GE Druck ADTS 2 Series Use and care manual

GE
Sensing
Druck ADTS 2XX Air Data Test Set
Calibration Manual K0425
XX

© The General Electric Company. All rights reserved

i Druck ADTS 2XX Calibration Manual
K0425 Issue No. 2
Introduction
üThis technical manual provides calibration instructions for the Air Data Test System.
Scope
üThis technical manual contains the calibration instructions for the calibration technician of
this equipment.
Safety
üThe 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.
üThis 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.
üUse qualified* calibration technicians and good engineering practice for all procedures in this
publication.
Pressure
üDo not apply pressure greater than the maximum safe working pressure to the equipment.
Toxic Materials
üThere are no known toxic materials used in this equipment.
Maintenance
üThe equipment must be maintained using the manufacturer’s procedures and should be
carried out by authorized service agents or the manufacturer’s service departments.
Technical Advice
üFor technical advice contact the manufacturer or subsidiary.
* A qualified calibration technician must have the necessary technical knowledge, documentation,
special test equipment and tools to carry out calibration work on this equipment.
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.
Do not dispose of this product as household waste. Use an approved organisation
that collects and/or recycles waste electrical and electronic equipment. For more
information, contact one of these:
üour customer service department (contact us at www.gesensing.com)
üyour local government office

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Approved Service Agents
For a list of approved service agents visit our website: www.gesensing.com

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TABLE OF CONTENTS
Preliminary pages
Introduction ..........................................................................................................................................................................................................................i
Scope ..........................................................................................................................................................................................................................i
Approved Service Agents....................................................................................................................................................................................................ii
Table of contents (this table)............................................................................................................................................................................................iii
List of Tables ........................................................................................................................................................................................................................iii
ATEX Certified Advanced Hand Terminal...................................................................................................................................................................iv
Abbreviations .........................................................................................................................................................................................................................v
Glossary ........................................................................................................................................................................................................................vi
Pressure units and conversion factors..................................................................................................................................................................... viii
Section Title page
1INTRODUCTION
1.1 Calibration Description....................................................................................................................................................................................... 2
1.2 Preliminary Operations....................................................................................................................................................................................... 3
1.3 PIN Protection ......................................................................................................................................................................................................... 3
2INSTALLATION
2.1 Calibration Checks of Static Channels Ps1 and Ps2.............................................................................................................................. 4
2.2 Calibration Checks of the Pitot Channel..................................................................................................................................................... 5
2.3 Sensor Calibration of the Pitot and Static Channels............................................................................................................................. 6
2.4 Completion of Sensor Calibration.................................................................................................................................................................. 8
LIST OF TABLES
Table Title page
1-1 Calibration Requirements.................................................................................................................................................................................. 1
1-2 Equipment Requirements.................................................................................................................................................................................. 2
2-1 Static Channel Calibration Pressures........................................................................................................................................................... 4
2-2 Pitot Channel Calibration Pressures............................................................................................................................................................. 5
2-3 Pitot and Static Channel Calibration Points.............................................................................................................................................. 7

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ATEX CERTIFIED ADVANCED HAND TERMINAL
CONDITIONS OF USE
The ATEX certified Advanced Hand Terminal can be used in zone 2*hazardous areas in
accordance with the ATEX certification document and schedule.
Marking detail:
Refer to Advanced Hand Terminal User Manual K0418 and the label on the Advanced Hand
Terminal.
SPECIAL CONDITION OF USE
• The power supplies must be isolated when connecting the advanced hand terminal in the
hazardous area.
• The advanced hand terminal must not be disconnected when energized in the hazardous
area.
• The advanced hand terminal is a non-serviceable component. If the advanced hand terminal
becomes unserviceable it can only be replaced by another ATEX compliant hand terminal.
Note:
The advanced hand terminal must only be used with the cable assembly supplied and marked “DO NOT
SEPARATE WHILST ENERGISED IN HAZARDOUS AREA”
*Zone 2 hazardous area definition, see User Manual K0417 or User Manual K0451.

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Abbreviations
The following abbreviations are used in this manual; the abbreviations are the same in the
singular and plural.
AAmpere
abs Absolute
ADTS Air Data Test System
AHT Advanced hand terminal
ALT Altitude
Alt1 Altitude static channel 1
Alt2 Altitude static channel 2
e.g. For example
etc. And so on
°C Degrees Celsius
°F Degrees Fahrenheit
i.e. That is
max Maximum
mbar Millibar
min Minute or minimum
mm Millimetre
No. Number
PIN Personal identification number
Ps Static pressure
Ps1 Static channel 1
Ps2 Static channel 2
Pt Total pressure (Pitot)
Qc Differential pressure Ps1-Pt
QFE Local atmospheric pressure
QNH Barometric pressure at sea level
RTC Real time clock
+ve Positive
-ve Negative

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Glossary
Terminology
The terminology used in this manual is specific and individual interpretation must not be introduced.
The terms are defined as follows:
Adjust To bring to a more satisfactory state; to manipulate controls, levers, linkages, etc. to return
equipment from an out-of-tolerance condition to an in-tolerance condition.
Align To bring into line; to line up; to bring into precise adjustment, correct relative position or
coincidence.
Assemble: To fit and secure together the several parts of; to make or form by combining parts.
Calibrate: To determine accuracy, deviation or variation by special measurement or by comparison with
a standard.
Check: Make a comparison of a measure of time, pressure, temperature, resistance, dimension or
other quality with a known figure for that measurement.
Disconnect: To detach the connection between; to separate keyed or matched equipment parts.
Dismantle: To take apart to the level of the next smaller unit or down to all removable parts.
Examine: To perform a critical visual observation or check for specific conditions; to test the condition of.
Fit: Correctly attach one item to another.
Inspect: Review the work carried out by Specialists to ensure it has been performed satisfactorily.
Install: To perform operations necessary to properly fit an equipment unit into the next larger
assembly or system.
Maintain: To hold or keep in any particular state or condition especially in a state of efficiency or validity.
Operate: Make sure that an item or system functions correctly as far as possible without the use of test
equipment or reference to measurement.
Readjust: To adjust again; to move back to a specified condition; to bring back to an in-tolerance
condition.
Reconnect: To rejoin or refasten that which has been separated.
Refit: Fit an item which has previously been removed.

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Glossary (contd)
Remove: To perform operations necessary to take an equipment unit out of the next larger assembly or
system. To take off or eliminate. To take or move away.
Repair: To restore damaged, worn out or malfunctioning equipment to a serviceable, usable or
operable condition.
Replace: Remove an item and fit a new or a serviced item.
Reset: To put back into a desired position, adjustment or condition.
Service: To perform such operations as cleaning, lubricating and replenishing to prepare for use.
Test: Ascertain by using the appropriate test equipment that a component or system functions
correctly.

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Pressure Units and Conversion Factors
TABLE OF PRESSURE UNITS AND CONVERSION FACTORS
Unit Conversion
To convert FROM pressure VALUE 1 in pressure UNITS 1
TO pressure VALUE 2 in pressure UNITS 2, calculate as follows:
VALUE 2 = VALUE 1 x FACTOR 1
FACTOR 2
Note:
T he conversion factor for pressure units referenced [1] are calculated for a water temperature of 4°C. Pressure
units referenced [2] are calculated for a water temperature of 68°F these units are normally used in the USA.
Pressure unit Factor (Pascals) Pressure unit Factor (Pascals)
bar 100000 lbf/ft247.8803
lbf/in2(psi) 6894.76 inHg 3386.39
mH2O 9806.65 inH2O [1] 249.089
mbar 100 ftH2O [1] 2989.07
kgf/cm298066.5 atm 101325.0
kgf/m29.80665 pdl/ft21.48816
mmHg 133.322 dyn/cm20.1
cmHg 1333.22 hbar 10000000
mHg 133322.0 tonf/ft2(UK) 107252.0
mm/H2O [1] 9.80665 tonf/in2(UK) 15444300
cm/H2O [1] 98.0665 inH2O (USA) [2] 248.64135
N/m21ftH
2O (USA) [2] 2983.6983
hPa 100 kp/mm29806650
kPa 1000 kp/cm298066.5
MPa 1000000 kp/m29.80665
torr 133.322

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1INTRODUCTION
yThe ADTS 2XX incorporates a calibration facility that operates through an enable switch,
located on the front panel under a calibration protection label. For the system to stay
accurate, a calibration check should be carried out at chosen intervals. If the accuracy
of the system is not within the specification, carry out a calibration adjustment.
Calibration process
yThe maintain calibration menu contains the PIN protected calibration adjustment
functions:
ySensor calibration
yValve calibration (not accessible)
yThis manual describes the sensor calibration. An additional PIN protects the valve
calibration, as this procedure must only be carried out at the repair depot.
TABLE 1-1 CALIBRATION REQUIREMENTS
Test instrument characteristics
(1)
Performance specifications
(2)
Test method
(3)
Pneumatic pressure Range:
35 mbar to
3000 mbar absolute
Accuracy:
± 0.01% of reading
Compared against
pressure standard.

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TABLE 1-2 EQUIPMENT REQUIREMENTS
1.1 Calibration Description
yCalibration Check
This procedure checks the calibration accuracy without adjusting it. It may be used either to see if
the system requires a calibration or to verify performance following a calibration adjustment.
yCalibration Adjustment
The procedure applies known pressures to the air data test system and then entering the exact
applied pressure using the hand-terminal or front panel touch screen. After all calibration points have
been entered, the air data test system automatically calculates the necessary offset (zero) and slope
(span) corrections.
The date of this procedure is logged and stored during this procedure.
Equipment Minimum use
specifications
Calibration
equipment Sub-item
Pressure
standard
Range:
35 mbar to
3000 mbar absolute
Accuracy:
± 0.01% of reading
Uncertainty better than
50 ppm.
Traceable to national
standards.
RUSKA 2468 primary
pitot static tester
-

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1.2 Preliminary Operations
• Review and become familiar with the whole procedure before beginning calibration
process.
• Allow at least one hour for the air data test system to thermally stabilize after
switching on and before performing any calibration routines.
• Before starting a calibration procedure carry out a leak test, see section 2.
• To enable calibration adjustment, remove the calibration label and set the switch to
calibrate (switch latched above the front panel level).
• All three output ports of the air data test system can be connected together and a
common pressure applied by the pressure standard. The expansion ports in the lid
provides a useful method of connection.
• Use the units of pressure measurement of millibar in the following procedures.
• Calibration adjustments and calibration check must be carried out with the pressure
standard at the same level as the air data test system.
1.3 PIN Protection
The ADTS 2XX contains two protected menus, theoperating limits and the maintain calibration
menu.
The factory set PIN codes are sent to the supervisor in a separate envelope.
IMPORTANT NOTE
Change these codes for authorised access. Unauthorised access to these two menus
can make this system inaccurate and could, in control mode, cause excessive rates of
pressure change.

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2CALIBRATION
2.1 Calibration Check of Static Channels Ps1 and Ps2
yBefore starting this procedure carry out a leak test.
ySet the unit to Leak/Measure mode, set operating limits to MAX and disable Auto Leak,
refer to the User manual for further details.
yConnect the pressure standard to static channels Ps1 and Ps2.
(1) Make sure that the calibration switch is set to disable.
(2) Adjust calibration pressure to the first pressure value in Table 2-1.
(3) Compare the pressure value on the calibration standard to the value displayed and
record the difference.
(4) Repeat (2) and (3) for pressure No. 2 to 9 in Table 2-1.
(5) If the recorded difference exceeds the allowable tolerance (*) carry out a calibration
adjustment.
(6) Adjust calibration standard to atmospheric pressure. Disconnect calibration standard
from the channels Ps1 and Ps2.
(7) If there is no further calibration or testing required, switch off the unit.
TABLE 2-1 STATIC CHANNEL CALIBRATION PRESSURES
* The tolerance quoted in this table may need to be adjusted to allow for measurement uncertainties of the calibration
standard in use. The limits stated relate to the published, minimum specification for the equipment entering service.
Acceptance limits may vary at the user's discretion for specific applications.
Pressure
No.
Pressure
mbar
Tolerance*
mbar
1 34.98 ±0.10
2 71.72 ±0.10
3 178.74 ±0.10
4 314.85 ±0.10
5 465.63 ±0.10
6 696.82 ±0.10
7 843.07 ±0.10
8 1013.25 ±0.10
9 1355 ±0.10

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2.2 Calibration Check of the Pitot Channel
• Before starting this procedure carry out a leak test.
• Set the unit to Leak/Measure mode, set operating limits to MAX and disable Auto Leak,
refer to the User manual for further details.
• Connect the pressure standard to pitot channel Pt.
(1) Connect calibration standard to the pitot output.
(2) Set the calibration pressure to the first pressure value in Table 2-2.
(3) Compare the pressure value on the calibration standard to the value displayed and
record the difference.
(4) Repeat (2) and (3) for pressure No. 2 to 7 in Table 2-2.
(5) If the recorded difference exceeds the allowable tolerance (*) repeat steps (2) to (4). If,
on the second calibration check, the recorded difference exceeds the allowable
tolerance (*) carry out a calibration adjustment.
(6) The display goes back to the channelselect menu, selectanother channel for calibration
checking or exit the calibration menu.
(7) Set the calibration standard to atmospheric pressure. Disconnect calibration standard
from the pitot output.
(8) If there is no further calibration or testing required, switch off the unit.
TABLE 2-2 PITOT CHANNEL CALIBRATION PRESSURES
* The tolerance quoted in this table may need to be adjusted to allow for measurement uncertainties of the calibration
standard in use. The limits stated relate to the published, minimum specification for the equipment entering service.
Acceptance limits may vary at the user's discretion for specific applications.
Pressure
No.
Pressure
mbar
Tolerance*
mbar
135 ±0.35
2 500 ±0.35
31000 ±0.35
41500 ±0.35
52000 ±0.35
62500 ±0.35
73000 ±0.35

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2.3 Sensor Calibration of the Pitot and Static Channels
yBefore starting this procedure carry out a calibration check of all channels.
ySet the unit to Leak/Measure mode, set operating limits to MAX and disable Auto Leak,
refer to the User manual for further details.
ySet the calibration switch to enable (switch latched above the front panel level).
Note: Pressure values other than those stated in Table 2-3 can be used within the ranges of Ps1, Ps2 and Pt. A
minimum of two calibration points must be used.
Procedure
(1) To perform a calibration, select SETUP and Calibrate Sensors:
(2) Adjust the pressurestandard and apply pressure No. 1in Table 2-3, allow the displayed reading
to stabilize.
(3) Press, Enter Pt reference and, using the numeric keys, set the value of pressure No. 1. The
screen shows the number of points entered Pt = 1.

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(4) Adjust the pressurestandard and apply pressure No. 2in Table 2-3, allow the displayed reading
to stabilize. The display shows the number of points entered Pt = 2 and the current zero offset
and span values and the new calculated zero offsetand span values. The screen also changes
with the Accept Pt Cal highlighted.
Note: This is the minimum number of calibration points and in only one channel. Pressing Accept Pt
Cal stores the new calculated zero offset and span values for Pt channel, the other channels - Ps1 and
Ps2 keep the original (current) values.
(5) Continue applying calibration points to each channel as described above. The screen changes
with the Accept Ps1 Cal and Accept Ps2 Cal highlighted.
Note: Pressing Accept for any channel overwrites the existing calibration data.
When the new values are acceptable press Accept Cal.
(6) When complete, press Back to return to SETUP ADTS SYSTEM PARAMETERS.
TABLE 2-3 PITOT AND STATIC CHANNEL CALIBRATION POINTS
Pressure
Ps1 and Ps2
calibration points
mbar
Pt
calibration points
mbar
135 35
2 600 600
31355 1355
4 - 3000

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2.4 Completion of Sensor Calibration
yAfter completion of all calibration adjustment procedures, carry out the following:
(1) Set the calibration switch to disable (latched below the front panel level).
(2) Makesure the calibrationstandardand theunitare atatmosphericpressure. Disconnect
the calibration standard from the unit.
(3) Fit a new calibration label over the calibration switch.