红外DGA和衰老的油 - 可能没有重新校准？
Infrared technologies, whether PAS or NDIR, are a great option for DGA monitoring. Infrared also makes it possible to create a maintenance-free DGA monitor that does not need any recalibration — if you can solve the challenge of oil aging.
Dealing with and managing aging oils
IR gas detection is a fundamental method that relies on simple physics. Each gas has a certain IR wavelength which they absorb, and this principle is used to both identify the gases and measure their concentrations.
另一方面，服务中的变压器油在化学成分中非常复杂。使情况随着氧化，热应力等而随着时间的流逝而变得更具挑战性的石油衰老。
这导致形成新的化合物 - 碳氢化合物，有时是蒸发的，具有与断层气体相同的吸收波长。这正是问题：IR吸收重叠。当新化合物干扰分析的断层气体时，它会导致DGA结果中的错误。
当然，您可以重新校准DGA监视器，但这意味着将其脱机，从而导致成本和生产率损失。
It's exactly why we asked ourselves if we could eliminate the effect of gas interference without resorting to costly recalibration.
您如何在基于IR的DGA监视器中处理老化油？
Vaisala的Optimus™Opt100在线DGA监视器包含了一种独特的方法，简单地称为自动校准. The monitor frequently and automatically analyzes the oil composition, and compensates for interfering gases — entirely eliminating the need for recalibration.
这是确认Vaisala Optimus™Opt100在线DGA监视器的长期稳定性和无维护操作的功能之一。
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