Fluid browser blank video7/19/2023 ![]() The new Squarespace editor revolutionising the drag and drop platform. If custom alarm limits are present they will be converted to use the new method.It’s officially public - Fluid Engine is here. How will my flagging or alarm limits be affected?įluid Life will automatically adjust the alarm limits for most oil types to comply with OEM reference limits. For example you can set an alarm limit for oxidation after an increase of 30 above the fresh oil baseline for a particular oil type and trigger additional magnetic iron testing or SEM analysis to check for signs of wear. Fluid Life allows you to set custom flags (alarm limits) and trigger additional testing based up on the results. The direct trend results can be trended and compared to the baseline fresh oil results. The comparison is not a simple multiple and each oil brand has a different conversion. It is not easy to compare spectral subtracted results (height) to direct trend results (area). How do Oxidation, Nitration and Sulfation compare between the two methods? % soot is a calibrated value that is independent of the oil reference. How does % Soot compare between the direct trend and the spectral subtraction method? If an exact match is not found the analysis will be performed but the results cannot be compared against the new oil baseline. Do I need to submit a fresh oil sample as a baseline reference?įluid Life has a large library of new oil reference samples and will attempt to find one that matches your specific oil type. After the initial step change, the results can be trend plotted or simply monitored for the appearance of flags (alarms). Fluid Life will update the flagging limits (alarm limits) and assign a new oil baseline reference if using a common oil type. When the change to FTIR Direct trend become effective you may notice a step change in your Oxidation, nitration or sulfation results. Trend plotting is used to identify changes. New oils have a reference value and increase over time. New oils start at zero (0) and increase in value as the oil ages.ĭirect Trend alarm limits are based on a difference from the new oil reference value. You can observe top-ups or changes in chemistry using a trend plot.įor the Spectral Subtraction methodology, alarm limits (flags) are based on component and oil-based statistical limits. No interferences from new oil spectra or top offs.Flagging limits can be based on the difference from baseline or a conservative absolute value. Direct trend can facilitate simple to understand standardized flagging limits.The exact site, seasonal or geographic new oil references are no longer required. ![]() The Direct Trend methodology eliminates the problems associated with Spectral Subtraction and offers these benefits: Bottom line, the new oil spectrum must be accurate otherwise the analysis will produce misleading or incorrect results. This situation is further complicated if routine top-ups or seasonal oil changes occur. Spectral Subtraction requires an up to date FTIR reference for each and every new oil and as a result, it is difficult or impossible for the end user to provide an accurate reference. We moved to Direct Trend in response to feedback from our customers and to eliminate the problems associated with Spectral Subtraction. Need to collect and provide seasonal new oil reference samples every 6 monthsĪs of Q4 2021, Fluid Life no longer offers the Spectral Subtraction methodology for reporting FTIR Oxidation, Nitration and Sulfation. No interferences from top-ups or different new oilsĭesigned only for samples with 100% known oils Typical warning levels are applied as a difference from the new oil Trend plotting is used to monitor oil degradation There are two main types of Fourier Transform Infrared (FTIR) spectroscopy methods designed to look at new oils: Direct Trend (non-differential) and Differential (used oil minus new oil), also known as the Spectral Subtraction method.
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