Equipment and Calibration
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Equipment Entry
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Documents
Calibration: cal_Licor_LI-7810_snTG10-01751_20230731.pdfPackingSlip: ps_Licor_LI-7810_snTG10-01751_20230810.pdf
History
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 6831 | 2024-08-28 | Loaned none | Returned | Lab none | Charlie returned the analyzer with our smart chamber sn 82S-1555, the analyzer AC plug/charger, 4 batteries total, and one set of tubing. |
| 6814 | 2024-08-22 | Lab none | Loaned | Loaned none | Loaned to Charlie Diaz in Rob Rhew's lab for fieldwork on 8/26. Should be able to return it on 8/27 for Biomet fieldwork later in the week. Borrowed with our smart chamber sn 82S-1555, the analyzer AC plug/charger, 4 batteries total, one set of tubing. |
| 6816 | 2024-08-12 | Lab none | Calibration | Lab none | Last zero 2023-12-01 Zero Air, 1450psi CH4 zero offset: 3.4ppb CO2 zero offset: -2.8ppm Last span 2023-12-01 AMP CA03923, 3386.5ppb CH4, 488.75ppm CO2, 1500psi CH4 span offset: -1.25ppb CO2 span offset: 0.96 ppm Previous weight: 0.9980 New weight: ?? Notes: Calibration in the lab before Kuno's field campaign next week. Ran zero and span gases at our usual flow rate of 2 SCFH and plumbed the system with the recommended 30cm vent before the air inlet to vent excess air pressure and to prevent diffusion of ambient air into the gas stream. I spoke with a Licor technical person at AGU (Graham I think) who said that because the laser is tuned to methane, we only need to wait for CH4 to stabilize for the calibration (don't need to wait for H2O). |
| 6815 | 2024-07-19 | Loaned none | Returned | Lab none | Analyzer, smart chamber sn 82S-1555, analyzer AC plug/charger, 3 batteries, and tubing were returned. Not sure if manuals were returned? |
| 6726 | 2024-05-13 | Lab none | Loaned | Loaned none | Loaned to Rob Rhew and Charlie Diaz. They are planning a field campaign this summer at Dutch Slough and first want to test out the analyzer in the lab. Borrowed with our smart chamber sn 82S-1555, the analyzer AC plug/charger, 3 batteries total, one set of tubing, and both manuals. |
| 6481 | 2023-12-01 | Lab none | Calibration | Lab none | Last calibration: 2023-08-22 Zero Air at ???psi, AMP CA04119 4223.8 ppb CH4 at ???psi CO2 zero Offset: -0.024ppm H2O zero Offset: -10.52ppm CH4 zero Offset: 0.129ppb CH4 span Offset: -1ppb Notes: Calibration in the lab before Kuno's field campaign next week. Ran zero and span gases at our usual flow rate of 2 SCFH and plumbed the system with the recommended 30cm vent before the air inlet to vent excess air pressure and to prevent diffusion of ambient air into the gas stream. I waited until the slope of H2O was <0.002ppm to set the zero. I waited until the slope of CH4 was <0.002ppb to set the span. Plan 45min+ for H2O zero to stabilize. I forgot to write down the exact CH4 span offset, but I saved a screenshot and estimated the offset based on the graph. |
| 6395 | 2023-08-22 | Lab none | Calibration | Lab none | Last calibration:
Zero Air at 900psi, AMP CA04119 4223.8 ppb CH4 at 850psi CO2 zero Offset: -20.9ppm H2O zero Offset: -93.5ppm CH4 zero Offset: 0.1ppb CH4 span Offset: 33.7ppb Notes: First calibration in the lab for sn TG10-01751. Ran zero and span gases at our usual flow rate of 2 SCFH and plumbed the system with the recommended 30cm vent before the air inlet to vent excess air pressure and to prevent diffusion of ambient air into the gas stream. It took more than 45min for H2O zero to stabilize. |