ASOSMod75RevA.book.pdf

ENGINEERING HANDBOOK 11 VOLUME 2 SECTION 3.6

Revision A EHB-11 09/08/05

ASOS MODIFICATION NOTE 75, Revision A (for Electronics Technicians) Maintenance, Logistics, and Acquisition Division

W/OPS12: JD/AL

SUBJECT: Installation of ASOS Dewpoint Sensor (Vaisala model DTS1)

PURPOSE: Instructions for installing the Vaisala DTS1 Dewpoint Sensor on the Automated Surface Observing System (ASOS)

SITES AFFECTED: This modification applies to all ASOS sites with H083R and 1088 temperature dewpoint sensors, including National Weather Service (NWS), Federal Aviation Administration (FAA), and Department of Defense (DoD) sites.

EQUIPMENT

AFFECTED

ASOS Data Collection Package (DCP) or Single Cabinet ASOS (SCA), Acquisition Control Unit (ACU)-only sites.

PARTS REQUIRED: The parts required are issued to each site by W/OPS12 from the National Logistics Support Center under the applicable approved site-specific Request for Change.

S100-2MT4-3 DTS1 Dewpoint Sensor S100-FMK75DTS DTS1 Mounting Kit S100-2A1A3A16 Circuit breaker module (DCP) S100-2A1A3A8CB1 Circuit breaker (SCA) S100-2A3A1-1 Fiber-Optic Modem SIO and A/D Boards as identified in Attachment A or by WFO request.

SPECIAL TOOLS

AND EQUIPMENT

REQUIRED

6-inch 18 AWG, 2 each, black and white (technician supplied) Round file (technician supplied) 25-foot fish tape (technician supplied)

TIME REQUIRED 4 hours

EFFECT ON

OTHER

INSTRUCTIONS

ASOS Site Technical Manual, Change 2, Revision A, Chapter 5, “Temperature/Dewpoint Sensors”; and ASOS Modification Note 75.

PREREQUISITES: Modification Note 73 must be installed prior to installing this modification note. ACU Firmware version 2.79 or greater must be installed in the ACU CPU. Follow the procedures in Modification Note 80A if a Firmware upgrade is required.

AUTHORIZATION: This modification is authorized by Request for Change S01143.

VERIFICATION This modification has been tested for operational integrity by the NWS and verified by the sites listed in Attachment B.

SECTION 3.6 VOLUME 2 ENGINEERING HANDBOOK 11

EHB-11 Revision A 09/08/05 2

GENERAL:

This modification note provides instructions for installing and configuring the new Vaisala DTS1 dewpoint sensor.

INTRODUCTION:

The ASOS replacement dewpoint sensor is the Vaisala model DTS1. This sensor replaces the dewpoint reporting capability of the standard ASOS HO83 or 1088 hygrothermometer. The 1088/ HO83 will be retained as the source of ambient temperature. It is possible that the DTS1 will be modified to produce an ambient temperature, thereby allowing replacement of the 1088/HO83 entirely.

The DTS1 will be mounted on the same 3- to 4-inch pole on which the 1088/HO83 is currently mounted. A mounting frame provided with the DTS1 attaches to the existing pole using U-bolts.

The mounting frame contains a short section of 3-inch pipe to which the DTS1 mounts. The orientation of the frame is to the north, in line with the centerline of the 1088/HO83 and to the left of the enclosure door. This allows the DTS1 sensor arm to extend in the direction opposite to that of the 1088/HO83 aspirated radiation shield (or “mushroom”).

The DTS1 uses flexible conduit to carry AC power and fiber-optic signal cable between the sensor enclosure and the DCP raceway or, in the case of SCA installations, the rigid conduit that couples to the 1088/HO83 flexible conduit. The DTS1 flexible conduit will follow the same path as the existing cables to the 1088/HO83. In the case of DCP installations, a conduit junction box is mounted to the raceway, thereby allowing both 1088/HO83 and DTS1 flexible conduits to be connected to the same wireway opening. For SCA installations, the conduit junction box is attached to the top of the rigid conduit, and is used to supply flexible conduit pathways for both sensors.

BEFORE INSTALLING THE NEW DEWPOINT SENSOR:

1. Call the ASOS Operations and Monitoring Center (AOMC) at 1-800-242-8194 to confirm on which ASOS you will be installing the new dewpoint sensor. Make certain the site-specific database is available, and upload the current configuration before installing the new dewpoint sensor.

2. Obtain approval from the responsible MIC/OIC/Observer before starting installation. Installation of the new dewpoint sensor may be performed on any day of the month, if restrictions in steps 3 and 4 are satisfied.

3. Commissioned Sites Only: Do not start installation during inclement weather, precipitation, instrument flight rule conditions, or if any of those conditions are expected within 3 hours. The responsible MIC/OIC/Observer will define these meteorological conditions.

4. Do not begin new dewpoint sensor installation when synoptic observations are at 3, 6, 9, 12, 15, 18, and 21Z. Installing the power and fiber-optic cabling for this

3 09/08/05 modification can be quite time-consuming. Allow approximately 8 hours to complete installation and restart ASOS.

5. Immediately before beginning work at NWS-staffed sites, the MIC/OIC/Observer will inform the tower, and any other critical users, that the ASOS will be turned off for the new dewpoint sensor upgrade. At an unstaffed site, the electronics technician (ET) will inform the tower, via controller video displays (CVD) and Operator Interface Devices (OID), to log off and shut down the displays to avoid unnecessary problems.

6. Begin the installation process immediately following the transmission of an hourly observation. At NWS-staffed sites, normal backup observing procedures will be implemented.

7. Sites without a local OID (i.e., no RS-232 connected for the primary OID) must attach a terminal to the primary OID port of the ACU 1A9J22, or the Single Cabinet ASOS (SCA) 1A9J19, before proceeding.

8. Perform the following steps to upload the current system configuration to the

AOMC.

a. Log on as TECH.

b. Key to the AOMC page (REVUE-SITE-VERSN-AOMC). Command an upload of all data files except VOICE AIRPORT NAME. Wait for all of the lines to change from "UPLOAD REQ" to "COMPLETE." When complete, key EXIT.

c. Key to the COMMS page (REVUE-SITE-CONFG-COMMS); disable all hard-ware and communication ports. The system voice function will automatically broadcast a "not available" message. When complete, key EXIT.

d. Key to the AOMC page (REVUE-SITE-VERSN-AOMC); cancel the automatic update of the RS-232 comm started by the configuration changes made in step c. When complete, key EXIT.

CAUTION

Be sure to complete step d in the following procedure as soon as possible after step c. DO NOT upload the communications made in step c to the AOMC.

NOTE: DO NOT disable the local OID in step c.

09/08/05 4

PROCEDURE:

PART 1 – SENSOR ASSEMBLY INSTRUCTIONS

1. Open the DTS1 wooden shipping crate and locate the DTS1 power cabling bundle.

Remove the red and yellow wires from this cable bundle. The red and yellow heater power wires are not used.

2. Attach the solar shield to the crossbar with the black nut. Tighten the nut and then tighten the solar shield roof by turning it manually (see Figure 1).

3. Mount the flap door to the crossbar (see Figure 1).

Figure 1. Install Solar Shield and Flap Door

Black nut

Solar shield

Crossbar Flap door

Screw

Solar shield roof

5 09/08/05

4. Attach the crossbar to the backside of the mounting frame and L-shaped plate (see Figure 2).

Figure 2. Attach Crossbar

Crossbar

Mounting frame ¤ Attaching screws

09/08/05 6

5. Attach the enclosure to the mounting frame using four screws. Insert the screws from the backside. Install washers and tighten the nuts inside the enclosure (see Figure 3).

6. Place the supporting bracket over the lower holes of the mounting frame, and then thread the U-bolt through the supporting bracket and mounting frame. Install the washers and loosely fasten the two nuts (see Figure 3).

Figure 3. Attach Enclosure to Mounting Frame

Attaching screws

Nuts inside enclosure

Supporting bracket

U-boltFasten loosely

7 09/08/05

7. Mount the assembly on the pole and then tighten the nuts (see Figure 4)

Figure 4. Mount Assembly on Pole

Support

Pole

Supporting bracket

09/08/05 8

8. Thread the four screws through the supports of the mounting frame (see Figure 5).

Attach the washers and nuts. Do not fully tighten at this time.

9. Mount the radiation shield's apertures in between the supports and the screws (see Figure 5). Tighten the screws with the Allen key and the nuts with a wrench.

10. Set the upper hook fastened to the back of the transmitter into the upper rail (see Figure 6).

11. Press on the bottom front of the transmitter so that the clamps snap into the lower rail (see Figure 6).

12. Connect the power connector to the transmitter connector POWER J2 (see Figures 6 and 7).

13. Connect the modem connector to the transmitter connector MODEM J1 (see Figures 6 and 7).

Figure 5. Mount Radiation Shield

NOTE: The transmitter is mounted on the rails in the back wall of the enclosure.

Support

Radiation shield's aperture

Attaching screw

Mounting frame

9 09/08/05

Figure 6. Transmitter Mounting

Rails for the transmitter

Power connector

Modem connector

Rails for the transmitter

Transmitter's mounting from backside.

09/08/05 10

Figure 7. DTS1 Wiring Schematic

L1 N

21 11

A2 A1

22 12

24 14

P

H

A

S

E

P

H

A

S

E

N

E

U

T

R

A

L

N

E

U

T

R

A

L

11 09/08/05

14. Some DTS1 sensors were delivered without fiber-optic modules installed. In this case, install the fiber-optic module using the supplemental hardware kit provided (see Figure 8).

Figure 8. Fiber-Optic Installation Completed Using Supplemental Hardware Kit

09/08/05 12

15. Take off the probe cable bushing nut and rubber sealing located in the bottom of the electronics enclosure (see Figure 9).

16. Loosen the flap door screw and turn the door aside.

17. Thread the probe through the cable bushing and cable bushing nut located on the bottom of the electronics enclosure (see Figure 9).

18. Thread the probe through the longitudinal hole of the crossbar and push the probe further through the crossbar until it comes out from the flap door. You can tie the probe cable to the radiation shield by using a cable tie threaded through the holes of the radiation shield (see Figure 9).

Figure 9. Installing Sensor Probe

Probe cable bushing

DTS1 Dewpoint Sensor.

Rubber sealing

Cable bushing nut

Flap door

Probe cable

Cable tie

13 09/08/05

19. Pull out the probe and the entire length of cable from the flap door.

20. Remove the yellow plastic probe head cover. The probe cover should be stored inside the DTS1 when not installed.

21. Thread the probe through the black nut (see Figure 10).

22. Set the probe head's groove to the same level as the attaching springs (see Figure 10).

23. Attach the probe by pushing the springs around the probe head's groove (see Figure 10).

24. Close the flap door and tighten the flap door screw. Set the rubber sealing around the cable in between the cable bushing and the cable bushing nut (see Figure 9).

25. Tighten the cable bushing nut.

Figure 10. Installing Sensor Probe Inside Solar Shield Assembly

Flap door

Black nut

Probe head's groove Attaching Springs

09/08/05 14

PART 2 – OID PREPARATIONS

1. At the OID, log on to the system as TECH.

2. If an additional SIO board is required, install the new SIO board now and configure it according to the jumper configuration table on page 2-177 of the ASOS Site Technical Manual. Be sure to remove the IACK jumper, on the back of the VME rack, at the position where the new SIO is being installed.

3. If an additional A/D board is required, install the new A/D board now and configure it according to the "-20 ASSY" jumper configuration table on page 2-181 of the ASOS Site Technical Manual. Be sure to remove the IACK jumper, on the back of the VME rack, at the position where the new A/D board is being installed.

4. Proceed to the Hardware Configuration page (REVUE-SITE-CONFG-HDWE) and increase the SIO and/or A/D board quantities accordingly.

5. Proceed to the Sensor Configuration page (REVUE-SITE-CONFG-SENSR) and configure the appropriate SIO port that will be connected to the DTS1 as DT.

6. Proceed to the Define Configuration page (REVUE-SITE-CONFG-DEFIN) and configure the Dewpoint sensor as DTS1.

7. Proceed to the Sensor Status page (REVUE-SENSR-STAT) and turn on report processing for the Dewpoint sensor.

PART 3 – SITE INSTALLATION

1. At the 1088/HO83 mounting pole, install the first L-bracket directly beneath the 1088/HO83 mounting collar. Secure it to the mounting pole using the provided U-bolt, lock washers, and nuts (see Figures 11 and 12).

2. Loosely install the second L-bracket about 2 feet below the first L-bracket.

NOTE: This section applies to sites with DCP installations only. Sites with SCA installations must not perform the procedures in this section until the DTS1 and any associated hardware have been installed.

The new processor board (see Modification Note 73, Revision B) must be installed before proceeding.

NOTE: Do not initiate a DCP download.

NOTE: Apply a small amount of antiseize compound to the threads of each fastener in steps 1 through 5.

15 09/08/05

3. Install the diagonal support between the TWO L-brackets, shifting the lower L-bracket as necessary. Tighten this assembly before proceeding.

Figure 11. DTS1 Installed

NOTE: DTS1 mounting hardware received with the Initial Issue of the sensor may be marginally too small at some sites. This is due to a difference in the nominal size of the 1088/HO83 mounting pole. To correct this, an optional modification kit is now available to fit 1088/HO83 mounting poles with nominal outside diameters from 3.5 to

4.0 inches. Order S100-FMK75-B, NWS0-33-280-0002, MOUNTING KIT(ALT), DTS1.

09/08/05 16

Figure 12. Overall Installation Diagram

SE

N

SO

R

G

RO

U N

D

IN

G

A

W G

G R O

U N

D W

IR

E

SE

N

SO

R

SU

PP

LI

ED

S

TU

D

AN

D H

AR

D

W

AR

E

R

AC

EW

AY

C O

N D

U

IT

P/

O N

EX

T

AS

SE

M

BL

Y

BU

M

PE

R S

TR

IP

P/

O N

EX

T

AS

SE

M

BL

Y

SC

AL

E:

N

O N

E

CO

N

D U

IT

JU

N

CT

IO

N

B O

X

U

PP

ER

L

-B R

AC

KE

T

LO

W

ER

L

-B

RA

CK

ET

D

IA

G O

N

AL

S U

PP

O

R T

U -B

O

LT

/H O

D

TS

W

IR

E

CO

LO

R

TE

M

IN

AL

N U

M

BE

YE

LL

O

W

G

EE

N

H

IT

E

BL

AC

K

ED

N

O C

O N

N

EC

TI

O

N

2M T4

A2

TB

1-

2M T4

A2

TB

1-

2M T4

A2

TB

1-

N O

C O

N N

EC

TI

O N

BL

AC

K

G

EE

N

W H

IT

E

JU

M

PE

R

BL

AC

K

JU

M

PE

H

IT

E

W

IR

E

CO

LO

TE

M

IN

AL

N U

M

BE

R

PEN

L1

N

TO

N

L1

T O

L

17 09/08/05

4. Install the 3-inch pole section to the L-brackets, making sure the bottom of the pole is flush with the bottom of the lower L-bracket (see Figure 13).

5. While holding the U-bolt and supporting bracket a few inches from the top of the new mounting pole, install the DTS1 sensor atop the new mounting pole.

6. Remove power from the DCP/SCA and open the Faraday box.

7. At the existing 1088/HO83 electronics enclosure, disconnect the AC power wires and the fiber-optic cables, noting their terminal locations for all connections. Install the fiber-optic cable end caps.

8. Remove the 1088/HO83 flexible conduit from the bottom of the sensor and from the raceway (or rigid conduit in the case of SCA installations) and pull out the 1088/HO83 cabling from this flexible conduit.

9. Remove the raceway access panel and run a fish tape back to the DCP/SCA.

10. Pull the DTS1 power and fiber-optic cabling from the DCP/SCA to the 1088/HO83.

11. Using a round file, remove any burrs from the conduit junction box as necessary to prevent any chafing of the cable assemblies.

Figure 13. Bottom Bracket

NOTE: Be extra careful when pulling the DTS1 cables through the raceway. If you hit a snag, carefully work the cabling as to not damage the existing fiber-optic cables.

09/08/05 18

12. Assemble the conduit junction box see (Figure 14).

13. Remove the access panel on the conduit junction box and attach it to the raceway opening using the supplied hardware.

14. Run all the 1088/HO83 cabling through the longer extension of the conduit junction box. Run the DTS1 cabling through the shorter extension. Install all gaskets and covers on the raceway and conduit junction box.

15. Pull the DTS1 cabling through its flexible conduit and the 1088/HO83 through its separate flexible conduit. Attach these conduits to their respective sensor enclosures.

16. Reconnect the 1088/HO83 power and fiber-optic cables to their appropriate terminal locations.

Figure 14. Conduit Junction Box Assembly

NOTE: To minimize the risk of damage to the fiber-optic cables, allow ample slack in these cables so any bending radius is no less than 2 inches.

Male-Male Adapter

Female-Female Adapter

Liquidtight Connector (x2)

Junction Box Washer (x3)

Nipple Raceway Wall

19 09/08/05

17. At the DTS1, complete the wiring connections. The red and yellow heater power wires are not used. (See Figure 15 and refer back to the wiring schematic in Figure 7.)

18. Using 18 AWG white and black wires, make two 6-inch-long jumpers and install them between the positions on the DTS1 terminal block (see Table 1 and Figure 15).

19. On the fiber-optic module inside the DTS1, closely examine the number of leads between the fiber-optic circuit board and the connector barrels. The connector barrel with two leads going into it is the transmit side, the connector barrel with three leads going into it is the receive side. Install the fiber-optic cables to their respective connector barrels (see Figure 16).

Figure 15. DTS1 Power Connections

Table 1

Wire Color Terminal ID Black L1 to L2 White N1 to N2

09/08/05 20

20. Attach the copper grounding wire to the bottom of the DTS1 as shown in Figure 17.

Attach the opposite end of the grounding wire near the same grounding location as the 1088/HO83.

21. For DCP Installations, install the circuit breaker module in the next available position on the circuit breaker rack (2A1A3).

For SCA Installations, locate the next unused circuit breaker position. Remove the circuit breaker panel (7A1A1A3) from the SCA back plane and install the new circuit breaker using the hardware provided. Attach the gray and white wires

Figure 16. DTS1 Fiber-Optic Connections

Figure 17. Grounding Wire

21 09/08/05 associated with the new circuit breaker location to the appropriate circuit breaker connectors. Reattach the circuit breaker panel.

22. Install the new fiber-optic module in the next available slot on the Faraday box.

23. Connect the corresponding SIO port to the newly installed fiber-optic module.

Refer to Table 3.4.1 (page 3-38) and Figure 3.4.6 (page 3-49) in the Site Technical Manual or Attachment C to this modification note for SIO and fiber-optic module assignments.

24. Connect the fiber-optic cables from the DTS1 to the newly installed fiber-optic module.

25. Connect the wires listed in Table 2 coming from the DTS1 to the terminal strips inside the Faraday box corresponding to the position of the newly installed circuit breaker.

26. By default, the second half of the circuit breaker rack (the right side) is not powered. If installing this dewpoint sensor necessitates a circuit breaker to be installed on this “nonpowered side,” then lower the circuit breaker. Using spare pieces of 14 AWG wire roughly 6 inches long, install these wires as indicated in Table 3.

27. Before current can flow to the DTS1, the DCP must get a download from the ACU.

This can be performed by one of the following methods:

a. Laptop Method

Table 2

DTS1 Wire Color AC and DC Power Distribution Black AC Hot White AC Neutral Green Ground

NOTE: For additional wiring and configuration help, refer to Attachment C of this modification note.

Table 3

Wire Color From To White A1A4-18D A1A4-21D

If 18D and 21D are too crowded to insert another wire, then this same electrical connection can be made between:

White A1A4-17A A1A4-20A Black A1A4-12C A1A414C

09/08/05 22

(1) Restore power to the DCP/SCA and ensure the 1088/HO83 is functioning properly.

(2) Connect a laptop up to the DCP as local OID, as explained in paragraph

3.3.4 in the ASOS Site Technical Manual. Proceed to the Processor Status page (MAINT-PROC) and command a RESET of the DCP HARD field.

b. DCP Memory Board Method

(1) Pull the DCP memory board (2A1A2A3) and remove the J34 jumper (see Figure 18) from the memory board for at least 5 minutes. This will allow the memory chips to completely drain.

(2) Reinstall the memory board. Restore power to the DCP/SCA and ensure the 1088/HO83 is functioning properly.

Figure 18. J34 Jumper on DCP Memory Board

(All components not shown)

Jumper for battery backup, J34

23 09/08/05

c. Primary OID Method

(1) Restore power to the DCP/SCA and ensure the 1088/HO83 is functioning properly.

(2) At the primary OID, log on to the ASOS and proceed to the Processor Status page (MAINT-PROC) and command a RESET of the DCP HARD field.

28. Check for 115 VAC on the AC/DC distribution block inside the Faraday box for the lines running to the DTS1.

29. Close the Faraday box.

30. Switch the DTS1 circuit breaker on and turn the power switch on inside the DTS1.

31. At the DTS1, check for 24 VDC across either of the positive and negative posts on the upper right-hand corner of the 24-volt power supply.

32. Close the DTS1, 1088/HO83, and the DCP/SCA.

NOTE: The default setting for the thermostat is 60 degrees Celsius, 140 degrees Fahrenheit.

Verify that the thermostat is set to 60 degrees Celsius by turning the control dial clockwise until it stops at the 60-degree mark (see Figure 19). Do not use excessive force to turn the control dial.

Figure 19. Thermostat Overtemperature Protection

09/08/05 24

PART 4 – SENSOR CONFIGURATION

1. For SCA Installations - Perform Part 2 of this modification note then return to Part

4, step 2.

2. At the OID, log on to the system as a technician and proceed to the Processor Status page (MAINT-PROC). Command a RESET of the DCP HARD field.

3. Proceed to the 12-Hour Test Sensor page (REVUE-SENSR-12HR-TEST). After a minute or two, 1-minute readings from the 1088/HO83 will display in brackets on this page.

4. Proceed to the AOMC page and command an upload of the CONFIG pages.

5. Make a note in the SYSLOG (MAINT-ACT-FMK) that FMK Mod 75 has been completed and clear any fail flags as a result of powering down the DCP.

PART 5 – REPORTING INSTRUCTIONS

1. Report the completed modification in EMRS according to instructions in NWS

Instruction 30-2104, Maintenance Data Documentation, Part 4 and Appendix D.

Include the following information in the EMRS Report.

a. Block 7: ATDP

b. Block 8: Serial number

c. Block 17a 75A

2. See Attachment D to this modification note for a completed sample of the EMRS Report.

Mark S. Paese Director, Maintenance, Logistics, and Acquisition Division

Attachment A - Specific Site Configurations Attachment B - Test Sites Attachment C - Example Configuration Attachment D - Sample EMRS Report

NOTE: After Modification Note 75A has been reported as completed in the EMRS database, the EMRS group will activate equipment code ADTS and ATEMP, and equipment code ATDP will be deactivated.

Al Wissman

Digitally signed by Al Wissman DN: CN = Al Wissman, C = US, O = Maintenance Branch, OU = OPS12 Date: 2005.09.09 08:28:01 -04'00'

A-1 09/08/05

ATTACHMENT A

Sites Requiring Additional SIO or A/D Cards

Table 1. Sties Requiring Additional SIO Cards

Region Org Code Site IDs Alaska WV9261 AQT, AWI, BIG, BRW, BTT, EAA, ENN, FAI, KAL, ORT, SCC, TAL

WV9381 ANN, HNS, JNU, KTN, SGY, SIT

WV9903 ADQ, AKN, ANC, BET, CDB, CDV, ENA, GKN, HOM, ILI,

KVL, MCG, OME, OTZ, PAQ, SNP, SOV, SWD, TKA

Central WR9423 BWG, FFT, LOU, SDF

WR9438 BMG, EYE, GEZ, HUF, IND, LAF, MIE

WR9450 AAO, CFV, CNU, HUT, ICT, PPF, RSL, SLN, WLD

WR9465 ITR

WR9469 AKO, DEN, LIC

WR9476 CNY, EEO, RIL, VEL

WR9534 BEH, FWA, GSH, SBN

WR9546 DSM

WR9553 FNB, LNK, OMA, TQE

WR9562 IML, LBF

WR9564 AIA, CDR, CYS, DGW

WR9576 BYG, CPR, RIW, RKS, RWL

WR9610 TVC

WR9643 EAU

WR9645 AUW

WR9651 FSD, HON, RWF

WR9658 FCM, MIC, MSP, STP

WR9659 ATY, MBG, PIR

WR9662 CUT, GCC, IEN, PHP, RAP, SFD

WR9745 ASX, BRD, DLH

WR9750 AXN, BDE, FAR, GFK, PKD

WR9764 BIS, DIK, HEI, JMS

WR9957 CGI, MDH, PAH, POF

WR9971 COU, JEF, SET, STL, SUS, UIN

09/08/05 A-2

Eastern WN9307 EWN, HSE, MRH

WN9509 AFN, BAF, MHT, ORE

WN9528 BUF, DSV, ELZ, FZY

WN9617 BTV, MPV, MSS, MVL, PLB, SLK, VSF

WN9710 AOH, DFI

WN9712 BGR, FVE, HUL, MLT

WN9917 MGW, PIT

WN9925 IPT

WN9931 HGR, IAD, MRB

WN9938 AUG, BML, DAW, HIE, IWI, IZG, LEB

Southern WP9214 VLD

WP9219 AHN, FFC, FTY, PDK

WP9235 GLH, JAN, MEI

WP9240 AEX, ARA, ESF

WP9250 PIL

WP9253 BMQ

WP9259 FTW

WP9263 JCT, SJT

WP9325 CHA, TYS

WP9327 BNA, CKV, CSV

WP9334 HKA

WP9363 BGD

WP9919 BTR, MCB

WP9933 CDS, LBB

WP9957 MGM

Table 1. Sties Requiring Additional SIO Cards (Continued)

Region Org Code Site IDs

A-3 09/08/05

Western WT9375 FLG, GCN, INW, PGA, SJN

WT9389 MCE

WT9488 LOL, TVL

WT9578 BYI, IDA, LLJ, PIH, RXE

WT9597 MHS, SIY, SXT

WT9677 BHK, BIL, LVM, MLS

WT9681 BKE, BNO, JER, ONO, TWF

WT9698 EUG, MMV, PDX, SLE, SPB, UAO

WT9768 GGW, OLF

WT9773 BTM, MLP, MSO

WT9785 EAT, MWH, PUW

WT9903 EKO

WT9914 BLU, RDD

WT9922 BFI, BLI, CLM, FHR, HQM, OLM, PAE, RNT, SHN, SMP,

TIW, UIL

WT9932 BCE, CDC, LGU, MLF, OGD, PUC, SLC

WT9950 BZN, CTB, DLN, GTF, HLN, LWT

Table 1. Sties Requiring Additional SIO Cards (Continued)

Region Org Code Site IDs

09/08/05 A-4

Table 2. Sites Requiring Additional A/D Cards

Region Org Code Site IDs Central WR9553 OFK

WR9562 VTN

WR9564 BFF

WR9658 STC

WR9764 ISN

Eastern WN9414 BKW

WN9712 CAR

WN9938 CON

Southern WP9334 TUP Western WT9278 PHX

WT9698 AST

WT9773 FCA

WT9903 ELY, WMC

WT9950 HVR

B-1 09/08/05

ATTACHMENT B

Verfication Sites for Modification Note 75

Site ID Region City, State Cabinet Type

BRW Alaska Barrow, AK DCP

FAI Alaska Fairbanks, AK DCP

BIS Central Bismark, ND DCP

CNK Central Concordia, KS DCP

MDW Central Chicago, IL DCP

DCA Eastern Washington D.C. DCP

DMH Eastern Baltimore, MD SCA

GFL Eastern Glens Falls, NY DCP

PWM Eastern Portland, ME DCP

ITO Pacific Hilo, HI DCP

ATT Southern Austin, TX ACU

CSM Southern Clinton, OK DCP

GUY Southern Guymon, OK SCA

MIA Southern Miami, FL DCP

MOB Southern Mobile, AL DCP

AST Western Astoria, OR DCP

BOI Western Boise, ID DCP

CZZ Western Campo, CA SCA

PHX Western Phoenix, AZ DCP

SFO Western San Francisco, CA DCP

SLC Western Salt Lake City, UT DCP

SNT Western Stanley, ID SCA

UAO Weatern Aurora, OR ACU

09/08/05 B-2

(This page intentionally left blank.)

C-1 09/08/05

ATTACHMENT C

Additional Sensor Power and Communication Assignments

The following table is provided as an example of the convention used when a new sensor is added to ASOS.

For example, if the DTS1 will be plugged into the eighth sensor slot, then its corresponding circuit breaker module will plug into A9 on the circuit breaker rack. Likewise, the fiber-optic module for the sensor should connect to SIO Port 3-1, and the sensor power connections will be made on row 10 of the terminal strips inside the Faraday box.

Sensor # Circuit Breaker SIO Port Fiber-Optic DB-9

Connector AC/DC Terminal Strip

1 2A1A3A2 (heat) 1-2 W15P6/A3A1J1 A17-3 & A18-3

2 2A1A3A3 (heat) 1-3 W15P7/A3A2J1 A17-4 & A18-4

3 2A1A3A4 (heat) 1-4 W15P8/A3A3J1 A17-5 & A18-5

4 2A1A3A5 (heat) 2-1 W15P9/A3A4J1 A17-6 & A18-6

5 2A1A3A6 2-2 W15P10/A3A5J1 A17-7 & A18-7

6 2A1A3A7 2-3 W15P11/A3A6J1 A17-8 & A18-8

7 2A1A3A8 2-4 W15P12/A3A7J1 A17-9 & A18-9

8 2A1A3A9 3-1 W15P13/A3A8J1 A17-10 & A18-10

9 2A1A3A11 (heat) 3-3 W15P14/A3A9J1 A17-11 & A18-11

10 2A1A3A12 (heat) 3-4 W15P15/A3A10J1 A17-12 & A18-12

11 2A1A3A13 (heat) 4-1 W15P16/A3A11J1 A17-13 & A18-13

12 2A1A3A14 (heat) 4-2 W15P17/A3A12J1 A17-14 & A18-14

13 2A1A3A15 4-3 W15P18/A3A13J1 A17-15 & A18-15

14 2A1A3A16 4-4 W15P19/A3A14J1 A17-16 & A18-16

15 2A1A3A17 5-1 W15P20/A3A15J1 A17-17 & A18-17

16 2A1A3A18 5-2 W15P21/A3A16J1 A17-18 & A18-18

09/08/05 C-2

(This page intentionally left blank.)

ENGINEERING HANDBOOK 7 VOLUME 2 SECTION 3.6

D-1 09/08/05

ATTACHMENT D

Sample EMRS Report