33K-2-11_0671.pdf

T.O. 33K-2-11

30 MAY 1998

CHANGE 19 - 30 DECEMBER 2006

TECHNICAL MANUAL

DETAILED INSTRUCTION

AND INFORMATION

PERTAINING TO AIR FORCE PRIMARY STANDARDS

LABORATORY CALIBRATION

EXCHANGE STANDARDS AND ARTIFACT

PROFICIENCY TESTING STANDARDS

PMELS ONLY

Distribution Statement C - Distribution authorized to U. S. Government agencies and their contractors for official use or for administrative or operational purposes only, 28 February 1986. Requests for this document shall be referred to 562 CBSG/GBHA, 813 Irving-Wick Dr W, Heath, OH 43056-1199.

Destruction Notice - For unclassified, limited documents, destroy by any method that will prevent disclosure of the contents or reconstruction of the document.

Published under Authority of the Secretary of the Air Force

Basic and all changes have been merged to make this a complete publication.

A Change 19 USAF

INSERT LATEST CHANGED PAGES. DESTROY SUPERSEDED PAGES.

NOTE: The portion of the text and illustrations affected by the changes is indicated by a vertical line in the outer margins of the page.

Date of issue for original and changed pages are:

Original..................0 ...............................30 May 1998 Change .................. 10..............................30 May 2003 Change...................1 ......................30 December 1998 Change .................. 11......................... 30 August 2003 Change...................2 ...............................30 May 1999 Change .................. 12.....................30 December 2003 Change...................3 ..........................30 January 2000 Change .................. 13.......................28 February 2004 Change...................4 ...............................30 May 2000 Change .................. 14......................... 30 August 2004 Change...................5 ...........................30 August 2001 Change .................. 15........................ 30 October 2004 Change...................6 ......................30 December 2001 Change .................. 16.......................... 30 March 2005 Change...................7 ..............................30 April 2002 Change .................. 17......................... 30 August 2005 Change...................8 ..................... 30 September 2002 Change .................. 18......................... 30 August 2006 Change...................9 ........................30 February 2003 Change .................. 19.....................30 December 2006

TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 168, CONSISTING OF THE FOLLOWING:

Page * Change Page * Change Page * Change No. No. No. No. No. No.

Title A i ii 1-1 1-2 1-3 - 1-4 1-5 1-6 1-7 - 1-8 1-9 1-10 2-1 2-2 2-3 2-4 2-5 2-6 A-2-1 A-2-2 Blank 3-1 3-2 Blank 3-3 - 3-6 Deleted A-3-1 - A-3-2 Deleted 4-1 - 4-3 4-4 Blank 5-1 5-2 Blank 6-1 - 6-2 7-1 - 7-2 7-3 7-4 Blank A-7-1 A-7-2 Blank 8-1 - 8-3 8-4 Blank A-8-1 A-8-2 Blank 9-1 9-2 9-3 9-4 A-9-1

A-9-2 Blank 10-1 - 10-2 11-1 - 11-4 A-11-1 A-11-2 Blank 12-1 - 12-2 12-3 12-4 Blank 13-1 13-2 Blank 14-1 14-2 14-3 14-4 - 14-5 14-6 14-7 14-8 14-9 14-10 A-14-1 - A-14-4 15-1 15-2 Blank 16-1 16-2 Blank 16-3 - 16-4 Deleted A-16-1 - A-16-2 Deleted 17-1 - 17-10 17-11 Added 17-12 Blank A-17-1 - A-17-2 A-17-3 Added A-17-4 Blank 18-1 18-2 Blank 19-1 19-2 - 19-3 19-4 Blank 20-1 20-2 20-3 - 20-4 20-5 20-6 Blank A-20-1

A-20-2 Blank 21-1 - 21-2 22-1 22-2 Blank 22-3 - 22-4 Deleted A-22-1 - A-22-2 Deleted ...16 23-1 - 23-13 23-14 Blank A-23-1 - A-23-4 24-1 24-2 24-3 24-4 A-24-1 A-24-2 Blank 25-1 25-2 Blank A-25-1 A-25-2 Blank 26-1 26-2 26-3 26-4 27-1 - 27-4 28-1 - 28-3 Added 28-4 Blank 29-1 - 29-3 Added 29-4 29-5 Added 29-6 Blank 30-1 30-2 Blank 30-3 - 30-8 Deleted A-30-1 - A-30-2 Deleted ...17 31-1 Added 31-2 Blank 32-1 - 32-4 Added 33-1 Added 33-2 Blank

*Zero in this column indicates an original page

LIST OF EFFECTIVE PAGES

Change 18 i

INDEX

Part Number Nomenclature Section

AF75E Vibration Calibration System 29

AG16LM Angle Gage Blocks (Set) 10

AH2700A Capacitance Bridge Standard 33

DS-50 Dosimeter Calibrator 21

D623 Calibration Wedges -10 and -50 (Artifact Proficiency Testing Standards) 31

FDI-BDCL-10 Low Liquid Flow Calibrator 28

FDI-C7009 Gas Flow Standard 27

F1109N/5184 Thermistor Mount 26

F1116 Thermistor Mount 26

MMS Weight Set 6

PCLCE350 Liquid Flow Calibrator 19

PG7601-SYS-AF Pneumatic Pressure Standard 32

SC 1000 Capacitor 2

SR 104 Standard Resistor (10kΩ) 22

TP-122 Polygon 12 Sided 7

U9801 Sound System 18

1 INCH Optical Flat 8

10 INCH Optical Flat 4

100C UV-A Irradiance Meter 20

112-557 Roughness Standard 9

1404A Capacitor 2

142-5S Dosimeter Calibrator 21

16AA Angle Gage Blocks (Set) 10

28 Gage Block Set 3

311AHT Liquid Flow Calibrator 12

311AHT-T Liquid Flow Calibrator 12 ii Change 19

INDEX (Cont.)

Part Number Nomenclature Section

4310AF Standard Resistor 30

453G Photometric Standard 16

478A-3 Bearing Standard 11

5210-540-6935 Optical Flat 4

734A/AF Voltage Standard 23

742A-1 Resistor 24

8 Gage Block Set 3

81624B OPT C01, 81530A Fiber Optic Power Meter 17

9C Liquid Flow Calibrator 12

9152/9154 Standard Cell Enclosure 1

92 Gage Block Set 3

9610/WH2330 Vibration System 14

Change 2 1-1

INSTRUCTIONS AND INFORMATION PERTINENT TO EXCHANGE OF THE STANDARD

DETAILED INSTRUCTION FOR MEASUREMENT OF TEMPERATURE AND CALIBRATION OF THE

9152/9154 STANDARD CELL ENCLOSURE

1 CALIBRATION DESCRIPTION:

Table 1.

Test Instrument (TI) Performance Test Characteristics Specifications Method

Temperature Range: 28 to 35 °C nominal Measured with Temperature Dial Uncertainty:

±0.010 °C of certified value

Voltage Range: 1.017 to 1.019 V Comparison with nominal AFPSL Transfer Standard according Uncertainty: to Statistical Design ±4 ppm of certified value

2 EQUIPMENT REQUIREMENTS:

Minimum Use Calibration Sub- Noun Specifications Equipment Item

2.1 AFPSL Transfer Standard Cell Enclosure Model 9152 ( ) or 9154 ( ), PS-1 power source, portable battery pack, battery charger and RG 58/U cable supplied in fiberglass shipping container.

2.2 DIGITAL Range: 1 V Hewlett-Packard Fluke

VOLTMETER 3455A 8300A

Uncertainty: ±0.05%

2.3 DC VOLTAGE Range: 0 to .999999X Fluke Electro

DIVIDER 720A Scientific Terminal Linearity: 10-4 Industries through 10-7 dials ±0.1 ppm RV722

2.4 NULL Sensitivity: 1 μV full Fluke

DETECTOR 845AB

Input Resistance: 10 MΩ on 100 mV range and below

Input Isolation: 1012 Ω

1-2

2.5 STORAGE Range: 12 V As Available

BATTERY

Accuracy: N/A

2.6 UNSATURATED Range: 1.019 V nominal Weston Eppley

CELL 4 100

2.7 RESISTOR Range: 10 MΩ As Available

Accuracy: ±10%

2.8 DC SUPPLY Range: 1.5 V As Available

Accuracy: N/A

3 PRELIMINARY OPERATIONS:

3.1 Review and become familiar with entire procedure before beginning calibration process.

WARNING

Unless otherwise designated, and prior to beginning the Calibration Process, ensure that all test equipment voltage and/or current outputs are set to zero (0) or turned off, where applicable. Ensure that all equipment switches are set to the proper position before making connections or applying power.

3.2 Ensure all test equipment is connected to appropriate Power and warmed-up.

3.3 UNPACKING INFORMATION AND PRECAUTIONS:

3.3.1 If the AFPSL Transfer Standard is a 9152 ( ), it is supplied with external batteries during transport. Remove the standard from the shipping container and connect its line cord to a 117 VAC receptacle. Disconnect the battery leads from the front panel terminals. Connect a fully charged battery pack for standby power. Recharge the used battery pack immediately using the battery charger packed inside the shipping container. Observe proper polarity when connecting the charger output cables to the battery pack. Charge in the "Fast" position for approximately 24 hours after which the charger must be switched to the "Float" position.

NOTE

The Standard Cell Enclosure 9152 ( ) are shipped under two conditions: 1) "HOT" under battery power to minimize the cells stabilization period and 2) "COLD" without battery power. An enclosure shipped "COLD" will require a minimum of 15 days for warm-up and stabilization. For expediency, most enclosures are shipped "HOT" when transportation methods permit. This T.O. should be followed closely since extreme care is necessary to accomplish a "HOT" shipment.

Change 1 1-3

3.3.2 If the AFPSL Transfer Standard is a 9152 ( ), replace its operating lamps. These lamps were removed prior to shipment to conserve batteries. The lamps are polarized of offset prongs. Use caution when installing.

3.3.3 If the AFPSL Transfer Standard is 9154 ( ), it has an internal battery pack and an internal charger. Remove the standard from the shipping container and connect its line cord to a 117 VAC receptacle. If the AFPSL Transfer Standard is a 9154D, it has an internal battery pack and an external ON-OFF for the battery circuit. Remove the standard from the shipping container, turn the rear panel battery switch to the ON position and connect its line cord to a 117 VAC receptacle. If the battery switch is ON, then this is a "HOT" shipping condition. Check the container for any special instructions that may be sent with the unit. If there are special instructions, please leave them attached to the standard for shipment to next consignee. Check battery condition by depressing "BATT TEST" switch momentarily. For a fully charged battery, the meter will indicate in the green band. Otherwise, the battery should be charged by placing the "BATT CHARGE" switch in the HIGH position for no more than 24 hours. The switch should then be set to LO or trickle charge position.

CAUTION

Batteries should never be left on HIGH or FAST charge for more than 24 hours.

3.3.4 The meter on the front panel of a 9154 ( ) enclosure has two functions in addition to the battery-check function. The meter indicates a Heater On/Off condition by cycling from zero to approximately three quarter scale.

It also indicates an Over Temperature condition by holding a mixed deflection at approximately half scale.

3.3.5 Minimize thermal EMFs by not touching the metal parts of the terminals.

3.3.6 Prevent electro-chemical EMFs by cleaning contacts before start of test. Do not touch bare contacts with hands. Scrape all copper wire before use.

3.3.7 When making cell comparisons, the Null Detector must be used in the battery mode. Disconnect the power cable from the Null Detector to eliminate the possibility of connecting the Null Detector to the power line.

3.3.8 Notify AFPSL whenever in doubt or if delays occur as a result of equipment failure or other unforeseen situations. Complete address and telephone extensions for AFPSL are listed in step 4.3.5.

3.4 PERIODIC COMPARISON OF STANDARD CELLS:

3.4.1 Cells shall be intercompared according to T.O. 33K8-3-1, Chapter 11 at least once every 30 days.

3.4.2 The results of the intercomparisons shall be annotated on a continuous graph (Figure 1 of T.O. 33K8-3-1, Chapter 11) and this graph shall be attached to the Electrical Standards console for review. This graph shall be maintained from the previous Standard Cell enclosure certification to issuance of a new certification.

3.4.3 Other T.O. requiring cell intercomparisons according to (Figure 11-1 of T.O. 33K8-3-1) will meet the requirements of para 3.4 if performed within 30 days of previous intercomparison.

3.5 INSULATION MEASUREMENT:

3.5.1 Connect equipment as shown in Figure 1.

3.5.2 Ground cases of both the AFPSL Transfer Standard and the 9152/9154 to an earth ground.

3.5.3 Set Null Detector to the 1 MILLIVOLT range.

1-4 Change 1

CASE GND

1 2 3

CASE GRD

1 2 3

COMMON

INPUT

NULL DETECTOR

TI AFPSL TRANSFER STANDARDX

Figure 1.

3.5.4 Connect lead X to each of the 6/8 terminals on the 9152/9154 and each of the terminals on the AFPSL Transfer Standard, in turn. This means connect X to each (+) terminal and each (-) terminal on both enclosures.

3.5.5 The Null Detector must not indicate more than ±1 mV for any of the connections.

NOTE

One mV is equivalent to an insulation resistance of 1010 Ω.

3.5.6 If the Null Detector indicates more than ±1 mV for any of the connections, notify AFPSL.

4 CALIBRATION PROCESS:

NOTE

Unless otherwise specified, verify the results of each test and take corrective action whenever the test requirement is not met, before proceeding.

NOTE

Allow AFPSL Transfer Standard to stabilize for 24 hours before proceeding.

4.1 TEMPERATURE MEASUREMENT:

4.1.1 Connect Null Detector INPUT terminals to AFPSL Transfer Standard GALV terminals.

4.1.2 With AFPSL Transfer Standard BRIDGE switch in the OFF position, zero Null Detector on the 3 MICROVOLTS range with the OPR-ZERO switch in the OPR position.

4.1.3 Set BRIDGE switch to ON position and adjust TEMP DEVIATION dial for null on Null Detector. This null should be achieved to within + or - 1 μV. Return BRIDGE switch to OFF.

4.1.4 Record TEMP DEVIATION dial indication to the nearest 0.001°. If the TEMP DEVIATION dial cannot be nulled in step 4.1.3, notify AFPSL.

4.1.5 Connect Null Detector INPUT terminals to 9152/9154 GA terminals.

4.1.6 Apply 1.5 VDC source to 9152 battery 1.5 V terminals. Adjust 9152 TEMPERATURE dial for null indication on Null Detector. Remove 1.5 V source. For the 9154, repeat steps 4.1.1 through 4.1.4 and skip step 4.1.7.

Change 4 1-5

4.1.7 Record 9152R TEMPERATURE dial indication to the nearest 0.001°. If the TEMPERATURE dial cannot be nulled in step 4.1.6, notify AFPSL.

4.2 CELL COMPARISON:

4.2.1 Connect equipment as shown in Figure 2. Label leads VD and ND. VD for Voltage Divider and ND for Null Detector.

4.2.2 Plug PS-1 power source into INPUT terminals of DC Voltage Divider, with the polarity switch in the + position.

VD ND

NOTE; OBSERVE THAT THE RG58/U OUTER CONDUCTOR IS A

GUARD AND NOT A GROUND SHIELD. PLEASE OBSERVE

PROPER CONNECTIONS AS ILLUSTRATED IN FIGURE 2.

IN

INPUT

COMMON

GUARD

CASE GRD

2 1 2 3

CASE GRD

NULL DETECTOR

TI

DC VOLTAGE DIVIDER

RG 58/U CABLE PROVIDED

AFPSL TRANSFER STANDARD

OUT

10 M OHM RESISTOR

UNSATURATED CELL

Figure 2.

Use shielded cables with a solid copper center conductor such as RG-58/U.

Connect the center conductors of these cables directly to the binding posts. Do not use banana plugs or lugs as they will create thermal EMFs.

4.2.3 Set DC Voltage Divider dials to .999999X.

Do not use 720A DC Voltage Divider above .999999X with the 1.0 INPUT terminals.

4.2.4 Connect Digital Voltmeter to DC Voltage Divider OUTPUT terminals and adjust PS-1 power control for

1.0000 V indication.

1-6

4.2.5 Set PS-1 polarity switch to - polarity. Digital Voltmeter reading should be between 0.9995 and 1.0005.

4.2.6 Remove Digital Voltmeter from circuit.

4.2.7 Set DC Voltage Divider dials to 0.0000000.

4.2.8 Connect ND and VD leads to any pair of minus terminals on either cell enclosure and electrically zero the Null Detector on the 3 μV range with the OPR-ZERO switch in the OPR position. It is preferable to operate the Null Detector in the Battery Operate Mode. This calibration should not require use of the Null Detector below the 3 μV range at any time.

NOTE

Do not readjust the zero control throughout the remainder of this procedure.

4.2.9 Connect ND lead to positive polarity terminal of AFPSL Transfer Standard Cell #1, designated S1.

Connect VD lead to positive polarity terminal of 9152/9154 Cell #1, designated R1.

NOTE

The voltage difference measured is that of the ND-connected cell value minus the VD-connected cell value. The setting of the PS-1 power source polarity switch determines the sign of the difference.

4.2.10 Adjust DC Voltage Divider dials and PS-1 polarity switch, if required, for null indication on the Null Detector. A suitable null should be obtainable down to the 3 μV range on the Null Detector. Best results will be obtained if a null between ±0.5 μV can be achieved.

NOTE

Do not allow DC Voltage Divider dials to exceed 0.000999X. If null cannot be obtained, examine the circuit for defects. If no defects are found, disconnect cells and notify AFPSL.

4.2.11 The DC Voltage Divider indication is directly in Volts. Convert to microvolts by placing a decimal point between the sixth and seventh dials and record the number thus obtained preceded by the sign of the PS-1 POLARITY switch setting. This number is the difference between the ND-connected cell and the VD-connected cell in microvolts.

4.2.12 Connect ND and VD leads to each pair of cells listed in Table 2 and repeat steps 4.2.10 and 4.2.11. The 12/16 differences must be taken in the order given in Table 2 without interruption. It may be helpful to remember that the ND lead extends from the Null Detector and the VD lead extends from the Voltage Divider.

NOTE

If the AFPSL Transfer Standard contains more than 3 cells, use only the first 3 unless otherwise directed by AFPSL.

4.2.13 After the data is taken each day take a preliminary look at what it will show. For instance, select D2 and D10 of the (4 cell) scheme in Table 2. These two deltas should be of the same magnitude and opposite polarity.

They should be at least within ±1 μV of the same magnitude. Also check D6 and D13 and others that show as opposites from Table 2. If these values do not match, it usually will indicate a problem with the measurement system and usually not be in the Test Item or one Transfer Standard. Most often this is caused by a faulty Null Detector, faulty connections, or by using wire other than bare solid copper. If this repeatability cannot be achieved, contact AFPSL.

Change 1 1-7

NOTE

At NO time should you discontinue taking data or sending it to AFPSL, unless directed to do so by AFPSL. Any delays in data being received will only delay the recertification process.

Table 2.

ND VD (3 Cell) ND VD (4 Cell)

S1 - R1 = D1 S1 - R1 = D1

R2 - S1 = D2 S3 - R1 = D2

S2 - R2 = D3 S2 - R2 = D3

R3 - S2 = D4 S3 - R2 = D4

S3 - R3 = D5 S1 - R3 = D5

R1 - S3 = D6 S2 - R3 = D6

R1 - S1 = D7 S2 - R4 = D7

S1 - R3 = D8 S3 - R4 = D8

S2 - R1 = D9 R1 - S2 = D9

R2 - S2 = D10 R1 - S3 = D10

S3 - R2 = D11 R2 - S1 = D11

R3 - S3 = D12 R2 - S3 = D12

R3 - S2 = D13

R3 - S3 = D14

R4 - S1 = D15

R4 - S2 = D16

4.3 DATA REPORTING:

4.3.1 Paras 4.1 and 4.2 and their respective ensuing steps are to be repeated once each working day.

Testing should be continued until notification is received from AFPSL to stop. This recertification will NOT be completed until AFPSL has notified the laboratory being certified that the data satisfies all the established criteria.

4.3.2 The data are to be reported in the following format:

NAME OF BASE PMEL:

NAME OF TECHNICIAN TAKING MEASUREMENTS:

TECHNICIANS COMMERCIAL PHONE NUMBER:

AFPSL TRANSFER STANDARD; MODEL NUMBER:

AFPSL TRANSFER STANDARD; SERIAL NUMBER:

AFPSL TRANSFER STANDARD; PAMS ID NUMBER:

AFPSL TRANSFER STANDARD; DATE DUE CALIBRATION:

AFPSL TRANSFER STANDARD; DATE RECEIVED BY PMEL

1-8 Change 1

PS1; SERIAL NUMBER:

TI; MODEL NUMBER:

TI; SERIAL NUMBER:

TI; PAMS ID NUMBER:

TI; DATE LAST CALIBRATED:

TI; DATE DUE CALIBRATION:

CALIBRATION SCHEME (3x3 or 3x4):

MEASUREMENT DATE:

AFPSL TRANSFER STANDARD; TEMPERATURE:

TI; TEMPERATURE:

LABORATORY TEMPERATURE:

LABORATORY HUMIDITY:

TEST START TIME:

D1:

D2:

D3:

D4:

D5:

D6:

D7:

D8:

D9:

D10:

D11:

D12:

D13:

D14:

D15:

D16:

TEST STOP TIME:

NOTE

D1 through D12/D16 are the differences obtained in Table 2. The D1 through D12/D16 data should be in numeric format. (Example: D1: -19.8).

4.3.3 The data should be reported via E-mail as a Microsoft EXCEL attachment, facsimile, electrical message, telephone or by routine mail. E-mail is the preferred method.

Change 7 1-9

NOTE

Please be sure to send the data daily as requested. The data is monitored daily at

AFPSL. Therefore, any delays in receiving this data will cause equivalent delay in the recertification time, particularly when there are problems with the data that has been received to date.

4.3.4 Overseas bases may report by electrical message daily. In event of condition MINIMIZE, send data by air mail.

4.3.5 All data is to go to:

Air Force Primary Standards Laboratory (Type AFPSL Laboratory Contractors Name Here) 813 Irving-Wick Dr. W.

Heath, Ohio 43056-6118

Attn: (POC, AFPSL Contractor Technician Name Here), DSN: 366-5425, COMM.: (740) 788-5425

FAX: COMM.: (740) 788-5404

E-mail: stdcells@(AFPSL Contractor Server Name Here).com

4.3.6 A copy of all data is to be retained by the base PMEL for reference.

4.3.7 The base PMEL is to retain the AFPSL Transfer Standard until AFPSL notifies them to return it to AFPSL or ship it to the next consignee.

4.3.8 The AFPSL will input the daily data received from the laboratory on the standard being calibrated into data reduction software. Determination of the output stability and calibration will be performed by the AFPSL IAW guidelines set forth in T.O. 33K8-5-198-1. Upon completion of the Calibration Process, the AFPSL will issue a Certificate of Calibration and complete a Limited/Special TMDE Certification Label. The AFPSL will notify the laboratory that calibration has been completed and forward these documents to the laboratory. The AFPSL will also instruct the laboratory on where to ship the AFPSL Transfer Standard.

CALIBRATION PERFORMANCE TABLE

Not Required

5 RESHIPMENT OF AFPSL TRANSFER STANDARD CELL ENCLOSURE:

5.1 Leave the AFPSL Transfer Standard connected to the power line until the last possible minute before shipping.

5.2 If the AFPSL Transfer Standard is a 9152 ( ), connect a fully charged battery to the front panel battery terminals. Observe proper polarity. Remove indicator lamps and place in envelope provided. These lamps are removed to conserve the battery. If the AFPSL Transfer Standard is a 9154 ( ), disconnect the power line cord and place the Standard into the shipping container. If the AFPSL Standard is a 9154D, disconnect the power line cord.

Check the operation instructions attached to the Transfer Standard. If AFPSL requests a next shipment COLD, then turn off the rear panel battery switch for a COLD shipment. Otherwise, leave battery ON for a HOT shipment to the next destination.

NOTE

Standard procedure is to send Trans Continental shipments COLD and shipments within a given Continent HOT, if possible.

5.3 The following items must accompany the AFPSL Transfer Standard safely secured within the shipping container when shipped:

Battery Charger (9152 ( ) Only)

Indicator Lamps (9152 ( ) Only)

1-10

Battery Pack (9152 ( ) Only)

PS-1 Voltage Source

All cables that were supplied

5.4 Carefully close shipping container making certain that all hinges and latches are properly engaged.

5.5 The AFPSL Transfer Standard will be shipped only when it will reach its destination within 48 hours.

Preferably all shipments will be made the first Monday following completion of the recertification. It must not arrive at its destination later than noon on Friday.

6 PACKING, PRESERVATION AND MARKING FOR SHIPMENT:

NOTE

The fiberglass shipping container in which the AFPSL Transfer Standard was received is to be re-used. However, if it is damaged, the following data are established for the purpose of packing and preparing it for shipment by the base PMELs and AFPSL.

6.1 Level B, protection from physical and/or mechanical damage, is the only requirement for preservation and packaging for all shipments. The fiberglass shipping container meets this requirement.

6.2 If the fiberglass shipping container is not available, packing will be in corrugated fiberboard container large enough to facilitate four (4) inches of bound fiber cushioning material on all sides between the interior container or barrier and the shipping container.

6.3 Markings will be applied in accordance with Military Standard, MIL-STD 129.

6.4 In addition to standard markings, a DD Form 1387-2 Special Handling Data Certification Label (available in Base Transportation) must be attached to the container bearing the following:

Handle with Care

Temp Limits: 10 to 100 °F

When making a HOT shipment, the following information should be included on shipping and labeling forms:

HOT SHIPMENT WITH NON-CORROSIVE BATTERIES MUST ARRIVE WITHIN 48 HOURS

6.5 The AFPSL Transfer Standard is to be returned to AFPSL by the most expedient means, addressed and marked as follows or is shipped to the next consignee as per instructions as per AFPSL.

Air Force Primary Standards Lab Attn: Lab Support (Type Laboratory Contractors Name Here) 813 Irving-Wick Dr. W, Ste. 4M Heath, Ohio 43056-6118 (Do not post Non-Accountable Material)

6.6 The Standard returned by your PMEL will be calibrated and sent to another PMEL. Please exercise care in handling the Standard in return to AFPSL, or another PMEL, to ensure it is not damaged or impaired for use in the calibration program.

Change 4 2-1

DETAILED INSTRUCTIONS AND INFORMATION PERTINENT TO EXCHANGE OF THE

STANDARD SC 1000 (ELECTRO SCIENTIFIC INDUSTRIES) CAPACITOR

Capacitance Range: 1 nF Compared with Standard 1 nF Capacitor to be Intercomparison Tolerance: ±42.5 ppm Exchanged

Uncertainty or Calibration from AFPSL:

Nominal measurement value ±30 ppm

2.1 OSCILLATOR Range: 10 V, 1 kHz General Radio

Accuracy: N/A

2.1 DETECTOR Range: 1 kHz General Radio

Sensitivity: 100 nV

2.4 PRECISION Range: 1000 pF General Radio

CAPACITANCE 1616

BRIDGE Accuracy: ±0.01% +0.001 pF

3.1 Review and become familiar with entire procedure before beginning Calibration Process.

3.2 When unpacking the Capacitor, care must be taken so as not to damage the corrugated fiberboard shipping container which can be used along with the bound fiber cushioning for return shipment.

3.3 Ensure all test equipment is connected to appropriate Power and warmed-up.

2-2 Change 5

3.4 PRELIMINARY OPERATIONS:

3.4.1 This procedure will be used to compare two SC 1000 (1404A) Capacitors when they are to be exchanged.

3.4.1.1 The SC 1000 (1404A) that comes with the exchange package will be considered the NEW STANDARD and the SC 1000 (1404A) that is to be returned to AFPSL will be considered the OLD STANDARD. Obtain a copy of the Exchange Worksheet from Appendix A (this may also be obtainable from the AFMETCAL METWEB website).

Record the Serial Number and Certified Capacitance Value for each in the appropriate block(s) of the Exchange Worksheet.

3.4.1.2 Allow the Capacitors to stabilize at ambient temperature for at least 24 hours before measurements are taken.

3.5 If not already accomplished, perform steps 3.5.1 through 3.5.21 for the Capacitance Measurement System.

3.5.1 Using BNC patch cords, make the following rear panel connections on the Oscillator, Detector and Precision Capacitance Bridge to assemble the Capacitance Measurement System:

1) Oscillator QUADRATURE and IN-PHASE REFERENCE OUTPUTS to the Detector QUADRATURE and IN-PHASE REFERENCE INPUTS, respectively.

2) Oscillator POWER OUTPUT to the Precision Capacitance Bridge GENERATOR INPUT.

3) Precision Capacitance Bridge DETECTOR OUTPUT to the Detector INPUT SIGNAL.

3.5.2 Connect test equipment to appropriate power source. Set all Power switches to On and allow warm-up as required by the manufacturer.

3.5.3 Set Oscillator controls as follows:

FREQUENCY 1000 Hz

OUTPUT VOLTAGE RANGE 15.0 Volts

OUTPUT ADJUST MAX

3.5.4 Set Detector controls as follows:

FREQUENCY 1000 Hz

TIME CONSTANT 0.1 Seconds

LINE REJECTION Out

COMPRESSION Out

GAIN dB 30 dB

SENSITIVITY Fully CCW (Minimum)

PHASE SHIFT 180°

FINE ADJUST Midrange (Both Controls)

3.5.5 Set Precision Capacitance Bridge controls as follows

EXT MULTIPLIER OFF

Change 4 2-3

TERMINAL SELECTOR CAL

ZERO ADJUST Fully CCW

C MAX Down

CAPACITANCE ** nF *05 pF 000 fF 000.0 aF

CONDUCTANCE 0 µmho 000.0 nmho X 10-6

NOTE: Asterisks above represent a closed shutter on the Precision Capacitance Bridge.

3.5.6 If necessary, reset the Detector GAIN dB for a MAGNITUDE meter indication of 20 to 80.

3.5.7 Tune the Detector to match the Oscillator, as indicated by a peak reading on the Detector MAGNITUDE meter, to the nearest step.

3.5.8 Reset the Precision Capacitance Bridge CAPACITANCE to ** nF *00 pF 000 fF 000.0 aF. Verify the Detector MAGNITUDE meter indication drops to zero.

3.5.9 Reset the Detector GAIN dB to 100 dB. Observe that a noticeable unbalance occurs when the Precision Capacitance Bridge 1 fF lever is moved to 1 or -1.

3.5.10 Set the Precision Capacitance Bridge CONDUCTANCE multiplier to -4.

3.5.11 Switch the Detector GAIN dB to 60 dB. Unbalance the Precision Capacitance Bridge by raising the CAPACITANCE lever switches only so the Detector MAGNITUDE meter indicates about 20. (For the first attempt, use the Precision Capacitance Bridge 10 fF lever.)

3.5.12 With the Detector SENSITIVITY control, set the signal level in the phase-sensitive detectors so that either the IN-PHASE or QUADRATURE meter indicates 25 or more in either direction and both meters read on-scale.

3.5.13 With the Detector PHASE SHIFT controls, bring the QUADRATURE meter indication approximately to zero.

If the range of the Detector larger knob is not sufficient, turn the smaller knob to an adjacent position. The Detector IN-PHASE meter should indicate up-scale, to the right. If necessary, reverse the direction of meter deflection by turning the smaller Detector PHASE SHIFT knob 2 clicks.

3.5.14 Set both Detector FINE ADJUST knobs to mid-position.

3.5.15 Increase the Precision Capacitance Bridge CAPACITANCE unbalance until the Detector MAGNITUDE meter indicates 80 to 99.

3.5.16 Set Detector SENSITIVITY control fully CW (maximum).

3.5.17 Set the Detector PHASE SHIFT for zero indication on the QUADRATURE meter; if zero cannot be obtained with the PHASE SHIFT, use the QUADRATURE FINE ADJUST.

3.5.18 Reset the Precision Capacitance Bridge CAPACITANCE to zero, with the shutters for the 3 greatest decades closed. The Detector MAGNITUDE meter indication should not exceed 1/4 division.

2-4 Change 15

3.5.19 Unbalance the bridge by raising the Precision Capacitance Bridge CONDUCTANCE lever switches for an indication from 20 to 99 on the Detector MAGNITUDE meter. (Try the 1 mmho lever first.) The Detector QUADRATURE meter should read up-scale to the right.

3.5.20 Trim the Detector IN-PHASE FINE ADJUST only to make the adjacent meter read zero or minimum.

3.5.21 Decrease the Oscillator voltage and Detector GAIN dB to minimum.

4 CALIBRATION PROCESS:

Unless otherwise specified, verify the results of each test and take corrective action whenever the test requirement is not met, before proceeding.

4.1 CAPACITOR CALIBRATION:

4.1.1 Set Oscillator controls as follows:

FREQUENCY 1000 Hz

OUTPUT VOLTAGE RANGE 15.0 Volts

OUTPUT ADJUST 10.0 Volts

4.1.2 Set Precision Capacitance Bridge TERMINAL SELECTOR to the 3 Terminal Unknown X1 position.

4.1.3 Tune the Detector to match the Oscillator, as indicated by a peak reading on the Detector MAGNITUDE meter, to the nearest step.

4.1.4 Connect OLD STANDARD Capacitor to the Precision Capacitance Bridge.

4.1.5 Set Precision Capacitance Bridge controls to the certified value of the OLD STANDARD Capacitor as necessary and measure TI Capacitance.

4.1.6 Record Capacitance Value on the Exchange Worksheet in Appendix A.

4.1.7 Replace OLD STANDARD Capacitor with NEW STANDARD Capacitor.

4.1.8 Adjust the Precision Capacitance Bridge for null.

4.1.9 Record measured value of NEW STANDARD on the Exchange Worksheet in Appendix A and compute the two Delta Differences as indicated on the Exchange Worksheet. The two Delta values must agree to within ±42.5 ppm.

4.1.10 If the ±42.5 ppm limits are met, set outputs to minimum and disconnect the Capacitor (no further testing is required) and the OLD STANDARD is to be returned to AFPSL. If you have not already done so, download the Intercomparison Data Sheet from the METWEB on the World Wide Web, fill it out and E-mail it to the address shown below. If your PMEL does not have Internet access, make a photocopy of Appendix A-2, fill it out and mail it to:

Change 17 2-5

Attn: Lab Support The Bionetics Corp Newark Metrology Operations 813 Irving-Wick Dr. W.

Heath, Ohio 43056-6118 E-mail: exchange.standards@afmetcal.af.mil

Commercial FAX: (740) 788-5474

DSN FAX: 366-5474

4.1.11 If the ±42.5 ppm limits are exceeded, notify the AFMETCAL TCM for Capacitance. The TCM names, phone numbers and E-mail addresses can be found by logging into the METWEB. If you have not already done so, download the Intercomparison Data Sheet from the METWEB, fill it out and E-mail it to the address shown in step 4.1.10. If your PMEL does not have Internet access, make a photocopy of Appendix A-2, fill it out and mail it to the address shown in step 4.1.10.

5 PACKAGING, PRESERVING AND MARKING FOR SHIPMENT:

The container in which the Capacitor was received is to be reused. However, if it is damaged, the following data are established for the purpose of packing and preparing the Capacitor for shipment by the base PMELS to AFPSL. This package and pack is suitable for shipment in all modes of transportation except water.

5.1 Level B, protection from physical and/or mechanical damage, is the only requirement for preservation and packaging. The Capacitor will be wrapped in a polyethylene bag.

5.2 Place the Capacitor in a corrugated fiberboard box of appropriate size to facilitate at least two (2) inches of bound fiber cushioning material on each surface. Close container by taping all seams to prevent entry of dust, water, etc.

5.3 The following special markings are required in addition to the standard markings and will be applied in accordance with MIL-STD-129.

5.4 Apply to the container a DD Form 1387-2 bearing instructions that content is AF Base PMEL Exchange Standard.

5.5 Container must bear precautionary handling markings Delicate Instrument - Handle With Care.

5.6 Exchange Standards are to be returned to:

Air Force Primary Standards Lab Attn: Lab Support (Type Laboratory Contractors Name Here) 813 Irving-Wick Dr. W, Ste. 4M Heath, Ohio 43056-6118 (Do not post Non-Accountable Material)

2-6 Change 4

6 HANDLING AND PROCESSING PRECAUTIONS:

6.1 The Standard returned by your PMEL will be calibrated and sent by exchange to another PMEL. Please exercise care in handling the Standard and return to AFPSL, to ensure it is not damaged or impaired for use in the Exchange Program.

Change 5 A-2-1/(A-2-2 Blank)

APPENDIX A-2

Exchange Worksheet for SC1000 (1404A) Capacitor

Date:

Technician:

Base:

Phone Number:

Email:

Table 1: Intercomparison Data of Old SC1000 (1404A) Capacitance Standard and New SC1000 (1404A) Capacitance Standard.

Old SC1000 Capacitor (1404A) New SC1000 (1404A) Capacitor

Serial Number ____________________

Serial Number ____________________

1) Certified Capacitance Value _______________

2) Certified Capacitance Value ________________

3) Recorded Capacitance Value ____________ (4.1.6)

4) Recorded Capacitance Value ____________ (4.1.9)

5) Delta Difference of 1) and 2) ____________ppm

6) Delta Difference of 3) and 4) ____________ppm

Change 16 3-1/(3-2 Blank)

DETAILED INSTRUCTIONS AND INFORMATION PERTINENT TO

EXCHANGE OF THE STANDARD:

#28 PMEL GAGE BLOCK SET PT/MAP

#8 PMEL GAGE BLOCK SET PT/MAP

#92 PMEL GAGE BLOCK SET PT/MAP

The AFMETCAL Proficiency Testing Web Application must be utilized to obtain the required Exchange Standard intercomparison instructions and electronic data submission templates and supercede any instructions presently contained in published procedure. This application is accessed via METWEB (https://metweb.afmetcal.af.mil) from menu Engineering Home - Proficiency Testing.

Upon successful completion of the intercomparison measurement process, the Air Force Primary Standard Laboratory (AFPSL) Certificate of Calibration for this PMEL Exchange Standard will be provided for download through the Proficiency Testing Web Application.

4-1

DETAILED INSTRUCTIONS AND INFORMATION PERTINENT TO EXCHANGE

OF THE STANDARD 10 INCH PMEL OPTICAL FLAT, 5210-540-6953

1 UNPACKING:

1.1 When unpacking the Optical Flat, care must be taken not to damage the shipping container which must be used, along with the cushioning material, for return of Optical Flat requiring Calibration.

1.1.2 Examine outside of package for obvious shipping damage.

Flatness Range: 10 inch diameter N/A

Uncertainty: ±2 min flatness

2.1 ETHYL ALCOHOL Range: N/A Local Purchase

(200 PROOF) 6505-00-105-0000

Uncertainty: N/A

2.2 KIMWIPES Range: N/A Local Purchase

7920-00-965-1709 Uncertainty: N/A

3.1 Review and become familiar with entire procedure before beginning calibration process.

Alcohol is a flammable liquid and may be ignited by heat, sparks, or flames. Vapors may travel to a source of ignition and flashback. Alcohol burns with an almost invisible flame.

4-2

Alcohol is an eye and skin irritant. Use protective equipment (chemical splash goggles and gloves) where potential of splash and skin contact may occur. Failure to do so may result in injury. If eye contact should occur, flush well with water and seek immediate medical attention.

3.2 Make sure wooden container is taped securely closed.

3.3 Examine outside of Optical Flat box for damage, broken or damaged hinges, latches or wood.

3.4 Check set serial number against calibration sheet.

3.5 Carefully remove flat from box and make visual check of flat for scratches, nicks or grit.

4 INTERCOMPARISON PROCESS:

Comparison equipment is not available to perform a comparison check.

4.1 EVALUATION OF DATA:

4.1.1 Flats with scratches or nicks on the working surfaces which in the opinion of the NCOIC of the PMEL will adversely affect their work, shall be returned to AFPSL.

4.1.2 It should be noted that minute surface scratches will not necessarily adversely effect the use the flats.

4.1.3 All cases of major damage to wooden flat case itself shall also be reported to AFPSL.

4.1.4 Cases which arrive containing foreign material such as grit or dirt, capable of damaging flats shall be reported to

AFPSL.

This is a very delicate instrument. Extreme care must be exercised in the preservation, packaging, packing, shipping and handling, so that it is not damaged, whereby it would lose its serviceability and/or calibration.

5.1 The Standard Optical Flat is shipped from AFPSL in a reusable container, containing at least

(1) one inch of cellulose cushioning material all around.

5.2 Method III of MIL-P-116, which provides for mechanical and/or physical protection against damage, is the only requirement for preservation and packaging for all shipments of the Optical Flat to PMELs and AFPSL from points within the CONUS.

5.3 Method IA14 of MIL-P-116, which provides a water vapor proof enclosure sealed, is required for all shipments to or from overseas PMELs and AFPSL.

4-3/(4-4 Blank)

5.4 Packing will be in a corrugated fiberboard container large enough to facilitate a minimum of (1) one inch of cellulose cushioning material between the wrapped case and the shipping container on all surfaces.

5.5 Marking will be applied in accordance with Military Standard, MIL-STD-129.

NOTE

Container must also be marked "AF BASE PMEL EXCHANGE STANDARD."

5.6 The Optical Flat to be returned to AFPSL marked (Do Not Post-Non-Accountable Material).

5-1/(5-2 Blank)

DETAILED INSTRUCTIONS AND INFORMATION PERTINENT TO EXCHANGE

OF THE STANDARD

CLASS S-1 AVOIRDUPOIS WEIGHTS-FSN 6670-537-0545, IDENTIFICATION #TS-111

THIS SECTION DELETED

6-1

OF THE STANDARD MMS WEIGHT SET

1.1 When unpacking the Weight Set, care must be taken not to damage the shipping container which must be used, along with the cushioning material for return of Weight Set requiring Calibration.

1.1.1 When unpacking the Weight Set, examine the packages for any evidence of damage or rough handling.

Mass Range: 1 mg to 20 kg N/A

Uncertainty: AFPSL Charted Value

2.1 BRUSH CAMEL HAIR Range: N/A As Available

Uncertainty: N/A

2.2 FIBER WIPES Range: N/A FSN

7920-634-1745 Uncertainty: N/A

3 PRELIMINARY OPERATIONS:

3.1 Review and become familiar with entire procedure before beginning calibration process.

3.2 Handle the weights Only with the tweezers or Fiber Wipes to prevent contamination from the hands.

3.3 Brush the weights thoroughly to be certain they are free of dirt, dust, or other foreign matter.

3.4 INSPECTION PROCEDURE:

3.4.1 Inspect all of the STANDARD weights for damage such as abrasions, nicks, chips, cracks, pits or oxidation.

3.4.2 If the STANDARD weights show no signs of damage, they can be assumed to be in calibration to Charted Value tolerance unless otherwise indicated on the Certification Label accompanying the exchange shipment.

6-2

4 EVALUATION OF DATA:

4.1 If visual examination shows signs of damage to any of the STANDARD weights, do not proceed with this T.O.

Advise AFPSL by message, giving details of damage or discrepancies found.

preservation, packaging, packing, shipping and handling, so that it is not damaged, whereby it would lose its serviceability and/or calibration.

5.1 The Standard Weight Set is shipped from AFPSL in a reusable shipping container; containing at least two

(2) inches of cushioning material all around.

5.2 Method III of MIL-P-116, which provides for mechanical and/or physical protection against damage, is the only requirement for preservation and packaging for all shipments of the Weight Set to PMELs and AFPSL from points within the CONUS.

5.3 Method IA-14, of MIL-P-116, which provides a water vapor proof enclosure sealed, is required for all shipments to or from overseas PMELS and AFPSL.

5.4 Packing will be in a corrugated fiberboard container large enough to facilitate two (2) inches of bound fiber cushioning material between the barrier and the shipping container on all surfaces.

5.5 Marking will be applied in accordance with Military Standard, MIL-STD-129.

NOTE

5.6 The Weight Set to be returned to AFPSL marked (Do Not Post-Non-Accountable Material).

7-1

DETAILED INSTRUCTIONS AND INFORMATION

PERTINENT TO EXCHANGE OF THE STANDARD

TP-122 POLYGON, 12-SIDED

1.1 When unpacking the Polygon, care must be taken not to damage the shipping container which must be used, along with the cushioning material, for return of Polygon requiring Calibration.

1.1.1 Cut tape around top of fiberboard container and open flaps.

1.1.2 Remove packaged item from container.

1.1.3 Cut barrier bag near heat seal, being careful not to damage it so it can be reused.

1.1.4 Remove inner container from barrier bag and open by cutting tape holding top flaps together.

1.1.5 Unpacking instructions for the Polygon preserved, packaged, and packed level C are the same as level A except there is no barrier bag to be removed.

Standard Performance Comparison

Angle Range: 0 to 360° Intercomparison (In 30° increments) between the Standard and Unknown Polygons Intercomparison Tolerance: ±1 sec Uncertainty of Calibration from AFPSL: ±0.25 sec

2.1 INDEX TABLE Range: 0 to 360° AG Davis

CD-12

Uncertainty: ±1 sec

2.2 AUTOCOLLIMATOR Range: 0 to 60 sec Rank Taylor Hobson

142-74 Uncertainty: ±0.5 sec

3 PRELIMINARY OPERATIONS:

3.1 Review and become familiar with entire procedure before beginning calibration process.

3.2 The Polygon received in the exchange package will hereinafter be called the STANDARD Polygon and the Polygon to be returned will hereinafter be called the UNKNOWN Polygon.

7-2

3.3 Thoroughly inspect the STANDARD Polygon after it has been removed from its packing case to ascertain any damage in shipment or any loose parts.

3.4 Check STANDARD Polygon serial number against shipping papers or calibration certificates furnished with the Polygon.

3.5 Inspect the 12 reflecting sides of the STANDARD Polygon to verify that they are free of scratches, cracks, or fingerprints.

3.6 Visually check the quartz block of the STANDARD Polygon to verify that it is not cracked or broken.

3.7 If checks per steps 3.3 through 3.6 are satisfactory, proceed with this exchange procedure. If not satisfactory, hold both the STANDARD and UNKNOWN Polygons and advise AFPSL by message giving details of discrepancies found.

4 INTERCOMPARISON PROCEDURE:

4.1 If an intercomparison method accurate to 1 second or better is available, an intercomparison between the STANDARD and UNKNOWN Polygons will be made. If no appropriate angle intercomparison method is available, omit section 4 of this procedure.

4.1.1 Corresponding angles of the STANDARD and UNKNOWN Polygons will be compared and the deviations between the two will be recorded. If the deviations exceed 10 seconds of arc, hold both the STANDARD and UNKNOWN Polygons and advise AFMETCAL/MLLE by message, giving details of discrepancies found. The Technical Content Manager’s name and phone number can be found by logging into the Metrology Web Information Server (METWEB) on the World Wide Web.

4.1.2 Fasten the UNKNOWN Polygon on the Index Table. Center the axis of the Polygon to the Index Table’s axis within 0.05 inches. Set the Index Table to 0 (zero) degrees and align the Autocollimator to read the first face of the Polygon. Ensure the Autocollimator beam is centered on the Polygon face within 0.25 inches. Adjust the Autocollimator position to read near zero (within 5 sec) in both X and Y axis.

4.1.3 Record the Autocollimator X-axis reading for face 1 (sometimes called 0 degree face) of the Polygon.

4.1.4 Position the Index Table so that the next face of the Polygon is in view of the Autocollimator. Ensure that the Index Table base does not move during the positioning and that the Autocollimator is not disturbed. Record the Autocollimator X-axis reading.

4.1.5 Continue in this manner until all faces of the UNKNOWN Polygon have been read and the X-axis deviations recorded.

4.1.6 Re-read the initial face of the Polygon and ensure that this reading repeats the initial reading within 0.5 seconds. If not, repeat steps 4.1.3 through 4.1.6.

4.1.7 Algebraically subtract the values recorded for the initial face of the Polygon from that of each of the other readings and record the differences.

4.1.8 Repeat steps 4.1.2 through 4.1.7 substituting the STANDARD Polygon for the UNKNOWN Polygon.

4.1.9 If the difference deviation recorded in step 4.1.7 between the STANDARD and UNKNOWN Polygons do not exceed 10 seconds, continue with this procedure.

Change 17 7-3/(7-4 Blank)

4.2 EVALUATION OF DATA:

4.2.1 Download the Intercomparison Data Sheet from the Metrology Web Information Server (METWEB) on the World Wide Web and fill it out. If your PMEL does not have Internet access, make a photocopy of Appendix A-7 and fill it out. Two copies of all data and calculations pertaining to this procedure are to be forwarded to AFMETCAL.

One copy is to be enclosed in the exchange package in which the UNKNOWN Polygon is returned to the Laboratory Contractor. The second copy is to be mailed to:

Attn: Lab Support The Bionetics Corp Newark Metrology Operations 813 Irving-Wick Dr. W.

Heath, Ohio 43056-6118 E-mail: exchange.standards@afmetcal.af.mil

Commercial FAX: (740) 788-5474

DSN FAX: 366-5474

This is a very delicate instrument, extreme care must be exercised in the preservation, packaging, packing, shipping and handling so that it is not

5.1 The STANDARD Polygon is shipped from AFPSL in a reusable container, containing at least two

(2) inches of cushioning material all around.

5.2 Method III of MIL-P-116, which provides for mechanical and/or physical protection against damage, is the only requirement for preservation and packaging for all shipments of the Polygon to PMELs and AFPSL from points within the CONUS.

5.3 Method IA14 of MIL-P-116, which provides a water vapor proof enclosure sealed, is required for all shipments to or from overseas PMELs and AFPSL.

5.4 Packing will be in a corrugated fiberboard container large enough to facilitate two (2) inches of bound fiber cushioning material between the barrier and the shipping container on all surfaces.

5.5 Marking will be applied in accordance with Military Standard MIL-STD-129.

NOTE

Container must also be marked AF BASE PMEL EXCHANGE STANDARDS.

6.6 The Polygon to be returned to AFPSL marked Do Not Post-Non-Accountable Material.

Change 9 A-7-1/(A-7-2 Blank)

APPENDIX A-7

Exchange Worksheet for MLLE----Polygon

Date ________________ Technician ________________ Phone Number ________________ Email ________________ Base ________________

Table A-7-1: Data UNKNOWN and STANDARD MLLE-Polygons

UNKNOWN POLYGON STANDARD POLYGON

Model Number: Model Number:

Serial Number: Serial Number:

Manufacturer: Manufacturer:

Difference from initial

Face # Reading

0.0

Difference from initialFace # Reading

0.0

Difference

0.0 from Unknown

The difference in the angle deviation from the initial position between the Unknown and the STANDARD Polygons must be less than 10 arc seconds.

Change 2 8-1

DETAILED INSTRUCTIONS AND INFORMATION PERTINENT TO

EXCHANGE OF THE STANDARD OPTICAL FLAT, 1 INCH

1.1 When unpacking the Optical Flats, care must be taken not to damage the shipping container which must be used, along with the cushioning material, for return of Optical Flats requiring Calibration.

1.1.1 Unpacking instructions for 1 inch Optical Flats in manufacturer's storage case, preserved level A and packed level B or C.

1.1.2 Cut tape around top flaps of fiberboard box and open flaps.

1.1.3 Remove bagged storage case.

1.1.4 Cut barrier open as close to heat seal as possible being careful not to damage barrier so it can be reused.

1.1.5 Remove wrapping from manufacturer's case.

2 INSPECTION:

2.1 Review and become familiar with entire procedure before beginning calibration process.

2.2 Make sure wooden container is taped securely closed.

2.3 Examine outside of Optical Flat case for damage, broken or damaged hinges, latches or wood.

2.4 Carefully remove Optical Flats from box and make visual check of Optical Flats for scratches, nicks or grit.

2.5 Check set serial number against calibration sheet.

2.6 Optical Flats with scratches or nicks on the working surfaces which in the opinion of the NCIOC of the PMEL will adversely affect their work, shall be returned to AFPSL. (It should be remembered that Optical Flats with minor scratches can be used effectively).

2.7 Cases which arrive containing foreign material such as grit or dirt, capable of damaging Optical Flats, shall be reported to AFPSL.

2.8 All cases of major damage to wooden case itself shall also be reported to AFPSL.

3 PACKAGING, PRESERVING AND MARKING FOR SHIPMENT:

preservation, packaging packing, shipping and handling, so that it is not

3.1 The STANDARD Optical Flat is shipped from AFPSL in a reusable container, containing at least one

(1) inch of cellulose cushioning material between the wrapped and/or bagged case and the shipping container.

8-2 Change 2

3.2 Shipments overseas will be preserved level A by Method IA of MIL-P-116, and packed level B. Preservation and packing will be accomplished by reversing the procedure in section 1.0, using care to expel all possible air from the barrier before heat sealing.

3.3 Shipments within the CONUS will be preserved level C by use of Method III of MIL-P-116,…