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56-101-00184

00185 Rev. I

CH. 3

September 24, 2014

Page 26 of 56

9. MACHMETER TEST

A. Test Procedure

Using the methods described in 8. COMBINED

PITOT

(AIRSPEED)

STATIC

(ALTITUDE) TEST, set an altitude (in feet) listed in the following table. Set the
corresponding airspeed (in knots). Verify t`hat the MACH value obtained is the same as
listed in the table for the settings. (For example, an altitude set to

10k

with airspeed of

277

kts

would give a MACH reading of .50.)

Table 3

Airspeed vs. MACH Number Test Table

MACH NUMBER

.50 .60 .70 .75 .80 .82 .85 .90

Altitude

(In feet)

Airspeed

(In kts)

277 334 391 420 449 --- --- ---

10k

247 298 350 376 403 414 429 ---

15k

228 275 324 348 373 383 398 424

20k

205 248 292 315 338 347 361 384

25k

188 228 269 289 311 319 332 354

29k

172 207 246 265 285 292 304 324

33k

157 190 224 242 260 267 278 297

37k

142 173 204 220 237 243 253 277

41k

--- 157 186 201 216 222 231 246

45k

--- 143 169 183 196 202 210 225

49k

--- --- 161 174 187 193 201 214

51k

Содержание 1811GA Series

Страница 1: ...184 SERIES M N 1811GA P N 101 00185 SERIES Doc P N 56 101 00184 00185 Revision I September 24 2014 ____________________________________ BARFIELD INC Corporate Headquarters 4101 Northwest 29th Street M...

Страница 2: ......

Страница 3: ...use this equipment for any other purpose than that stated INPUT POWER 1811HA MODEL ONLY 100 240VAC 50 60 Hz 60W FUSE PROTECTION Operating at 120VAC 2 fuses 5mm x 20mm 1A Operating at 240VAC 2 fuses 5...

Страница 4: ...error found in this manual Inquiries should include specific questions and reference the publication title number chapter page figure paragraph and effective date Please send comments to TECHNICAL CU...

Страница 5: ...return the enclosed OWNER WARRANTY REGISTRATION CARD to Barfield in order to validate the warranty and to ensure that you will receive updated information when published You MUST have your name and ad...

Страница 6: ...the Static Pretest procedures Section 1 3 Page 5 1 Open Crossbleed Valve 8 fully E 260 00746 December 17 2008 A numeric code was added at the end of the former P Ns to identify the instruments configu...

Страница 7: ...ises its 1811 series Test Sets as general purpose trouble shooting testers With respect to compliance with FAR 91 411 we feel that the customer should first be aware of all requirements for performing...

Страница 8: ...air facilities worldwide ensuring that this equipment will be serviced using proper procedures and certified instruments A Return Maintenance Authorization RMA number will be assigned during this call...

Страница 9: ...BREAKDOWN 1 2 INFORMATION PROVIDED WITH THE UNIT 1 3 RECERTIFICATION 3 CHAPTER 1 GENERAL INFORMATION 1 TEST SETS DESCRIPTION 5 2 PHYSICAL DESCRIPTION A Carrying Case 6 B Part Number Variations 6 C Fro...

Страница 10: ...Instrument Calibration Correction 18 6 PITOT SYSTEM TEST A Pitot System Connection 18 B Pitot Leak Test 18 7 STATIC SYSTEM TEST A Static System Connection 19 B Static Leak Test for Non Pressurized Air...

Страница 11: ...Test 31 C Pressure Vent and Crossbleed Valve Test 31 D Vacuum Vent Test 32 E Vertical Speed Valve Test 32 F Vacuum Vent Valve Test 32 2 RESETTING NEEDLE VALVE POSITIVE STOP 33 CHAPTER 5 INSPECTION RE...

Страница 12: ...Figure 5 Power Entry Module 9 Figure 6 1811GA Pneumatic Schematic Diagram 14 Figure 7 1811HA Pneumatic Schematic Diagram 15 Table 1 Code Numbers for Available Indicators 6 Table 2 1811GA HA Front Pan...

Страница 13: ...ROVIDED WITH THE UNIT Besides this User Instruction Manual the 1811HA GA Test Set is provided with the items described below A An identification label similar to Figure 1 and located on the front bulk...

Страница 14: ...period is typically one year For complete specifications on digital instruments refer to documents 61 101 02184 and 61 101 02194 It is strongly recommended that the manufacturer Barfield Inc service t...

Страница 15: ...56 101 00184 00185 Rev I INTRO September 24 2014 Page 3 of 56 Figure 2 LIMITED ONE YEAR WARRANTY...

Страница 16: ...56 101 00184 00185 Rev I Blank September 24 2014 Page 4 of 56 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 17: ...field Inc distributes high quality custom made pitot and static adapters for use on all general aviation airline helicopter and military aircraft Visit our web site at www barfieldinc com or contact t...

Страница 18: ...t the end of 101 00184 635 for example specifies the Airspeed indicator range Vertical Speed indicator range and the Altimeter range The 6 indicates an Airspeed indicator with a 20 250 knot range The...

Страница 19: ...Fitting Port for connection to aircraft Pitot System or other application 2 Airspeed Indicator Monitor differential pressure in terms of airspeed between pitot and static 3 VERTICAL SPEED Isolation Ne...

Страница 20: ...or rection Only for Analog Indicators 13 HYSTERESIS Calibration Card Lists altimeter hysteresis Only for Analog Indicators 14 VERTICAL SPEED Calibration Card Provides vertical speed calibration correc...

Страница 21: ...of blown fuses refer to page 12 for fuses specifications Allows turning power for pump ON or OFF O Note The end of the switch that is pressed inward indicates which position is selected For example in...

Страница 22: ...56 101 00184 00185 Rev I Blank September 24 2014 Page 10 of 56 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 23: ...nalog instruments refer to Sections 1 2 and 3 of the Appendix For accuracy specifications applicable to digital instruments 1811HA A0A or 1811GA A0A Test Sets refer to documents 61 101 02184 and 61 10...

Страница 24: ...UL certified 8 FUSE PROTECTION 1811HA MODEL ONLY Operating at 120VAC 2 fuses 1A each Operating at 240VAC 2 fuses 0 5A each Note The 1811HA Test Set ships with 2 each 1A 5mmx20mm fuses installed Cauti...

Страница 25: ...ction cards the operator creates a known correct pressure condition with which to compare the unit under test A Pressure Vacuum Requirements The 1811HA has an internal electric pump to supply vacuum a...

Страница 26: ...t voltage applied of 100 240VAC 2 1811GA PNEUMATIC SCHEMATIC DIAGRAM The 1811GA internal pneumatic connections are shown in Figure 6 CONTROL CROSSBLEED PRESSURE PUMP VENT PITOT GAUGE PRESSURE VENT STA...

Страница 27: ...atic connections are shown in Figure 7 VACUUM VENT PITOT PRESSURE PUMP CONTROL PITOT CROSSBLEED GAUGE PRESSURE CONTROL VACUUM PUMP STATIC VENT GAUGE CONTROL STATIC PORT PITOT PRESSURE TANK AIRSPEED VS...

Страница 28: ...e Note The user should become familiar with the 1811HA GA Test Set T S before attempting any tests To avoid erroneous test results and damaging aircraft components or the T S instruments particular at...

Страница 29: ...rmly close without damage However excessive force may overpower the knob set screw causing valve damage A Pitot Pretest 1 Close PORTS 1 and 6 with caps and VALVES 3 7 8 10 17 and 19 fully clockwise CW...

Страница 30: ...ircraft is non pressurized the Pitot System and Pitot Leak Tests may be omitted and the Static System Test performed A Pitot System Connection Using the specific aircraft plumbing diagram connect the...

Страница 31: ...an excessive Pitot Leak rate was detected in the previous test do not continue until aircraft pitot leak is corrected A Static System Connection Using the specific aircraft plumbing schematic as a gu...

Страница 32: ...ns stabilized monitor ALTIMETER 5 for one minute Ensure that the altimeter decreases no more than 100 feet plus the leak rate determined from section 5 PRETESTS in the Static Pretest 3 After test is c...

Страница 33: ...PITOT CONTROL 19 CCW until the ALTIMETER 5 reaches the desired test point Close CW the PITOT CONTROL 19 2 Once the negative altitude test is complete gently open CCW the STATIC VENT 10 to return the...

Страница 34: ...at the full scale reading of the T S or the aircraft VSI i e the climb indicator is not exceeded Note The VERTICAL SPEED 3 control is closed normally to separate the VSI 4 from the STATIC system The V...

Страница 35: ...System Connection 1 Using the specific aircraft plumbing diagram connect the PITOT PORT 1 to the aircraft pitot system Hi port and the STATIC PORT 6 to the aircraft static system Lo port Caution Ensu...

Страница 36: ...he metering valve settings and to maintain the desired instrument readings 1 Open the STATIC CONTROL 7 valve and increase the airspeed to approximately 10 knots below the desired test point 2 Open the...

Страница 37: ...Ambient Caution Perform the following test in exact order presented 1 Gently open the CROSSBLEED CONTROL CCW 8 until AIRSPEED 2 returns to normal rest position then open control fully 2 Monitor VSI an...

Страница 38: ...xample an altitude set to 10k with airspeed of 277 kts would give a MACH reading of 50 Table 3 Airspeed vs MACH Number Test Table MACH NUMBER 50 60 70 75 80 82 85 90 Altitude In feet Airspeed In kts 2...

Страница 39: ...ng the methods described 8 COMBINED PITOT AIRSPEED STATIC ALTITUDE TEST refer to Table 4 and set up altitude and airspeed combinations Table 4 Engine Pressure Ratio Test Table AIRSPEED knots Pt7 Hi Po...

Страница 40: ...VACUUM PUMP 11 and the PRESSURE PUMP 16 as necessary 6 Refer to the following table for the appropriate altitude and in Hg manifold pressure readings Table 5 Altitude vs Manifold Pressure ALTITUDE fe...

Страница 41: ...0 367 0 180 368 95 263 7 000 3 438 96 6 000 0 441 0 216 391 108 872 8 000 3 929 103 7 000 0 514 0 252 395 110 832 8 144 4 000 110 8 000 0 587 0 289 413 122 481 9 000 4 420 117 9 000 0 661 0 325 433 1...

Страница 42: ...Close T S valves 3 7 8 10 17 19 Open PITOT VENT 17 fully CW and maintain open for remainder of this procedure 3 Operate VACUUM PUMP 11 as necessary 4 Open PITOT VENT 17 fully and maintain open for re...

Страница 43: ...to 15 psi 4 Monitor AIRSPEED INDICATOR for one 1 minute 5 If there is an increase in airspeed seen continue to monitor for an additional five 5 minutes Note If during the monitoring period the increas...

Страница 44: ...is located at the VACUUM valve 5 Correct the leak before continuing Refer to section 2 RESETTING NEEDLE VALVE POSITIVE STOP E Vertical Speed Valve Test 1 Close all valves except CROSSBLEED 2 If using...

Страница 45: ...source other than the valves Do not tighten any valve beyond the closing point described below When it is determined that a valve is leaking correct the leak before continuing A Firmly close the valve...

Страница 46: ...56 101 00184 00185 Rev I Blank September 24 2014 Page 34 of 56 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 47: ...n intervals 12 Months All of the preceding plus Check Pressure and Vacuum gauges for friction and leaks Regarding leaks ensure the pressure gauge and related internal plumbing can maintain 15 psi for...

Страница 48: ...pment packaging procedure when packing the Test Set for reshipment To prevent damage from extreme atmospheric changes to the Test Set instruments it is recommended that the STATIC VENT CROSSBLEED CONT...

Страница 49: ...place Note Should the Test Set become exposed to moisture or very high humidity dry as soon as possible and temporarily store in dehumidified area D To prevent damage from extreme atmospheric changes...

Страница 50: ...56 101 00184 00185 Rev I Blank September 24 2014 Page 38 of 56 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 51: ...ptember 24 2014 Page 39 of 56 APPENDIX ANALOG INSTRUMENT SPECIFICATIONS Note For information on compliance with FAR 91 411 refer to Barfield document 60 101 00150 SECTION 1 ALTIMETER SECTION 2 AIRSPEE...

Страница 52: ...mber 24 2014 Page 40 of 56 SECTION 1 ALTIMETER The following engineering specification Document 23 338 00001 details the performance requirements of the pressure sensitive altimeters used in Barfield...

Страница 53: ......

Страница 54: ...50 000 ft Barometric Pressure Scale range at least 28 1 30 99 inches of Mercury 946 1049 millibars May include markers working in conjunction with Barometric Pressure Scale to indicate pressure altit...

Страница 55: ...the tolerances listed ALTITUDE FEET TOLERANCE FEET 1 000 70 2 000 70 3 000 70 5 000 80 10 000 90 15 000 100 20 000 125 25 000 150 30 000 175 35 000 200 40 000 250 50 000 400 TABLE 1 FRICTION 5 3 Hyste...

Страница 56: ...e against the 124 00002 instrument 5 4 After Effect Not more than 5 minutes after the completion of the hysteresis test the pointers shall have returned to their original reading corrected for any cha...

Страница 57: ...4 000 70 4 000 35 6 000 80 6 000 40 8 000 120 8 000 60 10 000 160 10 000 80 12 000 200 12 000 90 14 000 225 14 000 100 16 000 240 16 000 110 18 000 275 18 000 120 20 000 300 20 000 130 22 000 340 22 0...

Страница 58: ...6 of 56 SECTION 2 AIRSPEED The following engineering specification Barfield Document No 23 336 00025 details the performance requirements of the pitot static pressure type airspeed indicators for use...

Страница 59: ......

Страница 60: ...nots 4 Test Conditions Unless otherwise specified all tests shall be made with the instrument mounted in the horizontal Face UP position 5 Performance Requirements All units are required to meet the f...

Страница 61: ...n the dial with the exception of P N s 336 00001 336 00001R and 336 00004 The 336 00001 1R units pointer should rest between 15 45 knots The 336 00004 unit pointer position should rest at 350o 5o 0 po...

Страница 62: ...Knots TOLERANCE Knots 60 3 0 180 4 0 70 3 0 190 4 0 80 3 0 200 5 0 90 3 0 220 5 0 100 3 0 240 5 0 110 3 0 260 5 0 120 3 0 280 5 0 130 3 0 300 5 0 140 3 0 320 5 0 150 3 5 340 5 0 160 3 5 360 5 0 170 3...

Страница 63: ...ida 33142 Drawing No 23 336 00025 Page 5 of 5 6 4 P N 336 00006 READING Knots TOLERANCE Knots READING Knots TOLERANCE Knots 20 5 0 140 4 0 30 5 0 150 4 0 40 3 5 160 4 0 50 3 0 170 4 0 60 3 0 180 4 0 7...

Страница 64: ...f 56 SECTION 3 VERTICAL SPEED INDICATOR The following engineering specification Document 23 337 00025 details performance requirements of the pressure actuated vertical speed indicators used in Barfie...

Страница 65: ......

Страница 66: ...ed as part number 337 00001 TYPE II to be identified as part number 337 00002 TYPE III to be identified as part number 337 00003 TYPE IV to be identified as part number 337 00004 4 Test Conditions Unl...

Страница 67: ...uring a 1 minute period With a pressure of 10 inches of mercury applied to the static connection the leakage shall not cause more than 0 05 inches of mercury pressure drop during a 1 minute period 5 6...

Страница 68: ...est Rate Ascent and Descent Feet Per Minute Tolerance Feet Per Minute 500 35 1 000 75 1 500 150 2 000 250 1 500 200 2 000 250 1 500 200 2 000 250 Maximum test point for Type I SCALE ERROR TOLERANCE TY...

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