In an application where we have an off-line analytical instrument looking at a fluid stream, we are cleaning the sensor every week (deposits on the sensor degrade its performance). Even with that, the instrument is failing to respond to a check signal 10 % of the time. Are there any standards or guides (ISA, IEEE, etc.) that quantify whether 10 % is acceptable or not acceptable? My experience tells me this is very poor performance, however, convincing the money men to look at new technology will be difficult. TIA
- posted
16 years ago