Baker Hughes Druck DPI 610A User manual

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DPI 610A
Aeronautical Portable Pressure Calibrator
Instruction Manual

Copyright 1998 Baker Hughes Company.
English–DPI610A Instruction Manual | 1
Safety
The manufacturer has designed this equipment to be safe when operated using the procedures
detailed in this manual. Do not use this equipment for any other purpose than that stated.
This publication contains operating and safety instructions that must be followed to ensure safe
operation and to maintain the equipment in a safe condition. The safety instructions are either
warnings or cautions issued to protect the user and the equipment from injury or damage.
Use suitably qualified* technicians and good engineering practice for all procedures in this
publication.
Maintenance
The equipment must be maintained using the procedures in this publication. Further
manufacturer’s procedures should be carried out by authorized service agents or the
manufacturer’s service departments.
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For technical advice contact the manufacturer.
Symbols
WARNING Before operating this instrument, read the safety instructions.
Do not apply pressures greater than the maximum safe working pressure to this
equipment.
* A qualified technician must have the necessary technical knowledge, documentation, special test
equipment and tools to carry out the required work on this equipment.
Symbol Description
This equipment meets the requirements of all relevant European safety directives. The
equipment carries the CE mark.
This symbol, on the equipment, indicates a warning and that the user should refer to the
user manual.
Ce symbole, sur l'appareil, est un avertissement qui indique que l'utilisateur doit consulter
le manuel d'utilisation.
Do not dispose of this product as household waste. Use an approved organization that
collects and/or recycles waste electrical and electronic equipment. For more information,
contact one of these:
- Our customer service department: Druck.com
- Your local government office.

Copyright 1998 Baker Hughes Company.
2 | DPI610A Instruction Manual–English
Specification
Note: For further general specification and functionality details refer to the standard DPI 610/615
Series Portable Calibrator data sheet.
Parameter Value
Pressure Safety Maximum Working Pressure 2 x full-scale
Ranges Altitude -3000 to 50,000 ft
Airspeed 0 to 600 knots
Precision over the airspeed range:
200 knots ±3 knots
400 knots ±0.7 knots
over the altitude range:
sea level ±14 ft
10,000 ft ±18 ft
30,000 ft ±36 ft
Precision includes linearity, hysteresis and repeatability, 12 months
measurement stability.
Temperature Effects ±0.004% of reading/°C (averaged over -10° to +40°C w.r.t. 20°C)
±0.002% of reading/°F (averaged over +14° to 104°F w.r.t. 68°F)
Power Supply Batteries 6 x 1.5 V C-cells, alkaline (up to 60 hours
nominal use at 20°C)
Rechargeable Ni-Cad battery pack (20 hours nominal use)
supplied with charger/adaptor, supplies
power to instrument while charging batteries.
Environment Operating Temperature: -10°C to 50°C (+14°F to 122°F)
Calibrated Temperature: -10°C to 40°C (+14°F to 104°F)
Ingress Protection IP54 (NEMA 4)
Physical Size: 300 x 170 x 140 mm (11.8" x 6.7" x 5.5")
Weight: 3 kg (6.6 lb)

Copyright 1998 Baker Hughes Company.
English–DPI610A Instruction Manual | 3
Contents
1. Introduction 4
1.1 Pneumatic Controls 5
1.2 Electrical Connections 5
1.3 Maximum Instrument Ratings 5
2. Operation 6
2.1 Altitude Switch Tests 6
2.1.1 Method (Accessible Switch Contacts) 7
2.1.2 Method (Non-accessible Switch Contacts) 8
2.2 Altitude Leak Tests 8
2.2.1 Method 9
2.3 Airspeed Switch Tests 9
2.3.1 Method (Accessible Switch Contacts) 10
2.3.2 Method (Non-accessible Switch Contacts) 11
2.4 Airspeed Leak Tests 11
2.4.1 Method 12
1. Introduction
This 2 bar absolute (59 inHg absolute) version of the DPI 610 provides manual generation of
pressure and vacuum for testing of aircraft Pitot and Static systems. It has a special pneumatic
manifold and output port assembly, the regulated output of the hand-pump prevents
overpressure/vacuum of the aircraft’s Pitot and Static systems.
The generated pressure or vacuum vents to atmosphere through the vent port, the user controls
the vent rate to protect the aircraft’s systems and instruments using the release valve.
A manual let-down valve, fitted directly in the output port, allows the system to be manually vented
(returned to ground level) by the user when the pressure or vacuum has vented to a safe
operational level i.e. < 1500 ft. The aeronautical option (AERO) can be accessed only from the

Copyright 1998 Baker Hughes Company.
4 | DPI610A Instruction Manual–English
TASK menu. All other functions and tasks of the DPI 610 are available on this version of the
DPI 610 instrument.
Figure 1: DPI 610A Calibrator Controls
1 Output port (AN4) to pitot or static system. 2 Manual let-down valve.
3 Electrical (switch) inputs. 4 Release valve - releases system pressure/vacuum at a
controlled rate.
5 Vent port. 6 Selects either positive (pitot) or negative (static)
pressure.
7 Hand-pump - generates either positive (pitot) or
negative (static) pressure.
8 Fine adjustment of either positive (pitot) or negative
(static) pressure.
12
3
4
5
6
7
8

Copyright 1998 Baker Hughes Company.
English–DPI610A Instruction Manual | 5
1.1 Pneumatic Controls
An AN4 connector provides the output connection. The instrument is designed to operate with
5meters of 6 mm bore pipe attached.
Figure 2: DPI 610A Pneumatic Controls
1.2 Electrical Connections
Refer to publication K0415 for the fitting of batteries and the charging of batteries.
1.3 Maximum Instrument Ratings
The following table shows the maximum measurement ratings of the standard instrument that
should not be exceeded. Pressure over range (120% of FS) is indicated by a flashing pressure
display. Voltage or current over range (110% of max) causes either the voltage or current display
to flash.
Note: When the AERO task is selected, the display flashes if the voltage or current input over
ranges by 110% of the above maximum values. The pressure display flashes at altitudes below
-3000 ft and above 50,000 ft or at airspeeds greater than 600 knots, depending on the mode
selected.
Parameter Maximum Rating
Pressure 120% of full-scale
Voltage 50 VDC
Current 55 mA DC
OPEN
CLOSE
OPEN
CLOSED

Copyright 1998 Baker Hughes Company.
6 | DPI610A Instruction Manual–English
2. Operation
Using this version of the DPI 610 instrument, a switch test and leak test can be carried out on an
aircraft pitot or static system.
To select the aeronautical option from task menu, proceed as follows:
2.1 Altitude Switch Tests
Select TASK, AERO:
• Select ALTITUDE, SWITCH TEST as follows:
• If necessary, SELECT AERO UNITS as follows:
• If required, apply pressure of the day correction (POD), by selecting POD ADJUST as
follows:
• Apply QFE pressure reading as POD correction as follows:
WARNING Observe safety precautions stated in local orders and the aircraft
or equipment servicing procedures.
TASK
TASKS
BASIC
P - I
P - P
P - V
I - P
SELECT TASK
TASKS
SELECT TASK
ADVANCED
AERO
USER TASKS
SELECT TASK
SELECT TASK
ALTITUDE
SWITCH TEST
LEAK TEST
AIRSPEED
SWITCH TEST
LEAK TEST
INPUT
SWITCH TEST
CONTACT STATE
POD = Off
ALTITUDE
RUN CHANGE
UNITS
SELECT AERO
UNITS
ft
m
hm
SELECT UNITS
SETUP SETTINGS
CALIBRATION
SETUP
SELECT OPTION SELECT OPTION
DRY CELL LEVEL
BACKLIGHT
STORE MODE
CONTRAST
SETTINGS
UNITS
LANGUAGE
RS232
POWERDOWN
CALIBRATION
POD ADJUST

Copyright 1998 Baker Hughes Company.
English–DPI610A Instruction Manual | 7
Note: The display can show either: POD = Off or POD = current value (QFE pressure
reading). The POD RESET key (F2) sets the current POD correction to Off.
2.1.1 Method (Accessible Switch Contacts)
1. Connect the instrument to the static system and connect the altitude switch as shown.
Ensure that the pitot system is vented to atmosphere before starting the test:
Note: Contacts must be potential free.
Figure 3: Altitude Switch Test Connections
2. Select negative pressure and close the release valve.
3. Close the manual let-down valve.
4. Press the RUN key (F1) and operate the hand-pump, continue until the switch operates:
mbar
POD = Off
POD Correction mbar
POD Correction
POD = Off
WARNING
VENT SYSTEM
BEFORE SETTING POD
WARNING
VENT SYSTEM
BEFORE SETTING POD
WARNING
VENT SYSTEM
BEFORE SETTING POD
CHANGE POD
VALUE
POD RESET CHANGE POD
VALUE
POD RESET CHANGE POD
VALUE
POD RESET
ENTER VALUE
mbar
POD Correction
POD = 1002.85
ft
F2F1
S
Applied Static System Pressure
Vent Pitot System (Atmospheric Pressure)
Altitude Switch
Select
Negative (-)
Pressure
SWITCH TEST
CONTACT STATE
POD = 1008.63
ALTITUDE
RUN
ft ft ft
SWITCH TEST
CONTACT STATE
POD = Off
ALTITUDE
RUN MANUAL
OPERATION
STOP MANUAL
OPERATION
STOP
POD = Off
ALTITUDE
POD = Off
ALTITUDE
CONTACT STATE
CLOSED AT 5550 ft
OPENED AT 5325 ft
HYSTERESIS 225 ft
SWITCH TEST SWITCH TEST
CONTACT STATE
CLOSED AT 5550 ft

Copyright 1998 Baker Hughes Company.
8 | DPI610A Instruction Manual–English
5. Carefully open the release valve and allow altitude to decrease until the switch operates
again. The display shows the operating pressures and hysteresis.
6. Record the displayed operating data.
7. Allow the indicated altitude to decrease until it is below 1500 ft.
8. Slowly open the manual let-down valve to return the system to ground level.
9. To perform another switch test press RUN (F1).
10. To cancel switch test mode, press TASK.
2.1.2 Method (Non-accessible Switch Contacts)
When the altitude switch contacts cannot be connected to the instrument, an external indicator or
annunciator must be used as the indication of pressure switch operation. The user, on receipt of
an indication of switch operation, presses the MANUAL OPERATION (F2) key:
1. Connect the instrument to the static system. Ensure that the pitot system is vented to
atmosphere before starting the test:
2. Select negative pressure and close the release valve.
3. Close the manual let-down valve.
4. Press the RUN key (F1) and operate the hand-pump, continue until indication of switch
operation and immediately press (F2).
5. Carefully open the release valve and allow the altitude to decrease until the indication of
switch operation and immediately press (F2).
6. Record the displayed operating data.
7. Allow the indicated altitude to decrease until it is below 1500 ft.
8. Slowly open the manual let-down valve to return the system to ground level.
9. To perform another switch test, press RUN (F1).
10. To cancel switch test mode, press TASK.
2.2 Altitude Leak Tests
Select TASK, AERO:
• Select ALTITUDE LEAK TEST:
ft ft ft
SWITCH TEST
CONTACT STATE
POD = Off
ALTITUDE
RUN MANUAL
OPERATION
STOP MANUAL
OPERATION
STOP
POD = Off
ALTITUDE
POD = Off
ALTITUDE
CONTACT STATE
CLOSED AT 5550 ft
OPENED AT 5325 ft
HYSTERESIS 225 ft
SWITCH TEST SWITCH TEST
CONTACT STATE
CLOSED AT 5550 ft
SELECT TASK
SELECT TASK
ALTITUDE
SWITCH TEST
LEAK TEST
AIRSPEED
SWITCH TEST
LEAK TEST

Copyright 1998 Baker Hughes Company.
English–DPI610A Instruction Manual | 9
• If necessary, SELECT AERO UNITS:
2.2.1 Method
1. Connect the instrument to the static system and, if required, apply a pressure correction
value of the pressure of the day (POD) as detailed on page 6.
2. Close the release valve and manual let-down valve, using the hand-pump, generate the
required altitude.
3. Set WAIT and DURATION of the leak test times:
4. When ready, press the RUN key (F2):
Note: Initially, the WAIT period counts-down, followed by the TIMING period. The START
ALT is recorded as soon as the timing period starts. At the end of the test the display shows
the complete details of the test.
5. Record the displayed operating data.
6. To perform another leak test, use the hand-pump to generate a new system altitude and
press RUN (F2) again.
7. On completion of the test, allow the altitude to decrease until it is below 1500 ft.
8. Slowly open the manual let-down valve to return the system to ground level.
9. To exit or cancel leak test mode, press TASK.
2.3 Airspeed Switch Tests
Select TASK, AERO:
SELECT AERO
UNITS
ft/minute
m/minute
ft/second
m/second
hm/minute
SELECT UNITS
INPUT
RUNCHANGE
VALUE
ALTITUDE
WAIT 60 secs
DURATION 60 secs
START ALT. ft
STOP ALT. ft
ALT. CHANGE ft
LEAK RATE ft/min
ft
ft ft
RUNCHANGE
VALUE
ALTITUDE
WAIT 60 secs
DURATION 60 secs
START ALT. ft
STOP ALT. ft
ALT. CHANGE ft
LEAK RATE ft/min
SET WAIT TIME SET DURATION
RUNCHANGE
VALUE
ALTITUDE
WAIT 60 secs
DURATION 60 secs
START ALT. ft
STOP ALT. ft
ALT. CHANGE ft
LEAK RATE ft/min
ft ft
TIMING
ft
WAITING
ALTITUDE ALTITUDE
POD = 1002.85 POD = 1002.85
STOP STOP RUN
CHANGE
VALUE
ALTITUDE
WAIT 60 secs
DURATION 60 secs
START ALT. 13354 ft
STOP ALT. 13322 ft
ALT. CHANGE -32 ft
LEAK RATE -32 ft/min

Copyright 1998 Baker Hughes Company.
10 | DPI610A Instruction Manual–English
• Select AIRSPEED SWITCH TEST:
• If necessary, SELECT AERO UNITS:
2.3.1 Method (Accessible Switch Contacts)
1. Connect the instrument to the pitot system and connect the airspeed switch as shown.
Ensure that the static system is vented to atmosphere before starting the test.
Note: Contacts must be potential free.
Figure 4: Airspeed Switch Test Connections
2. Ensure that positive pressure is selected and close the release valve.
3. Close the manual let-down valve.
4. Zero the airspeed reading by pressing the ZERO key.
SELECT TASK
SELECT TASK
ALTITUDE
SWITCH TEST
LEAK TEST
AIRSPEED
SWITCH TEST
LEAK TEST
INPUT
SWITCH TEST
CONTACT STATE
AIRSPEED
RUN
SELECT UNITS
SELECT AERO
UNITS
kts
kmh
mph
AIRSPEED kts
F2F1
P
S
Select
Positive (+)
Pressure
Applied Pitot System Pressure
Vented Pitot System
(Atmospheric Pressure)
Airspeed Switch
SWITCH TEST
CONTACT STATE
RUN

Copyright 1998 Baker Hughes Company.
English–DPI610A Instruction Manual | 11
5. Press the RUN key (F1) and operate the hand-pump, continue until the switch operates:
6. Carefully open the release valve and allow airspeed to decrease until the switch operates
again. The display shows the operating airspeeds and hysteresis.
7. Record the displayed operating data.
8. Allow the airspeed to decrease until it is below 80 kts.
9. Slowly open the manual let-down valve to return system to zero (ground level).
10. To perform another switch test, press RUN (F1) and repeat the above procedure.
11. To cancel switch test mode, press TASK.
2.3.2 Method (Non-accessible Switch Contacts)
When the airspeed switch contacts cannot be connected to the instrument, an external indicator
or annunciator must be used as indication of airspeed switch operation. The user, on receipt of
an indication of switch operation, presses the MANUAL OPERATION (F2) key:
1. Connect the instrument to the pitot system as shown in Figure 4. Ensure that the static
system is vented to atmosphere before starting the test.
2. Ensure that positive pressure is selected and close the release valve.
3. Close the manual let-down valve.
4. Zero the airspeed reading by pressing the ZERO key.
5. Press the RUN key (F1) and operate the hand-pump, continue until the switch operates and
immediately press (F2).
6. Carefully open the release valve and allow the airspeed to decrease until the switch operates
again and immediately press (F2). The display shows the operating airspeeds and
hysteresis.
7. Record the displayed operating data.
8. Allow the airspeed to decrease until it is below 80 kts.
9. Slowly open the manual let-down valve to return system to zero (ground level).
10. To perform another switch test, press RUN (F1).
11. To cancel switch test mode, press TASK.
2.4 Airspeed Leak Tests
Select TASK, AERO:
kts kts kts
SWITCH TEST
CONTACT STATE
AIRSPEED
RUN MANUAL
OPERATION
STOP MANUAL
OPERATION
STOP
AIRSPEED AIRSPEED
CONTACT STATE
CLOSED AT 550 kts
OPENED AT 525 kts
HYSTERESIS 25 kts
SWITCH TEST SWITCH TEST
CONTACT STATE
CLOSED AT 550 kts
kts kts kts
SWITCH TEST
CONTACT STATE
AIRSPEED
RUN MANUAL
OPERATION
STOP MANUAL
OPERATION
STOP
AIRSPEED AIRSPEED
CONTACT STATE
CLOSED AT 550 kts
OPENED AT 525 kts
HYSTERESIS 25 kts
SWITCH TEST SWITCH TEST
CONTACT STATE
CLOSED AT 550 kts

Copyright 1998 Baker Hughes Company.
12 | DPI610A Instruction Manual–English
• Select AIRSPEED LEAK TEST:
• If necessary, SELECT AERO UNITS:
2.4.1 Method
1. Connect the instrument to the pitot system as shown in Figure 4. Ensure that the static
system is vented to atmosphere before starting the test.
2. Close the release valve and manual let-down valve and, using the hand-pump, generate the
required airspeed.
3. Set WAIT and DURATION of leak test times:
4. When ready, press the RUN key (F2):
Note: Initially, the WAIT period counts down, followed by the timing period. The START
SPEED is recorded as soon as the timing period starts. At the end of the test the display
shows the complete details of the test.
5. Record the displayed operating data.
6. Allow the airspeed to decrease until it is below 80 kts.
7. Slowly open the manual let-down valve to return the system to zero (ground level).
SELECT TASK
SELECT TASK
ALTITUDE
SWITCH TEST
LEAK TEST
AIRSPEED
SWITCH TEST
LEAK TEST
SELECT AERO
UNITS
kts/min
km/hr/min
mls/hr/min
SELECT UNITS
INPUT
RUNCHANGE
VALUE
AIRSPEED
WAIT 60 secs
DURATION 60 secs
START SPEED kts
STOP SPEED kts
SPEED CHANGE kts
LEAK RATE kts/m
kts
kts kts
RUNCHANGE
VALUE
AIRSPEED
WAIT 60 secs
DURATION 60 secs
START SPEED kts
STOP SPEED kts
SPEED CHANGE kts
LEAK RATE kts/m
SET WAIT TIME SET DURATION
RUNCHANGE
VALUE
AIRSPEED
WAIT 60 secs
DURATION 60 secs
START SPEED kts
STOP SPEED kts
SPEED CHANGE kts
LEAK RATE kts/m
kts kts
TIMING
kts
WAITING
AIRSPEED AIRSPEED
STOP STOP RUN
CHANGE
VALUE
AIRSPEED
WAIT 60 secs
DURATION 60 secs
START SPEED 354 kts
STOP SPEED 322 kts
SPEED CHANGE -32 kts
LEAK RATE -32 kts/m

Copyright 1998 Baker Hughes Company.
English–DPI610A Instruction Manual | 13
8. To perform another leak test, use the hand-pump to generate a new airspeed and press RUN
(F2) again.
9. To exit or cancel leak test mode, press TASK.

Copyright 1998 Baker Hughes Company.
14 | DPI610A Instruction Manual–English

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K0237 Revision A | English
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party product and company names are trademarks of their respective holders.
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