FLUKE 332A 电路图.pdf

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1、PIN NO: 009048-004 TB 9-4931-383-50 Change 4 DEPARTMENT OF THE ARMY TECHNICAL BULLETIN CALIBRATION PROCEDURE FOR VOLTAGE STANDARAD, JOHN FLUKE, MODELS 332A, 332B, AND 332B/AF Headquarters, Department of the Army, Washington, DC 9 March 1988 TB 9-4931-383-50, 26 July 1976, is changed as follows: 1. R

2、emove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical bar in the margin of the page. Remove pagesInsert pages 3 through 83 through 8 11 and 1211 and 12 2. File this change sheet in front of the publication for reference purposes. By Order of the

3、Secretary of the Army: CARL E. VUONO General, United States Army Chief of Staff Official: R. L. DILWORTH Brigadier General, United States Army The Adjutant General Distribution: To be distributed in accordance with Std. IDS No. RLC-1500, 17 Jun 85. RadioFans.CN 收音机爱 好者资料库 PIN NO: 009048-003 TB 9-493

4、1-383-50 Change 3 DEPARTMENT OF THE ARMY TECHNICAL BULLETIN CALIBRATION PROCEDURE FOR VOLTAGE STANDARAD, JOHN FLUKE, MODELS 332A, 332B, AND 332B/AF Headquarters, Department of the Army, Washington, DC 18 February 1983 TB 9-4931-383-50, 26 July 1976, is changed as follows: 1. Remove old pages and ins

5、ert new pages as indicated below. New or changed material is indicated by a vertical bar in the margin of the page. Remove pagesInsert pages 19 and 2019 and 20 2. File this change sheet in front of the publication for reference purposes. By Order of the Secretary of the Army: E. C. MEYER General, Un

6、ited States Army Chief of Staff Official: ROBERT M. JOYCE Major General, United States Army The Adjutant General Distribution: To be distributed in accordance with Std. IDS. No. RLC-1500, 9 September 1982. RadioFans.CN 收音机爱 好者资料库 This is a reprint, including Changes 1 and 2. _ *This bulletin superse

7、des TB 9-4931-383-50, 31 January 75, including all changes. *TB 9-4931-383-50 DEPARTMENT OF THE ARMY TECHNICAL BULLETIN CALIBRATION PROCEDURE FOR VOLTAGE STANDARD, JOHN FLUKE MODELS 332A, 332B, AND 332B/AF Headquarters, Department of the Army, Washington, DC 26 July 1976 REPORTING OF ERRORS You can

8、help improve this publication by calling attention to errors and by recommending improvements and stating your reasons for the recommendations. Your letter or DA Form 2028, Recommended Changes to Publications, should be mailed directly to Commander, U.S. Army Aviation and Missile Command, ATTN: AMSA

9、M-TMD-EP, Redstone Arsenal, A1 35898-5400. You may also contact this office electronically. E-mail address is tmde- eredstone.army.mil. FAX to DSN 788-2313 (commercial 256-842-2313). A reply will be furnished directly to you. ParagraphPage SECTIONI.IDENTIFICATION AND DESCRIPTION Test instrument iden

10、tification.12 Calibration data card, DA Form 2416.22 Calibration description.32 II.EQUIPMENT REQUIREMENTS Equipment required .43 Accessories required.53 III.CALIBRATION PROCESS FOR MODEL 332A Preliminary instructions .64 Regulation.77 Zero voltage .89 Linearity.910 Output accuracy and tracking.1012

11、Panel meter, voltage trip, and current limit.1116 Power supply .1217 Final procedure.1318 RadioFans.CN 收音机爱 好者资料库 TB 9-4931-383-50 2 IV.CALIBRATION PROCESS FOR MODELS 332B AND 332B/AF Preliminary instructions . 1418 Regulation. 1521 Zero voltage . 1622 Linearity (model 332B). 1723 Linearity (model 3

12、32B/AB). 1826 Output accuracy and tracking. 1927 Panel meter (voltage). 2030 Voltage trip. 2131 Panel meter (current) and current limit. 2232 Power supply (model 332B). 2333 Power supply (model 332B/AF) . 2434 Final procedure. 2534 SECTION I IDENTIFICATION AND DESCRIPTION 1. Test Instrument Identifi

13、cation. This bulletin provides instructions for the calibration of Voltage Standard, John Fluke Models 332A, 332B, and 332B/AF. The manufacturers instruction manuals were used as the prime data source in compiling these instructions. The equipment being calibrated will be referred to as the TI (test

14、 instrument) throughout this bulletin. a. Model Variations. On model 332A with serial numbers 123 through 332, the X position of voltage dials 2 through 7 is labeled 10. b. Time and Technique. The time required for this calibration is approximately 4 hours, using the dc and low frequency technique.

15、2. Calibration Data Card, DA Form 2416 a. Forms, records, and reports required for calibration personnel at all levels are prescribed by TM 38-750. DA Form 2416 must be annotated in accordance with TM 38-750 for each calibration performed. b. Adjustments to be reported on DA Form 2416 are designated

16、 (R) at the end of the sentence in which they appear. When adjustments are in tables, the (R) will follow the designated adjustment. Report only those adjustments made and designated with (R). 3. Calibration Description. TI parameters and performance specifications which pertain to this calibration

17、are listed in table 1. TB 9-4931-383-50 3 Table 1. Calibration Description Test Instrument ParametersPerformance Specifications1 Voltage range10-v range; 0 to 11.111110 v (1-v steps) 100-v range; 0 to 111.11110 v (10-v steps) 1000-v range; 0 to 1111.1110 v (100-v steps) Resolution Accuracy0.1 ppm of

18、 range (1 v max) 10-v range; (0.003% of setting +10 v) 100-v range; (0.003% of setting +20 v) 1000-v range; (0.003% of setting +40 v) Over-voltage protectionAutomatically disables output voltage if level exceeds selected value (10 to 110% of selected range). Output current0 to 50 ma (any voltage set

19、ting) Over-current protectionAutomatically limits output current to present level; between 1 and 60 ma. Line and load regulation0.0005% of setting or 25 v for 10% change in line voltage from nominal. 1The specifications for models 332B and 332B/AF have been derated to the same as model 332A which ar

20、e, reflected in this calibration description. SECTION II EQUIPMENT REQUIREMENTS 4. Equipment Required. Table 2 identifies the specific equipment used in this calibration procedure. This equipment is issued with secondary reference standards calibration set NSN 4931-00-621-7878, and is to be used in

21、performing this procedure. Alternate items may be used by the calibrating activity when the equipment listed in table 2 is not available. The items selected must be verified to perform satisfactorily prior to use and must bear evidence of current calibration. The equipment must meet or exceed the mi

22、nimum use specifications listed in table 2. When accuracies listed in table 2 provide a four-to-one accuracy ratio between the standard and TI. Where the four-to-one ratio cannot be met, the accuracy of the equipment selected is shown in parenthesis. 5. Accessories Required. The accessories listed i

23、n table 3 are issued as indicated in paragraph 4 above and are to be used in this calibration procedure. When necessary, these items may be substituted by equivalent items unless specifically prohibited. Table 2. Minimum Specifications of Equipment Required ItemCommon NameMinimum Use Specifications

24、Manufacturer, Model, and Part Number A1AUTOTRANSFORMERRange: 105 to 125 vac Accuracy: 1% General Radio, Model WI0MT3AS3 (7910809) A2DC TRANSFER STANDARD Range: 1 and 10 vdc Accuracy: 0.0005% when transferred from saturated cells John Fluke, Model 730A/AB (MIS- 10358, type 2) A3DECADE RESISTORRange:

25、20 to 200 ohms Accuracy: l Biddle-Gray, Model 601147-1 (7910328) A4NULL DETECTORRange: 0 to 1000 vdc Accuracy: N/A John Fluke, Model 845AB (8205517) TB 9-4931-383-50 4 Table 2. Minimum Specifications of Equipment Required - Continued. ItemCommon name Minimum use specifications Manufacturer, Model, a

26、nd Part Number A5OPERATING VOLTAGE SOURCE. Range: 999 to 1000 vdc Stability: 0.0015% of setting +20v John Fluke, Model 332A (7911393) or 332B/AF (6625- 150-6994) A6STANDARD CELLTest report specificationsGuildline, Model 9154B (MIS- 10364) A7VOLTAGE DIVIDERRange: 0 to 1.000000 Accuracy: 0.25 ppm FS E

27、SI, Model RV726 (MIS-10295) A8VOLTAGE REGULATORRange: 115 vac Accuracy: 0.75% Superior Electric Co., Model EM 4102 (8616523) A9VOLTMETERRange: 6 to 16 vdc Accuracy: 0.0025% John Fluke, Model 887 ABAN (P/0 MIS-10216) Table 3. Accessories Required ItemCommon NameDescription And Part Number B1SENSITIVI

28、TY SWITCHSensitivity and reversing switch; galvanometer key (7913207) B2WIREShielded pair, No. 18 AWG, solid copper conductor (MIS-10312) B3ADAPTERPower cord adapter, T210 (7912356) B4LEAD 118-in., spade lug terminations (black) (7911292- 13) 1Four required. SECTION III CALIBRATION PROCESS FOR MODEL

29、 332A 6. Preliminary Instructions a. The instructions outlined in this paragraph are preliminary to the calibration process. Personnel should become familiar with the applicable sections before beginning the calibration. b. Items of equipment used in this procedure are referenced within the text by

30、common name and item identification number as listed in tables 2 and 3. For the identification of equipment referenced by item numbers prefixed with A, see table 2 and for prefix B, see table 3. WARNING HIGH VOLTAGE is used during the performance of this calibration. DEATH ON CONTACT may result if p

31、ersonnel fail to observe safety precautions. NOTE Unless otherwise specified, verify the results of each test and take corrective action whenever the test requirement is not met before continuing with the calibration. TB 9-4931-383-50 5 NOTE Unless otherwise specified, all controls and control setti

32、ngs refer to the TI. c. When indications specified in paragraph 10 are not within tolerance, perform the power supply check prior to making adjustments. After adjustments are made, repeat paragraph 10. Do not perform power supply check if all other parameters are within tolerance. d. Position TI con

33、trols as listed in (1) through (5) below: (1) VOLTAGE RANGE switch to 10. (2) Voltage dials to 1.000000. (3) METER switch to VOLTAGE. (4) VOLTAGE TRIP control fully clockwise. (5) CURRENT LIMIT control fully clockwise. e. Connect TI to autotransformer (A1) and leave connected throughout procedure. N

34、OTE The sensitivity switch (B1) has been included in equipment setup for safety and to allow reversal of connections to null detector (A4). Detailed operation of the switch is not included in step-by-step procedure. f.Connect autotransformer to a 115-volt ac source and adjust for a 115-volt output.

35、g. Turn POWER switch to STANDBY/RESET and allow at least 1 hour for warm-up. h. Connect operating voltage source (A5) to voltage regulator (A8), set its POWER switch to STANDBY/ RESET, and allow to warm-up until called for. i.It is necessary to know actual value of 1.018 +E output of dc transfer sta

36、ndard (A2) to complete this calibration. If calibration of dc transfer standard is no more than 10 days old, the value recorded at time of calibration is sufficient. If calibration is more than 10 days old, determine the value by performing (1) through (11) below: (1) Connect equipment as shown in f

37、igure 1. TB 9-4931-383-50 6 Figure 1. Measurement of 1.018 + E output of dc transfer standard - equipment setup. NOTE When adjusting for a null indication on null detector, always start on highest range of null detector and proceed down range to required sensitivity. When reading is complete, return

38、 null detector to high range. (2) Adjust dc transfer standard (A2) for 1.1018 + E mean output and set E dials to last three digits of standard cell (A6) certificate value. TB 9-4931-383-50 7 (3) Set voltage divider (A7) to one-tenth of value of dc transfer standard setting. (4) Adjust TI for a nomin

39、al 10-volt output and set its POWER switch to ON. (5) Adjust TI voltage dials for a null indication on null detector (A4). Do not change TI voltage dials until instructed. (6) Set TI POWER switch to STANDBY/RESET. (7) Replace dc transfer standard with standard cell in equipment setup. (8) Set TI POW

40、ER switch to ON. (9) Adjust voltage divider for a null indication on null detector. Record the voltage divider indication. (10) Set TI POWER switch to STANDBY/RESET. (11) Compute the actual value of the dc transfer standard output as follows. If in step (9) above the voltage divider setting was incr

41、eased, subtract the amount of change multiplied by 10 from the standard cell value. If the setting was decrease add the amount of change multiplied by 10 to the standard cell value. Record the value for future use. 7. Regulation a. Performance Check (1) Connect equipment as shown in figure 2. (2) Se

42、t decade resistor (A3) to 20 ohms. (3) Set voltage divider (A7) to .999999X. (4) Adjust dc transfer standard (A2) for a 1-volt mean output. (5) Adjust TI voltage dials for a nominal 1-volt output and turn POWER switch to ON. (6) Adjust TI voltage dials for a null indication on null detector (A4). Re

43、cord voltage dial indication. (7) Adjust autotransformer (A1) output to 105 volts and wait 1 minute. (8) Adjust TI voltage dials for a null indication on null detector. TB 9-4931-383-50 8 Figure 2. Regulation - equipment setup. TB 9-4931-383-50 9 (9) TI voltage dials will indicate within 25 microvol

44、ts of value recorded in (6) above. (10) Adjust autotransformer output to 125 volts and wait 1 minute. (11) Adjust TI voltage dials for a null indication on null detector. (12) TI voltage dials will indicate within 25 microvolts of value recorded in (6) above. (13) Adjust autotransformer output to 11

45、5 volts. (14) Remove decade resistor from equipment setup and wait 1 minute. (15) Adjust TI voltage dials for a null indication on null detector. (16) TI voltage dials will indicate within 25 microvolts of value recorded in (6) above. (17) Turn POWER switch to STANDBY/RESET. b. Adjustments. No adjus

46、tments can be made. 8. Zero Voltage a. Performance Check (1) Set dc transfer standard (A2) for (supply number 1) E output and E control to 000. (2) Position TI controls as listed in (a) through (c) below: (a) VOLTAGE RANGE switch to 1000. (b) Voltage dials to 0000000. (c)POWER switch to ON. (3) Adjust E control of dc transfer standard for a null indication on null detector (A4). (4) If E control of dc transfer standard does not indicate 040 microvolts, perform b(1) below. NOTE If reading is negative, rever