Equipment and Calibration History
History for Licor LI-6400 PSC-0785
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 7020 | 2024-11-13 | Lab none | For Resuse | Lab none | Marked for reuse |
| 5992 | 2022-09-13 | Borrowed none | Returned | Lab none | LI-6400, all components, and batteries were returned from Rizwan. |
| 5910 | 2022-07-20 | Lab none | Loaned | Loaned none | Loaned to Rizwan Rasheed from Ellen Simms' lab for the summer. Other items loaned: 2 9Ah batteries and a 12V power cord. They had originally borrowed Dave Ackerly's 6400 but we couldn't get it to turn on (display remained off). |
| 5911 | 2019-06-03 | Lab none | Loaned | Loaned none | Loaned to Yvonne Socolar. Other material loaned: -10 cartridges -Box of spare parts -Two 12V Battery |
| 3895 | 2019-03-25 | Lab none | Calibration | Lab none | Camilo Rey-Sanchez and Daphne Szutu
Camilo cleaned the light-source leaf chamber (it wasn't too dusty) and attached it to this console for calibration. We connected the reference and sample inlet to the cal gases with a y-junction. Camilo had checked the zeros using the chemicals last week and found them unsatisfactory (we didn't write them down). We set the zero and the span using cal gas and dewpoint generator. Zero: Cal Gas (zero air), flow at 1SCFH: Before: CO2_S:~-15 CO2_R: ~-15 H2O_S: ~-2 H2O_R: ~-2 After: *All fluctuating around zero. Span with AMP 408.97ppm cal gas, flow at 1SCFH: Before: CO2_R: 413 CO2_S: 423 After: *Fluctuating around 409 Span with 16.0C dew point (2019-03-26), flow at 500 CC/min: Before: H2O_R: 17.50 C H2O_S: 18.52 C After: H2O_R: 16.00 C H2O_S: 16.00 C |
| 3599 | 2018-07-16 | Lab none | Calibration | Lab none | Elke Eichelmann & Katrina Cone The 6400 had not been zeroed and spanned for a while. We checked the zero with the chemicals and they were very off, so we set the zero and the span using cal gas and dewpoint generator. Then I zeroed and spanned: Zero: Chemicals: CO2_S: 34.0 CO2_R: 25.4 H2O_S: 13.7 H2O_R: 14.1 Cal Gas (zero air): Before: CO2_S:41.0 CO2_R: 24.3 H2O_S: 3.5 H2O_R: 2.3 After: *All fluctuating around zero. Span with 408.97ppm cal gas: Before: CO2_R: 399.9 CO2_S: 397.1 After: *Fluctuating around 409 Span with 16.0C dew point: Before: H2O_R: 14.69C H2O_S:13.23C After: H2O_R: 16.01C H2O_S: 15.99C **Note: we had to override the maximum slope parameter for the H2O_S to be able to set the slope above 1.100 and to set the correct dewpoint. 'Shift' + 'J' will allow you to override the maximum slope. |
| 2224 | 2016-04-04 | Lab none | Calibration | Lab none | Patty Oikawa 6400 was giving "IRGA's not ready" error in field Discovered mirrors needed to be cleaned AGC scores-- Before cleaning: CO2_S:4937 H2O_S:-1500 After cleaning: CO2_S=2652 H2O_S=399.7 *protocol for cleaning mirrors is in the cabinet in downstairs lab Then I zeroed and spanned: Zero: Before: CO2_S:13.8 H2O_S:-0.997 After: CO2_S:0.0 H2O_S:0.003 Span with 421.22ppm cal gas: Before: CO2_S: 425.4 After: CO2_S: 421.1 (setting 0.998) Span with 11.08C dew point: Before: H2O_S:12.18 After: H2O_S: 11.08 (setting 1.039) |
| 1929 | 2015-08-18 | Lab none | Calibration | Lab none | Zeroed and Spanned in lab
CO2 before zero = -24.7uml after = 0.0uml H2O before zero = -0.252mml after = -0.002mml Ref gas=421.22ppm CO2 before span = 426.6ppm after = 421.9ppm Ref Dew point = 11.08C H2O before span = 10.49C after = 11.08C |
| 1734 | 2015-03-03 | Lab none | Calibration | Lab none | Patty calibrated the LI6400, zero and span.
Zero CO2: -22uml (after calibration: 0.0uml ) H2O: -1.04mml (after calibration: 0.003mml) Span Gas = 421.11ppm CO2: 427.8uml (after calibration: 421.0uml) Dew point gen=15.95 degrees H2O: 16.27 (after calibration: 15.95) |
| 1467 | 2014-06-25 | Lab none | Calibration | Lab none | Madeleine and I calibrated the 6400 in the lab
Zero: CO2 1.45 to 0.0 H2O -0.21 to -0.001 Span CO2 with 421.22 CO2 gas --did not need to span--left at 421.0 H2O span (dew point set at 15.26C) 14.63 to 15.26C |
| 1297 | 2014-05-12 | Lab none | Calibration | Lab none | Zeroed and spanned H2O in the lab
Span: H2O went from dew point 15.56 degrees C to 15.26 Zero: H2O went from 0.1 to 0.0. Also re-zeroed CO2 for instruction purposes Zero: CO2 went from 2.1 to 0.0. |
| 1296 | 2014-05-09 | Lab none | Calibration | Lab none | Zeroed and spanned CO2 on IRGA
Zeroes H2O in IRGA CO2 zeroed from 32 to 0 H2O zeroed 4 to 0 CO2 spanned from 2208.5 to 2238ppm |
| 1093 | 2013-11-05 | Lab none | Calibration | Lab none | Zeroed and spanned H2O and CO2 on IRGA
Neither was far off; CO2 spanned from 419ppm to 421.2ppm H2O spanned from 14.98C to 15.16C using Dew point generator. |
| 1092 | 2013-11-05 | Lab none | Calibration | Lab none | Zeroed and spanned H2O and CO2 on IRGA
Neither was far off; CO2 spanned from 419ppm to 421.2ppm H2O spanned from 14.98C to 15.16C using Dew point generator. |
| 1042 | 2013-08-16 | Lab none | Notes | Lab none | Current firmware is OPEN v5.2.3. Upgrade to new firmware v6.2 is possible. New digital board is also available with Ethernet and CF interfaces see Licor part 6400-926 XT Upgrade Kit. Cost at this time is 50.00 |
| 757 | 2012-08-15 | Factory | Returned | Lab none | Returned from repair and calibration at Licor on RMA 170405. Licor fixed a intermittent power switch, found a D-shaped vinyl gasket on the sample chamber not installed correctly, replaced leaking home made tube plugs, and found a small leak in a loose bottom cap on the desicant tube. Licor calibrated the system.
software version v5.3.2 |
| 758 | 2012-07-13 | Lab none | Shipped | Factory | Shipped to Licor for repair and calibration on RMA 170405. The system has a leak that we have been unable to find. |
| 2466 | 2007-02-20 | Factory | Calibration | Factory | Sent to Licor to check for flow restriction in chemical tubes, test PAR IN stability and calibrate light source. Findings: No CO2 source cover sent. In checking for blockages in the chemical tubes, initially there were none, so I had them rebuilt. In that process we discovered that the small tubes in the bypass valve had been pinched flat. Most likely, they had been left in either the scrub or bypass position for an extended period of time, causing them to be flattened-shut. We replaced them. It is a good idea to out the valve in the center, most relaxed, position for storage. The light source is stable and I could not get it to do anything unusual, even with lots of cable stressing/wiggling. |