| Model | OSA-Oil I | OSA-Oil II |
| Measured parameters | Crude oil | Refined oil |
| Range | (0-2500)ppb | (0-10000)ppb |
| Accuracy | Oil：≤1% of full scale | |
| Repeatability | Oil：≤2% of full scale | |
| Zero drift | 1% F.S | |
| Span drift | 3% F.S | |
| Calibration period | 3 months | |
| Resolution | 0.1ppb | 10ppb |
| Cleaning system | Automatic cleaning brush（optional） | |
| Operating voltage | （9-30）VDC | |
| Power | 1.1W(non-cleaning mode) | |
| Communication mode | RS485 | |
| Protection level | IP68, under water 60m | |
| Operating temperature | (0-50) ℃ | |
| Size | 207mm* Φ 51mm | |
| Materials | Stainless steel（316L）、POM | |
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