surface required for corrosion and the calculated value is in g/m2. The intermediate value must be in the range of (125 ± 25) g/m2. The single value deviation of the median value cannot exceed 20%.
Pressure transmitters are used to measure the pressure or level of industrial liquids and gases. The output is transmitted to a control system. Accurate and stable process measurements ensure the safe, reliable, and profitable operation of your plant.Pressure transmitters are a common and well understood technology especially within the petroleum, petrochemical, refrigeration and fuel gas markets and they are extremely economical compared to other technologies.
Pressure transmitters are a common and well understood technology especially within the petroleum, petrochemical, refrigeration and fuel gas markets and they are extremely economical compared to other technologies. If a level is to be made in an open vessel a pressure transmitter (PT) is placed at the bottom and the head pressure caused by the weight of the liquid can be used to calculate the height of the liquid. Differential pressure transmitters can be used on pressurised vessels using the same principles .
Level measurement using pressure transmitters cannot be deployed in primary separators as the change in temperature will impact the measurement, the change in density of the oil during operation will impact the measurement and any fluctuation of the oil/gas differential pressure control valve or pressure disturbances would also impact on the reading.
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