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DPS350 Pitot-Static Test Set

1. 8 Allow the test set elapsed time to reach approximately 2 00 min or more Record the leak rate of the tester and hoses so it can be deducted from the aircraft leak rate The test set must have a leak rate of 50 ft min or less 9 If the leak rate is greater than 50 ft min remove the hoses from the test set and repeat the Static Leak Test Repeating this procedure isolates the Test Set from the hoses If the test set passes the procedure the leak is located in the static hose or connector To correct the problem repair or replace the hoses or connectors A repeated failure of the test set demonstrates the leak is contained within the test set and should be sent to the manufacturer for repair 10 Press F4 to cancel the leak check at any time during the procedure Press the F4 button again to return to the parameter display screen Slowly open the PITOT VENT valve while observing and maintaining the VSI below the programmed limits to return the static system to ambient pressure Note To ensure that a negative airspeed condition does not occur it is important to vent the Static pressure through the PITOT VENT valve Note If one or more of the programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to Protection Circuit Reset Instruc tions The Limit protection feature may be disabled during the Tester Only Leak Checks without causing damage to the equipment 11 Ensure the teste
2. F2 v DECREASE INCREASE F1 SAVE NEW PARAMETER MAIN LIMITS PITOT 2p MACH MENU F3 F2 F2 VALUE pispLay MENU Menu F2 MENU 2 gt LIMITS MENU a v DECREASE Note F4 button returns LCD display to previous menu INCREASE A F1 LEAK RATE is SAVE NEW MENU 9 VALUE F2 Y DECREASE Figure 10 PITOT PORT LIMITS FLOWCHART 56 101 01170 F Ch 4 Nov 7 14 Page 30 of 59 i BARFIELD DPS350 USER MANUAL a To begin setting the Pitot Port Limits press the MENU pushbutton The Main Menu appears Main Menu F1 Display Units F2 Limits Set View Enable Disable F3 Maintenance F4 Cancel LEAK g CONTRAST TEST DEC INC F1 F2 F3 F4 MENU PUMP j b Press F2 to set the pitot or static protection limits The Limits Menu appears Limits View Set Enable Disable Static Limits Alt VSI Leak Rate Pitot Limits Airspeed Mach Leak Rate Enable Disable F4 Cancel LEAK CONTRAST TEST DEC INC FA F2 F3 F4 MENU PUMP re l Note Protection values are stored in non volatile memory and the values displayed are those set in previous operations It is recommended that the operator always set their desired protec
3. An internal electric pump is provided to supply vacuum options and features pressure capabilities of achieving 55K ft and 6 000 ft min on a wide body aircraft The Test Set operational input A C power requirements are 115 230 VAC 47 400 Hz 2 PHYSICAL DESCRIPTION A Carrying Case The carrying case is a fiberglass case comprised of upper and lower sections e The lower section supports the panel assembly e The upper section has sliding pin hinges for easy removal The upper section is also fitted with a shelf suitable for storage of this manual hoses and the power cable B Front Panel Switches and Controls Components shown in Figure 5 1 PITOT PORT Connects the aircraft pitot system to the tester 2 PANEL DISPLAY Displays measured data programmable limits and calibration information Also used to turn pump ON OFF enter programmed limits and set operating mode 3 STATIC PORT Connects the aircraft static system to the tester 4 PITOT CONTROL Controls pitot system pressure to achieve simulated conditions for airspeeds between 0 knots to 650 knots 5 CROSSBLEED CONTROL Controls pressure difference between pitot and static systems 56 101 01170 F Ch 1 Nov 7 14 Page 6 of 59 S BARFIELD DPS350 USER MANUAL e 2 i mor M BARFIELD ise j DPS350 A DIGITAL PITOT STATIC TEST SET 3 6 4 5 rj 8 11 9 10 Figure 5 DPS350 Front Panel Switches and Controls 56 101 01170 F Ch 1 Nov 7 14 Page 7 of 59
4. s Changing ments indicating the Pitot Pt Sampling s Changing sampling of the trans ducer data Firmware initialization and Auto Zero Mode A Wait CONTRAST T s D c EE INC T a F4 JU vene row sign shows until Auto Zero amp Initialization are completed 56 101 01170 F Ch 4 Nov 7 14 Page 19 of 59 i BARFIELD DPS350 USER MANUAL 3 Once initialization finishes the Parameter Display appears The XXXXX reading depends on the A sign appears if the DPS350 experiences field barometric pressure referenced to a complete loss of calibration 29 92 in Hg 0 Kts XXXXX Ft 0 00 Mach 0 Ft m Protection Enabled F1 View Limits LEAK CONTRAST 4 TEST DEC i F1 View Limits displays Protection Status Fi r L g pes PUMP only when the protection Enabled Disabled limits are enabled Pressing depends on how it F1 displays the maximum was set in previous limits the DPS350 is operations currently programmed for Adjusting contrast F3 to lighten the characters F4 to darken them B SETTING THE DISPLAYED UNITS The DPS350 can be configured to display the altitude and airspeed data using either the English ft ft min or Metric m km min system of measurement Other options include e Display the Engine Pressure Ratio EPR in inches of mercury
5. CONTRAST TEST DEC INC E L L um LH OJLL F1 Altitude Limit Menu Rate Limit XXXX Ft min Increase in 1000 Ft Increments Decrease in 1000 Ft Increments Save New Value F4 Cancel LEAK CONTRAS pce TEST DEC mE F2 Rate Limit Menu Leak Rate Warning XXX Ft min F1 Increase Allowable Leak Rate F2 Decrease Allowable Leak Rate F3 Save New Value F4 Cancel F3 Leak Rate Limit Menu Note In these figures XXXXX XXXX and XXX represent the values previously set e F1 increases and F2 decreases the Altitude or Rate Limits in 1 000 ft increments or Leak Rate Limits by 50 ft min To scroll down up quickly keep the F1 or F2 button pressed e Press F4 to return to the STATIC LIMITS Menu without saving any changes 56 101 01170 F Ch 4 Nov 7 14 Page 29 of 59 i BARFIELD DPS350 USER MANUAL e Once the desired Altitude or Rate protection limit is reached as indicated in the display press F3 to store the new value The display automatically returns to the STATIC Limits menu after saving the limit value e Press F4 until screen returns to the parameter display 3 Pitot Port Limits The Pitot Port Limits include Maximum Airspeed and Mach Limits The following flow diagram shows the process through the menus needed to set the Pitot Port Limits INCREASE A F1 AIRSPEED LIMIT 3 SAVE NEW gt MENU FES VALUE
6. Note If there are no altitude tests below field elevation this test may be omitted a b Open the CROSSBLEED valve fully CCW While ensuring not to exceed the aircraft VSI full scale range gently open the PITOT CONTROL to reach the desire downscale altimeter test point After the test point has been reached close the PITOT CONTROL CW and CROSSBLEED CONTROL valves fully Note The airspeed test point may only be set above the normal resting position of the pointer Taking care not to exceed the test point carefully open the PITOT CONTROL valve until the airspeed increases to the desired test point Note lfan airspeed test point is accidentally exceeded do the following 56 101 01170 F Ch 4 Nov 7 14 Page 48 of 59 i BARFIELD DPS350 USER MANUAL 1 Gently open the CROSSBLEED valve until the airspeed is 10 knots below the desired test value some altitude change occurs 2 Gently open the STATIC CONTROL valve to restore the altitude to a correct test point 3 Raise the airspeed to the test point by carefully opening the PITOT CONTROL valve until reaching the desire airspeed 4 Repeat procedure to complete the higher airspeed test points 5 Gently open the CROSSBLEED CONTROL valve and return the airspeed to its normal pointer rest position of 20 to 40 knots 3 Above Field Elevation Test Note The CROSSBLEED CONTROL VALVE should be fully open a Slowly open the STATIC CONTROL valve while
7. c CROSSBLEED CONTROL Open Knob fully counterclockwise d PITOT VENTOpen Knob fully counterclockwise e STATIC VENT Open Knob fully counterclockwise Note Do not over tighten the valves A light pressure is necessary to completely open or close the valves supplied with the DPS350 or other Barfield Inc Pitot Static testers Connect the power cable the STATIC blue band hose and PITOT red band hose to the test set if not already connected Note The quick connect ports on the test set and mating hoses are color coded and keyed to help prevent the accidental crossing of Pitot and Static hoses Ensure that the Tester Leak Checks referenced in the Test Set Leak Test are completed before connecting the tester to the aircraft systems Using a Barfield Inc universal adapter or another manufacturer s custom aircraft pitot adapter connect the PITOT PORT hose red band to the aircraft pitot system as referenced in the aircraft maintenance manual Using the Barfield Inc 2423F Static Port adapter or another manufacturers custom aircraft static adapter connect the 56 101 01170 F Ch 4 Nov 7 14 Page 42 of 59 9 i BARFIELD DPS350 USER MANUAL STATIC PORT hose blue band to the aircraft static system as referenced in the aircraft maintenance manual Note Some aircraft have more than one static port associated with a given static system Make sure that other ports in the system being tested are sealed before continuing
8. 01170 F Nov 7 14 Page 27 of 59 i BARFIELD DPS350 USER MANUAL b Press F2 to set the pitot or static protection limits The Limits Menu appears Limits View Set Enable Disable F1 Static Limits Alt VSI Leak Rate F2 Pitot Limits Airspeed Mach Leak Rate F3 Enable Disable F4 Cancel LEAK CONTRAST TEST DEC INC ce E E Note Protection values are stored in non volatile memory and the values displayed are those set in previous operations It is recommended that the operator always set their desired protection limits and enable the protection circuits before each use c To set the Static Port protection limits press F1 The following Static Limits menu appears Static Limits F1 Altitude F2 VSI Rate F3 Leak Rate Warning F4 Cancel Eak CONTRAST TEST DEC INC i Ce F1 sets the altitude protection limits F2 sets the rate of climb descent VSI limits F3 sets the Leak Rate limits during Leak Testing F4 returns to the previous menu 56 101 01170 F Ch 4 Nov 7 14 Page 28 of 59 S BARFIELD DPS350 USER MANUAL d To change the limits press F1 for altitude F2 for rate protection limits or F3 for setting the leak rate limits One of the following Altitude Rate Limit menus appears Altitude Limit XXXXX Ft Increase in lt 1000 Ft gt Increments Decrease in lt 1000 Ft gt Increments Save New Value F4 Cancel LEAK
9. 1 Display Config Firmware Version A F4 Cancel NTRA INC jg Press F1 to show firmware version The DPS400 shows the firmware version and its release date Maintenance Level 1 DPS350 S N XXXX Firmware 3 X ROX Date Day Month Year F4 Cancel LEAK CONTRAST _ TEST DEC INC sale Press F4 until returned to the parameter display 3 TEST SET LEAK TEST Each Test Set is completely calibrated and tested before shipment but to ensure the integrity of the sensitive tests to be made the pretests included in this section should be performed immediately before each use of the DPS350 A PRELIMINARY SETUP 1 56 101 01 Nov 7 14 Initial Valve Position for Test Set Leak Check a PITOT CONTROL Closed Knob fully clockwise b STATIC CONTROL Closed Knob fully clockwise c CROSSBLEED CONTROL Open Knob fully counterclockwise d PITOT VENT Open Knob fully counterclockwise e STATIC VENT Open Knob fully counterclockwise Caution Do not use unnecessary force to adjust any test set valve Positive stop spacers have been installed on all metering valves to permit firm closing of the valves without damage However excessive force can overcome the knob set screw resulting in valve damage 170 F Ch 4 Page 36 of 59 S BARFIELD DPS350 USER MANUAL Note Do not over tighten the valves A light pressure is r
10. Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to the Protection Circuit Reset The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment Ensure Tester has the following configuration before disengaging power I PITOT CONTROL Closed Knob fully clockwise Il STATIC CONTROL Closed Knob fully clockwise Ill CROSSBLEED CONTROL Open Knob fully counterclockwise IV PITOT VENT Open Knob fully counterclockwise V STATIC VENT Open Knob fully counterclockwise Continue to the Static System Test or if testing has been completed disconnect the PITOT and STATIC ports from the aircraft C STATIC SYSTEM TEST 1 Leak Test Caution Should any subsequent steps fail follow the steps outlined in the Standard a b c Test Set Shutdown Procedure before disconnecting the test set The Tester should be in the following positions PITOT CONTROL Closed Knob fully clockwise Il STATIC CONTROL Closed Knob fully clockwise Ill CROSSBLEED CONTROL Open Knob fully counterclockwise IV PITOT VENT Open Knob fully counterclockwise V STATIC VENT Open Knob fully counterclockwise Caution Before pressurizing the aircraft Pitot and or Static systems ensure that the Limit protection is ENABLED and the Altitude and Rate of Climb VSI limits are set to the appropriate values Make sure that the aircraft instrument limits are never exceeded Close the ST
11. S BARFIELD DPS350 USER MANUAL 6 STATIC CONTROL Controls static system pressure to simulate the barometric conditions for altitudes between 1800 feet and 55 000 feet 7 FUSESOverload Protection 2 2A 115 VAC Use 1A for 230 VAC 8 POWER SWITCH Applies power ON OFF to the tester Note The POWER switch must be turned ON only after the STATIC and PITOT VENT valves have been opened and the PITOT CONTROL and STATIC CONTROL valves have been closed 9 FUSED POWER Connects external power to the tester Unit uses either ENTRY MODULE a cable with a standard 115VAC plug or the optional cable for operator installation of 230VAC plug 10 PITOT VENT Releases applied pitot system pressure to ambient atmosphere 11 STATIC VENT Releases applied static system pressure allowing tester to return to ambient atmospheric pressure C Hose Assembly and Adapters 1 The hose kit is included with each Test Set and includes the following items a A pitot hose assembly is a 25 ft clear hose with red bands near each end and a self sealing quick disconnect for attachment to the pitot port The aircraft hose end has an AN4 type fitting for connection to a pitot port adapter b A static hose assembly is a 25 ft clear hose with blue bands near each end and a self sealing quick disconnect for attachment to the Test Set static port The aircraft hose end has an AN4 type fitting for connection to a static port adapter c The pitot tube a
12. Set the aircraft altimeter barometer to 29 92 in Hg Set the POWER switch ON Allow the initialization to complete indicated when the parameter display appears Program and enable the Altitude Airspeed Mach and VSI limits on the test set Refer to SETTING THE PROTECTION LIMITS for instructions and ensure that the aircraft s instrument limits are never exceeded Press the PUMP button to turn the internal Pressure Vacuum Pump ON B PITOT SYSTEM TEST 1 Leak Test Caution Should any subsequent step fail follow the steps outlined in the TEST SET SHUTDOWN PROCEDURE before disconnecting the test set Caution Before pressurizing the aircraft Pitot and or Static systems ensure Limit Protection is ENABLED and the Airspeed and Mach limits are set to the appropriate values Refer to SETTING THE PROTECTION LIMITS for instructions to ensure that the aircraft instrument limits are never exceeded a Close the PITOT VENT valve and maintain the STATIC VENT open to ambient pressure Caution The STATIC VENT valve is left open to ambient to prevent damage to the aircraft altimeter b Close the CROSSBLEED CONTROL valve Note The CROSSBLEED CONTROL valve is closed so the Pitot channel can establish a differential pressure airspeed c Observe the aircraft and test set airspeed indications while slowly opening the PITOT CONTROL valve to the desired airspeed test point typically 300 kts Note If one or any of the programm
13. USER MANUAL a Close STATIC CONTROL and PITOT CONTROL valves b Slowly Open the CROSSBLEED CONTROL valve until the airspeed is under the limit c Press F4 The message Limit Exceeded F4 RESET is replaced by Protection Enabled F1 View Limits and the protection circuits resets d Reset the Altitude to the previous datum test point by slowly opening the STATIC CONTROL valve e If higher airspeed is required reprogram the Airspeed or Mach limits f Slowly reopen the PITOT CONTROL valve and proceed with normal testing E DISPLAYING FIRMWARE VERSION The following flowchart shows the sequence of menus needed to display the firmware version MENU Display Config Leve ADDITIONAL ADDITIONAL Eu om PARAMETER MAIN 2 ADDITIONAL F2 N A DISPLAY menu F3 gt Maintenance FI enya 7799 MENUS2 O gt menues MIF NA Fi Press F1 To verify Software Level Figure 11 Firmware Flowchart To display current firmware version do the following 1 lf necessary press F4 until the screen returns to the parameter display 2 Press Menu pushbutton 3 Press F8 Maintenance 4 Press F1 Level 1 56 101 01170 F Ch 4 Nov 7 14 Page 35 of 59 S 6 7 i BARFIELD DPS350 USER MANUAL Press F3 Additional Menu three times or until the Maintenance Level 1 screen shows the Display Config Firmware Version option screen Maintenance Level
14. a Slowly open the CROSSBLEED CONTROL valve until the airspeed reaches 0 knots Ensure the CROSSBLEED CONTROL valve remains fully open Adjust the altitude to the next datum point by slowly opening while observing and maintaining the VSI below the programmed limits the PITOT VENT to decrease the pressure for establishing the next lower altitude Close the CROSSBLEED CONTROL valve Note The CROSSBLEED CONTROL valve is closed so the Pitot channel can establish a differential pressure Airspeed Ch 4 Page 50 of 59 56 101 01170 F Nov 7 14 i BARFIELD DPS350 USER MANUAL d Observe the aircraft and test set airspeed indications while slowly opening the PITOT CONTROL valve to the desired airspeed test point Note If any of the programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to the PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment e Upon reaching the desired airspeed completely close the PITOT CONTROL valve Increase Airspeed Note The CROSSBLEED CONTROL valve should be closed a Slowly open the PITOT CONTROL to establish the next airspeed Note Increasing the airspeed does not affect the Altimeter so a simple increase in the Pitot pressure will set the new datum point Decrease Airspeed a Slowly Open the CROSSBLEED CONTROL valve until the airspeed
15. altitude airspeed rate of climb and EPR F3 is used during maintenance F2 is used to set view to calibrate the tester and enable disable the tester s protection limits F4 is used to return to previous menus and or Main Menu Press it as many times as required to return to the proper display menu Please become familiar with this feature and use to your convenience Note Ch 4 56 101 01170 F Page 21 of 59 Nov 7 14 i BARFIELD DPS350 USER MANUAL 2 Press F1 to select Display Units The Display Units Menu appears CONTRAST 4 EE 3 CJ C 9 E F1 sets altitude to feet airspeed to knots and rate of climb to feet min F2 sets altitude to meters airspeed to km hr and rate of climb to meters min F3 is used to scroll to the other pressure units such as inches of mercury millibar or PSI or setting the units up for EPR tests F4 is used to return to the previous screen and or Main Menu When F3 is pressed an additional Display Units Menu shown below appears C ONTRAST _ INC 3E EJ EJ amp F1 displays the EPR data in the English system in Hg F2 displays the EPR data in the Metric system mb F3 displays the 3rd Display Units Menu to set up unit for EPR data displayed in feet and knots or m and km hr or continue to PSIA FA is used to return to the previous menu 1st Display Units Press twice to return to the Main Menu 56 10
16. from the hoses If the test set passes the procedure then the leak is located in the Pitot hose or connector To correct the problem repair or replace the hoses or connectors A repeated failure of the test set demonstrates the leak is contained within the test set and should be sent to the manufacturer for repair 9 Press F4 to cancel the leak check at any time during the procedure Press the F4 button again to return to the parameter display screen 10 After testing is completed slowly open the PITOT VENT until the airspeed has reached 0 knots 11 Ensure the Tester is in the following configuration before removing power 56 101 01170 F Ch 4 Nov 7 14 Page 41 of 59 i BARFIELD DPS350 USER MANUAL a PITOT CONTROL Closed b STATIC CONTROL Closed c CROSSBLEED CONTROL Open d PITOT VENT Open e STATIC VENT Open 12 Turn off POWER if the DPS350 leak testing is complete D APPLYING LEAK CORRECTION If the leak rate does not exceed 2 kts min or 50 ft min record the leak rate of the test set and hoses so that the values can be subtracted from the aircraft s leak test The calculated value removes the leaks caused by the tester and hoses and isolates the aircraft systems leak rate 4 AIRCRAFT TESTING A PRELIMINARY SETUP 1 2 S Verify the POWER switch is OFF Initial Valve Position for the test set a PITOT CONTROL Closed Knob fully clockwise b STATIC CONTROL Closed Knob fully clockwise
17. generally experienced by analog instruments Figure 4 DPS350 Pitot Static Test Set Software containing a programmable protection limit feature is included with the DPS350 design to insulate the aircraft instruments from possible damage caused by negative airspeed and over pressurization conditions The limit protection trip points are user or operator programmed implementing an LCD menu driven displays system 56 101 01170 F Ch 1 Nov 7 14 Page 5 of 59 i BARFIELD DPS350 USER MANUAL Computer actuated provides limit protection solenoid valves that safeguard aircraft altitude airspeed rate of climb descend and Mach instruments The DPS350 Pitot Static Test Set provides a very accurate and convenient method of performing leak testing of aircraft pitot static systems including air data computers and airspeed altimeter mach vertical speed engine pressure ratio and manifold pressure indicators The DPS350 Digital Pitot Static Test Set meets the demanding RVSM accuracy requirement of 0 003 in Hg and compliance requirements of 91 171 Note It is important that the customer be sure the use of the Test Set is in compliance with other aspects of the regulations The DPS350 Test Set also fully meets the requirements of the DOT Advisory Circular 43 203B for performing Altimeter and Static System Tests and Inspections Note It is important that the customer be sure the Test Set is in compliance with the Recertification requirement
18. is currently programmed for C SETTING THE PROTECTION LIMITS The DPS350 s protection limits feature enables a technician to safeguard the sensitive pressure sensing devices aboard the aircraft from damage The protection limits shield the aircraft from situations where the technician could generate conditions of over pressurization excessive vertical speed negative airspeed or excessive mach speed The DPS350 protective limits can also be disabled The protective limits should always be enabled when the test set is being used for aircraft testing but can be disabled when leak checking only the tester and hoses Note While leak checking the tester and hoses the limits may be disabled because the transducers used in the DPS350 are damage resistant The typical conditions which will cause damage to an aneroid instrument will not affect the DPS350 components The following flow diagram shows the process through the menus needed to enable disable the protective limits feature PARAMETER MAIN Fo LIMITS ENABLE DISABLE Mrs a PARAMETER pispLAy MENU MENU MENU 3 LIMITS MENU gt DISPLAY Note F4 button returns LCD display to previous menu Figure 8 PROTECTION LIMITS ENABLE DISABLE FLOWCHART 56 101 01170 F Ch 4 Nov 7 14 Page 24 of 59 i BARFIELD DPS350 USER MANUAL 1 Enable Disabling Protection Limits The following procedures describe how to enable disab
19. set to 30 kts and 1 800 ft If one or both of these two limits are exceeded two asterisks immediately appear next to the exceeded parameter The protection circuits also trip A negative airspeed trip is indicated by an airspeed reading of O kts with two asterisks A Solenoid Valves Operation The following table is a summary of the limit protection solenoid valves operation Solenoid Valve s Actuated Asterisks displayed to indicate programmed limits are exceeded Open SV1 SV3 SV4 SV5 Closed SV2 Open SV3 SV4 SV5 Single asterisk Programmed Limit Exceeded Warning Deviation from Programmed Limit Normal Operation No Limit Exceeded veh ASTES eISply Altitude 1 000 ft 350 m Closed SV1 SV2 Negative Altitude No single asterisk Open SV4 SV5 1 800 ft Not Programmable Warning Closed SV1 SV2 SV3 Open SV4 SV5 Airspeed 50 kts 100 km hr Closed SV1 SV2 SV3 Negative Airspeed 30 kts No single asterisk Open SV2 Not Programmable Warning Closed SV1 SV3 SV4 SV5 Open SV4 SV5 maen 02 Maen Closed SV1 SV2 SV3 VSI 500 ft min 150 m min open oya Closed SV1 SV2 SV3 SV5 Table 1 Limit Protection 56 101 01170 F Ch 3 Nov 7 14 Page 14 of 59 S BARFIELD DPS350 USER MANUAL 5 DPS350 PNEUMATIC SCHEMATIC DIAGRAM Figure 6 shows the internal pneumatic connections of the DPS350 Pitot Static Test Set PITOT TANK STATIC
20. the EPR display to desired units of measure refer to SETTING THE DISPLAYED UNITS Note lf the EPR data is displayed in Altitude ft and Airspeed kts Table 3 below can be referenced as a guide to establish the desired EPR Ratio b Establish the respective static Altitude or PT2 and pitot Airspeed or PT7 pressure combination to achieve the desired EPR ratio AIRSPEED knots ALTITUDE feet EPR Table 3 Engine Pressure Ratio Test Table c After testing has been completed use the Standard Test Set Shutdown Procedures to return the test set and aircraft to ambient pressures 56 101 01170 F Ch 4 Nov 7 14 Page 55 of 59 i BARFIELD DPS350 USER MANUAL G MANIFOLD PRESSURE GAUGE TEST 1 Preliminary a Initial Valve Position for Manifold Pressure Gauge Test l PITOT CONTROL Closed Knob fully clockwise Il STATIC CONTROL Closed Knob fully clockwise Ill CROSSBLEED CONTROL Open Knob fully counterclockwise IV PITOT VENT Open Knob fully counterclockwise V STATIC VENT Open Knob fully counterclockwise Caution Do not use unnecessary force to adjust any test set valves Positive stop spacers have been installed on all metering valves to permit firm closing of the valves without damage However excessive force can overcome the knob set screw resulting in valve damage Note Do not over tighten the valves A light pressure is necessary to completely open or close the valves supplied with the DPS3
21. 1 01170 F Ch 4 Nov 7 14 Page 22 of 59 i BARFIELD DPS350 USER MANUAL When F3 is pressed again a third additional Display Units Menu appears F1 F2 F3 F4 m CONTRA TEST DEC J CJ AS amp displays EPR data in ft and knots displays EPR data in meters and km hr displays the 4 Display Units Menu to set up the unit to show in PSIA is used to return to the previous menu Display Units Press to return to the Display Units Menu When F3 is pressed 3 times Display Units Menu shown below displays F1 F2 F3 FA 56 101 01170 F Nov 7 14 N f co dcm EAK TEST DEC C109 CFE eA Ps Pt and Qc displays in units of xx xxxx in Hg Ps Pt Qc displays in units of psi absolute and Qc in psi differential Not Applicable Returns user to previous menu Press to return to the Display Menu Ch 4 Page 23 of 59 i BARFIELD DPS350 USER MANUAL Double Asterisk appears next to An asterisk appears next to Altitude Altitude Airspeed VSI or Mach when Airspeed VSI or Mach when the protection the protection limits are exceeded limits are approached 0 Kts 0 00 Mach Protection Enabled LEAK CONTRAST TEST DEC tt Protection Status Enabled Disabled F1 View Limits displays only when the depends on how it was set protection limits are enabled in previous operations Pressing F1 displays the maximum limits the DPS350
22. 50 USER MANUAL CHAPTER 2 SPECIFICATIONS AND CAPABILITIES PHYSICAL DATA e Height e Width e Depth e Weight 2 SPECIFICATIONS e Altitude e Airspeed e Rate of climb e Mach e Ps channel e Ptchannel e EPR 9 76 in 24 8 cm 15 38 in 89 1 cm 14 87 in 37 8 cm 35 Ibs 15 9 kg 1 800 to 55 000 ft 20 to 650 knots 0 to 20 000 ft min 0 1 to 3 5 0 8 in Hg to 32 in Hg absolute static port 0 8 in Hg to 77 in Hg absolute pitot port Pt2 Range 2 693 in Hg to 32 in Hg Pt7 Range 2 693 in Hg to 57 in Hg 3 ACCURACY typical e Altitude e Airspeed e Rate of Climb 56 101 01170 F Nov 7 14 0 0030 in Hg 0 102 mbar 3 ft at sea level 6 ft at 20 000 ft 8 ft at 30 000 ft 14 ft at 45 000 ft 22 ft at 55 000 ft 0 008 in Hg 0 271 mbar 2 0 kts at 23 kts 0 5 kts at 100 kts 0 1 kts at 500 kts 1 of Reading Ch 2 Page 11 of 59 S BARFIELD DPS350 USER MANUAL 3 ACCURACY continued e Mach 0 001 mach above 0 10 mach e EPR 0 001 ratio Pt7 Pt2 ratio of 5 0 or less e Stability 0 01 of range year max 4 OPERATING TEMPERATURE RANGE 0 C to 50 C 32 F to 122 F 5 DISPLAY UNITS e Airspeed Knots km hr e Altitude Feet meters e Mach dimensionless ratio e Rate of Climb Feet min Meters min e Pt Ps Qc in Hg mb PSIA e EPR ratio Pt Ps calculated with mb or in Hg or with Airspeed A
23. 50 or other Barfield Inc Pitot Static testers Connect the Power cable the STATIC blue band hose to the manifold gauge to be tested if not already connected Note The quick connect ports on the test set and mating hoses are color coded and keyed to help prevent the accidental crossing of Pitot and Static hoses Set the POWER switch to ON Wait for initialization to be completed which is indicated when the parameter display appears Press the PUMP button to engage the internal Pressure Vacuum Pump Note The PUMP can be turned ON OFF as necessary The protection limits may be disabled during the DPS350 Leak Tests to reduce the time necessary to check the condition of the test set The protection limits may be disabled during the DPS350 leak tests because the transducers used in the test set are resistant to damage typically affecting Aneroid Instruments The DPS350 Protection Limits must be enabled anytime the tester is connected to the aircraft The protection limits ensure that no damage to the Aircraft s Pitot Static systems occur during testing 56 101 01170 F Ch 4 Nov 7 14 Page 56 of 59 i BARFIELD DPS350 USER MANUAL 2 Test a The DPS350 can be changed to display the static pressure in in Hg units by referring to section 1 4 Page 4 Setting the Display Units b Close the STATIC VENT and adjust the STATIC CONTROL to the required pressure in Hg for the Manifold pressure test point Note Use the follo
24. ATIC and PITOT VENT valves Ensure the CROSSBLEED CONTROL valve is fully open 56 101 01170 F Ch 4 Nov 7 14 Page 45 of 59 d e S BARFIELD DPS350 USER MANUAL Caution The CROSSBLEED CONTROL valve must be open while the Static Channel Altitude is changed The CROSSBLEED CONTROL valve bleeds the Static and Pitot Pressures together preventing an undesirable differential pressure or airspeed from being created on the Pitot Channel Slowly open the STATIC CONTROL valve while observing and maintaining the VSI below the programmed limits and establish the desired test altitude typically 20 000 feet then close the STATIC CONTROL valve fully Note If any of the programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test then refer to the Protection Circuit Reset Instructions The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment Perform the Static Leak Test following the instructions for the STATIC LEAK TEST steps 5 and 11 2 Altitude Checks Static Only Caution Should any subsequent steps fail follow the steps outlined in the Standard a Test Set Shutdown Procedure before disconnecting the test set Verify that Tester Static Leak and the Aircraft Static System Leak check have been completed Set the front panel controls I PITOT CONTROL Closed Knob fully clockwise Il STATIC CONTROL Closed Knob full
25. Button F2 The Leak Test Mode menu appears CONTI RASI INC Note The XXX X kts and XXXXX Ft indication are the airspeed and altitude from which the leak test was started 56 101 01170 F Ch 4 Nov 7 14 Page 40 of 59 S BARFIELD DPS350 USER MANUAL 6 Press F2 for a Pitot Leak Check The following menu appears LEAK p CONTRAST TEST DEC INC zeit ASS Note Do not press F2 until ready to do the Leak Check As soon as F2 is pressed the screen above will display a 60 second countdown timer allowing time for stabilization of the pitot pressure The actual leak check measurement engages when the timer has completed the 60 second stabilization time 7 After the 60 seconds stabilization time elapses the Pitot Leak Test screen appears to indicate the start of the actual leak test A Pitot Leak reading is taken XXX Kis XOX Ft every 3 seconds 0 0 Kts min es XXXXX Ft m and the results are displayed in The elapsed timer indicates the total LEAK Kts min TEST oic time since the Leak E 5 i a Test was initiated 8 Allow the test set elapsed time to reach about 2 0 minutes or more Record the leak rate of the tester and hoses The test set must have a leak rate of 2 kts min or less If the leak rate is greater than 2 kts min remove the hoses from the test set and repeat the Pitot Leak Test Repeating this procedure isolates the Test Set
26. CH value obtained is the same as that listed in the table for the settings For example an altitude set to 10k with the airspeed of 277 kts would give a MACH reading of 50 Select a new airspeed and altitude and repeat the test as required 56 101 01170 F Ch 4 Nov 7 14 Page 53 of 59 i BARFIELD DPS350 USER MANUAL MACH NUMBER pau so mo oo oe 277 334 391 420 449 247 298 350 376 403 414 429 157 186 201 216 222 231 246 143 169 183 196 202 210 225 L 161 174 187 193 201 214 Table2 Airspeed vs MACH Number Test After testing has been completed use the Standard Test Set Shutdown Procedures to return the test set to ambient 56 101 01170 F Ch 4 Nov 7 14 Page 54 of 59 i BARFIELD DPS350 USER MANUAL F ENGINE PRESSURE RATIO EPR TEST Note This test is limited by Test Set airspeed range 1 Preliminary a Connect the PITOT PORT red band to the PT7 Hi port of the E P R transmitter to be tested b Connect the STATIC PORT blue band to the PT2 Lo port of the E P R transmitter to be tested Test a The EPR function of the DPS350 allows the display of the EPR Ratio PT7 PT2 and also pressures of PT2 and PT7 individually The units of measure available for the PT2 and PT7 pressure display are in Hg mb or Altitude ft or m and Airspeed kts or km hour To set up
27. ENT DOWNTIME DAMAGE TO PROPERTY AND THIRD PARTY CLAIMS ARISING OUT OF ANY THEORY OF RECOVERY INCLUDING WARRANTY CONTRACT STATUTORY OR TORT NOTWITHSTANDING THE TERM OF ANY LIMITED WARRANTY OR ANY WARRANTY IMPUED BY LAW OR IN THE EVENT THAT ANY LIMITED WARRANTY FAILS OF ITS ESSENTIAL PURPOSE IN NO EVENT WILL BARFIELD S ENTIRE LIABILITY EXCEED THE PURCHASE PRICE OF THIS PRODUCT SOME STATES PROVINCES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION OR EXCLUSION MAYNOT APPLY TO YOU THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS THAT VARY FROM STATE TO STATE AND PROVINCE TO PROVINCE BARFIELD INC 4101 NW 29th Street Miami Florida 33142 USA Form 7 5 3 13 Dated 09 01 2014 Rev 1 odes n AIRFRANCE FJ KLM INDUSTRIES Engineering amp Maintenance Figure3 LIMITED WARRANTY STATEMENT 56 101 01170 F Intro Nov 7 14 Page 3 of 59 i BARFIELD DPS350 USER MANUAL This page intentionally left blank 56 101 01170 F Blank Nov 7 14 Page 4 of 59 i BARFIELD DPS350 USER MANUAL CHAPTER 1 DESCRIPTION 1 GENERAL DESCRIPTION The BARFIELD INC DPS350 Pitot Static Tester is a programmable microprocessor based unit applying SMT Surface Mount Technology and the latest transducer technology The operation is similar to Barfield Inc 1811 series testers with the exception that the transducer technology used is virtually immune to the costly repairs
28. NTIFICATION LABEL 56 101 01170 F Intro Nov 7 14 Page 1 of 59 i BARFIELD DPS350 USER MANUAL B The Owner s Warranty Registration card Figure 2 is to be completed by the owner and returned to Barfield Inc within ten 10 days of purchase to ensure automatic update of printed matter and validation of warranty OWNER WARRANTY REGISTRATION RETURNING THIS CARD COMPLETED ENABLES US TO KEEP YOU AUTOMATICALLY INFORMED OF TECHNICAL UPDATES and VALIDATES YOUR WARRANTY NAME TITLE DEPARTMENT COMPANY ADDRESS CITY STATE ZIP PIN SIN MODEL PURCHASED FROM DATE AIRLINE 3 REPAIR STATION 3 OEM O OTHER INFORMATION GIVEN ON THIS BARFIELD INC WARRANTY CARD IS AND WILL REMAIN STRICTLY CONFIDENTIAL AND WILL NOT BE SHARED m Figure2 OWNER WARRANTY REGISTRATION CARD C The Limited Warranty Statement Figure 3 which lists the manufacturer s obligation to the original purchaser D Each new or re certified unit is delivered with a Certificate that shows the date when the unit was tested by the manufacturer its serial number and when the next certification is due This certificate confirms that the unit performed according to its design specifications 3 RECERTIFICATION The Test Set has a one year recertification requirement Maintenance required by this unit must be performed by qualified technicians in a shop equipped with the necessary tooling and facilities Note Recertification by a calibration repair shop not pos
29. PAIR FACILITIES The manufacturer of this equipment does not recommend the user to attempt any maintenance or repair In case of malfunction contact the manufacturer to obtain the list of approved repair 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 to keep track of the shipment and the service BARFIELD PRODUCT SUPPORT DIVISION Shipping Address Telephone 305 894 5400 Barfield Inc 800 321 1039 4101 NW 29th Street Miami Florida 33142 Fax 305 894 5401 USA Mailing Address Barfield Inc P O Box 025367 Miami FL 33102 5367 USA 56 101 01170 F LOARF Nov 7 14 Page v i BARFIELD DPS350 USER MANUAL This page intentionally left blank 56 101 01170 F Blank Nov 7 14 Page vi DPS350 USER MANUAL TABLE OF CONTENTS Contact Information Attention Page Revision Record Page List of Approved Repair Facilities Table of Contents List of Figures and Tables i BARFIELD PAGE INTRODUCTION oo ccc cccccccccccccccccecceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeuueeuaeeusueesuuesueasueeesensenesunnsuneass 1 1 PUBLICATION BREAKDOWMN eH Henn 1 2 INFORMATION PROVIDED WITH THE UNIT n 1 3 RECERTIFICATION eeeeeeeeenenenenennenrnnen nennen nnn 2 CHAPTER 1 DESCRIPTION c ccscccssssssccsscsssccssccsescseccceccseccseccesccseccc
30. TANK MANIFOLD po vh Nem Oe my SW SH PORT KN Ps bi CONTROL Se svi Fie eS Se Ce oe CS e TRAMSDUCER TRANSDUCER SV6 10 IN 2 WAY 10 IN PITOT Vc2 vay CONTROL GOF i CROSSBLEED me eS STATIC n aaa CONTROL CONTROL RESTRICTOR RESTRICTOR STATIC VENT sy5 V 3 WAY VACUUM SOURCE PRESSURE SOURCE VIEW FROM REAR OF PANEL ES lt PRES lt gt VAC VACUUM PRESSURE ELECTRIC PUMP 24 VDC Figure 6 DPS350 Pneumatic Diagram 56 101 01170 F Gh 3 Nov 7 14 Page 15 of 59 i BARFIELD DPS350 USER MANUAL This page intentionally left blank 56 101 01170 F Blank Nov 7 14 Page 16 of 59 i BARFIELD DPS350 USER MANUAL CHAPTER 4 OPERATION 1 GENERAL The DPS350 has been designed to operate similarly to the Barfield Inc 1811 Series testers The user should become familiar with the DPS350 before connecting it to an aircraft system or instruments and or performing any tests The test procedures are described in place of any specifications by either the airframe or instrument manufacturer Particular attention should be addressed to preliminary procedures to avoid erroneous test results and to avoid the danger of damaging any of the aircraft or Test Set instruments The quick connect ports on the test set and mating hoses are color coded and keyed to help prevent accidental crossing of Pitot and S
31. VENT valve to decrease the pressure for establishing the next altitude Note Opening the CROSSBLEED CONTROL valve bleeds the positive Pitot pressure into the Static channel thus reducing the Static Vacuum or Altitude c Close the CROSSBLEED CONTROL valve Note The CROSSBLEED CONTROL valve is closed so the Pitot channel can establish a differential pressure airspeed Caution Do not use unnecessary force to adjust any test set valves Positive stop spacers have been installed on all metering valves to permit firm closing of the valves without damage However excessive force can overcome the knob set screw resulting in valve damage d Observe the aircraft and test set airspeed indications while slowly opening the PITOT CONTROL valve to the desired airspeed test point Note If one or more programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment e Upon reaching the desired airspeed completely close the PITOT CONTROL valve 4 Completion of Combined Pitot Static Tests After all Combined Tests have been finished perform the following steps a Slowly open the CROSSBLEED CONTROL valve until the airspeed reaches 0 knots Ensure the CROSSBLEED CONTROL valve remains fully open 56 101 01170 F Ch 4 Nov 7 14 Page 52 of 59
32. able 1 Limit Protection M 14 Table 2 Airspeed vs MACH Number Test ccccceeeeeeseeeeeeeeeeeeeeeeenaeeeees 54 Table 3 EPR Test Table T 55 Table 4 Altitude vs Manifold Pressure esee 57 56 101 01170 F LOFT Nov 7 14 Page ix i BARFIELD DPS350 USER MANUAL This page intentionally left blank 56 101 01170 F Blank Nov 7 14 Page x S BARFIELD DPS350 USER MANUAL INTRODUCTION 1 PUBLICATION BREAKDOWN This user instruction manual establishes the standards of operation for the DPS350 Pitot Static Test Set Its purpose is to provide sufficient information for the personnel unfamiliar with this unit to understand it identify its parts and operate it in accordance with proper procedures operating techniques precautions and limitations 2 INFORMATION PROVIDED WITH THE UNIT Besides this User Instruction Manual the Tester is delivered with the four information items described below A The identification label Figure 1 located on the front bulkhead of the Test Set provides the following information Manufacturer Name Designation of Equipment Equipment Part Number Equipment Model Number Equipment Serial Number Equipment Modification if applicable Equipment Options if applicable 459 00039 B M BARFIELD DIGITAL PITOT STATIC TEST SET NEEDS 101 01170 NN DPS350 SN MEE ES EX F9 ET ES E e D FR IS DLLEMIN pope 61 Ed E E I Figure 1 IDE
33. ach displays The high accuracy and stability of the DPS350 transducers allows a technician to test an aircraft s Pitot and Static system without the need for correction cards and allows for a one year re certification cycle 3 POWER SUPPLY CIRCUITS The DPS350 can be powered from a115 or 230 VAC at 47 400 Hz The internal power supply automatically detects an applied input voltage of 115 or 230 VAC 4 PROTECTION CIRCUITS The aircraft systems are protected against excessive rates and pressures by several fail safe solenoid and check valves Solenoid valve actuation is controlled by programmable limits set by the operator on the control panel When the actual airspeed altitude or VSI approaches the protection limit programmed by the operator an asterisk appears next to the affected parameter on the display and warns the operator that a limit is about to be exceeded If no corrective action is taken and the limit is reached the appropriate solenoid valve s Refer to Table 1 actuates and isolates the aircraft systems from the tester vacuum pressure sources The asterisks warning changes from a single to a double display to indicate protection limits are reached upon which the message Limit s Exceeded F4 Reset is shown 56 101 01170 F Ch 3 Nov 7 14 Page 13 of 59 i BARFIELD DPS350 USER MANUAL The negative airspeed and negative altitude protection limits are not programmable by the operator but are factory
34. ach protection limit is reached as indicated in the display press F3 to store the new value After saving the limit value the display automatically returns to the Pitot Limits menu e To change the Leak Rate limits at the Pitot Limits screen press F3 The Leak Rate limits menu appears CONTRA AST INC BE F3 z Leak Rate Limit Menu Note X X represents values previously set e F1 increases and F2 decreases the Leak Rate Limits by 50 ft min To scroll up down quickly press and hold in the F1 or F2 button e Press FA to return to the Pitot Limits Menu without saving any changes e Once the desired Rate protection limit is reached as shown on the display press F3 to store the new value After saving the limit value the display automatically returns to the Pitot Limits menu f Press F4 until returned to the parameter screen 56 101 01170 F Ch 4 Nov 7 14 Page 33 of 59 i BARFIELD DPS350 USER MANUAL D PROTECTION CIRCUIT RESET INSTRUCTIONS 1 Altitude Limits Exceeded a Close STATIC CONTROL and PITOT CONTROL valves fully Caution Do not use unnecessary force to adjust any test set valves Positive stop spacers have been installed on all needle valves to permit firm closing of the valves without damage However excessive force can overcome the knob set screw resulting in valve damage b Slowly open the CROSSBLEED CONTROL valve until the airspeed equals 0 knots c Slowly open t
35. b fully clockwise c CROSSBLEED CONTROL Open Knob fully counterclockwise d PITOT VENT Open Knob fully counterclockwise e STATIC VENT Open Knob fully counterclockwise Caution Do not use unnecessary force to adjust a test set valve Positive stop spacers have been installed on all metering valves to permit firm closing of the valves without damage However excessive force can overcome the knob set screw resulting in valve damage Note It is imperative that the Pitot Vent and Static Vent valves are fully opened and the Pitot Control and Static Control valves are fully closed before turning power ON to prevent the auto zero error correcting circuits from malfunctioning Wait until initialization is complete before opening or closing any valves Note If the unit loses power or is powered OFF while the aircraft has reached a certain altitude and or airspeed open the Crossbleed Control valve and use the Pitot Vent valve while observing the aircraft s instruments to vent the system If power becomes available the test set can be powered on without venting to ambient in these circumstances where the only detriment is the airspeed accuracy at very low airspeeds below 50 kts may suffer 2 Set power switch to ON After reading EEPROM and Test Set Configuration are flashed on the display the following or similar screens appear during the Test Set initialization INITIALIZAT ION Ps amp Pt readout incre Static Ps Sampling
36. current Limit protection parameters Once pressed the display returns to the Parameter Display Note Do not press F1 if you do not wish to change the status Press F4 repeatedly until the parameter display menu appears status is unchanged e Verify that Protection Status and Display Units are set to the required limits Then continue with normal testing 2 Static Port Limits The Static Port Limits include limits on the Altitude Vertical Speed VSI and Leak Rate The flow diagram Figure 9 next page shows the process through the menus needed to set static port limits 56 101 01170 F Ch 4 Nov 7 14 Page 26 of 59 PARAMETER DISPLAY MENU i BARFIELD DPS350 USER MANUAL MAIN MENU F2 LIMITS MENU INCREASE F1 gt ALTITUDE MENU F3s SAVE NEW VALUE F2 DECREASE F1 INCREASE Fi STATIC SAVE NEW F1 E VSI RATE MENU 3 gt uwrs 72 gt VALUE MENU Ay Y DECREASE bs INCREASE x F1 LEAK RATE SAVE NEW MENU ts vALUE F2 DECREASE Figure 9 STATIC PORT LIMITS FLOWCHART The following procedures describe how to set the values for the DPS350 static protection limits a To begin setting the Static Port limits press the MENU pushbutton The Main Menu appears LEAK CONTRAST TEST T INC i Ch 4 56 101
37. dapter is a flexible expandable rubber tube used to connect to the pitot hose to an aircraft s pitot port 2 The static port adapter kit is a universal adapter kit designed for connecting the static hose to the aircraft s static port Note The pitot and static adapters universally fit many aircraft but in some cases these adapters are not recommended or are inadequate Barfield Inc distributes high quality custom made pitot and static adapters for use on all general aviation airline helicopter and military aircraft For additional information contact the Barfield GSTE Sales Department or visit the web page at http www barfieldinc com D Power Cables 56 101 01170 F Ch 1 Nov 7 14 Page 8 of 59 i BARFIELD DPS350 USER MANUAL An AC power cable uses a common 3 prong IEC320 C13 AC power cable 9 10 power cable with std 115 VAC plug shipped with new units or 9 10 Power Cable without a plug for optional 230 VAC European Connector included with 230 VAC power cord kit Note For 230 VAC power input overload protection use X2 1 Amp Slo Blo fuses 1A fuses are included in the accessory bag with a 230 VAC power cord kit Test Sets for the USA 115 VAC ship with X2 2A fuses installed Replace with properly rated fuses 56 101 01170 F Ch 1 Nov 7 14 Page 9 of 59 i BARFIELD DPS350 USER MANUAL This page intentionally left blank 56 101 01170 F Blank Nov 7 14 Page 10 of 59 S BARFIELD DPS3
38. ecnsecessensessesenseeses 5 1 GENERAL DESCRIPTION eee Henne 5 2 PHYSICAL DESCRIPTION eeeeeeennnnneeennrnnernnernnnnn 6 A Carrying Case He 6 B Front Panel Switches and Controls eeeeee 6 C Hose Assembly and Adapters sssseeeeeee 8 D Power Cables iet sida tbe a igiit 9 CHAPTER 2 SPECIFICATIONS AND CAPABILITIES eees 11 1 PHYSICAL DATA eeeeennennnnnmennnnnnn nennen nennen nennen nenne tnn 11 2 SPECIFICAT ONG eene nenne nennen nennen nnn 11 3 ACCURACY s Eee cms tee tUe eem 11 4 OPERATING TEMPERATURE RANGE nenne 12 5 DISPLAY UNITS eseeeeennnennennnennnnnnnn nnne nennen nennen nre tn 12 6 PRESSURE MEDIA creen 12 7 TRANSDUCERS eene nennen net entered tn ar enn 12 8 INPUT A C POWER tti eter 12 9 FUSE PROTECTION eene nennen nennen rennen ntn 12 CHAPTER 3 THEORY OF OPERATION ccscccsccssssssssssscsscccscccescsecnseccsecnsesceesnsesssssses 13 1 PRESSURE VACUUM REQUIREMENTS ene 13 2 CONTROL VALVE OPERATION eene nnn nnns 13 3 POWER SUPPLY CIRCUITS sesssssssseeeeeeenee enne nnns 13 4 PROTECTION CIRCUITS eeeeeeeennnennnnnmnnnnnn nennen nennen nnns 13 5 PNEUMATIC SCHEMATIC DIAGRAM cccccccsssecesssessseeec
39. ed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment 56 101 01170 F Ch 4 Nov 7 14 Page 43 of 59 d t BARFIELD DPS350 USER MANUAL Upon reaching the desired airspeed fully close the PITOT CONTROL valve and perform the Pitot leak check following the instructions for the Tester Pitot Leak Test steps 5 through 12 Airspeed Checks Pitot Only Caution Should any subsequent steps fail follow the steps outlined in the Standard Test Set Shutdown Procedure before disconnecting the test set Caution Before pressurizing the aircrafts Pitot and or Static systems ensure the a c e Limit protection is ENABLED and the Airspeed and Mach limits are set to the appropriate values Refer to Table 2 Make sure that the aircraft s instrument s limits are never exceeded Verify that the Tester Pitot Leak Test and the Aircraft Pitot System Leak checks have been completed Set the front panel controls as follows l PITOT CONTROL Closed Knob fully clockwise Il STATIC CONTROL Closed Knob fully clockwise Ill CROSSBLEED CONTROL Open Knob fully counterclockwise IV PITOT VENT Open Knob fully counterclockwise V STATIC VENT Open Knob fully counterclockwise Close the PITOT VENT valve and leave the STATIC VENT open to ambient pr
40. equired to completely open or close the valves supplied with the DPS350 or other Barfield Inc Pitot Static testers 2 Ensure hoses are connected to the PITOT Port and STATIC Port of the test set and that the hose connections make a good seal If the connectors on the aircraft side of the hoses are not quick disconnects or self sealing then a tight sealing plug should be used to seal the hose assembly This is necessary to test the hose leakage as well as the tester This is the ideal leak test that determines the condition of the tester and hoses together If a sealing plug is not available then leak test the DPS350 without connecting the hoses 3 Connect the Power cable the STATIC blue band hose and PITOT red band hose to the test set if not already connected Note The quick connect ports on the test set and mating hoses are color coded and keyed to help prevent the accidental crossing of Pitot and Static hoses 4 Set the POWER switch to ON Allow the initialization to complete parameter display appears Note If the unit losses power or is powered off for some reason while in altitude and or airspeed close static and pitot controls Open the CROSSBLEED CONTROL valve and use the PITOT VENT valve while observing the aircraft instruments to vent the system If power becomes available the test set can be powered on without venting to ambient in these circumstances where the only disadvantage relates to having the airspeed acc
41. erving and maintaining the VSI below the programmed limits To decrease altitude slowly open the STATIC VENT valve g After testing has been completed slowly open the PITOT VENT valve while observing and maintaining the VSI below the programmed limits to return the aircraft static system to field elevation Note To ensure a negative airspeed condition does not occur it is important to vent the Static pressure through the PITOT VENT valve Note If one or more of the programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment h The Tester should be in the following configuration before turning POWER off l PITOT CONTROL Closed Knob fully clockwise Il STATIC CONTROL Closed Knob fully clockwise IIl CROSSBLEED CONTROL Open Knob fully counterclockwise IV PITOT VENT Open Knob fully counterclockwise V STATIC VENT Open Knob fully counterclockwise i Continue on to the Combined Pitot Static Test or if testing has been completed disconnect the PITOT and STATIC ports from the aircraft D COMBINED PITOT STATIC TEST 1 Combined Altitude Airspeed Tests Caution Should any subsequent steps fail follow the steps outlined in the Standard Test Set Shutdown Procedure before disconnecting test set Note Always start tests at the low
42. essure Caution The STATIC VENT valve is left open to ambient to prevent damage to the aircraft altimeter Close the CROSSBLEED CONTROL valve Note The CROSSBLEED CONTROL valve is closed so that the Pitot channel can establish a differential pressure airspeed Caution Do not use unnecessary force to adjust any test set valves Positive stop spacers have been installed on all metering valves to permit the firm closing of the valves without damage However excessive force can overcome the knob set screw resulting in valve damage Monitor the aircrafts and test set s airspeed indications while slowly opening the PITOT CONTROL valve to the desired airspeed test point Note If one or more programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to the Protection Circuit Reset The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment Upon reaching the desired airspeed fully close the PITOT CONTROL valve 56 101 01170 F Ch 4 Nov 7 14 Page 44 of 59 f g i S BARFIELD DPS350 USER MANUAL To adjust the airspeed to the next datum point slowly open the PITOT CONTROL to increase or PITOT VENT valve to decrease the pressure for establishing the next airspeed After testing has been completed slowly open the PITOT VENT valve until the airspeed has reached 0 knots Note If one or more programmed limits VSI
43. est altitude and airspeed required To prevent tripping the protection circuits always make sure that the programmed rate limits are not exceeded while changing altitudes or airspeeds 56 101 01170 F Ch 4 Nov 7 14 Page 47 of 59 2 a i BARFIELD DPS350 USER MANUAL Verify that Tester Leak Tests and the Aircraft Pitot System Leak Test and Static System Leak Tests have been completed Ensure the aircraft altimeter is set to 29 92 in Hg Set the Tester controls to the following positions l PITOT CONTROL Closed Knob fully clockwise Il STATIC CONTROL Closed Knob fully clockwise Ill CROSSBLEED CONTROL Open Knob fully counterclockwise IV PITOT VENT Open Knob fully counterclockwise V STATIC VENT Open Knob fully counterclockwise Caution Before pressurizing the aircrafts Pitot and or Static systems ensure Limit Protection is ENABLED and the Altitude Rate of Climb VSI Airspeed and Mach limits are set to the appropriate values Refer to SETTING THE PROTECTION LIMITS Make sure that the aircraft instrument limits are never exceeded Close the STATIC and PITOT vents Ensure the CROSSBLEED CONTROL valve is fully open Caution The CROSSBLEED CONTROL valve must be open while the Static Channel Altitude is changed The CROSSBLEED CONTROL valve bleeds the Static and Pitot Pressures together preventing an undesirable differential pressure or airspeed from being created on the Pitot Channel Below Field Elevation Test
44. ests E Machmeter POSS enc ied eie tcd nci det Si pra olim ot E F Engine Pressure Ratio Epr sssssse G Manifold Pressure Gauge cccccsseeeeeeeeeeeeeeeeeeeeeeeneeees SHUTDOWN PROGEDUNRDES tirr tkt ontE oc t ntp arb h netu tace 1 2 5 CHAPTER 5 RECEIVING SHIPPING STORAGE RECEIVING E SHIPPING fr a 3 5r KE 1 2 3 56 101 01170 F Nov 7 14 t BARFIELD DPS350 USER MANUAL TABLE OF CONTENTS Continued TOC Page viii i BARFIELD DPS350 USER MANUAL LIST OF FIGURES AND TABLES PAGE Figure 1 simus paco T 1 Figure 2 Owner Warranty Registration Card sssseseeeeee 2 Figure 3 Limited Warranty Statement Card ssssseeeese 3 Figure 4 DPS350 Pitot Static Test Sel eei eo options kx ua rn si inr pides 5 Figure 5 DPS350 Front Panel Switches and Controls 7 Figure 6 DP S350 Pneumatic DiSOISITI uaria etia earns oa ra edie 15 Figure 7 Display nits FIOW OFlIBIT ieieeiaput oa pRorba besar si Ren Mida iN Rs E cU USD EPOR dS 21 Figure 8 Protection Limits Enable Disable Flowchart 24 Figure 9 Static Port Limits Flowchart iier metn et ttn 27 Figure TO Pitot Port Limits FIOWOHBIT uenire Errata nene rari ied 30 Figure 11 Firmware Flowchart ucro ini Enni Rua Ee sek ve ern ta Ra bue bxeia i Rud Ue 35 T
45. he PITOT VENT valve until the displayed altitude is 2 000 feet below the programmed limit then close the PITOT VENT valve Note Do not exceed programmed VSI rates while venting the system or the VSI rate protection circuit will trip d Press F4 The message Limit Exceeded F4 RESET is replaced by Protection Enabled F1 View Limits and the protection circuit resets e Slowly reopen the STATIC CONTROL valve Ensure not to exceed programmed VSI limits and continue with normal testing 2 VSI Rate Limit Exceeded a Close the STATIC CONTROL valve fully b Allow the VSI rate to drop below the programmed limit Press F4 The message Limit Exceeded F4 RESET is replaced by Protection Enabled F1 View Limits and the protection circuits resets Note Due to pressure transients It may be possible that the display shows variations of altitude and VSI after the protection circuits trip These are instantaneous readings sensed by the transducers which respond much faster than analog instruments and do not affect the aircraft systems to which the tester is connected Once the protection systems trip the aircraft systems remain fully isolated until the operator resets the DPS350 protection system c Slowly reopen the STATIC CONTROL valve taking care not to exceed programmed VSI limits d Continue testing as necessary 3 Airspeed Mach Limit Exceeded 56 101 01170 F Ch 4 Nov 7 14 Page 34 of 59 i BARFIELD DPS350
46. he product must have been handled and used as prescribed in the instructions accompanying this product This limited warranty does not cover any damage due to accident misuse abuse or negligence This limited warranty is non transferable and does not apply to any purchaser who bought the product from a reseller or distributor not authorized by BARFIELD including but not limited to purchases from internet sites This warranty does not affect any other legal rights you may have by operation of law Contact BARFIELD at www Barfieldinc com or customer service at 305 894 5506 for warranty service procedures DISCLAIMER OF WARRANTY EXCEPT FOR THE LIMITED WARRANTY PROVIDED HEREIN TO THE EXTENT PERMITTED BY LAW BARFIELD DISCLAIMS ALL WARRANTIES EXPRESS OR IMPLIED INCLUDING ALL WARRANTIES OF MERCHANTABILITY AND OR FITNESS FOR A PARTICULAR PURPOSE TO THE EXTENT THAT ANY IMPLIED WARRANTIES MAY NONETHELESS EXIST BY OPERATION OF LAW ANY SUCH WARRANTIES ARE LIMITED TO THE DURATION OF THIS WARRANTY SOME STATES PROVINCES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU LIMITATION OF LIABILITY REPAIR OR REPLACEMENT OF THIS PRODUCT AS PROVIDED HEREIN IS YOUR EXCLUSIVE REMEDY BARFIELD SHALL NOT BE LIABLE FOR ANY SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO LOST REVENUES LOST PROFITS LOSS OF USE OF SOFTWARE LOSS OR RECOVERY OF DATA RENTAL OF REPLACEMENT EQUIPM
47. i BARFIELD DPS350 Pitot Static Test Set USER INSTRUCTION MANUAL M N DPS350 P N 101 01170 Doc P N 56 101 01170 Revision F November 7 2014 BARFIELD INC Corporate Headquarters 4101 Northwest 29th Street Miami Florida 33142 www barfieldinc com Email gsesales barfieldinc com Barfield Inc Confidential and Proprietary Information This document and all the information contained herein is the sole property of Barfield Inc No intellectual property rights are granted by the delivery of this document or the disclosure of its content This entire document is proprietary information and shall not be reproduced or disclosed to a third party without the express written consent of Barfield Inc This document and its content shall not be used for any purpose other than that for which it is supplied i BARFIELD CONTACT INFORMATION Users are requested to notify the manufacturer of any discrepancy omission or 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 CUSTOMER SUPPORT GSTE BARFIELD INC P O BOX 025367 MIAMI FL 33102 5367 USA Telephone 305 894 5400 800 321 1039 Fax 305 894 5401 Email gsesales barfieldinc com 56 101 01170 F Contact Nov 7 14 Page ii S BARFIELD ATTENTION Although every effort has been made to provide the e
48. i BARFIELD DPS350 USER MANUAL Caution Do not attempt to vent the Pitot System through the PITOT VENT valve while at altitude since this will cause the airspeed to increase b Slowly open the PITOT VENT valve while observing and maintaining the VSI below the programmed limits until the altitude has decreased to field elevation Note To ensure that a negative airspeed condition does not occur it is important to vent the Static pressure through the PITOT VENT valve Note If any of the programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test then refer to the PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment C Set the Tester to the following configuration before disengaging POWER I PITOT CONTROL Closed Knob fully clockwise Il STATIC CONTROL Closed Knob fully clockwise IIl CROSSBLEED CONTROL Open Knob fully counterclockwise IV PITOT VENTOpen Knob fully counterclockwise V STATIC VENT Open Knob fully counterclockwise d Turn off power and disconnect the STATIC and PITOT hoses from the tester s and aircraft s STATIC and PITOT ports E MACHMETER TESTS Use the procedures outlined in the COMBINED PITOT STATIC TEST section to set and change the airspeed and altitude Set an altitude in feet listed in the following table Set the corresponding airspeed in knots Verify that the MA
49. in Hg millibars mb or Pounds Per Square Inch Absolute PSIA e Display EPR with Altitude and Airspeed in Metric or English units e Display DPS350 Pressures Pt Ps amp Qc in PSIA Pounds Per Square Inch Absolute 56 101 01170 F Ch 4 Nov 7 14 Page 20 of 59 The flow diagram shows the route taken to change the displayed units of measure using the S BARFIELD DPS350 USER MANUAL LCD display menus MEASURED PRESS in Hg Pt in Hg DISPLAY IN EPR IN EPR IN Ps in Hg ENGLISH UNITS in Hg ENGLISH UNITS Qc in Hg A PY A A F1 MEN F1 F1 DISPLAY PARAMETER MAIN ADDITIONAL ADDITIONAL ADDITIONAL 3 A AA DISPLAY gt men gt UNITS LF3 9 enya TO MENU 2 9 MENU 3 PM MENU F2 F2 Note F4 button returns F2 F2 LCD display to previous Y y v l menu DISPLAY IN EPR IN DISPLAY IN psla METRIC UNITS MILLIBARS METRIC UNITS Figure 7 DISPLAY UNITS FLOWCHART 1 To change the displayed unit of measure press the MENU button The Main Menu appears Main Menu Display Units Limits Set View Enable Disab le Maintenance F4 Cancel CONTRAST y Cc F4 is used to return to the previous menu May require pressing several times to return to the parameter display PUMP F1 is used to select the unit of measure for
50. le or set values for the DPS350 protection limits a To begin enabling disabling the limits press the MENU switch The main menu appears F1 selects the type of units to be displayed e g PSIA in Hg ft kts etc F2 sets the protection limits for all parameters and to enable disable limit protection F3 used during maintenance to calibrate the tester F4 returns to the previous menu Press once to return to the previous screen parameter display b Press F2 to set the PITOT and STATIC protection limits The following LIMITS SET VIEW ENABLE DISABLE menu appears ONTRAST TEST dan AE CJ E 2 Note Protection values are stored in non volatile memory and the values displayed are those set in previous operations It is recommended that the operator always set their desired protection limits and ensure the protection limits are enabled before use on aircraft or pressure sensitive equipment 56 101 01170 F Ch 4 Nov 7 14 Page 25 of 59 S BARFIELD DPS350 USER MANUAL c To change the protection limits status press F3 The LIMIT ENABLE DISABLE menu appears Indicates the current limit Limit Protection Status Enabled protection status F1 Enable Disable Limit Protection Enabled or Disabled F2 N A F3 N A F4 Cancel LEAK CONTRAST TEST DEC INC c CT C3 CT E 3 d Press F1 to change the status of the
51. ltitude units 6 PRESSURE MEDIA An internal high reliability electric pump generates pressure and vacuum 7 TRANSDUCERS Latest Technology Transducers with the highest accuracy and stability commercially available 8 INPUT A C POWER Electronic switcher power supply module with auto input voltage detection circuitry for an A C input voltage of 115 230 VAC 47 400 Hz 9 FUSE PROTECTION Fuse overload protection is provided by two Slow Blow 2 amps fuses for normal 115 VAC power input 56 101 01170 F Ch 2 Nov 7 14 Page 12 of 59 i BARFIELD DPS350 USER MANUAL CHAPTER 3 THEORY OF OPERATION 1 PRESSURE VACUUM REQUIREMENTS The DPS350 internal pressure pump is capable of producing 650 knots and the vacuum pump can produce 55k ft in systems with high volumes 2 CONTROL VALVE OPERATION The Crossbleed admits pressure from the tank into the system and causes a reaction in both the tester airspeed display and the instrument being tested through the pitot connection The DPS350 Static Control Valve similarly controls the testers vacuum system The two vent valves equalize their respective systems with atmospheric pressure The Crossbleed Control Valve controls the pressure difference in the pressure and vacuum lines By operating the appropriate valve controllable pressure can be established in the Pitot pressure and or Static vacuum lines These pressures appear as readings on the DPS350 Altitude Airspeed ROC and M
52. mage to the equipment 4 Once the desired altitude is established close the STATIC CONTROL valve 5 To begin the Static Leak Test press the Leak Test Button F2 The Leak Test Mode menu appears XXX X Kts XXXXX Ft 0 Ft m F1 Static Test F2 Pitot Test F4 Cancel LEAK ri CONTRAST _TEST DEC n F4 MENU PUMP Note The XXX X Kts and XXXXX Ft indication are the airspeed and altitude from which the leak test was started 6 Press F1 for the Static Leak Check The following display appears 0 Kts XXXXX Ft 0 Ft m Allowing Ps to stabilize 0 60 SEC F4 Cancel K i Cc anii LEAI TEST DEC Fi H F3 ES F4 B MENU PUMP Note Do not press F1 until you are ready to do the Leak Check As soon as F1 is pressed the screen above appears with a 60 second countdown timer allowing time for stabilization of the static pressure The actual leak check measurement begins when the timer has completed the 60 second stabilization time 56 101 01170 F Ch 4 Nov 7 14 Page 38 of 59 i BARFIELD DPS350 USER MANUAL 7 After the 60 seconds stabilization time elapses the Static Leak Test screen appears and indicates the start of the actual leak test XXX X Kts XXXXX Ft 0 0 Ft m Elapsed Time XXX m F4 Cancel The Static Leak reading is LEAK p CONTRAST taken every 3 seconds and ELT me the results are displayed in Ft min H C F F2 F3 F4 MENU PUMP ks pnan _ l
53. nd user of this equipment with the most current and accurate information it may be necessary to revise this manual in the future Please be sure to complete and 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 address on file at Barfield as a registered user of this equipment to be able to obtain the service covered by the warranty Visit the company website http barfieldinc com for publication updates Please send the Registration Card to Barfield Inc P O Box 025367 Miami FL 33102 5367 USA 56 101 01170 F Att Nov 7 14 Page iii i BARFIELD DPS350 USER MANUAL REVISION RECORD CE ECO REV DATE DESCRIPTION OF CHANGE June 30 1998 Initial Preliminary Release December 15 1998 Preliminary March 5 1999 N A Revised to latest format and for ECO to MOD 260 00636 November 24 2003 B Added instruction for setting Pitot Leak Rate Limits Revised to latest format and for ECO to MOD 260 00673 July 9 2006 C Added instruction for setting Below Field Elevation Test and Above Field Elevation Test Updated Company Logo and List of Repair Facilities Chapters were reorganized n 260 01052 November 7 2014 Updated Barfield logo 260 00729 October 13 2008 56 101 01170 F REV Nov 7 14 Page iv i BARFIELD DPS350 USER MANUAL LIST OF APPROVED RE
54. ny of these five procedures as required until all datum points have been accomplished 56 101 01170 F Ch 4 Nov 7 14 Page 49 of 59 56 101 01170 F Nov 7 14 a e S BARFIELD DPS350 USER MANUAL Increase Altitude Slowly OPEN the CROSSBLEED CONTROL valve until the airspeed reaches 0 knots Ensure the CROSSBLEED CONTROL valve remains fully open Caution Do not attempt to vent the Pitot System through the PITOT VENT valve while reaching altitude since this will cause the airspeed to increase Adjust the altitude to the next datum point by slowly opening the STATIC CONTROL until the new Altitude datum point is achieved Note Opening the CROSSBLEED CONTROL valve bleeds the positive Pitot pressure into the Static channel thus reducing the Static Vacuum or Altitude Close the CROSSBLEED CONTROL valve Note The CROSSBLEED CONTROL valve is closed so the Pitot channel can establish a differential pressure airspeed Observe the aircraft and test set airspeed indications while slowly opening the PITOT CONTROL valve to the desired airspeed test point Note If any of the programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment Upon reaching the desired airspeed close the PITOT CONTROL valve Decrease Altitude
55. observing and maintaining the VSI below the programmed limits and establish the desired test altitude Note If one or more programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to the Protection Circuit Reset Instructions The Limit protection feature may be disabled during Tester only Leak Checks without causing damage to the equipment Upon reaching the desired altitude close the STATIC CONTROL valve fully Close the CROSSBLEED CONTROL valve Note The CROSSBLEED CONTROL valve is closed so the Pitot channel can establish a differential pressure Airspeed Observe the aircraft and test set airspeed indications while slowly opening the PITOT CONTROL valve to the desired airspeed test point Note If any of the programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test then refer to THE PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment e Upon reaching the desired airspeed close the PITOT CONTROL valve fully f To adjust the test set to the next datum point during a combined test perform among the following five procedures Increase or Decrease Altitude Increase or Decrease Airspeed or Adjustment of Both the one that is applicable to obtain the intended result Example to Decrease Airspeed follow steps of procedure 4 next page Repeat a
56. oisture or very high humidity dry it as soon as possible and temporarily store it in a dehumidified area 56 101 01170 F Ch 5 Nov 7 14 Page 59 of 59
57. r is in the following configuration before disengaging the power a PITOT CONTROL Closed b STATIC CONTROL Closed c CROSSBLEED CONTROL Open d PITOT VENT Open e STATIC VENT Open 56 101 01170 F Ch 4 Nov 7 14 Page 39 of 59 S BARFIELD DPS350 USER MANUAL C PITOT LEAK TEST 1 Close the PITOT VENT valve but leave the STATIC VENT valve open to ambient pressure Caution The STATIC VENT valve is left open to ambient to prevent damage to the aircraft altimeter Caution Do not use unnecessary force to adjust any test set valves Positive stop spacers have been installed on all needle valves to permit firm closing of the valves without damage However excessive force can overcome the knob setscrew resulting in valve damage Close the CROSSBLEED CONTROL valve Note The CROSSBLEED CONTROL valve is closed so the Pitot channel can establish a differential pressure airspeed Slowly open PITOT CONTROL valve and establish an airspeed of 300 knots or applicable test airsoeed when Leak Testing the aircraft Note If any of the programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test refer to the Protection Circuit Reset Instructions The Limit protection feature may be disabled during the Tester Only Leak Checks without causing damage to the equipment Close the PITOT CONTROL valve when the desired airspeed has been established To begin the Pitot Leak Test press the Leak Test
58. re functional under normal operation The display CONTRAST can be adjusted at anytime using the MENU key and F3 or F4 pressed simultaneously or through only F3 and F4 keys during normal operation Functions below the switches F1 through F4 are functional during the MENU or LEAK TEST modes Pressing F1 displays the maximum limits the DPS350 is currently programmed for available when Protection Limits are ENABLED Performs Displayed F1 operation when in Menu Mode Decreases the display s contrast Performs Displayed F3 operation when in Menu Mode XXXXX Ft 0 00 Mach Protection Enabled F1 View Limits CONTRAST INC Places the DPS350 in the Leak Measure Mode Performs displayed F2 operation when in Menu Mode Increases the display s contrast Performs Displayed F4 operation when in Menu Mode Turns Internal Pressure Vacuum Pump ON OFF at anytime This function occurs only after initialization is complete Places the DPS350 in the Menu Mode to change limits units or perform calibration The following procedures feature a step by step process determining how to setup and operate the tester using the menus 56 101 01170 F Nov 7 14 Ch 4 Page 18 of 59 i BARFIELD DPS350 USER MANUAL A PRELIMINARY SETUP 1 Initial Valve position for storage and initial power on a PITOT CONTROL Closed Knob fully clockwise b STATIC CONTROL Closed Kno
59. reaches 0 knots Ensure the CROSSBLEED CONTROL valve remains fully open Caution Do not attempt to vent the Pitot System through the PITOT VENT valve while at altitude since this will cause the Airspeed to increase b Readjust the altitude to the previous datum point by slowly opening the STATIC CONTROL until the previous Altitude datum point has been achieved Note Opening the CROSSBLEED CONTROL valve bleeds the positive Pitot pressure into the Static channel thus reducing the Static Vacuum or Altitude c Close the CROSSBLEED CONTROL valve Note The CROSSBLEED CONTROL valve is closed so the Pitot channel can establish a differential pressure airspeed d Observe the aircraft and test set airspeed indications while slowly opening the PITOT CONTROL valve to the desired airspeed test point e Upon reaching the desired airspeed completely close the PITOT CONTROL valve Ch 4 Page 51 of 59 i BARFIELD DPS350 USER MANUAL 5 Adjustment of both altitude and airspeed a Slowly open the CROSSBLEED CONTROL valve until the airspeed reaches 0 knots Ensure the CROSSBLEED CONTROL valve remains fully open Caution Do not attempt to vent the Pitot System through the PITOT VENT valve while at altitude since this will cause the airspeed to increase b Adjust the altitude to the next datum point by slowly opening while observing and maintaining the VSI below the programmed limits the STATIC CONTROL to increase or PITOT
60. sessing the necessary technical knowledge documentation special test equipment tooling and standards will adversely affect the accuracy capability of the DPS350 for testing the aircraft including the demanding Reduced Vertical Separation Minimum RVSM accuracy requirement 56 101 01170 F Intro Nov 7 14 Page 2 of 59 S BARFIELD DPS350 USER MANUAL LIMITED ONE YEAR WARRANTY BARFIELD INC BARFIELD warrants only to the original Purchaser of this product from BARFIELD or an authorized distributor that this product will be free from defects in material and workmanship under normal use and service for one year after date of purchase BARFIELD reserves the right before having any obligation under this limited warranty to inspect the damaged BARFIELD product and all costs of shipping the BARFIELD product to BARFIELD for inspection shall be borne solely by the Purchaser In order to recover under this limited warranty Purchaser must make claim to BARFIELD within 60 days of occurrence and must present acceptable proof of original ownership such as a purchase order invoice warranty card registration or other documentation BARFIELD deems acceptable for the product BARFIELD at its option shall repair or replace the defective unit covered by this warranty Please retain the dated sales receipt as evidence of the original purchaser s date of purchase You will need it for any warranty service In order to keep this limited warranty in effect t
61. sseeeesseeeeees 15 56 101 01170 F TOC Nov 7 14 Page vii CHAPTER 4 OPERATION GENERA M HQ CONTROL PANEL INSTRUCTIONS eee A xi ii ig pel see c tessieidasocetewenanseieensaesieeg B Setting the Displayed Units sseesseessse C Setting the Protection Limits seseeeeeeeee D Protection Circuit Reset Instructions E Displaying Firmware Version eesssssse TIESTSEI LEAK TES Disco seus us Se tS are teet eret A Preliminary Setup desesi cote erbaut tatit g sainte ke usados B Static Leak Test e C Pitot Leak Test 5o on eE HER T GER ones D Applying Leak Correction eeeeeeeeeeeeeese s AIRCRAFT TES Tiree A Preliminary Setup sseseeseseseeeesseresserrrnerrrnrerrrnressrrrnnnrrrn B Pitot System TeSD oath utrum pica adnucnnonacarpueespecananguss 1 Leak SS Ic EAE CEP ct C Static System TOS eimi eis ted Ue EI Sene e Even ERES EE 1 Leak TeSt c 2 Altitude Checks eeseeeseseeeeeeeeeeee D Combined Pitot Static Test sesssssesss 1 Combined Altitude Airspeed Tests 2 Below Field Elevation Test 3 Above Field Elevation Test 4 Completion of Combined Pitot Static T
62. tatic hoses Each test set is completely calibrated and tested before shipment To ensure the integrity of the tests the DPS350 should be leak checked before each use Caution Do not use unnecessary force to adjust any test set valves Positive stop spacers have been installed on all metering valves to permit firm closing of the valves without damage However excessive force can overcome the knob set screw resulting in valve damage 2 CONTROL PANEL INSTRUCTIONS The DPS350 is equipped with an easy to use Menu Driven Display designed to assist the technician during setup and testing Each Menu Display gives the user a set of options controlled by four function keys The following figure describes the parameter display and function keys on the DPS350 control panel A sign appears if the Displays the simulated pressure altitude in relation to 29 92 in Hg DPS350 experiences a complete loss of calibration 0 Kts XXXXX Ft 0 00 Mach 0 Ft m Protection Enabled F1 View Limits Protection Status Enabled Disabled F1 View Limits is displayed only when the depends on how it was set in previous protection limits are enabled operations Pressing F1 displays the maximum limits the DPS350 is currently programmed for 56 101 01170 F Ch 4 Nov 7 14 Page 17 of 59 DPS350 USER MANUAL FUNCTION KEYS F1 F2 F3 F4 S BARFIELD The PUMP key MENU key and LEAK TEST key a
63. tion limits and enable the protection circuits before each use 56 101 01170 F Ch 4 Nov 7 14 Page 31 of 59 i BARFIELD DPS350 USER MANUAL C To set the Pitot Port protection limits press F2 The Pitot Limits Menu appears CONTRAST 4 TEST cc INC IP PE E F1 sets the Airspeed protection limits F2 setsthe Mach protection limits F3 sets the Leak Rate limits used during Leak Testing FA is used to return to the previous menu d To change airspeed or Mach limits press F1 for Airspeed or F2 for Mach protection One of the following Airspeed Mach Limit menus appears Airspeed Limit 2 XXX Kts Increase in 10 Kts Increments Decrease in 10 Kts Increments Save New Value F4 Cancel LEAK EE CONTRAST 4 TEST DEC INC F2 F3 F4 MENU F1 Airspeed Limit Menu Mach Limit X X Increase in 0 1 Mach Increments Decrease in 0 1 Mach Increments Save New Value F4 Cancel CONTRAST TEST pc 3t CBE F2 Mach Limit Menu Note XXX and X X represent values previously set 56 101 01170 F Ch 4 Nov 7 14 Page 32 of 59 i BARFIELD DPS350 USER MANUAL e F1 increases and F2 decreases the Airspeed Limits in 10 kts increments or the Mach Limit in 0 1 increments To scroll up down quickly press and hold in the F1 or F2 pushbutton Note Press F4 to return to the pitot limits menu without saving any changes Once the desired Airspeed or M
64. uracy at very low airspeeds below 50 kts may suffer 5 Press the PUMP button to turn the internal Pressure Vacuum Pump ON Note The PUMP can be turned ON OFF as necessary Since the transducers used in the test set are resistant to damage typically affecting Aneroid Instruments the Protection Limits may be disabled during the DPS350 leak tests to reduce the required time it takes to check the condition of the test set The protection limits ensure that no damage to the Aircraft s Pitot Static systems occur during testing B STATIC LEAK TEST 1 Close the STATIC and PITOT Vents 2 Ensure the CROSSBLEED CONTROL valve is open Caution The CROSSBLEED CONTROL valve must be open while the Static Channel Altitude is changed The CROSSBLEED CONTROL valve bleeds the Static and Pitot Pressures together preventing an undesirable differential pressure or airspeed from being created on the Pitot Channel 56 101 01170 F Ch 4 Nov 7 14 Page 37 of 59 S BARFIELD DPS350 USER MANUAL 3 Slowly open the STATIC CONTROL valve while observing and maintaining the VSI below the programmed limits and establish an altitude of 20 000 feet or applicable test altitude when Leak Testing aircraft Note If a programmed limit VSI Airspeed Altitude Mach or Leak Rate is exceeded during the test refer to PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature may be disabled during the Tester Only Leak Checks without causing da
65. wing as a reference guide for setting the STATIC CONTROL using altitude if applicable Table 3 shows the relation between altitude and the corresponding pressure in in Hg ALTITUDE feet didis fs SAURE Table 4 Altitude vs Manifold Pressure c Use the STATIC CONTROL to decrease the pressure in Hg or the STATIC VENT valve to increase the pressure in Hg to the next test points d After testing has been completed return the test set to ambient pressures as outlined in SHUTDOWN PROCEDURES 5 SHUTDOWN PROCEDURES A TEST SET SHUTDOWN PROCEDURE 1 After testing has been completed slowly open the CROSSBLEED CONTROL valve until the airspeed reaches 0 knots Caution Do not attempt to vent the Pitot System through the PITOT VENT valve while at altitude since this will cause the airspeed to increase 2 Fully open the CROSSBLEED CONTROL valve 56 101 01170 F Ch 4 Nov 7 14 Page 57 of 59 3 S BARFIELD DPS350 USER MANUAL Slowly open the PITOT VENT valve while observing and maintaining the VSI below the programmed limits until the altitude has decreased to field elevation Note To ensure that a negative airspeed condition does not occur it is important to vent the static pressure through the PITOT VENT valve Note If one or more programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test then refer to the PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature ma
66. y be disabled during Tester Only Leak Checks without causing damage to the equipment Ensure that the Tester is in the following configuration before disengaging POWER a PITOT CONTROL Closed Knob fully clockwise b STATIC CONTROL Closed Knob fully clockwise c CROSSBLEED CONTROL Open Knob fully counterclockwise d PITOT VENT Open Knob fully counterclockwise e STATIC VENT Open Knob fully counterclockwise Switch Power OFF and disconnect the STATIC and PITOT hoses from the STATIC and PITOT ports of the tester and aircraft 56 101 01170 F Ch 4 Nov 7 14 Page 58 of 59 i BARFIELD DPS350 USER MANUAL CHAPTER 5 RECEIVING SHIPPING AND STORAGE 1 RECEIVING No special unpacking procedures are necessary It is recommended that the factory shipping container and packing materials be retained should it become necessary for any reason to re ship the Test Set such as for the O E M recertification It is also recommended that the Test Set undergo a leak check upon receipt and its carrying case should be carefully inspected for damage If the test set has an excessive leak or is damaged immediately notify the carrier and the manufacturer 2 SHIPPING Use standard delicate electronic equipment packaging procedures when packing the Test Set for reshipment 3 STORAGE A Place a four ounce bag of desiccant inside the case B Close and latch the cover C Store in a cool dry place Note Should the test set become exposed to m
67. y clockwise IIl CROSSBLEED CONTROL Open Knob fully counterclockwise IV PITOT VENT Open Knob fully counterclockwise V STATIC VENT Open Knob fully counterclockwise Caution Before pressurizing the aircraft Pitot and or Static systems ensure that the Limit Protection is enabled and the Altitude and Rate of Climb VSI limits are set to the appropriate values Make sure that the aircraft instrument limits are never exceeded Ensure the aircraft altimeter is set to 29 92 in Hg Close the STATIC and PITOT VENT valves Insure the CROSSBLEED CONTROL valve is fully open Caution The CROSSBLEED CONTROL valve must be open while the Static Channel Altitude is changed The CROSSBLEED CONTROL valve bleeds the Static and Pitot Pressures together preventing a differential pressure or airspeed from being created on the Pitot Channel 56 101 01170 F Ch 4 Nov 7 14 Page 46 of 59 i BARFIELD DPS350 USER MANUAL e Slowly open the STATIC CONTROL valve while observing and maintaining the VSI below the programmed limits and establish the desired test altitude Note If any of the programmed limits VSI Airspeed Altitude Mach or Leak Rate are exceeded during the test then refer to the PROTECTION CIRCUIT RESET INSTRUCTIONS The Limit protection feature may be disabled during Tester Only Leak Checks without causing damage to the equipment f To adjust the altitude to the next datum point slowly open the STATIC CONTROL while obs

DPS350 Pitot-Static Test Set

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