GE Druck DPI 610 Manual de usuario

Druck DPI 610

Portable Pressure Calibrator

Aeronautical version

User manual - K0237

Measurement & Control Solutions

Advanced Test Equipment Rentals

www.atecorp.com 800-404-ATEC (2832)

i K0237 Issue No. 2

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.

Pressure

Do not apply pressures greater than the safe working pressure to this equipment.

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.

www.gesensinginspection.com

For technical advice contact the manufacturer.

* A qualified technician must have the necessary technical knowledge,

documentation, special test equipment and tools to carry out the required work

on this equipment.

Symbols

This equipment meets the requirements of all relevant European safety

directives. The equipment carries the CE mark.

This symbol, on the instrument, indicates that the user should refer to

the user manual. This symbol, in this manual, indicates a hazardous

operation.

This symbol, on the instrument, indicates do not throw-away in

domestic bin, hazardous material, dispose correctly in accordance with

local regulations.

K0237 Issue No. 2 ii

Specification

Safe working pressure

2 x full-scale

Ranges

Altitude -3000 to 50,000ft

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

10,000ft ±18 ft

30,000ft ±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 NiCad 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)

Sealing

Sealed to IP54 (NEMA 4)

Physical

Size: 300 x 170 x 140 mm (11.8” x 6.7” x 5.5”)

Weight: 3 kg (6.6lb)

For further general specification and functionality details refer to the standard DPI

610/615 Series Portable Calibrator data sheet.

Contents

Introduction 1

Pneumatic Controls 2

Electical Connections 2

Operation 3

Altitude Switch Tests 3

Altitude Leak Tests 6

Airspeed Switch Tests 8

Airspeed Leak Tests 10

1 K0237 Issue No. 2

Introduction (Figure C1)

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 TASK menu. All other functions and tasks of the DPI 610 are

available on this version of the DPI 610 instrument.

Figure C1 Aeronautical Option Controls

Hand-pump

Generates either positive (pitot)

or negative (static) pressure

Selects either

positive (pitot)

or negative (static) pressure

Vent port

Release Valve

Releases system pressure/vacuum

at a controlled rate

Electrical (switch)

inputs

Manual let-down

valve

Output port (AN4)

To pitot or static

system

Fine adjustment of

either positive (pitot)

or negative (static)

pressure

K0237 Issue No. 2 2

Pneumatic Controls (Figure C2)

An AN4 connector provides the output connection.

Note:

The instrument is designed to operate with 5 metres of 6mm bore pipe attached.

Figure C2 - Pneumatic Controls

Electrical Connections

Refer to publication K0415 pages 6 and 7 for the fitting of batteries and the charging of

batteries.

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.

OPEN

3 K0237 Issue No. 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.

WARNING:

OBSERVE SAFETY PRECAUTIONS STATED IN LOCAL ORDERS AND

THE AIRCRAFT OR EQUIPMENT SERVICING PROCEDURES.

To select the aeronautical option from task menu, proceed as follows:

Altitude Switch Tests

Select TASK, AERO:

Select ALTITUDE, SWITCH TEST as follows:

If necessary, SELECT AERO UNITS as follows.

TASKS

P-I

BASIC

I-P

P-V

P-P

TASKS

AERO

ADVANCED

USER TASKS

TASK

SELECT TASK SELECT TASK

K0237 Issue No. 2 4

If required, apply pressure of the day correction (POD), by selecting POD ADJUST

as follows:

Apply QFE pressure reading as POD correction as follows:

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.

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 C3 - Altitude Switch Test Connections

(2) Select negative pressure and close the release valve.

SETUP

SETTINGS

STORE MODE

CONTRAST

BACKLIGHT

DRY CELL LEVEL

SETTINGS

CALIBRATION

UNITS

RS232

CALIBRATION

POD ADJUST

LANGUAGE

SETUP POWERDOWN

SELECT OPTION SELECT OPTION

POD=Off

POD Correction

CHANGE POD

VALUE

POD RESET

mbar

POD = 1002.85

POD Correction

CHANGE POD

VALUE

POD RESET

mbar

POD=Off

POD Correction

CHANGE POD

VALUE

POD RESET

mbar

ENTER VALUE

WARNING

VENT SYSTEM

BEFORE SETTING POD

WARNING

VENT SYSTEM

BEFORE SETTING POD

WARNING

VENT SYSTEM

BEFORE SETTING POD

ALTITUDE

F2F1

POD = 1008.63

RUN

SWITCH TEST

CONTACT STATE

Select

Negative (-)

Pressure

Applied Static System Pressure

Vent Pitot System (Atmospheric Pressure)

Altitude Switch

5 K0237 Issue No. 2

(3) Close the manual let-down valve.

(4) Press the RUN key (F1) and operate the hand-pump, continue until the switch

operates:

(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 1500ft.

(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.

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).

CONTACT STATE

POD=Off

RUN

ALTITUDE ft

CONTACT STATE

POD=Off

STOP MANUAL

ALTITUDE ft

OPERATION

CLOSED AT 5550 ft

CONTACT STATE

POD=Off

STOP MANUAL

ALTITUDE ft

OPERATION

CLOSED AT 5550 ft

OPENED AT 5325

HYSTERESIS 225

SWITCH TEST SWITCH TEST SWITCH TEST

K0237 Issue No. 2 6

(6) Record the displayed operating data.

(7) Allow the indicated altitude to decrease until it is below 1500ft.

(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.

Altitude Leak Tests

Select TASK, AERO:

Select ALTITUDE LEAK TEST:

If necessary, SELECT AERO UNITS:

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:

SET WAIT TIME SET DURATION

CION

WAIT

DURATION

START ALT.

STOP ALT.

ALT. CHANGE

LEAK RATE

secs

ft/m

ALTITUDE

CHANGE

VALUE RUN

CION

WAIT

DURATION

START ALT.

STOP ALT.

ALT. CHANGE

LEAK RATE

secs

ft/m

ALTITUDE

CHANGE

VALUE RUN

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