- 95: site visit, Site laser, Wed 13-Aug-2003 15:55:30 MDT, Site visit on Aug. 10
August 10th, 2003
Sunny, hot.
Short visit.
Topped off the LN2 on the laser. Noticed it appeared to running properly
Had a popped breaker (bottom). REset.
didn't seem to have impacted the east robot. It was still operating and had completed its sampling the previous night (Done = 1)
- 88: bowling, Site laser, Tue 22-Jul-2003 12:34:39 MDT, laser switched to new UPS (APC 1500 VA)
On Monday July 21, 2003 the UPS for the laser was switched (need to get
exact UPS model number).
The software for the UPS was not installed since we didn't want it to
interfere with the laser software. There are some usb ports which could
be used to install the monitor the UPS with the laser PC. All cables and
documentation for the UPS are in the tent.
- 87: bowling, Site laser, Tue 22-Jul-2003 12:32:15 MDT, TGA software upgrade to ver 5.06
The TGA software was upgraded at around Noon on Friday, July 18th 2003.
The files which were replaced were:
File: TGA.EXE
Date: 18 Jul 2003, 7:38
Size: 168576 bytes.
Type: PCEXE
File: TGA.OVR
Date: 18 Jul 2003, 7:38
Size: 49438 bytes.
These are on the C: drive in C:\tga\
old files are backed up in C:\tga_505\
- 86: bowling, Site laser, Tue 22-Jul-2003 12:28:26 MDT, Procedure to check laser alignment (from Steve Sargent)
Date: Fri, 18 Jul 2003 08:22:41 MDT
To: "Sean Burns"
cc: aturnip@stripe.colorado.edu, turnip@ucar.edu,
dave Bowling
From: ssargent@campbellsci.com
Subject: TGA software update
Hi Sean,
Sorry this TGA is turning into such a pain to keep it running. I have
attached two files, tga.exe and tga.ovr. These are a new version of
the software that I hope will auto restart more reliably.
To install this new version, first, please save a backup of your
current version, i.e. make a directory "c:\tga_505" and copy the
entire contents of director c:\tga into it. Then just replace tga.exe
and tga.ovr in the c:\tga directory with the new versions.
This won't solve the real problem (the crashes), but I hope it will
avoid the program setting the DC current and ramp B offset to 1,
which is now preventing the automatic startup.
Thanks for wrapping the sample cell - I am anxious to see some new
data to see if this will make the calibration more constant. You
expressed some concern that this may have disturbed the alignment. To
check this:
1) adjust the DC current so that you are NOT on the absorption line,
(start ON the normal line, then increase the DC current 1 or 2 mA)
2) Temporarily change the display in graph 1 to "ref det sig" and
graph 2 to "smp det sig". What are these values? These are the raw
detector signals, an indication of the optical alignment.
3) go back to the normal mode.
4) In the parameter column, select the SMPL Gain (#6) and see what it
shows - it should be "0 A", indicating it is in gain 0 (the lowest
gain) and under automatic control. Repeat for "REF Gain" (#9) - it
should also be "0 A".
I have appended below my notes on what I see in the data - a few more
glitches, consistent with what I have seen before. Also - it looks
like the pressure is a tiny bit higher for cal tank 2. If this trend
continues, we may need to ask you to readjust this.
Thanks for all your efforts there!
Steve
6 July 10:51: manual start, file 07061051
6 July 10:56:42: error 8 (restarted successfully)
6 July 11:01:10 auto restart, file 07061101
glitches at:
6 July 18:28:34
7 July 07:39:30
7 July 12:43:03: error 7 (restarted successfully)
7 July 12:45:45: auto restart, file 07071245
7 July 16:39:50: error 8 (NO restart - DC current 1 mA)
8 July 10:12:19 manual restart, file 07081012
glitches at:
8 July 10:23:25
9 July 00:48:28
9 July 13:26:13
10 July 04:23:47 error 8 (NO restart - DC current 1 mA)
10 July 10:15:36 manual restart, file 07101015
glitches at:
10 July 17:32:19
11 July 07:44:43
11 July 19:57:56
12 July 10:01:37
12 July 23:51:54 (second glitch 90 sec later)
13 July 16:05:03
14 July 00:59:59: error 7
14 July 01:03:26 auto restart, file 07140103
glitch at
14 July 5:48:22
14 July 10:36 stopped TGA to get data
14 July 11:12:13 manual restart, file 07141112
glitches at:
14 July 22:22:19
15 July 12:17:14 (second glitch 163 sec later)
15 July 15:41:08 (this glitch goes up, not down - may be something
else)
16 July 00:58:26: error 8 (NO restart)
The pressure in cal tank 2 seems a little bit (~0.06 mbar) too high.
May need to readjust cal tank pressures soon.
- 76: bowling, Site laser, Thu 10-Jul-2003 17:06:21 MDT, Laser Data Download -- July 10th
Date: Thu, 10 Jul 2003 12:34:24 MDT
To: Dave Bowling , ssargent@campbellsci.com
cc: sean.burns@Colorado.EDU, aturnip@stripe.colorado.edu, turnip@ucar.edu
From: "Sean Burns"
Subject: Re: flat-line...
Return-Path: Sean.Burns@Colorado.EDU
Delivery-Date: Thu Jul 10 12:35:17 2003
In-Reply-To: Your message of "10 Jul 2003 10:12:43 MDT."
<3140676749bowling@biology.utah.edu>
Content-Length: 2123
Dave/Steve,
I put the data files on the web...they are in:
http://urquell.colorado.edu/bowling/data_laser/
i put all the files in a single tar file, tga_030710.tar (less
clicking for you to download)...i think most PCs (windows and unix)
can deal with tar files. if you prefer having every file individually
let me know and I'll do it that way instead. the files in the tar
file are:
tar -tvf tga_030710.tar
-r-xr-xr-x 0/3 14395 Jul 8 16:48 2003 07080948.12c
-r-xr-xr-x 0/3 308 Jul 8 16:48 2003 07080948.hdr
-r-xr-xr-x 0/3 168 Jul 8 16:48 2003 07080948.sm
-r-xr-xr-x 0/3 14395 Jul 8 17:12 2003 07081012.12c
-r-xr-xr-x 0/3 30372620 Jul 10 11:23 2003 07081012.dat
-r-xr-xr-x 0/3 424 Jul 10 11:23 2003 07081012.hdr
-r-xr-xr-x 0/3 892248 Jul 10 11:23 2003 07081012.sm
The laser appears to be running fine again (after resetting it). The
problem which stopped the data collection was the same as that from 2
days ago---the DC current and rampB offset were both 1 mA. Does
something happen which causes the DC current and rampB offset to go to
1 mA? ie, Is this a symptom of a different problem, or is this the
problem itself?? anyway, if there is anything you want me to try let
me know...
Dave, I'll put the 2 CDs I've burned so far in the robot flask
suitcase.
I'm going out to switch the East Robot flasks so if you want me to try
anything with the laser let me know and i'll check my e-mail again in
about 1-2 hours. . .
SpB.
> Thanks Sean. Steve, assuming this is the same issue - how hard
would it be to revamp the software so that it is a bit more
conservative with turning off the laser current? Maybe something like
"if the laser temp appears too high, wait a minute, check again, if
it's still too high, then turn it off"? Or something like that.
> DB
>
> On 7/10/2003 8:09 AM, Sean Burns wrote:
> >
> >Steve/Dave,
> >
> >fyi: laser signals look like zeros this AM. I'm on my
> >way up there. Should have a data file for you in
> >a few hours.
> >
> >
> > SpB.
> >
> >
- 73: bowling, Site laser, Tue 08-Jul-2003 16:54:39 MDT, Laser Data Download -- July 8th
Date: Tue, 08 Jul 2003 11:04:47 MDT
To: bowling@biology.utah.edu, ssargent@campbellsci.com,
Russell.Monson@Colorado.EDU, aturnip@stripe.colorado.edu, turnip@ucar.edu
cc: sean.burns@Colorado.EDU
From: "Sean Burns"
Subject: Laser back up and running...
Hi Dave/Steve,
The laser is up and running again. The problem was that the "DC
current" and "Ramp B Offset" were both at 1. I showed Brant how to
refill the Dewar and how to reset everything following the instruction
sheet. We now have 2 dewars which will make refilling much easier
(We'll leave one dewar down at the tank on our way out today).
Since the laser instruction sheet is so clearly laid out we could
probably train everyone up here how to reset the laser. . .I guess we
can wait and see how often these crashes happen. Also, I can stay
logged into russter and leave cockpit running so when people are up
here they can easily check the laser time series to make sure it is
running properly (or not). I guess it depends how much extra time
people have to do this...
The files I downloaded from the PC are:
-r-xr-xr-x 1 root sys 14395 Jul 6 17:47 07061047.12c*
-r-xr-xr-x 1 root sys 308 Jul 6 17:47 07061047.hdr*
-r-xr-xr-x 1 root sys 168 Jul 6 17:47 07061047.sm*
-r-xr-xr-x 1 root sys 14395 Jul 6 17:51 07061051.12c*
-r-xr-xr-x 1 root sys 59000 Jul 6 17:56 07061051.dat*
-r-xr-xr-x 1 root sys 454 Jul 6 17:56 07061051.hdr*
-r-xr-xr-x 1 root sys 168 Jul 6 17:56 07061051.sm*
-r-xr-xr-x 1 root sys 14395 Jul 6 18:01 07061101.12c*
-r-xr-xr-x 1 root sys 18498480 Jul 7 19:43 07061101.dat*
-r-xr-xr-x 1 root sys 634 Jul 7 19:43 07061101.hdr*
-r-xr-xr-x 1 root sys 543912 Jul 7 19:43 07061101.sm*
-r-xr-xr-x 1 root sys 14395 Jul 7 19:46 07071246.12c*
-r-xr-xr-x 1 root sys 2802560 Jul 7 23:39 07071246.dat*
-r-xr-xr-x 1 root sys 423 Jul 7 23:39 07071246.hdr*
-r-xr-xr-x 1 root sys 80880 Jul 7 23:39 07071246.sm*
it looks like it kept writing data files till about 23:39
yesterday..but maybe that is UTC time??...I'm also a little curious
why the file name is 07071246.*....that would be yesterday at 12:46?
Does this mean the data-stystem restarted at that time yesterday (this
would explain the clipping I saw in cockpit)?
I put these data on the web at:
http://urquell.colorado.edu/bowling/data_laser/
If you have any other questions or something else I can check on just
let me know...I'll put the information from the data sheet in the
logbook later today.
SpB.
- 71: bowling, Site laser, Tue 08-Jul-2003 14:26:28 MDT, Laser Data Table (Add updates here!)
This is a table to document the status of the laser. The information
in this table is also recorded on data sheets available from Dave Bowling.
TGA Percent Transmittance
Time Graph1 Graph2 LaserT RefDetT SmpDetT Pressure Analog Chan1 Ref A Ref B DC Current DC "A" Ramp B RampB "A"
Date Initials Watch TGA 12C [300 600] 13C [3 6] arr. lve arr. lve arr. lve arr. lve arr. lve arr. lve arr. lve arr. lve arr/lve arr. lve arr/lve
---- -------- ----- ----- --- --- --- --- ---- ---- ---- ---- ---- --- ----- ---- ----- ----- ---- ---- ---- ---- ----- ----- --- --- ------ ------ --- ---
9/30 SpB 10:29 10:33 ok ok ok ok 82.5 - -10 - -20 - 16.3 -- 2.030 -- 55.6 -- 60.1 -- 497.3 -- Y - 10.618 -- Y -
9/26 SpB ----....didn't shutdown the system...see notes below----
9/23 SpB ----....didn't shutdown the system...see notes below----
9/19 SpB 10:48 10:50 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 16.2 17.3 2.037 2.029 55.5 54.2 59.8 58.9 497.5 497.6 Y Y 10.635 10.633 Y Y
9/15 SpB 14:05 14:06 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 17.6 17.15 2.029 2.029 54.3 54.6 58.9 59.2 497.5 497.6 Y Y 10.659 10.648 Y Y
9/9 SpB 10:39 10:39 ok ok ok ok -- 82.5 -- -10 --- -20 ---- 17.21 ----- 2.031 ---- 55.2 ---- 59.5 ----- 498.0 N Y ------ 10.660 N Y
9/2 SpB 10:27 10:31 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 16.4 17.10 2.030 2.030 53.6 54.6 58.2 59.2 497.6 497.9 Y Y 10.684 10.672 Y Y
8/29 SpB ----....didn't shutdown the system...see notes below----
8/25 SpB 11:27 11:28 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 16.2 16.10 2.029 2.029 55.4 53.5 59.9 58.0 497.8 497.97 Y Y 10.693 10.690 Y Y
8/20 SpB 12:07:22 12:14:00 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 17.1 17.75 2.028 2.028 54.3 53.4 59.0 58.2 497.7 497.92 Y Y 10.728 10.727 Y Y
8/15 SpB 11:20 11:26 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 16.3 17.30 2.028 2.028 54.2 54.0 58.7 58.6 497.9 498.03 Y Y 10.75 10.72 Y Y
8/13 AT 10:49 10:54 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 16.67 16.78 2.028 2.027 54.5 54.5 59.1 58.9 497.8 498.04 Y Y 10.754 10.734 Y Y
8/6 AT 10:38 10:41 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 17.20 17.41 2.029 2.028 53.6 53.5 58.3 58.0 498.0 498.23 Y Y 10.750 10.768 Y Y
7/30 SpB 08:56 08:58 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 13.60 15.44 2.030 2.029 57.4 55.9 61.3 60.1 498.0 498.30 Y Y 10.803 10.783 Y Y
7/25 SpB 10:51 10:51 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 16.87 17.58 2.027 2.027 52.0 53.0 56.8 57.7 498.1 498.41 Y Y 10.809 10.803 Y Y
7/21 SpB 11:15 11:16 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 17.17 17.46 2.028 2.028 53.2 53.0 57.8 57.6 498.2 498.39 Y Y 10.832 10.824 Y Y
7/18 SpB 11:55 11:55 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 17.38 17.25 2.027 2.027 100. 53.2 100. 57.9 1.0 498.64 N Y 1.000 10.827 N Y
7/17 SpB ----all was ok....didn't shutdown the system...see notes below----
7/16 SpB 10:29 10:29 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 17.3 17.6 2.026 2.040 100. 53.4 100. 57.1 1.0 498.73 Y Y 1.000 10.827 Y Y
7/14 BB 10:30 10:30 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 17.4 17.6 2.026 2.026 53.0 52.7 57.7 57.5 498.2 498.35 Y Y 10.830 10.842 Y Y
7/10 SpB 9:49 9:51 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 17.06 17.25 2.026 2.026 100. 51.4 100. 57.7 1.0 498.69 N Y 1.000 10.862 N Y
7/8 SpB 9:26 9:27 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 16.05 17.3 2.027 2.026 100. 51.4 100. 56.0 1.0 498.67 N Y 1.000 10.862 N Y
7/6 DB 10:40 10:40 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 16.5 16.8 2.026 2.026 53.9 53.8 58.5 58.2 498.3 498.5 Y Y 10.862 10.865 Y Y
7/5 SpB 14:08 14:08 ok ok ok ok 82.5 82.5 -10 -10 -20 -20 18.19 17.4 2.025 2.025 51.9 52.1 56.9 56.9 498.4 498.5 Y Y 10.861 10.856 Y Y
Tank Pressures (psi)
Date JD cal1(J4) cal2(S10) cal3(J1) cal4(J3) Reference Purge Nafion drier1 Nafion drier2
---- --- --------- --------- -------- -------- ------------ ------------- ------------- -------------
9/30 273 1600 1950 1400 1300 650, 10 350, 10 1.2 -> 1.5 0.57 -> 0.7
9/26
9/23 266 1800 2050 1450 1400 800, 10 400, 10 1.5 0.65 -> 0.7
9/19 262 1800 270 1450 1400 800, 10 410, 13->10 1.3 -> 1.5 0.6 -> 0.7
9/15 258 1950 400 1500 1500 900, 8->10 480, 13->10 -- --
9/9 252 410 500 1510 1500 1000, 10 510, 10 1.1 -> 1.5 0.55 -> 0.7
9/2 245 620 700 1600 1520 1100, 10 700, 10 1.3 -> 1.5 0.65 -> 0.7
8/29 241 750,5psi 800,5psi 1700,1-2 1600,1-2 1200, 10 700, 0->10 1.4 -> 1.5 0.6 -> 0.7
8/25 237 900 1000 1700 1610 1200, 10 720, 10 1.3 -> 1.5** 0.5 -> 0.7**
8/20 232 1000 1100 1800 1710 1350, 10 700, 10 1.3 -> 1.5 0.6 -> 0.7
8/15 227 1100 1200 1800 1750 1400, 10 710, 10 1.1 -> 1.5 0.6 -> 0.7
8/13 225 1200 1300 1800 1800 1410, 10 720, 10 1.2 0.6
8/6 218 1400 1450 1850 1800 1500, 10 800, 10 1.4 0.7
7/30 211 1500 1550 1820 1800 1600, 10 800, 10 1.2 -> 1.5 0.5 -> 0.7
7/25 206 1780 1800 1990 1920 1750, 10 860, 10 1.4 -> 1.5 0.6 -> 0.7
7/21 202 1750 1820 2000 1990 1800, 8->10 900, 10 1.5 0.65-> 0.7
7/18 199 1800 1900 2000 2000 1800, 11->10 900, 11->10 1.4 -> 1.5 0.6 -> 0.7
7/17 198 xxxx
7/16 197 1900 2000 2000 2000 1900, 10 930, 10 1.5 0.7
7/14 195 1900 2000 2000 2000 1900, 10 930, 10 1.5 0.7
7/10 191 1900 2000 2000 2000 1900, 10 900, 10 1.5 0.7
7/8 189 1900 2050 2000 2000 1950, 7 ->10 980, 11 -> 10 1.4 -> 1.5 0.6 -> 0.7
7/6 187 1990 2100 2060 2000 2000, 10 990, 12 -> 10 1.5 0.6 -> 0.7
7/5 186 2100 2200 2180 2100 2100, 12->10 1030, 10 1.7 -> 1.5 0.8 -> 0.7
cal1= 349.4 (J4), or 349.6 (J8).
*cal2= 472.2 (S10, prior to 9/19), or 467.6 (S6).
Site Samples (ppm)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Date air air air air 349.4 472.2 air air 375.5 416.6 349.4 472.2 air air air air 349.4 472.2
21.5m 14m 11m 9m cal1 cal2 7m 5m cal3 cal4 cal1 cal2 2m 1m 0.5m 0.1m cal1 cal2
---- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
9/30 368.7 373.6 367.9 368.5 349.4 466.9 367.7 366.8 377.0 417.2 350.4 468.1 368.2 369.4 370.6 371.8 349.8 467.4
9/26 --- things looked ok ---
9/23 365.3 365.8 364.4 364.6 347.1 464.1 364.7 365.6 373.1 413.9 347.2 464.2 368.1 371.1 368.7 373.1 347.2 464.1
9/19 362.5 363.0 362.0 361.7 -- -- 361.2 361.1 372.3 412.9 346.4 468.3 365.7 364.8 363.8 364.4 346.3 468.2
9/15 17.2 17.2 17.2 17.2 17.3 17.7 17.3 17.2 17.4 17.5 17.3 17.6 17.3 17.3 17.3 17.3 17.6
(approximate pressures)
9/15 371.7 384.7 370.6 370.8 356.2 474.1 370.3 370.1 379.3 420.2 355.3 474.3 393.0 371.1 373.3 377.5 353.7 473.5
9/9 346.5 467.9
9/2 346.2 467.3 371.7 412.3 346.2 468.0 345.9 467.7
8/25 345.9 467.6 371.8 412.2 346.0 467.5 345.8 467.5
8/20 345.7 467.3 371.6 412.3 345.7 467.3 345.8 467.3
8/15 350.5 470.6 375.6 416.7 349.8 471.3 348.9 470.3
8/13 346.8 467.3 371.9 412.8 346.4 468.2 346.2 467.9
8/6 346.1 466.8 371.7 412.2 346.1 467.7 345.8 467.4
7/30 365.4 364.8 363.5 364.5 346.5 468.3 364.1 370.1 371.7 412.5 346.7 468.7 346.6 468.6
7/25 367.9 367.2 365.8 366.2 346.7 467.7 366.6 366.6 372.2 413.0 346.8 468.7 368.5 369.1 371.1 370.1 346.6 468.5
7/21 367.8 367.6 368.9 367.5 346.7 466.6 366.3 366.9 372.3 413.3 346.9 468.6 374.0 379.7 384.6 389.1 346.2 467.8
7/19 (at 13:00) 348.0 470.2 348.0 470.2
7/18 374.5 372.7 372.3 370.5 351.4 470.0 369.7 371.4 374.1 414.0 349.7 471.2 375.1 372.4 375.4 374.3 348.7 471.2
7/17 (at 11:00) 345.8 467.5 371.8 412.4 345.8 467.4 345.7 467.3
7/16 (at 14:00, 3 hours later) 346.0 467.4 371.9 412.5 346.1 467.5 467.3
7/16 366.5 366.9 366.3 366.6 343.4 463.1 366.4 366.8 368.9 409.2 343.9 464.5 367.6 369.9 369.2 371.7 347.7 464.2
7/14 371.0 370.4 369.6 369.8 349.1 471.4 370.3 371.0 375.2 416.1 349.0 471.6 371.4 372.6 373.3 376.0 348.6 471.2
7/10 369.4 368.6 368.5 368.2 350.6 473.0 369.7 369.2 377.2 418.2 350.7 473.8 369.2 370.2 371.5 374.6 350.2 473.6
7/8 373.7 373.5 372.7 373.5 349.2 470.2 374.3 375.1 375.1 415.8 349.7 472.6 377.8 374.6 377.1 376.6 349.7 472.6
7/6 369.9 370.3 369.6 368.4 348.5 470.9 368.2 369.7 375.0 415.9 348.8 471.3 370.1 371.2 373.9 374.2 348.7 471.2
7/5 369.5 369.2 369.2 369.0 348.3 469.8 369.6 370.0 374.5 414.9 347.9 470.2 370.0 370.7 375.4 374.1 347.7 469.9
Liquid N2 Level
Date (cm) Topped Off? Laser Heater Data Start Time
9/30 6 Y 3.45 11:29
9/26 11 Y (not quite topped off)
9/23 8.5 Y
9/19 11.5 Y 3.48 13:31, 13:49
9/15 11.0 Y 3.48 15:31
9/9 8.0 Y ---- 10:55(1), 11:00(2)
9/2 8.0 Y 3.46 10:50(1), 10:53(2)
8/29 11.0 Y
8/25 13.0 Y 3.45 11:40
8/20 14.0 Y 3.46 12:33(1), 12:36(2)
8/15 14.0 Y 3.45 12:31
8/13 ? Y 3.46 11:29, crash, 11:32
8/6 ? Y 3.46 10:07
7/30 12.0 Y 3.47 10:01, crash, crash, 10:23
7/25 12.0 Y 3.47 11:17
7/21 8.5 Y 3.48 12:04
7/18 14.0 Y 3.91 14:20
7/17 didn't fill laser dewar --- will do this tomorrow.
7/16 13.5 Y 3.9 11:29
7/14 10 Y 3.5 11:12
7/10 14 Y 3.93 10:15
7/8 14.5 Y (full~20cm) 3.95 10:13
7/6 15.5 Y 3.51 10:51 (and 11:01)
7/5 11 Y 3.53 14:52
Comments:
---------
9/30: Turned off the pump and moved the 2nd 21.5m line back down to 14m (where it was originally).
The data system shutdown shortly after we left the tent/tower. Didn't finish filling out the
form before leaving the tent.
9/26: 12:00 MST, filled LN2. Note: there is no more LN2 at MRS. Need to bring up 10-l dewars
from CU.
9/23: No data download. Only checked pressures and ppm values. cal1 seemed to have a slightly
higher pressure then the other lines, but didn't change anything (it was 17.4 (cal1)
vs 17.3 (others)). At 9:28 MST filled LN2.
9/19: Replaced cal tank2---Sirfer 10 with the backup, S6. Adjusted tank pressures. They seemed to not
need much adjustment. The 1st time checked the values the valve for cal2 was not open. Re-opened
this valve and restarted the data at 13:49.
9/17: 9:39 MST--shutdown laser system. Changed filters at all levels on the main tower (upper 6 levels).
Changed inlet orifice at 2m (10:50 MST). 10:59 MST---restarted laser data collection. Also topped
off LN2 (not all the way since i'll be back up on Friday). Didn't download any data, but did stop
the data system and shutdown the pump. Also, adjusted purge flow from 8->10 and Nafion Dryer2 from
0.8-> 0.7.
9/15 : At 13:22 MST shutdown the pump to change the inlet filters. Only changed the lowest 4 inlets
(ie, the ones on the mini-tower). Moved the 14m inlet up to be co-located with the 21.5m
inlet (at about 14:00 MST). (Note: forgot to check the nafion driers)
9/9 : When I arrived the PC was off---restarted the PC and recorded a short data file (~30 min) before
shutting the system down and burning a CD. There were power problems last night which was probably
the reason the PC was off. Note: the fan did not sound very good when booting the PC. . .though
it does seem to be blowing air ok. Also note, the "OffsetGn" box was not activated---i had to
manually start this. The fan sounded better after running a little while, but still whines every
now and then.
9/2 : Had to restart data system one time. It looks to me like the gas out of cal1 and cal2 are being
used faster than previously.
8/29: At about 13:00 MDT noticed that the flow of the UHP air was at zero cc/min. Adjusted it back
to 10 cc/min. Also, adjusted the Nafion driers and checked the ref gas (it was ok at 10 cc/min).
And topped off Liquid N2. Readjusted the tarp over the cylinders. Didn't download any data.
8/27: at around 1pm the tarp was wrapped around the cylinders.
8/25: Topped off Liquid N2 BEFORE filling in the data sheet. It's raining. Also, note: Nafion dryer
adjustment was not made until about 14:30 MDT (forgot to check it when filling out the form).
8/20: Reset the PC time to be near GPS time (the PC clock had drifted so it was off by about 7 minutes...see
above table for exact time difference). Crashed one time on rebooting. Around 13:50 is when i actually
filled out the co2 concentrations since i went off and did the east robot right after re-starting the system).
8/15: Changed the pump oil. Changed the inlet filters. Note that the cal gases measurements are closer to
the actual cal gas values (not sure why?).
8/13: Last weeks CD was corrupted. Made 2 CDs today. (1) Data from Aug 6-13; (2) Data from July 31-Aug13
(some redundant files!). Nafion flows are a bit low (not adjusted to normal level). Crashed at
beginning of restart -- had to restart.
8/6: Laser had a good week. No thunderstorms.
7/30: There was a crash right after starting (while recording values from site3).
Went to the blue screen and had to restart tga. After this the Tgaparam.tgs file
was corrupted (there was no "Ramp B offset" in the parameter list) and had
to be recopied from an old version of the file. The tga then crashed again.
The third time is ran ok. After the 2nd crash the error message was:
Runtime error 205. at 0210:000C
Also, the flow in the Nafian driers was lower than normal.
7/25: There was a crash right after starting (while recording values from site3).
Went to the blue screen and had to restart tga. happened at about 11:20.
After that it started up ok.
7/21: No crash with the new software. Shutdown the system to download data. Also,
installed the new UPS. The cal gas values seem a bit low so I checked
the alignment (see e-mail from Steve about how to do this---it's in the binder at
the tent). Here are the results:
DC Current
optimal (498.17) increased (499.17)
---------------- ------------------
ref det sig. 2.4 (dropping) 6.16 (fairly steady)
smp det sig. 27.6 (changing) 46.88 (fairly steady).
smp gain=0A (ok) ref gain=0A (ok).
7/18: Laser crashed Thursday afternoon. Installed new TGA software
from Steve. Had a few problems reading from the floppy drive.
Needed to move the files to a different floppy disk with the gateway laptop
and then it worked ok. Everything else seemed to work fine. The new
software closes the valves when tga is moved into run mode.
7/17: laser was running fine so I just let it go. I did record the cal gas numnbers to
see if they were closer than what we saw yesterday. It was almost exactly the same
as yesterday (reading about 4ppm lower than the cylinder values).
7/16: Crashed sometime during the night. Russ and I wrapped the sample cell with foam. The
cal values were quite a bit off when the system first came up (order of 6ppm). This
difference had decreased to about 4 ppm 3 hrs later. Also, I connected a wire from
the grounding rod to the PC chassis...here are the voltages I measured:
1) DC Voltage: 0.3-0.4 mV
2) AC Voltage: 1.8 mV
3) Resistance: 2.1 ohms.
7/14: Brant (BB) stopped the data, burned the CD and filled out the sheet. Was running fine
when we arrived and was running fine when we left. Replaced the 37-pin transputer cable
which Steve FedEX'ed to me.
7/10: Sometime during the night the laser stopped working...this is the "lost linelock" error.
Restarted fine.
7/8: Yesterday (7/7) afternoon at about 16:39 MDT the data system lost linelock and output became zero mV.
When arrived at the PC the message was, "lost linelock"; settings: DC Current=1, RampB Offset=1.
Appeared to restart ok.
7/6: Error when restarting....Restarted at 10:56, restarted automatically, sampling level 8 at this time.
DC Current and "Ramp B" Offset equals 1, manually linelock and manually restared data collection.
7/5: Sample Cell pressure slightly lower when restarted---probably due to change in the Nafion Drier flow rate.
- 68: bowling, Site laser, Mon 07-Jul-2003 15:20:01 MDT, Procedure for Downloading/Checking the Laser (TGA).
This is the ASCII version of a word file written by Dave Bowling.
For the original MS Word file go to:
http://urquell.colorado.edu/bowling/docs/
The file is:
41472 Jul 7 11:02 Tga_procedure_ver2.doc
In addition the spreadsheet for the data collection is
there...this file is:
19456 Jul 7 11:02 niwot_field_form.xls
-------------------------------
Tga_procedure_ver2.doc
7/7/03
Niwot TDL Site Management and Data Collection
Be sure to go to the site with liquid nitrogen every time you visit.
Serious problems will result if the laser heats up. (But wait until
the appropriate step below to refill the LN2 dewar.)
Items in bold should be recorded on a unique field form for each collection date.
Record parameters upon arrival at the site:
1) If the keyboard lock is on ("Run" selected on Parameter menu), use
the down arrow key and select "Run/Edit" so you can use the keyboard.
2) Note the date, your name, time (your watch), and TGA time on the
field form.
3) Note if graph 1 is set to 12C (Y/N), and that the graph limits are
300 to 600 (Y/N). Verify that graph 2 is set to 13C (Y/N), and that
the graph limits are 3 to 6 (Y/N). These should always be true, if
not there is a problem in data collection and we need to know it.
4) Verify that Linelock, DataColl, Gradient, Laser on, SiteMean,
OffsetGn, and DualRamp are all correct (all should be on except
Gradient). Check the boxes on the field form (initial values column)
to indicate this.
5) Record the laser temperature, reference detector temperature, and
sample detector temperature.
6) Record the long cell pressure (use graph 3, set up the graph if
necessary - graph 3 does not alter data collection).
7) Change Graph 3 to TGA Ana Chan 1 and record the voltage to 3
decimal places (eg, 2.026; this is a measurement of long cell
temperature). If the Ana Chan is not 1 (if it's 2 or 3) then you need
to select that channel using the Parameter menu. The yellow nominal
"nom" selection under that menu should be 1.
8) Record the transmittance in the reference detector for ramps A and
B (Ref A % trans and Ref B % trans). These should be visible in the
detector graph section, set up the graph if necessary.
9) Record the DC current, and note if there is an "A" following it
(Y/N) indicating that the automatic line lock is on for 12C.
10) Record the Ramp B Offset, and note if there is an "A" following it
(Y/N) indicating that the automatic line lock is on for 13C.
11) Type "S" to toggle site means mode (mean data collection ) off.
12) Type "D" to toggle 10 Hz data collection off. You'll be asked to
hit a key to save data, or given an option to erase the data files and
you definitely don't want to do that.
13) Now that data collection has ceased, there is one more parameter
that needs to be recorded. Change graph 1 to Laser heater and record
the voltage.
14) Hit Esc to return to blue menu.
15) Hit X to exit to DOS.
16) At the C:\tga> prompt type "exit" to return to Windows.
-------------------------------------
Burn data to a CD:
1) Open SimpliCDROM using icon.
2) Insert a blank CD.
3) Open Windows Explorer using icon.
4) Go to C:\tgadata.
5) Select all files and drag them to the CDROM window.
6) Go to C:\tgaparm.
7) Select all files except Tgaparm.tgs and drag them to the CDROM
window.
8) Go to CDROM window and click "Burn Disc" button. No need to label
the volume.
9) Wait until CD is finished burning before proceeding to next step,
otherwise the CD won't burn properly. While you're waiting, measure
the depth of the liquid nitrogen in the dewar and record the LN2 depth
on the field form. Use a cable tie as a dipstick and blow on the cold
cable tie once you pull it out of the dewar (this makes it really
visible). There is no box for this measurement on the original
printed field form (version 2 now has it), so just write the depth in
the comments section if you have the version 1 form (upper right
corner of the form indicates the version). If you don't have a tape
measure, indicate the depth on the left side of the field form with a
line so it can be measured later. After measuring, top off the LN2
and indicate that you did this by checking the LN2 filled? box on the
field form.
10) Using Explorer, move all files EXCEPT Tgaparm.tgs to the
subdirectory C:\tgaparm\oldparmdata. This should leave only
Tgaparm.tgs and the oldparmdata folder in the directory.
11) Return to C:\tgadata and move all files to C:\tgadata\oldtgadata.
This should leave an empty directory with the exception of the
oldtgadata folder.
12) Check disk space at bottom of Explorer and consider deleting files
(oldest first) if it becomes necessary (unlikely). It's best to keep
them on the hard disk as long as we can for an extra copy.
13) Close Windows Explorer window.
14) Close CDROM software, don't save the layout.
15) Label the CD with a Sharpie with "Niwot" and the date. If this is
the second collection of the day, indicate so on both the CD and on
the field form so it's clear.
-------------------------------------
Start up the TGA run again:
1) Open MSDOS window using icon.
2) At C:\tga> prompt type "tga" to get the blue menu.
3) Select R for real time screen. TGA parameters will change and adjust.
4) At this point, all the relays are on and cal gas is being wasted as
a result. Press "S" twice to toggle site means mode on and off which
turns off the relays.
5) Watch laser, reference detector, and sample detector temperatures
for stability.
6) While you wait for stability, check tank pressures and flow rates
for relevant tanks and the Nafion driers and record them on the field
form. Adjust if necessary and make a note on the field form if you
did this.
7) Once temperatures are stable (usually several minutes), make sure
Ref A and Ref B are displayed in detector graph window. Set up the
graph if necessary
8) Verify absorption lines are in the detector graph window, then
press "I" to line lock for 12C. If you can't find the absorption
lines, then you need to look for them. Check the manual. Note that
to search for the lines you need to manually turn on one of the inlet
lines using the switches on the relay board to provide some gas to the
long absorption cell.
9) Press "Alt-I" to line lock for 13C.
10) Verify that all relay switches are in the "auto" position.
11) Set graph 1 to 10 Hz Conc A.
12) Set graph 2 to 10 Hz Conc B. These steps are critical as the data
that is plotted in graphs 1 and 2 is the data that is saved. If you
select some other parameter to be graphed here you will ruin data
collection so make sure! Note that graph 3 does not affect data
collection and can be adjusted and modified as necessary while
running.
13) Set graph limits on graph 1 to 300 and 600.
14) Set graph limits on graph 2 to 3 and 6. These steps set the D/A
output ranges that are read by the 21X datalogger and saved to the CU
data system.
15) Press "D" to start 10 Hz data collection.
16) Press "S" to start site means mode.
17) Immediately check the time and record it on the field form as the
data start time (TGA time, not your watch, hh:mm). This is used to
name data files.
18) On a 6-minute interval boundary (top of the hour, 6 mins after the
hour, etc) the profiler will begin cycling through the 18 sites. You
may need to wait up to 6 minutes before the data in the next step
appears on the screen.
19) As the TGA cycles through the 18 sites, write down the [12CO2]
concentration that appears on the screen for each site (labeled
MeanConc in the 3-row table near upper left). Only 3 sites are
visible at a time and if you miss one then you have to wait until it
comes around again (a cycle takes 6 minutes). Check to make sure the
air values are reasonable and that the cals are within 5 (10?) ppm of
the correct value (at right of the cells on the field form). If the
cals are farther off than 5-10 ppm from correct there may be no flow
from the tanks and this needs to be fixed by adjusting delivery
pressure on the tanks. This is not as easy as it sounds - call Dave
or Steve.
20) Record these things again and verify that they are similar to the
values that you saw earlier: laser temperature, reference detector
temperature, sample detector temperature, pressure, TGA Ana Chan1, Ref
A % trans, Ref B % trans, DC Current, DC Current "A", Ramp B Offset,
Ramp B Offset "A". Don't check the laser heater again as this will
cause data collection problems. This step can be combined with the
above step if you're paying attention since the above step involves
some waiting.
21) Verify that Linelock, DataColl, Gradient, Laser on, SiteMean,
OffsetGn, and DualRamp are all correct (all should be on except
Gradient). Check the boxes on the field form (after restart column) to
indicate this.
22) Put in "Run" mode instead of "Run/Edit" mode to lock the keyboard
(left end of menu).
23) Shut the tent window in case it rains.
If the system crashes after you restart: It will try to restart
everything automatically, and if you had data collection on ("S" and
"D") it will turn them back on. HOWEVER - sometimes when there is a
crash, the software sets DC current and Ramp B Offset to 1 mA, in
which case the software will never be able to find the absorption
lines. If you see a crash, immediately check these parameters and set
them to the appropriate values if they are set to 1 (use the latest
values on the field form if you have them, otherwise try DC Current =
498.5, Ramp B Offset = 10.865). You will usually need to manually
LineLock ("I" and "Alt-I") after things stabilize, or in some
instances you may need to search for the lines manually by adjusting
DC current (see the manual). You may also have to restart data
collection ("S" and "D", record the time again). This seems to occur
within 4-6 minutes of restarting, but does not repeat. Keep an eye
out for this problem before leaving the site.
The values that are written down in the "after restart" columns and
for [12CO2] at the 18 sites should reflect the system condition when
you leave the site, once things are working properly. Please watch a
while longer and either write down the second round new values or at
least verify that they did not change as the system runs a complete
6-minute cycle. Please take detailed notes on any crash that you see
(in comments section on the field form), and let us know as soon as
possible so we can diagnose the problem.
Contact info - call anytime
Dave Bowling, Dept of Biology, Univ. of Utah
801-581-2130 work
801-832-9765 home
Steve Sargent, Campbell Scientific
435-750-1705