Instrument Log

60 MT T/H "B" (West) Side      C1 Lamont, OK

Date

Operator

Comments

11/16/2015

MS

Carriage was lowered for work on 60m CO2 flux.  Data for this instrument may be affected around 1815 GMT to 1830 GMT.

10/26/15

CAM

D. Cook

Instrument mentor on site for annual 25 and 60M T/H calibration change outs.  Lowered the West booms at 1454 GMT for maintenance.   R/R 60M *T/H sensor.   Raised booms and RTS at 2012 GMT. 

*Old – S2920010   *New – S2920008

7/20/15

PAD/JEM

West side booms were lowered to remove 25 and 60M IRGA and R/R 25 and 60M Sonic Anemometers.  Booms were lowered at 1405 GMT, raised at 2050 GMT.  No issues known with this instrument.

4/16/15

JEM

Notified by Mentor the 25M and 60M IRGA will be removed from service and the 25M and 60M Sonic Anemometer will be left in service.  Mentor requests pin out of cables and power/comms box as there is no known wiring diagram available.  Lowered side B of tower at 1849 GMT.  Developed wiring diagram and took pictures of power/comms box.  Raised tower at 1959 GMT.

4/2/15

PD

60M CO2 Flux program was stopped on 4/1/15 so computer could be relocated to temporary EF enclosure at the base of the 60M tower.  It failed to restart correctly.  Powercycled side B, 60M instruments at 1445 GMT.  RTS at 1500 GMT.  No issues known with this instrument.

3/13/15

JEM

Side B of tower was dropped to remove IRGAs for calibration on 3/12/15.  IRGAs need to be installed.  Lowered tower at 2003 GMT, installed IRGAs and raised tower.  RTS at 2123 GMT.

3/12/15

JEM

Side B of tower was dropped to remove IRGAs for calibration.  Lowered tower at 1752 GMT, removed IRGAs and raised tower.  RTS at 1842 GMT.

1/27/15

JEM

The boom was lowered for MFR25M maintenance.  Data will be effected from 2105 GMT to 2120 GMT.

10/28/14

CAM

D. Cook

Instrument mentor on site for annual 25 and 60M T/H calibration change outs.  Lowered the West booms at 1506 GMT for maintenance.   R/R 60M *T/H sensor.   60M aspirator fan was not working.  Repaired broken connections and restored fan power.  Performed ice bath calibrations on PRTD sensor.  Raised booms and RTS at 2230 GMT. 

*Old – S2920009   *New – S2920010

6/23/14

CAM

No data had been collected from 60 T/H since 1205 GMT on 6/21.  Found the UPS that powers the comms equipment in the AOS trailer was down.  Power cycled UPS and restored power at 1220 GMT.  Normal data collections resumed at next interval. 

5/27/14

CAM

No data had been collected from instrument since 1209 GMT on 5/25.  Found the UPS that powers the comms equipment in the AOS trailer was down.  Breaker for UPS supply line was tripped.  Reset breaker at 1325 GMT.  UPS powered up and comms equipment power restored.  Normal data collections resumed at next interval. 

11/14/13

JEM

West tower booms were lowered to work on the 25M CO2FLUX system.  Any 60M T/H data between 1600 GMT and 2300 GMT should be ignored.  RTS @2300 GMT.

6/17/13

JEM

The West booms need to be lowered to reinstall the 25M and 60M IRGA.  60M T/H data is affected between 1947 GMT and 2135 GMT.  RTS @2135 GMT.

6/13/13

JEM

West booms were lowered from 1455 GMT to 1630 GMT so the 25M and 60M IRGA’s could be calibrated.  60M T/H data is affected during this time.  RTS @1630 GMT.

4/24/13

Twr Sys

Tower Systems on site for tower maintenance.  Unsnagged SW winch cable from foot pegs and straightened bent sections of boom guide rails.  Adjusted boom vertically on winch cable for proper alignment with top connectors.  Winch cable will need to be remarked next time the booms are completely lowered.

2/27/13

CAM

Cycled AC power to west 60M level at 1942 GMT to reset network camera.  No problem with T/H instrument.

2/26/13

CAM

The site lost power at approximately 0350 GMT on 2/26 due to a severe winter storm.  Power was restored at 1920 GMT.  Instrument RTS status O.K and data collections resumed once SDS operations were restored.

12/24/12

PAD

Troubleshooting issue with 60M anemometer located on side B of tower.  Side B, 60M level was powercycled several times during troubleshooting process.  No issues with 60M T/H side B known at this time.  RTS at 1836 GMT.

11/20/12

CAM

Local electrical service was shut off at 1410 GMT so that Kay Electric could upgrade its power lines from 7.2 KV to 14.4 KV in Grant County.  Power was restored at 2115 GMT after electrical upgrades were complete. 

11/13/12

CAM

Site power was partially shut down at 1400 GMT in order to replace the 7 transformers that service the buildings and all instruments south of the main compound.  Power was restored at approximately 1930 GMT after all transformers were replaced.  Tower instruments resumed normal operation.

10/11/12

JEM

The tower needs to be lowered to reinstall the 25M and 60M IRGA's.  Lowered the booms @1753 GMT.  The booms were raised and RTS @1915 GMT.

10/10/12

CAM

D. Cook

The west 60M temperature sensor has been reading erratically since the calibration was done yesterday.  Lowered west booms at 1905 GMT.  T/S found one of the sensor wires was pinched against the ventilator housing and intermittently shorting out.  Repaired wire and tested ok.  Raised boms and RTS at 2045 GMT.

10/912

CAM

D. Cook

Instrument mentor on site for annual 25 and 60M T/H calibration changeouts.  Lowered the West booms at 1845 GMT for maintenance.   R/R 60M *T/H sensor.   Raised booms and RTS at 2210 GMT. 

*Old – S2920010   *New – S2920009

3/8/12

PAD

Radon Gas Analyzer inlet pipe has separated approximately 40M above the ground.  Contractor is on site today to climb tower and repair inlet tube.  Power to tower needs to be shut down before contractor can climb.  Shut down power at base of tower to 25 and 60M levels, side A at 2023 GMT.  After repairs were made and complete inspection of inlet pipe was performed, power was restored.  No issues with this instrument are known at this time.  RTS at 2257 GMT.

2/14/12

PAD/CAM

60M IRGA was calibrated and needs to be installed on tower.  Lowered side B of tower at 2023 GMT.  Raised tower at 2105 GMT.  No issues known with instrument at this time.

2/7/12

PAD

60M IRGA needs to be calibrated.  Lowered side B booms at 1414 GMT.  Removed IRGA and raised tower at 1500 GMT.  No issues known with this instrument.

11/1/11

CAM

D. Cook

Instrument mentor on site for annual 25 and 60M T/H calibration changeouts.  Lowered the West booms at 1758 GMT for maintenance.   R/R 60M *T/H sensor.  Performed ice bath calibrations on PRTD sensor. Raised booms and RTS at 2142 GMT. 

*Old - S2920009  *New – S2920010

4/26/11

PAD

Calibrated 25 and 60M IRGAs and they need to be installed on tower.  Lowered side B of tower at 1721 GMT.  Raised at 1800 GMT.  No problems known with instrument at this time.

4/26/11

PAD

Mentor requests 60m IRGA calibrated.  Lowered west boom of tower at 1354 GMT.  Raised tower at 1434 GMT.  No problems known with instrument at this time.

4/15/11

JEM

The instrument has not collected since the 0400 hour.  Due to other instruments that are down the source of the problems seems to be the Rocketport hub.  The Rocketport power light is flashing.  Power cycling the Rocketport hub did not correct the issue.  Notified the IT department of the issue.

10/19/10

CAM

Tower Systems on site for tower inspections.  Need to secure power for maintenance.  Secured AC power to 25m and 60m levels at 1407 GMT.  Restored power following inspection at 1620 GMT.

10/18/10

CAM

D. Cook

Instrument mentor on site for annual 25 and 60M T/H calibration changeouts.   Lowered the West booms at 1423 GMT for maintenance.   R/R 60M *T/H sensor.   Performed ice bath calibrations on PRTD sensor. Raised booms and RTS at 2026 GMT. 

*Old - S4520015  *New – S2920009

6/11/10

PAD

60M tower cameras are not working.  Computer department requests both sides of tower power cycled at the 60M level to reset cameras.  Power cycled Side A and Side B at 60M level at 1738.  No problem with this instrument known at this time.  RTS at 1753 GMT.

11/19/09

CAM

SDS instrument status page indicated no data had been collected since 2109 GMT on 11/18.  T/S found the UPS in the AOS trailer which powers the tower communications equipment had no output.  AC LINE and ALARM LEDs were lit on the UPS.  Power cycled UPS at 1342 GMT and power was restored.  RTS at 1345 GMT. 

9/21/09

D. Cook

CAM

Instrument mentor on site for annual 25 and 60M T/H calibration changeouts.   Lowered the West booms at 1506 GMT for maintenance.   R/R 60M *T/H sensor.   Performed ice bath calibrations on PRTD sensor. Raised booms and RTS at 1750 GMT. 

*Old - S1720004 (HMP35D)   *New – S4520015 (HMP45D)  

7/1/09

PAD

60M IRGA needs calibrated.  Lowered tower at 1424 GMT to removed IRGA.  Tower was raised and 60M T/H RTS at 1604 GMT.  No problems know with instrument at this time.

12/22/08

CAM/PAD

Lowered the booms at 1955 GMT to T/S a short in the 12V DC power at 25M level.  Found a piece of aluminum shaving had fallen into the DC connector on the 25M boom when the 60M boom was drilled to mount a camera on 11/18.  The aluminum shaving was shorting the 12V power pin to ground.  Removed shaving and restored power to 25M datalogger.  Raised booms and RTS at 2029 GMT.  Confirmed good power and sensor readings.  RTS at 2035 GMT.

12/16/08

PAD

Last SDS collection was on 12/11/08 at 2308 GMT.  West side 25M and 60M dataloggers share a common power supply.   Chris Martin and I found low voltage at dataloggers. Suspect short in tower connector at 25M level or possibly T/H sensor.  Cannot lower tower due to ice.  Disconnected 25M datalogger and sensor from power supply to allow 60M instrument to operate.  RTS at 1745 GMT.

12/15/08

PAD

Mentor requested West side tower booms lowered and raised to reseat connections.  This was done on 11/18/08.  SDS has not collected data from 25M and 60M T/H sensors since that date.  T/S found low voltage at 25 and 60M T/H dataloggers.  When 25M sensor is disconnected from datalogger, voltage at dataloggers returns to 13.6V.  Lowered booms and checked ventilator fan and sensor.  No problems found.  Raised tower and verified we could communicate with dataloggers.  RTS at 1630 GMT.

11/18/08

PAD

Facilities department needs to lower West side 25 and 60M booms to install camera on tower.  Tower was raised at 1725 GMT.  No problems with instrument at this time.

11/13/08

PAD

Facilities department needs to lower W side booms to mount tower camera.  Lowered tower at 1450 GMT.  Raised tower at 1537 GMT.  No problems with this instrument known.  RTS at 1540 GMT. 

5/29/08

PAD

60M IRGA needs to be installed after calibration.  Lowered tower at 1926 GMT and installed IRGA.  Raised tower at 2006 GMT.  No problems known with this instrument at this time.  RTS at 2006 GMT.

5/28/08

PAD

Mentor requests 25 and 60m IRGAs located on side B, West side of boom calibrated.  Lowered side B, West side 25m boom at 1529 GMT and removed IRGA.  Raised boom at 1950 GMT.  No problems with this instrument known at this time.

4/21/08

PAD

IRGA SN 75B/H-0435 was returned to the CF from LiCor after repairs.  Mentor request unit placed on 25m level of 60m tower and RTS.  At1820 GMT, Mark Klassen and I lowered west booms, side B, of 60m tower.  Booms were raised and instrument RTS at 1850 GMT.  No problems known with this instrument.

2/28/08

PAD

Mentor request 25M IRGA removed from tower.  Lowered side B booms on tower at 1853 GMT.  Raised tower and instrument RTS at 1923 GMT.  No problems known with this instrument at this time.

11/1/07

PAD

60M boom on West side was power cycled to reset IRGA.  No problems with instrument at this time. 

10/3/07

PAD

60M IRGA was remove for calibration and needs to be RTS.  Lowered West side B of tower to install instrument.  No problems with 60M T/H known at this time.  RTS at 1806 GMT.

10/1/07

PAD

60M IRGA needs calibrated.  Lowered West side B of tower to remove instrument.  No problems with 60M T/H known at this time.  RTS at 1806 GMT.

7/26/07

D. Cook

CAM

Instrument mentor on site for annual 25 and 60M T/H calibration changeouts.   Lowered the West booms at 1354 GMT for maintenance.   R/R 60M *T/H sensor.   Performed ice bath calibrations on PRTD sensor. Raised booms and RTS at 1900 GMT. 

*Old – S2920008 (HMP35D)   *New - S1720004 (HMP35D)

4/5/07

PAD

Side B of tower needs to be lowered to install 60M IRGA.  Tower was lowered at 1537 GMT.  Tower was lowered again while troubleshooting power issue on 25M IRGA.    No problems with instrument at this time.  RTS at 1930 GMT.

4/2/07

PAD

West booms, side B, needs to be lowered to remove 60m IRGA.  Let down side B booms at 1428 GMT.  Boom were raised and RTS at 1503 GMT.  No problems with instrument at this time. 

10/11/06

D. Cook

CAM

Instrument mentor on site for annual 25 and 60M T/H calibration changeouts.   Lowered the West booms at 1505 GMT for maintenance.   R/R 60M *T/H sensor.  Performed ice bath calibrations on PRTD sensor. Raised booms and RTS at 2117 GMT.  *Old – S1720004 (HMP35D)    *New – S2920008 (HMP35D) 

10/5/06

PAD

60M IRGA needs to be calibrated.  Lowered side B (West side boom) at 1745 GMT and calibrated 60M IRGA.  No problems with this instrument.  RTS at 2035 GMT.

5/24/06

MK

The tower is being lowered for maintenance on the 25M and 60M  LI-7500 units. Lowered tower at 1328 GMT, raised tower at 1630 GMT.

5/22/06

MK

The tower is being lowered for maintenance on the 25M and 60M  LI-7500 units. Lowered tower at 2001 GMT, raised tower at 2040 GMT.

5/18/06

PAD

60M IRGA on tower is scheduled for calibration.  Lowered 60M side B of tower at 1526 GMT.  Removed 60m IRGA for calibration.  Raised 60M boom at 2102 GMT.  No problems with this instrument at this time.

12/5/05

MK

The OS needs to be upgraded on all CR10X's. Downloaded current data off of data logger, retrieved program from data logger, loaded new OS.  Loaded program back into CR10X datalogger. System is operating normal. S/N 23757. RTS at 2120 GMT.

9/6/05

PAD

Power was shut off to PGS shed to make repairs to conduit between PGS shed and tower.  PGS shed instruments were restarted at 1825 GMT.  Could not get PGS computer to talk to 60m Sonic and IRGA.  Power cycled side B 60m instruments on tower twice between 1840 GMT and 1900 GMT.  No problems with this instrument at this time.  RTS at 1915 GMT.

8/5/05

D. Cook

CAM

Instrument mentor back on site to finish the annual 25 and 60M T/H sensor changeouts and calibration checks.  Lowered west booms at 1329 GMT.    R/R 60M *T/H sensor.  Performed ice bath calibrations on temperature sensor.  Raised booms and RTS at 1647 GMT.   *Old – S2920010 (HMP35D)   *New – S1720004 (HMP35D)

8/4/05

D. Cook

GRS

Instrument mentor on site for annual 25 and 60M T/H calibration changeouts and temperature sensor ice baths.  Tower System  techs also on site for tower inspection.  Turned the 25 and 60M levels power off at 1330 GMT so Tower Systems could service tower. Lowered the west booms at 1330 GMT for inspection.  Made power and data connections for the 25M boom at ground level, but did not bring the 60M boom to ground level.  Had to cut the maintenance short and raise the booms due to lightning in the area.  Raised west booms and RTS at 2001 GMT.

7/29/05

PAD

Instrument mentor request 60M IRGA placed in service.  No problems with instrument at this time.  Shut down 25M Sonic 2 program at 1843 GMT.  Lowered West booms and installed 60M IRGA, SN 0435.   Raised tower and RTS at 2013 GMT.

2/22/05

PAD

Need to power cycle other instruments on tower to reestablish communication with computer.  Power cycled instruments at 60m level on west side of boom at 1752 GMT.  RTS at 1807 GMT.

10/20/04

MR

The 25M elevator needs to be lowered due to maintenance on other equipment.  Lowered the elevator at 1750 GMT.  Raised the elevator at 1930.  RTS at 1935.

10/13/04

MR

Maintenance on other equipment has been completed and the tower needs to be raised.  Raised the tower at 1630 GMT.  RTS at 1630 GMT.

10/12/04

MR

Lowered the tower at 1416 for IRGA maintenance. Removed the 25 Meter and 60 Meter IRGAS for calibration.  Both 25M and 60M IRGA's need to be calibrated and the internal chemicals changed. Will leave the tower down overnight while these instruments are being calibrated.

9/30/04

JEM

Collected data from the datalogger @2000 GMT due to a collection problem with the SDS.  RTS @2010 GMT.

9/27/04

D. Cook

CAM

Instrument mentor on site for annual 25 and 60M T/H calibration changeouts and temperature sensor ice baths.  Lowered west booms at 1432 GMT.    R/R 60M *T/H sensor.  Performed ice bath calibrations on temperature sensor.  Raised booms and RTS at 2105 GMT.   Encountered some difficulty getting the 25m signal connector to mate when raising booms due to the upper connector being tilted slightly.  Mentor recommends not lowering the booms unless absolutely necessary until Tower Systems can come out to inspect/repair the connector.   *Old – S1720002  (HMP35D)   *New – S2920010 (HMP35D)

8/30/04

MR

The instrument mentor wants the SW elevator bumped so the connections are reseated.  Bumped the SW 60M elevator.  RTS at 1830 GMT.

8/5/04

MR

The SW elevator needs to be lowered due to SN# need to be checked.  Lowered the tower at 1450 GMT.  Raised the tower at 1523.  RTS at 1530 GMT.

7/27/04

MR

This is for the SW T/H Probe.  The instrument mentor has noticed some data missing between 6/30/04 @ 16:30 and 7/1/04 @ 15:15 GMT and wants to see if it can be recovered from the storage module. Downloaded all the data from the storage module as per mentor’s instructions.  RTS at 1930 GMT.

6/3/04

PAD

During troubleshooting 4m CO2flux system network problems, needed to power cycle 60M W boom.  Power cycled 60M west boom at 2030 GMT.  There is no failure with this instrument.

4/29/04

MR

Work on other equipment has been completed and the west 60M tower can be raised.  Raised the 60M tower.  RTS at 1341 GMT.

4/26/04

JEM

The CO2 Flux IRGA’s (LI-7500) need to be removed so they will be ready for Mark Fisher to calibrate on 4/27/04.  Closed the program @1527 GMT.  Removed the 4M IRGA @1610 GMT.   Lowered the 25M boom to the ground.  Removed the 25M IRGA @1535 GMT.  Lowered the 60m boom to the ground.  Removed the 60M IRGA @1547 GMT.  Placed components in the GIF trailer for Mark Fisher.  Left booms at ground level pending calibration of the IRGA’s.

2/11/04

MR

The elevators need to be lowered due to work on other equipment. Lowered the elevators at 1614 GMT.  Raised the elevators at 2230 GMT.

2/10/04

MR

Tower systems is finished with the tower and the elevators need to be returned to their operating position.  Raised the towers at 1800 GMT.  RTS at 1830 GMT.

2/9/04

MR

Tower systems is here and will be working on the 60M tower connections. Lowered the 25M and 60M elevators at 1600 GMT.  They will remain lowered until tower systems is finished with the work.

10/6/03

MR

The instrument mentor wants the internal battery checked on the data logger for the 60M SW sensors.  Checked the battery.  The reading is 3.29 volts.  RTS at 1740 GMT.

8/14/03-8/15/03

CAM

Dave Cook on site for annual 25 and 60M T/H calibration changeouts and temperature sensor ice baths.  Tower Systems also on site for tower inspection and upgrades to PGS filter systems.  West booms lowered at 1515 GMT on 8/14 for Tower Systems maintenance.  The 60M level plungers connectors were discovered to have cracks developing on the boom portion of the connector.  To minimize stress, the booms were left down overnight.  Returned on 8/15 for sensor calibration changes.  R/R 60M *T/H sensor.  Raised booms and RTS at 1939 GMT on 8/15.   *Old – S4930005  *New – S1720002

5/15/03

PAD

60M T/H Side B was let down to perform maintenance on other instruments.  Put up @ 2106 GMT.  No action performed on this instrument. RTS @ 2140 GMT.

3/18/03

JEM

The 60M T/H has not collected since 3/17/03 @1502 GMT.  The power strip that powers the bit driver in the AOS trailer was found powered off.  Powered the power strip back on @1505 GMT.  The power strip was likely powered off by accident while rearranging the AOS system.  RTS @1515 GMT.

2/27/03

MR

The 25M T/H will not communicate with the SDS system.  T/S found a bad fiber optic cable.  R/R the cable and the 60 M T/H cables as well.  Communications was restored.  RTS at 1730 GMT.

2/26/03

MR

The 60M T/H probe that was installed on Friday is not working and is causing the 25M T/H to fail collections.  Lowered the tower at 1658 GMT.  T/S found that the battery for the data logger was dead and that the 60M T/H probe had not been wired properly.  Wired the probe properly and installed a new battery.  The probe began to work and was reading ok by the time the tower was raised.  Notified the mentor of the problem.  Raised the tower at 2022 GMT.

2/21/03

MR

The instrument mentor wants the 60M *T/H "B" side (west side) probe changed out.  Lowered the tower at 1927 GMT.  R/R the probe.  Raised the tower at 2120 GMT.  RTS at 2127 GMT.  *Old - W0120011  *New - S4930005

2/4/03

JEM

The entire Central Facility has experienced a power outage at approximately 1845 GMT.  Power  was restored to the Central Facility at approximately 1945 GMT.  RTS @2000 GMT. 

8/2/02

D. Cook

Booms lowered from 1354 to 1912 GMT for tower maintenance and 25/60m T/H calibrations.  R/R *T/H sensor for annual calibration.  *Old – S4930005  *New – SW0120011

8/1/02

D. Cook

TSI on site.  Booms lowered from 1300 to 2130 GMT for tower maintenance. 

5/14/02

MR

The instrument data needs to be collected and placed on the door step for the SDS to collect.  Collected the data from 1427-1440 GMT.  RTS at 1442 GMT.

8/8/01

MR

The instrument mentor is on site to replace and calibrate the 25M and 60M T/H probes. Lowered the tower at 1356 GMT.  R/R the *60M T/H probe.   Tested and calibrated the probe.  The probe tested good.  Raised the tower at 1849 GMT.  RTS at 1856.   *Old - S4930004  *New - S4930005

2/1/2001

MR/KT

Lowered the SW (B) side of the 60M tower from 2140 GMT to 2125 GMT to secure a loose hygrometer cable at the 60M level. All instruments on the SW side of the tower were affected during this time.

10/30/00

CAM

Instrument mentor sent a new CR10X data logger to replace the old 21X data logger and SM716 storage module on the west side. Waited for the 1806 GMT collection period to complete and then powered the data logger off at 1807 GMT. R/R the 21X *data logger with the new CR10X data logger. R/R the **power supply. The power supply will power both the 25 and 60M loggers. Removed the ***storage module from service. Made all the necessary connections and powered the data logger on at 1930 GMT. Checked all readings and found that the temperature and vapor pressure were reading 99999. Confirmed the program and all connections were correct. Contacted the mentor who advised that the excitation voltage may need to be lowered with the new data loggers. Changed the excitation voltage in the program (table 1, step 6) from 90 to 40 mV at 2110 GMT. The temperature and vapor pressure readings then began to report accurately. RTS status O.K. The old components will be returned to David Cook. *Old - 5660 (21X) *New - 23757 (CR10X) **Old - n/a **New - 19984 ***Old - 4587

10/20/00

CAM

SDS comlog reports indicated that the 60M T/H had not successfully collected files since 2004 GMT on 10/18. Attempted to telnet into the tower COS but was unable to link to either the production or development ports. T/S found that the power supply which powers ports 0 and 4 bit drivers was unplugged. Plugged the power supply in at 1440 GMT and was then able to telnet into both ports. The following data collection was successful at 1512 GMT. RTS status O.K.

8/14/2000

CAM

David Cook on site for annual sensor calibrations and change outs. Lowered all tower booms at 1447 GMT. Connected power and data jumper cables and let sensors stabilize at ground level for 3 hours and checked sensor performance. R/R the west 60M *humidity sensor for annual calibration. Performed ice bath calibration on the temperature sensor. Raised the booms and RTS at 2138 GMT. *Old - S1720003 (model HMP35D) *New - S4930004 (model HMP45D)

11/16/99

CM/SS

Instrument mentor requested that Site Ops check the 60M T/H aspirator fan. The 60M temperature is reading high and the mentor suspects the fan may have failed. Lowered the 60M tower B side booms at 1610 GMT. Opened the fan enclosure and noticed that the cables were possibly interfering with the fan operation. Connected power at ground level and observed that the fan was operational. Used zip ties and electrical tape to secure the cables in a manner as to not interfere with the fan. Raised the booms and RTS at 1700 GMT. Notified mentor of results. Mentor will advise Site Ops if the high temperature problem persists.

5/19/99

5/20/99

CAM/DC

David Cook on site for annual sensor calibrations. Lowered the 60M B side boom at 1755 GMT on 5/19. Performed temperature sensor ice bath calibration. Sensor checked out O.K. R/R the *humidity sensor for calibration. New sensor checked out O.K. Left the boom at ground level overnight for ECOR maintenance. Raised B side boom and RTS status O.K. at 1755 GMT on 5/20/99. *Old - S4520023 (Model HMP45D) *New - S1720003 (Model HMP35D).

7/16/98

7/17/98

CAM/DC

David Cook on site for 6 month calibrations. Lowered the booms at 1458 GMT on 7/16/98. R/R *Humidity sensor for 6 month calibration. Performed ice bath calibration on temperature sensor. Left booms connected at ground level overnight. Returned on 7/17/98 and rechecked sensors. Status O.K. Raised booms and RTS at 1513 GMT. *Old - S1720004 *New - S4520023

6/23/98

MW

SDS operations reported a loss of communications with all of the 60M tower instruments beginning at 1004 GMT today. Power cycled the tower COS at 1404 GMT. Communications restored after the power cycle. RTS at 1405 GMT.

12/19/97

CAM

Lowered booms from 2100 GMT to 2210 GMT for ECOR maintenance.

11/5/97

CAM

Returned to tower at 1445 GMT on 11/5. *R/R the 60m Qualimetrics humidity sensor model 5120-E with new Vaisala humidity sensor model MHP35D at 1600 GMT. Booms remained at ground level until 2135 GMT for other maintenance. * Old – 231 * New S1720004

11/5/97

CAM

While on site for 25/60m humidity sensor replacement, instrument mentor also performed ice bath calibrations on the 'B' (West) side temperature sensors. Both the 25m and 60m booms were lowered on 11/4/97 at 2020 GMT and left connected at ground level overnight. Returned to tower on 11/5 and performed ice bath calibration on the 60m temperature sensor from 1920 to 1940 GMT. Raised booms and RTS at 2135 GMT.

11/4/97

CAM

David Cook, instrument mentor, was on site 11/4/97 to replace the 'B' (West) side 25m and 60m Qualimetrics humidity sensors with new Vaisala humidity sensors. Lowered the 'B' side booms at 2020 GMT on 11/4. Connected power and signal jumpers at ground level at 2034 GMT. Replaced the 25m humidity sensor on 11/4. Sensors were left connected at ground level overnight.

10/28/97

CAM

SDS trouble report indicated that no files were being received from 60M T/H since 2205 GMT on 10/26/97. T/S on 10/28 found that the "B lower" GFCI circuit breaker at the base of the tower was tripped. The 25M T/H data logger power supply was plugged into this outlet. The 60M T/H bit driver was receiving its power from the 25M data logger so when the 25M data logger lost power so did the 60M bit driver. Rerouted the 60M bit driver power so that it now pulls power from the 60M data logger as it should. SDS data collections for 60M T/H then resumed status O.K.

9/25/97

CAM

David Cook requested Site Ops verify the data logger parameters and correct if necessary. Found that parameter 8 of step 1 was incorrect. Changed parameter from 1.0043 to 1.0041 at 1950 GMT.

9/04/97

CAM

SDS operator indicated that no files were being received from 60M T/H. Power cycled 60M T/H data logger at 1845 GMT. Data transfer resumed on the next collection interval.

8/14/97

GRS

Raised the 60M boom on the "A" East side on 8/14/97 at 1549 GMT. Raised the "B" West side at 1602 GMT. RTS Temp/Hum sensors on both sides.

8/13/97

GRS

Lowered the 60m boom at 1600 GMT on the "B" side. *R/R the humidity sensor on the "B" side. Calibrated all of the sensors. Will remain down overnight for further checks. * Old - 226 * New - 231

5/28/97

CAM

David Cook requested Site Ops check the possibility that the 25M and 60M T/H communications lines have somehow been reversed. Disconnected the 25M data logger and had SDS operator attempt to tip the logger. The tip was successful to the 25M but unable to tip 60M thus verifying that the communications were swapped somewhere along the line. Swapped the communications lines at the data loggers as a temporary fix at 2110 GMT. Will research the situation and find where the lines were actually reversed. Meanwhile communications are now correct.

5/21/97

MW

Dave Cook requested the 25M and 60M temp/hum sensors and aspirators be lowered in order to check their operation. Lowered the booms at 1500 GMT. Connected power jumpers and observed both aspirators working properly. Connected the signal lines and monitored the temp/hum sensors after a 10 minute warm up period. The results were as follows: 60M temp = 20.67. 60M hum = 53.37. 25M temp = 20.74. 25M hum = 54.22. Attempted to call Dave Cook while sensors were down but could not get in touch with him. Raised both tower booms and RTS at 1600 GMT.

5/01/97

CM/MW

Lowered boom for ECOR maintenance at 1720 GMT. Raised boom and RTS at 1915 GMT.

2/11/97

CM/MS

Raised boom and RTS at 2120 GMT.

2/10/97

MW/ZW

Lowered boom at 1950 GMT for ECOR maintenance. Unable to raise boom due to ECOR Sonic power problems. Left unpowered at ground level overnight.

2/05/97

CAM/DC

Lowered 60M T/H at 1420 GMT for sensor checks. * R/R 60M humidity sensor. RTS at 2030 GMT. * Old - 109 * New - 226 (Cal 12/3/96)

2/04/97

Vendor

Tower Systems completed repairs and system RTS at 1845 GMT. Safety removed lock and tag out.

2/04/97

CAM/DC

Lowered 60M T/H at 2030 GMT for sensor checks. Raised boom and RTS at 2220 GMT.

2/03/97

Vendor

Tower Systems on site to make all necessary repairs to tower including replacing side B winch cable. System B booms lowered at 1530 GMT. Bottom limit switches were moved closer to base of rail and hard stops were removed. System B left down over night.

10/23/96

Safety

Elevator controls were locked and tagged out due to tower damage until tower systems can inspect and repair.

10/22/96

DC/CAM

Raised boom and RTS at 1900 GMT.

10/21/96

DC/CAM

Mentor on site. Lowered both 25 and 60 T/H for 6 month calibrations at 1800 GMT. Left the booms at ground level overnight.

9/30/96

GRS

Lowered boom and * R/R 60 T/H at mentors request. * old - 226 * new - 109

9/10/96

DKB/CAM

1942 GMT Lowered boom and * R/R Temp/ Hum sensor at mentors request. During lowering, the 60 MT boom AC power wire snagged on the 25 MT boom receptacles and damaged several wires. Repairs were made and the sensor RTS at 2300 GMT. * old - 234 * new - 226

6/6/96

CAM

1604 GMT T/S 25 T/H power cycled 60 T/H data logger.

5/21/96

CAM

1530 GMT Lowered tower for ECOR C1 installation and sensor calib with mentor. Temp sensor was reading 1.5 deg C high. R/R and tested OK. RTS on 5/23 1700 GMT. Note: Temp sensors have no SN.

4/16/96

CAM

Special visit to * R/R Humidity sensor. * Old - 109 New - 234

4/3/96

CAM

1530 GMT T/S no files collected by SDS since 4/2 2100 GMT. Reset bit drivers and tested OK at 1600 GMT.

4/2/96

CAM

1607 GMT Lowered tower to calib sensor with mentor. RTS at 2240 GMT.

3/25/96

CAM/ZW

1855 GMT. Lowered boom to R/R 25M Humidity Sensor. RTS at 2145 GMT.

3/19/96

TMG/CAM

1905 GMT. Lowered boom to R/R 25M Humidity Sensor. RTS at 2130 GMT.

2/21/96

CAM

T/S no file sent to SDS since 0901 GMT. Power cycled F.O. bit drivers and tested OK. RTS at 1501 GMT.

2/13/96

TMG/GRS

AC power secured for construction at 1510 GMT. RTS at 2149 GMT.

2/6/96

CAM/Cook

Completed upgrade and testing. * Installed storage module (first time). RTS at 2103 GMT. * New - 4587

2/5/96

CAM/Cook

Lowered sensor for 6 month calib and E-Prom upgrade. Installed 25M T/H.

1/29/96

TMG/CAM

AC power secured for construction at 1515 GMT. RTS at 2030 GMT.

12/27/95

TMG/CAM

AC power secured for construction at 1530 GMT.

9/19/95

CAM

* R/R Humidity sensor. Note: Tried sensor 231 but tested bad. 231 returned to vendor. * Old - 226 New - 109