Endress+Hauser Oxymax COS61 User manual

BA00387C/07/EN/13.12
71162645
Operating Instructions
Oxymax COS61
Dissolved oxygen sensor

Endress+Hauser
Documentation information
Warnings
The structure, signal words and safety colors of the signs comply with the specifications of
ANSI Z535.6 ("Product safety information in product manuals, instructions and other collateral
materials").
Symbols used
Safety message structure Meaning
DANGER
!
Cause (/consequences)
Consequences if safety message
is not heeded
►Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the situation will result in a fatal or serious
injury.
WARNING
!
Cause (/consequences)
Consequences if safety message
is not heeded
►Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the situation can result in a fatal or serious
injury.
CAUTION
!
Cause (/consequences)
Consequences if safety message
is not heeded
►Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or medium
injury.
NOTICE
Cause/situation
Consequences if safety message
is not heeded
►Action/note
This symbol alerts you to situations that can result in damage to
property and equipment.
È ä 1 This symbol indicates a cross reference to a defined page (e.g. p. 1).
È å 2 This symbol indicates a cross reference to a defined figure (e.g. fig. 2).
Additional information, tips
Permitted or recommended
Forbidden or not recommended

Oxymax COS61
Endress+Hauser 3
Table of contents
1 Basic safety instructions . . . . . . . . . . . . 4
1.1 Requirements for personnel . . . . . . . . . . . . . . . . . . . 4
1.2 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Occupational safety . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 Product safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Identification . . . . . . . . . . . . . . . . . . . . 6
2.1 Product page and configurator . . . . . . . . . . . . . . . . . 6
2.2 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Installation . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Incoming acceptance, transport, storage . . . . . . . . . . 7
3.2 Installation conditions . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Installation instructions . . . . . . . . . . . . . . . . . . . . . . 8
3.4 Installation examples . . . . . . . . . . . . . . . . . . . . . . . 10
3.5 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 14
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Direct connection to the transmitter . . . . . . . . . . . 15
4.2 Connection via junction box . . . . . . . . . . . . . . . . . 16
4.3 Post-connection check . . . . . . . . . . . . . . . . . . . . . . 16
5 Device description . . . . . . . . . . . . . . . 17
5.1 Sensor design . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . 18
5.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Commissioning. . . . . . . . . . . . . . . . . . 21
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.3 Automatic cleaning . . . . . . . . . . . . . . . . . . . . . . . . 21
7 Maintenance. . . . . . . . . . . . . . . . . . . . 22
7.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.2 Replacing wear and tear materials . . . . . . . . . . . . . 23
8 Accessories. . . . . . . . . . . . . . . . . . . . . 24
8.1 Connection accessories . . . . . . . . . . . . . . . . . . . . . 24
8.2 Installation accessories . . . . . . . . . . . . . . . . . . . . . . 24
8.3 Cleaning and calibration . . . . . . . . . . . . . . . . . . . . 25
9 Trouble-shooting . . . . . . . . . . . . . . . . 26
9.1 Trouble-shooting instructions . . . . . . . . . . . . . . . . 26
9.2 Sensor checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9.3 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.5 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10 Technical data . . . . . . . . . . . . . . . . . . . 28
10.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
10.2 Performance characteristics . . . . . . . . . . . . . . . . . . 28
10.3 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
10.4 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
10.5 Mechanical construction . . . . . . . . . . . . . . . . . . . . 29
Index . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Basic safety instructions Oxymax COS61
4Endress+Hauser
1 Basic safety instructions
1.1 Requirements for personnel
►Installation, commissioning, operation and maintenance of the measuring system must only be
carried out by trained technical personnel.
►The technical personnel must be authorized by the plant operator to carry out the specified
activities.
►The electrical connection may only be performed by an electrical technician.
►The technical personnel must have read and understood these Operating Instructions and must
follow the instructions they contain.
►Measuring point faults may only be rectified by authorized and specially trained personnel.
Repairs not described in the enclosed Operating Instructions may only be carried out directly
at the manufacturer's or by the service organization.
1.2 Designated use
The oxygen sensor is suitable for continuous measurement of dissolved oxygen in water.
Typical applications are:
• Measuring, monitoring and regulating the oxygen content in activated sludge basins.
• Monitoring the oxygen content in the sewage treatment plant outlet.
• Monitoring, measuring and regulating the oxygen content in public waters and fish farming
water.
• Monitoring of oxygen enrichment in drinking water.
Any other use than the one described here compromises the safety of persons and the entire
measuring system and is not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.
1.3 Occupational safety
As the user, you are responsible for complying with the following safety conditions:
• Installation instructions
• Local standards and regulations
Electromagnetic compatibility
With regard to electromagnetic compatibility, this device has been tested in accordance with the
applicable European standards for industrial applications.
The electromagnetic compatibility indicated only applies to a device that has been connected in
accordance with the instructions in these Operating Instructions.
1.4 Operational safety
►Before commissioning the entire measuring point, make sure all the connections are correct.
Ensure that electrical cables and hose connections are not damaged.
►Do not operate damaged products, and safeguard them to ensure that they are not operated
inadvertently. Mark the damaged product as defective.
►If faults cannot be rectified, the products must be taken out of service and secured against
unintentional commissioning.
CAUTION
!
The cleaning system is not switched off during calibration or maintenance activities
Risk of injury due to medium or cleaning agent
►If a cleaning system is connected, switch it off before removing a sensor from the medium.
►If you are not switching off the cleaning system because you wish to test the cleaning function,
wear protective clothing, goggles and gloves or take other appropriate measures.

Oxymax COS61 Basic safety instructions
Endress+Hauser 5
1.5 Product safety
The product is designed to meet state-of-the-art safety requirements, has been tested and left the
factory in a condition in which it is safe to operate. Relevant regulations and European standards
have been observed.

Identification Oxymax COS61
6Endress+Hauser
2 Identification
2.1 Product page and configurator
You can create a complete and valid order code by using the configurator on the internet product
page.
Product page link:
www.products.endress.com/cos61
2.2 Order code
1. You can choose from the following options on the product page located on the right:
2. Click "Configure this product".
3. The configurator opens in a separate window.
Use the radio buttons to configure the order code from the nameplate of your device.
4. Afterwards, you can export the order code as a PDF or Excel file.
To do so, click the appropriate button at the top of the page.
2.3 Scope of delivery
The following items are included in the delivery:
• Oxygen sensor with transport protection cap for membrane protection
• Operating Instructions (on CD only)
• Brief Operating Instructions (paper version)
If you have any questions, please contact your supplier or your local sales center.

Oxymax COS61 Installation
Endress+Hauser 7
3 Installation
3.1 Incoming acceptance, transport, storage
►Make sure the packaging is undamaged!
►Inform the supplier about any damage to the packaging.
Keep the damaged packaging until the matter has been settled.
►Make sure the contents are undamaged!
►Inform the supplier about damage to the contents. Keep the damaged products until the matter
has been settled.
►Check that the order is complete and agrees with your shipping documents.
►The packaging material used to store or to transport the product must provide shock protection
and humidity protection. The original packaging offers the best protection. Also, keep to the
approved ambient conditions (see "Technical data").
►If you have any questions, please contact your supplier or your local sales center.
3.2 Installation conditions
3.2.1 Dimensions
a0004083-en
Fig. 1: Fixed cable version
a0004084-en
Fig. 2: TOP68 version

Installation Oxymax COS61
8Endress+Hauser
3.2.2 Angle of installation
The sensor can be installed up to the horizontal in an assembly, support or a suitable process
connection.
Other angles and overhead installation are not recommended. Reason: possible sediment formation
and resulting falsification of measured value.
The optimum installation angle is 45˚(e.g. with assembly CYA112).
a0004087
Fig. 3: Angle of installation
A Permissible installation positions: 0 ... 180 ˚, optimum angle 45 ˚
►Make sure you comply with the instructions for installing sensors. You will find them in the
Operating Instructions for the assembly used.
3.2.3 Mounting location
• Select the installation location so that there is easy access for later calibration.
• Make sure that upright posts and assemblies are secured safely and vibration-free.
• Select an installation location which produces a typical oxygen concentration.
3.3 Installation instructions
3.3.1 Measuring system
A complete measuring system comprises:
• Oxygen sensor Oxymax COS61
• Transmitter, e.g. Liquisys COM2x3-W
• Special measuring cable
• Assembly, e.g. COA250 flow assembly, CYA112 immersion assembly or COA451 retractable
assembly
Optional:
• CYH112 assembly holder for immersion operation
• VS junction box (for cable extension)
• Cleaning system

Oxymax COS61 Installation
Endress+Hauser 9
3.3.2 Installing a measuring point
For immersed operation, install the individual modules away from the basin on a solid base.
Only carry out the final installation at the intended installation location.
For a complete installation of a measuring point, proceed as follows:
1. Install a retractable or a flow assembly (if used) into the process.
2. Connect the water supply to the rinse connections (if you use an assembly with cleaning
function).
3. Install and connect the oxygen sensor.
4. Install an immersion or an suspension assembly (if used) into the process.
NOTICE
No assembly used, sensor not correctly installed, grounding regulations not observed
Risk of damaging the sensor cable, no protection to electromagnetic interferencies
►Screw the sensor into the assembly so that the cable is not twisted.
►Avoid exerting excessive tensile force on the cable (e.g. from jerky pulling).
►When using metallic assemblies and installation equipment, comply with national grounding
regulations.
►Observe the sensor installation instructions of the Operating Instructions of the assembly used.
a0012885
Fig. 4: Measuring system (example)
1
2
3
Liquisys COM253 transmitter
COS61 oxygen sensor
Pipework (ascending pipe)
4
5
6
Medium flow direction
Retractable assembly Cleanfit COA451
Sensor cable

Installation Oxymax COS61
10 Endress+Hauser
3.4 Installation examples
3.4.1 Immersion operation
Upright post and chain assembly
For large basins, where sufficient installation distance is required from the basin edge (aeration
basin, especially), it is advisable to use the upright post and chain assembly. The free swinging of
the immersed assembly practically rules out vibrations from the upright post.
A good self-cleaning of the fluorescence cap is reached due to the swinging of the assembly.
According to this effect, the sensor life time can be extended.
a0013510
Fig. 5: Chain holder, rail mounted
1Chain
2 Flexdip CYH112 holder
3Rail
4Oxymaxsensor
5 Flexdip CYA112 wastewater assembly
a0013511
Fig. 6: Chain holder, mounted to a post
1 Weather protection cover
2
# ontroller / transmitter
3C
h
a
in
4 Flexdip CYA112 wastewater assembly
5 Oxymax sensor
6 Flexdip CYH112 holder

Oxymax COS61 Installation
Endress+Hauser 11
Upright post and fixed immersion assembly
The preferable type of installation for strong or turbulent flow (> 0.5 m/s) in the basin or open
channels is to secure the device to an upright post and a securely mounted immersion tube. If the
flow is very strong, a second transverse pipe can be installed with its own pipe support.
a0013513
Fig. 7: Assembly holder with immersion tube
1 Weather protection cover CYY101
2 Controller / transmitter
3 Immersion assembly Flexdip CYA112
4Oxymaxsensor
5 Assembly holder Flexdip CYH112

Installation Oxymax COS61
12 Endress+Hauser
Basin rim mounting with immersion assembly
For fixing to the sides of the basin or channel, we recommend the pendulum holder of the
immersion tube. Optionally, you can also use the assembly with a float.
Floating body
To aid installation in strongly fluctuating water levels, e.g. in rivers or lakes, there is a floating body
COA 110-50 available (→å9).
a0013693
Fig. 8: Basin rim mounting
1 Pendulum holder CYH112
2 Assembly Flexdip CYA112
3 Float of assembly CYA112
4Oxymaxsensor
a0004108-en
Fig. 9: Floating body
1
2
3
4
5
6
7
Cable route with strain relief and rain protection
Mounting ring for ropes and chains with locking
screw
Lugs Ø15, 3 x 120 ˚for anchoring
Saltwater-resistant plastic float
Pipe 40x1, stainless steel 1.4571 (AISI 316Ti)
Shock absorber and weight
Oxygen sensor
12
3
4
1
2
3
4
5
6
7
G1
800/31.50
500/19.69 220/8.66
Ø200/7.87
mm/inch

Oxymax COS61 Installation
Endress+Hauser 13
3.4.2 Flow assembly
The COA250 flow assembly with automatic self-venting is suitable for use in pipelines or hose
connections. The inlet is at the bottom of the assembly, the outlet at the top (connection thread
G¾). It can be installed in a pipe by using two 90˚pipe brackets to allow inflow to the assembly
(→å11, Pos. 6).
3.4.3 Retractable assembly
The assembly is designed for installation on tanks and pipes. Suitable nozzles must be available for
this.
Install the assembly at places with constant flow. The minimum pipe diameter is DN 80 (3").
a0004117-en
Fig. 12: Permissible and impermissible sensor installation positions
1 Ascending pipe, best position
2 Horizontal pipe, sensor top down, impermissible due to air cushion or foam bubble forming
3 Horizontal pipe, installation with permissible emitting angles (acc. to sensor version)
4 Overhead installation, impermissible due to missing electrolyte contact of the sensor electrodes
5 Down pipe, impermissible
a0004113-en
Fig. 10: Flow assembly COA250
1 Screw-in part for sensor
2Screwring
3 Meter body
4 Connection thread G¾
5 Dummy plug (connection for spray head CUR3)
a0004114
Fig. 11: Bypass installation with manually
actuated valves or solenoid valves
1 Main line
2 Medium return
3 Oxygen sensor
4, 7 Manually actuated or solenoid valves
5 Flow assembly COA250
690˚pipe bracket
8Mediumremoval
1
23
4
6
7
8
5

Installation Oxymax COS61
14 Endress+Hauser
NOTICE
Sensor not immersed into the medium, suspended particles settled on the sensor
membrane or sensor optics, sensor installed overhead
Measuring errors can occur
►Do not install the assembly at places, where air cushions or foam bubbles can be formed or
where suspended particles can settle on the sensor membrane or optics (→å12).
3.5 Post-installation check
►Sensor and cable undamaged?
►Cap undamaged?
►Compliance with permissible sensor installation position?
►Is the sensor installed in an assembly and is not suspended from the cable?
►Avoid moisture by rain by putting the protective cap on the assembly?

Oxymax COS61 Wiring
Endress+Hauser 15
4 Wiring
WARNING
!
Device is energized
Improper connection can cause injury or death.
►The electrical connection must only be carried out by a certified electrician.
►Technical personnel must have read and understood the instructions in this manual and must
adhere to them.
►Prior to beginning any wiring work, make sure voltage is not applied to any of the cables.
4.1 Direct connection to the transmitter
4.1.1 Field installation
Connect the sensor directly to the transmitter by using the special measuring cable with SXP plug.
4.1.2 Panel mounting
• Remove the SXP connector (transmitter side!) from the cable.
• Refer to the following table for the cable assignment and the assigned terminals for
Liquisys COM223-WX/WS.
• Please note that the cable assignment varies depending on the sensor version (fixed cable or
TOP68 connection).
a0004118
Fig. 13: SXP plug
Terminal
COM223
Sensor with fixed cable (OMK) Sensor with TOP68 connection
(CYK71)
Core Assignment Core Assignment
87 YE +UBYE +UB
0GY0V WH0V
96 PK Com. (digital) GN Communication (digital)
97 BU Com. (digital) BN Communication (digital)
88 BN –UBKoax innen –UB

Wiring Oxymax COS61
16 Endress+Hauser
4.2 Connection via junction box
To lengthen the sensor connection beyond the length of the fixed cable, you require a junction box
VS.
Always connect the sensor cable with the SXP plug to the junction box.
The cable extension to the transmitter then depends from the transmitter version, i.e. field device
or panel mounted device.
4.3 Post-connection check
a0004129-en
Fig. 14: Junction box VS to a field device
1 SXP plug to field device
2 SXP plug from sensor
a0004130
Fig. 15: Junction box VS to a panel mounted device
2 SXP plug from sensor
3 Measuring cable (OMK) to the transmitter
4 Connection department of the transmitter
Instrument status and specifications Remarks
Are the sensor, assembly, junction box or cable damaged? Visual inspection
Electrical connection Remarks
Does the supply voltage of the transmitter match the specifications on the
nameplate?
Are the installed cables strain-relieved and not twisted ?
Is the cable type route completely isolated ? Power cable/weak current cable
Are the power supply and signal cable correctly connected to the
transmitter ?
Use the connection diagram of the
transmitter.
Long enough length of cable core stripped and correct in terminal? Check seating (pull slightly)
Are all the screws terminals properly tightened ? Tighten
Are all the cable entries installed, tightened and sealed ? For cable entries lateral: cable loops
downwards for water to be able to drip off.
Are all the cable entries installed downwards or lateral ?
1
2
82 / 3.23
80 / 3.15
mm / inch
3
2
YE
GY
PK
BU
BN
GN
WH
87
0
96
97
88
19
18
4

Oxymax COS61 Device description
Endress+Hauser 17
5 Device description
5.1 Sensor design
The sensor consists of the following function units:
•Sensorshaft
• Sensor head with optics (emitter and detector)
• Fluorescence cap
•Protectionbasket
• Alternatively to the protection basket, you can use a spray head COR 3 (optional, see
"Accessories") for use in immersed operation with cleaning function.
a0004151
Fig. 16: Sensor design
1 Sensor cable
2Sensorshaft
3O-ring
4Protectionguard
5 Threaded connection
6 Detector
7 Emitter diode
8 Fluorescence cap
1
2
3
4
5
6
7
8

Device description Oxymax COS61
18 Endress+Hauser
5.2 Measuring principle
5.2.1 Oxygen measurement based on the principle of fluorescence
quenching
• Sensor design:
– Oxygen-sensitive molecules (markers) are integrated in an optically active layer (fluorescence
layer).
– The surface of the fluorescence layer is in contact with the medium.
– The sensor optics are directed at the underside of the fluorescence layer.
• There is an equilibrium between the oxygen partial pressure in the medium and that in the
fluorescence layer:
– If the sensor is immersed in the medium, the equilibrium is established very quickly.
• Measuring process:
– The sensor optics send green light pulses to the fluorescence layer.
– The markers "answer" (fluoresce) with red light pulses.
– The duration and intensity of the response signals is directly dependent on the oxygen contents
and the partial pressure.
– If the medium is free from oxygen, the response signals are long and very intense.
– Oxygen molecules quench the marker molecules. As a result, the response signals are shorter
and less intense.
• Measurement result:
– The sensor returns a signal that is in proportion to the oxygen concentration in the medium.
– The medium temperature and air pressure are already taken into account calculated in the
sensor.
– In addition to the standard values of concentration, saturation index and partial pressure, the
sensor also returns a raw measured value in μs. The value corresponds to the decay time of the
fluorescence and is approx. 20 μs in air, and approx. 60 μs in media free from oxygen.
5.2.2 Fluorescence cap
The oxygen dissolved in the medium is diffused into the fluorescence cap.
Suitable flow is not necessarily mandatory but it does improve the speed at which the measuring
system responds and ensures a more representative measured value compared to a measurement in
static medium.
The cap is only permeable for dissolved gases. Other substances dissolved in the liquid phase e.g.
ionic substances, will not penetrate through the membrane. Therefore, medium conductivity has
no impact on the measuring signal.
5.3 Calibration
Calibration is a means of adapting the transmitter to the characteristic values of the sensor.
Normally, sensor calibration is seldom necessary. It is necessary after:
• Changing the fluorescence cap
Within the framework of system monitoring and supervision, for example, the calibration can also
be cyclically monitored (at typical time intervals, depending on operating experience) or renewed.
Ideally, use the calibration vessel (see Accessories) for calibration. For this purpose, unscrew the
basket protector from the sensor and guide the sensor into the calibration vessel as far as it will
go (resting on the vessel rim).

Oxymax COS61 Device description
Endress+Hauser 19
5.3.1 Types of calibration
Types of calibration:
• Air (preferably saturated water vapor, e.g. near the water surface)
– Measured values between 70 and 130 %SAT result in the calibration of the measured value at
air
– Measured values smaller than 15 %SAT result in the calibration of the zero point
• Air-saturated water
– Like air calibration
• Reference measured value (entry at transmitter, sensor remains in the medium).
– Measured values between 50 and 150 %SAT result in the calibration of the measured value to
the reference value while maintaining the zero point
– Measured values smaller than 10 %SAT result in the calibration of the measured value to the
reference value while maintaining the measured value at air
If necessary, calibrate COS61 practically:
•Intheair (water-vapor saturated) type of calibration in order to calibrate the measured value at
air.
•Intheair-saturated water type of calibration, but while using oxygen-free water, (see "Sensor
check" section), to calibrate the zero point.
5.3.2 Calibration intervals
You can determine the intervals with the following method:
1. Check the sensor one month after its being put into operation:
– Remove the sensor from the medium.
– Clean the outside of the sensor with a damp cloth.
– Measure the oxygen saturation index at air after 20 minutes.
2. Decide using the results:
a. If the measured value is not at 100 ±2 %SAT, you have to calibrate the sensor.
b. Otherwise, lengthen the time to the next inspection.
3. Proceed as per Point 1 after two, four and/or eight months. In this way, you can determine
the optimum calibration interval for your sensor.
5.3.3 Calculation example for the calibration value
As a check, you can calculate the expected calibration value (transmitter display) as shown in the
following example (salinity is 0).
1. Determine:
– The ambient temperature for the sensor (air temperature for "air" calibration method,water
temperature for "air-saturated water" calibration type)
– the altitude above sea level
– the current air pressure L(=rel. air pressure to sea level) at the time of calibration. (If
undeterminable, use 1013 hPa (407 inH2O) for an approximate calculation.)
2. Define:
–thesaturationvalueSacc. to the first table
– the factor Kacc. to the second table

Device description Oxymax COS61
20 Endress+Hauser
3. Calculate the factor L:
4. Calculate the calibration value C:
C = S .K .L
Example
• Air calibration at 18˚C (64 ˚F), altitude 500 m (1650 ft) above sea level, air pressure 1009 hPa
(405 inH2O)
• S = 9.45 mg/l, K = 0.943, L = 0.996
Calibration value C = 8.88 mg/l.
You do not need factor K from the table if your device returns the absolute air pressure Labs
(location-dependent air pressure) as the measured value.
Thus, the formula for calculation is: C = S .Labs.
˚C / ˚FS [mg/
l=ppm]
˚C / ˚FS [mg/
l=ppm]
˚C / ˚FS [mg/
l=ppm]
˚C / ˚FS [mg/
l=ppm]
0 / 32 14.64 11 / 52 10.99 21 / 70 8.90 31 / 88 7.42
1 / 34 14.23 12 / 54 10.75 22 / 72 8.73 32 / 90 7.30
2 / 36 13.83 13 / 55 10.51 23 / 73 8.57 33 / 91 7.18
3 / 37 13.45 14 / 57 10.28 24 / 75 8.41 34 / 93 7.06
4 / 39 13.09 15 / 59 10.06 25 / 77 8.25 35 / 95 6.94
5 / 41 12.75 16 / 61 9.85 26 / 79 8.11 36 / 97 6.83
6 / 43 12.42 17 / 63 9.64 27 / 81 7.96 37 / 99 6.72
7 / 45 12.11 18 / 64 9.45 28 / 82 7.82 38 / 100 6.61
8 / 46 11.81 19 / 66 9.26 29 / 84 7.69 39 / 102 6.51
9 / 48 11.53 20 / 68 9.08 30 / 86 7.55 40 / 104 6.41
10 / 50 11.25
Altitude
[m / ft]
KAltitude
[m / ft]
KAltitude
[m / ft]
KAltitude
[m / ft]
K
0 1.000 550 / 1800 0.938 1050 / 3450 0.885 1550 / 5090 0.834
50 / 160 0.994 600 / 1980 0.932 1100 / 3610 0.879 1600 / 5250 0.830
100 / 330 0.988 650 / 2130 0.927 1150 / 3770 0.874 1650 / 5410 0.825
150 / 490 0.982 700 / 2300 0.922 1200 / 3940 0.869 1700 / 5580 0.820
200 / 660 0.977 750 / 2460 0.916 1250 / 4100 0.864 1750 / 5740 0.815
250 / 820 0.971 800 / 2620 0.911 1300 / 4270 0.859 1800 / 5910 0.810
300 / 980 0.966 850 / 2790 0.905 1350 / 4430 0.854 1850 / 6070 0.805
350 / 1150 0.960 900 / 2950 0.900 1400 / 4600 0.849 1900 / 6230 0.801
400 / 1320 0.954 950 / 3120 0.895 1450 / 4760 0.844 1950 / 6400 0.796
450 / 1480 0.949 1000 / 3300 0.890 1500 / 4920 0.839 2000 / 6560 0.792
500 / 1650 0.943
L=
relative air pressure during calibration
-----------------------------------------------------------------------------
1013 hPa