Equipment and Calibration History
Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 [41] 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68| Ser No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| PS-30M 22678-0999 | 2017-08-07 | Lab none | Disposed | Disposed | I decided it time to dispose on this controller. I put it in the dead electronics box. |
| PS-30M 22678-0999 | 2017-06-14 | Lab none | Installed | East End-Temp2 Solar Controller | Installed at the Temporary Tower 2 Closed Canopy location. |
| PS-30M 22678-0999 | 2017-08-04 | East End-Temp2 Solar Controller | Removed | Lab none | Removed from the East End Temporary Tower 2 Closed Canopy location. The Solar input terminals looked fried and it was no longer providing power to the tower. |
| GP-001 GP20140017 | 2017-08-02 | West Pond CO2 Probe B | Removed | Lab none | Removed from West Pond due to railed high CO2 readings and no change when removed from the water. Temperature looked okay |
| LI-7500A 75H-2514 | 2017-08-02 | Sherman Wetland Gas Analyzer CO2/H2O | Removed | Lab none | Removed for calibration and replaced by 75H-2182 |
| LI-7500A 75H-2182 | 2017-08-02 | Lab none | Installed | Sherman Wetland Gas Analyzer CO2/H2O | Replaced 75H-2514 at Sherman Wetland. |
| LI-7500A 75H-2669 | 2017-08-01 | Lab none | Calibration | Lab none | Last calibration: 2017-03-21 AGC=100.1 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=24.0C, Tdew=15.8C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9191 -> .9199 Offset: 3.65ppm CO2 span 1.0115 -> .9533 Offset: 33.15ppm H2O zero 0.8978 -> .9118 Offset: 78.4ppm H2O span 1.0138 -> .8978 Offset: 2.66ppm Notes: Manually entered in existing coefficients before the calibration because did not have existing config file (usual laptop was elsewhere). Maybe I had entered the coefficients incorrectly in the database? |
| LI-7500A 75H-2667 | 2017-08-01 | Lab none | Calibration | Lab none | Last calibration: 2017-03-21 AGC=100 SDM= DAC1= DAC2= Ambient P=100.1kPa, Tair=23.2C, Tdew=19.4C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9423 -> .9443 Offset: 8.88ppm CO2 span 1.0144 -> .9346 Offset: 59.3ppm H2O zero 0.838 -> .8578 Offset: 144.2ppm H2O span 1.0219 -> .9724 Offset: 1.09ppm Notes: Reset signal strength from 113 to 100. H2O at ambient was about 900 mmol/m3, which seems higher than usual. Manually entered in existing coefficients before the calibration because did not have existing config file (usual laptop was elsewhere). Maybe I had entered the coefficients incorrectly in the database? |
| CR10X 31308 | 2017-07-26 | Bouldin Corn Data Logger Diffuse PAR | Location | Bouldin Corn Data Logger Diffuse PAR | Check the serial number of the data logger at the site. |
| LI-7500A 75H-2668 | 2017-07-26 | Lab none | Installed | Bouldin Corn Gas Analyzer CO2/H2O | Replaced 75H-2182. |
| LI-7500A 75H-2182 | 2017-07-26 | Bouldin Corn Gas Analyzer CO2/H2O | Removed | Lab none | Brought down for calibration and replaced by 75H-2668. |
| GMT221 F4960018 | 2017-07-12 | Twitchell Alfalfa | Removed | Lab none | Removed from Twitchell Alfalfa because it was reading 0. It was in set A, 8 cm (the second depth). |
| LI-7500A 75H-2668 | 2017-07-25 | Lab none | Calibration | Lab none | Last calibration: 2017-03-14 AGC=100.2 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=21.4C, Tdew=13.0C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9392 -> .9395 Offset: 1.41ppm CO2 span 1.0131 -> 1.0159 Offset: -1.5ppm H2O zero 0.9041 -> .9047 Offset: 3.2ppm H2O span 1.0063 -> 1.0107 Offset: -.10ppm Notes: |
| CR1000 47110 | 2017-07-19 | East End Data Logger Met | Upgrade | East End Data Logger Met | Upgraded operating system to 31.08. |
| CR10X 25799 | 2017-07-14 | Lab none | Installed | Sherman Wetland Data Logger Diffuse PAR | Installed at Sherman Wetland tower as part of a diffuse PAR sensor. |
| BB-Fab BB-TF | 2017-07-12 | Tonzi-Floor | Maintenance | Tonzi-Floor | The six batteries at the Floor site tested good. I added four batteries from the Tower BB that still tested good. |
| BB-Fab BB-TT | 2017-07-12 | Tonzi | Maintenance | Tonzi | I swapped out the eight batteries remaining in the Tower battery bank sn BB-TT and replaced them with twelve new Duracell deep cycle marine group 27 lead acid batteries SLI27MDC from Batteries Plus. It’s still a 12V system pending a major rewiring in the future. |
| LI-7700 TG1-0421 | 2017-07-13 | Lab none | Calibration | Lab none | Calibration Location: Lab
Last calibration: 2017-04-03 RSSI=72.1%, Optical RH=3% Ambient P=100.3kPa, Tair=22.4C Zero Air at 1400psi, NOAA Air 1.89919 at 1500 CH4 Zero Offset: 0.010ppm CH4 Span Offset: 0.0519ppm Notes: First calibration after replacing the circuit power board. Ambient CH4 = 1.98 |
| CS450 20010026 | 2017-06-23 | Lab none | Installed | Sherman Wetland Water Level | Installed at Sherman Wetland tower |
| PQS 1 140457 | 2017-07-14 | Lab none | Installed | Sherman Wetland PAR Sensor Diffuse | Installed at Sherman Wetland tower as part of a diffuse PAR sensor |
| PQS 1 140456 | 2017-07-14 | Lab none | Installed | Bouldin Corn PAR Sensor Diffuse | Installed at Bouldin Corn tower as part of a diffuse PAR sensor |
| LI-7700 TG1-0421 | 2017-07-14 | Lab none | Installed | Bouldin Corn Gas Analyzer CH4 | Installed at Bouldin Corn tower |
| LI-7700 TG1-0421 | 2017-07-13 | Lab none | Repair | Lab none | Replaced the power supply circuit board (9977-073) in the LI-7700. The analyzer was having a few problems before this repair: atmosphere pressure was about 40-50 kpa, spin motor did not work, fluid pump did not work. Li-cor emailed the replacement board as a warranty replacement (no cost). We opened up the bottom enclosure plate and the enclosure cylinder to replace the board. After the repair, the pressure read 100.1 kPa and the spin motor and fluid pump both worked. |
| LI-7700 TG1-0421 | 2017-07-12 | Bouldin Corn Gas Analyzer CH4 | Removed | Lab none | Brought back to the lab to replace its power board. Power board provided by Li-cor. |
| LAI-2250 PCH-4057 | 2017-07-13 | Lab none | Upgrade | Lab none | upgraded wand firmware to v1.20 |
| LAI-2250 PCH-4058 | 2017-07-13 | Lab none | Upgrade | Lab none | upgraded firmware to v 1.20 |
| LAI-2270C PCA-3914 | 2017-07-13 | Lab none | Upgrade | Lab none | Firmware upgrade v2.0.2 |
| SRS-Ni NDVI 2046503354 | 2017-06-05 | Lab none | Installed | Mayberry Narrow Band NDVI Reflected | Installed at outgoing position on Mayberry Tower. |
| LI-7500A 0418 | 2017-07-03 | Lab none | Installed | West Pond Gas Analyzer CO2/H2O | Installed at West Pond to replace 75H-2668. |
| LI-7500A 75H-2668 | 2017-07-03 | West Pond Gas Analyzer CO2/H2O | Removed | Lab none | Removed from West Pond for calibration. Replaced by 75H-0418. |
| PAR-LITE 040412 | 2017-07-03 | East End-Temp1 PAR Sensor Reflected | Location | East End-Temp1 PAR Sensor Reflected | Checked serial number. |
| NR-LITE 990352 | 2017-07-03 | East End-Temp1 Net Radiometer | Location | East End-Temp1 Net Radiometer | Checked serial number. |
| SRS-Ni NDVI 2046503344 | 2017-06-05 | Lab none | Installed | East End Narrow Band NDVI Reflected | Installed on the East End tower to measure outgoing/reflected light. |
| NOAA-CMDL CA04951 | 2006-10-30 | Factory | Calibration | Factory | Calibrated at NOAA-CDML to WMO standards: 2240.76ppm CO2 SDEV 0.08ppm. Document on file |
| NOAA-CMDL CA03911 | 1999-10-19 | Factory | Calibration | Factory | Calibrated at NOAA-CDML to WMO standards: 402.81ppm CO2 SDEV 0.03ppm. Document on file |
| NOAA-CMDL CA03911 | 1999-08-16 | Factory | Calibration | Factory | Scott-Marrin Inc. Report of Analysis 404 +/- 4ppm CO2 balanced in ultrapure air. Document on file. |
| NOAA-CMDL CA04119 | 2017-06-23 | Factory | Calibration | Factory | Calibrated by Ameriflux at LBNL CO2: 524.77 +/- 0.03ppm, CH4: 4223.8 +/- 0.4ppb, H2O 99.57 +/- 0.89ppm |
| NOAA-CMDL CA03923 | 2017-06-23 | Factory | Calibration | Factory | Calibrated by Ameriflux at LBNL CO2: 474.19 +/- 0.01ppm, CH4: 3121.0 +/- 0.1ppb, H2O 81.47 +/- 1.55ppm |
| NOAA-CMDL CA04396 | 2017-06-23 | Factory | Calibration | Factory | Calibrated by Ameriflux at LBNL CO2: 408.91 +/- 0.08ppm, CH4: 1949.7 +/- 0.1ppb, H2O 10.16 +/- 1.31ppm |
| NOAA-CMDL CA04119 | 2017-07-05 | Factory | Returned | Lab none | Returned from Ameriflux at LBNL |
| NOAA-CMDL CA04119 | 2017-05-11 | Lab none | Shipped | Factory | Sent to Ameriflux at LBNL to be filled with CO2, CH4, H2O standard. |
| NOAA-CMDL CA03923 | 2017-07-05 | Factory | Returned | Lab none | Returned from Ameriflux at LBNL |
| NOAA-CMDL CA03923 | 2017-05-11 | Lab none | Shipped | Factory | Sent to Ameriflux at LBNL to be filled with CO2, CH4, H2O standard. |
| NOAA-CMDL CA04396 | 2017-07-05 | Factory | Returned | Lab none | Returned from Ameriflux at LBNL |
| NOAA-CMDL CA04396 | 2017-05-11 | Lab none | Shipped | Factory | Sent to Ameriflux at LBNL to be filled with CO2, CH4, H2O standard. |
| NOAA-CMDL CA04119 | 2000-04-04 | Factory | Calibration | Factory | Calibrated at NOAA-CDML to WMO standards: 421.22ppm +/- 0.14ppm CO2 SDEV 0.04ppm. Document on file |
| NOAA-CMDL CA04119 | 1999-12-22 | Factory | Calibration | Factory | Scott-Marrin Inc. Report on Analysis 430 +/- 4ppm CO2 balanced in ultrapure air. Document on file. |
| NOAA-CMDL CA03923 | 1999-08-16 | Factory | Calibration | Factory | Scott-Marrin Inc. Report on Analysis 347 +/- 3ppm CO2 balanced in ultrapure air. Document on file. |
| NOAA-CMDL CA03923 | 1999-09-01 | Factory | Calibration | Factory | Calibrated at NOAA-CDML to WMO standards: CO2 344.95ppm 0.01ppm SDEV balanced in dry air |
| NOAA-CMDL CA04396 | 2000-04-04 | Factory | Calibration | Factory | Calibrated at NOAA-CDML to WMO standards: 370.91ppm +/- 0.10ppm CO2 SDEV 0.02ppm. Document on file |
| NOAA-CMDL CA04396 | 1999-12-22 | Factory | Calibration | Factory | Scott-Marrin Inc. Report on Analysis 376 +/- 4ppm CO2 balanced in ultrapure air. Document on file. |
| PAR-LITE 040412 | 2017-06-01 | Lab none | Installed | East End-Temp1 PAR Sensor Incoming | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. It is facing up measuring incoming PAR |
| NR-LITE 990352 | 2017-06-01 | Lab none | Installed | East End-Temp1 Net Radiometer | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. |
| HMP45AC W0730036 | 2017-06-01 | Lab none | Installed | East End-Temp1 RH & Temp | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. |
| LI-7500A 0418 | 2017-07-02 | Lab none | Calibration | Lab none | Last calibration: 2017-06-21 AGC=97.9 SDM=1 DAC1=- DAC2=- Ambient P=100.37kPa, Tair=19.11C, Tdew=17.16C Zero Air at 1300psi, AMP CO2 513.22 at 350 Tdewspan=16.0 CO2 zero 0.8992 -> 0.8995 Offset: -2.76ppm CO2 span 0.9985 -> 1.0066 Offset: -0.12ppm H2O zero 0.8432 -> 0.8436 Offset: 19.4ppm H2O span 0.9806 -> 0.9847 Offset: 4.79ppm Notes: Large changes were seen on 6/13 after upgrading to 7500A. These were checked on 6/20 and 6/21 and the large changes were rolled back but apparently no configuration files were saved, so the last saved coefficients were the bad ones from 6/13 where CO2zero=0.9903, CO2span=1.0066, H2Ozero=0.8410 and H2Ospan=1.2209. The current cal looks good in comparison to the coefficient written down from 6/21. |
| SRS-Nr NDVI 943203022 | 2017-06-23 | Sherman Wetland Narrow Band NDVI Reflected | Removed | Lab none | Removed from the Sherman wetland site and replaced by a hemispherical model to better capture the tower footprint |
| CS451 70011234 | 2017-06-23 | Sherman Wetland Water Level | Removed | Lab none | Removed from the Sherman Wetland site due to NaNs in the data stream. |
| N940-5APE.W 03387648 | 2017-06-02 | Lab none | Loaned | Loaned | Loaned to Patty Oikawa at CSU East Bay for use with her LGR isotope system to be deployed at the Sherman wetland site. |
| KD140SX-UFBS 11ZV0M0855 | 2017-06-23 | Lab none | Installed | East End-Temp3 Solar Panel A | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| KD140SX-UFBS 11ZV0M0836 | 2017-06-23 | Lab none | Installed | East End-Temp3 Solar Panel B | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| U24-002-C 11020258 | 2017-06-23 | Lab none | Installed | East End-Temp3 Conductivity Sensor | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| LI-7700 TG1-0424 | 2017-06-23 | Bouldin Alfalfa Gas Analyzer CH4 | Installed | East End-Temp3 Gas Analyzer CH4 | Moved from Bouldin Alfalfa to be installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| LI-7500 0976 | 2017-06-23 | Lab none | Installed | East End-Temp3 Gas Analyzer CO2/H2O | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| WM 1590 120907 | 2017-06-23 | Lab none | Installed | East End-Temp3 Anemometer | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| CS451 20010046 | 2017-06-23 | Lab none | Installed | East End-Temp3 Water Level | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| HFP01 000137 | 2017-06-23 | Lab none | Installed | East End-Temp3 Heat Flux Plate B | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| HFP01SC 00245 | 2017-06-23 | Lab none | Installed | East End-Temp3 Heat Flux Plate A | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| AM16-32A 1238 | 2017-06-23 | Lab none | Installed | East End-Temp3 Multiplexer | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| NL115 6761 | 2017-06-23 | Lab none | Installed | East End-Temp3 Interface NL115 | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| CR1000 50889 | 2017-06-23 | Lab none | Installed | East End-Temp3 Data Logger Met | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| CR1000 23865 | 2017-06-23 | Lab none | Installed | East End-Temp3 Data Logger Flux | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| KD140SX-UFBS 11ZV0M0828 | 2017-06-14 | East End-Temp2 none | Installed | East End-Temp2 Solar Panel A | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| KD140SX-UFBS 11ZV0M0829 | 2017-06-14 | East End-Temp2 none | Installed | East End-Temp2 Solar Panel B | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| PAR-LITE 050597 | 2017-06-14 | Lab none | Installed | East End-Temp2 PAR Sensor Reflected | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| NR-LITE 021029 | 2017-06-14 | Lab none | Installed | East End-Temp2 Net Radiometer | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| HMP45AC U3030046 | 2017-06-14 | Lab none | Installed | East End-Temp2 RH & Temp | Installed on the East End Temporary Tower #2 Closed Canopy location with the initial tower set up. |
| CS451 70011236 | 2017-06-14 | Lab none | Installed | East End-Temp2 Water Level | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| HFP01 10809 | 2017-06-14 | Lab none | Installed | East End-Temp2 Heat Flux Plate B | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| HFP01 6499 | 2017-06-14 | Lab none | Installed | East End-Temp2 Heat Flux Plate A | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| AM25T 4852 | 2017-06-14 | Lab none | Installed | East End-Temp2 Multiplexer Thermocouples | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| CR6 2115 | 2017-06-14 | Lab none | Installed | East End-Temp2 Data Logger | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| LI-7550 AIU-0614 | 2017-06-14 | Lab none | Installed | East End-Temp2 Gas Analyzer CO2/H2O | Installed on the East End Temporary Tower #2 Closed Canpoy location with the initial tower set up. |
| PS-15M 12501584 | 2017-06-01 | Lab none | Installed | East End-Temp1 Solar Controller | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. |
| KD140SX-UFBS 11ZV0M0835 | 2017-06-01 | Twitchell Rice 0 | Moved | East End-Temp1 Solar Panel A | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. |
| CS450 20010770 | 2017-06-01 | Lab none | Installed | East End-Temp1 Water Level | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. |
| HFP01 10822 | 2017-06-01 | Lab none | Installed | East End-Temp1 Heat Flux Plate B | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. |
| HFP01 001604 | 2017-06-01 | Lab none | Installed | East End-Temp1 Heat Flux Plate A | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. |
| CR6 2114 | 2017-06-01 | Lab none | Installed | East End-Temp1 Data Logger Met | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. |
| AM25T 2856 | 2017-06-01 | Lab none | Installed | East End-Temp1 Multiplexer Thermocouples | Installed at the East End Temporary Tower #1 Open Water location with the initial set up of this site. |
| U24-002-C 11020258 | 2017-05-25 | Mayberry Conductivity Sensor B | Removed | Lab none | Removed from Mayberry for use on the temporary tower at East End |
| LI-7500A 0073 | 2017-06-23 | Lab none | Installed | Bouldin Alfalfa Gas Analyzer CO2/H2O | Installed at Bouldin Alfalfa to replace 75H-2667. |
| LI-7500A 75H-2667 | 2017-06-23 | Bouldin Alfalfa Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Bouldin Alfalfa for calibration; replaced by 75H-0073. |
| SRS-Ni NDVI 2046503404 | 2017-06-23 | Lab none | Installed | Sherman Wetland Narrow Band NDVI Reflected | Installed at Sherman Wetland to replace NDVI_out field stop sensor. |
| LI-7500A 75H-2514 | 2017-06-23 | Lab none | Installed | Sherman Wetland Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace 75H-2669. |
| LI-7500A 75H-2669 | 2017-06-23 | Sherman Wetland Gas Analyzer CO2/H2O | Removed | Lab none | Removed for calibration from Sherman Wetland; replaced by 75H-2514. |
| LI-7500A 0418 | 2017-06-23 | Lab none | Calibration | Lab none | Slated to replace 75H-2668 at West Pond; measured unreasonable H20 levels and returned to lab for further calibration. |
| LI-7500A 75H-2668 | 2017-06-23 | West Pond Gas Analyzer CO2/H2O | Adjusted | West Pond Gas Analyzer CO2/H2O | Slated to be removed for calibration but replacement 75H-0418 measured unreasonable H20 levels. |
| miniDOT 1219 | 2017-06-23 | Mayberry DO Sensor D | Moved | East End-Temp3 DO Sensor | Removed MiniDOT (from upper position; it was 1 of 2 sensors in upper position) since water level has been really low and we probably decided 2 sensors was probably enough for a profile. Installed it at EE Temp Tower 3. |
| LI-7500A 0073 | 2017-06-22 | Lab none | Calibration | Lab none | Last calibration: 2017-06-21 AGC=100.4 SDM= DAC1= DAC2= Ambient P=99.8kPa, Tair=25.8C, Tdew=14.5C Zero Air at 1450psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.9574 -> .9572 Offset: -1.08ppm CO2 span 1.0075 -> 1.0084 Offset: -.35ppm H2O zero 0.7305 -> .7307 Offset: 1.2ppm H2O span 1.0071 -> 1.0045 Offset: -.06ppm Notes: Matches well with calibration from previous day. |
| LI-7500A 0073 | 2017-06-21 | Lab none | Calibration | Lab none | Last calibration: 2017-06-13 AGC=101.1 SDM= DAC1= DAC2= Ambient P=99.3kPa, Tair=24.2C, Tdew=12.7C Zero Air at 1450psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.9567 -> .9574 Offset: 2.42ppm CO2 span 1.0065 -> 1.0075 Offset: -.67ppm H2O zero 0.7342 -> .7305 Offset: -21.8ppm H2O span 1.0251 -> 1.0071 Offset: .4ppm Notes: Checking the zero and spans after upgrade from 7500 to 7500A. There are jumps in CO2 zero and span so I will check again tomorrow. |