background image

button is pressed briefly, the next 

block

 is selected in the following order: 

upper, large, middle, lower, upper

, etc. If one (or several) special mode 

has (have) been activated, the selection will take place as follows: 

upper, 

large, middle, lower, 

special mode screen

, upper

, etc.

 

The MOD (

) button is used to modify the display of a 

block

 (it scrolls 

down the various modes of the 

block

), and will only work if the 

block

 is 

selected. 

Remark: The last mode displayed on a block becomes the default 
mode for this block
, which means that if the instrument is switched 
off than turned back on, the standard screen configuration will be 
the same as the configuration displayed before it was switched off.

 

Starting up the Instrument 

First Use (out of factory) 

When fresh out of the production line, the instrument is supplied in a 
storage state, i.e. with all the sensors disabled, including the internal 
clock. This state allows the storage of the instrument for a long period 
of time without running the battery down. 

 

Press and keep down the 

 button, then release it; this 

activates the instrument which asks you to set the date. 
Select by pressing briefly the 

 button the direction of the 

setting (

increment, 

decrement) as well as the display 

format (02Apr or Apr02). Pressing briefly of the 

 button 

will scroll the days 02Apr, 03Apr, 04Apr…..30Apr, 

01May, etc. To increase scrolling speed, keep the 

 button down, to 

switch to an even greater scrolling speed, release then keep the 

 button 

down again, etc. (4 speed levels). The year (displayed with 3 digits, here 
006 = 2006) cannot be set individually, but changes automatically when 
passing from December 31st to January 1st. Once the date is set, keep the 

 button down to confirm your settings. 

 

 

9

You are now about to set the time. With the 

 button 

select the scrolling direction (

increment, 

decrement) 

and the time format (A for AM and P for PM, or 24:00 
format). Setting the time is also achieved with the help of 
the 

 button, and in the same way as with the date setting 

(please see above). Once the time is set, keep the 

 button 

Summary of Contents for Geos N11

Page 1: ......

Page 2: ...uped under the Table of Contents Throughout the Manual you will discover special symbols which will bring to your attention important aspects general information and warnings The diagrams showing some of the screens are also aimed at helping you fully understand how the instrument operates Symbols used in this Manual 2 Remark or additional information The instrument may be damaged or not work adeq...

Page 3: ...Instantaneous State 10 Normal State on 10 Switching the Instrument off 10 11 Basic Measuring Mode Standard Screen 11 General Use of Buttons 11 Wind speed 12 Measuring modes 12 Resetting the maximum wind speed to zero 12 Selecting the unit of measurement 12 Temperature 12 Measuring modes 12 13 Selecting the unit of measurement 13 Resetting the minimum and maximum values to zero 13 Humidity 13 Measu...

Page 4: ...9 Special Measuring Modes 19 Special Menu 19 Display 19 20 Enabling a Special Mode 20 Date and Time 21 Display 21 Operation 21 Calibration 21 Barometric Tendency 21 Display 21 Operation 21 23 Chronometer 23 Display 23 Operation 24 Density Altitude 24 Display 24 Operation 24 Magnetic Field in µTesla Compass Heading 25 Display 25 Operation 25 Calibration 25 Magnetic declination 25 26 Variometer 26 D...

Page 5: ... Automatic Stop 31 32 Permanent operation 32 Data transfer to a PC 32 Other states 33 Resets 33 Memory reset deletion 33 Screens reset 33 General reset 33 34 Instrument reset 34 Power Supply Battery Replacement 34 Batteries fitted in the instrument 34 35 Batteries of the Light Emitting Diode LED Lamp 35 Condition of the instrument battery 35 36 LCD Display Test 36 Temperature Compensated Quartz 36...

Page 6: ...ou treat it with care and that you read this Manual carefully WARNING This instrument is designed as an aid to users who are in an open air environment but IT CANNOT replace advice and warnings from the local weather station This means that you should regularly check and compare the measurements provided by your instrument with the information put out by the weather station Open air climatic condi...

Page 7: ...he sensors M g plastic frame Functions Measuring Modes Wind speed instantaneous average maximum Temperature instantaneous minimum maximum windchill minimum windchill maximum windchill Humidity current relative minimum relative maximum relative Dew point Pressure absolute relative pressure QNH ground pressure QFE altitude maximum altitude density altitude QFE height flight level finesse variometer ...

Page 8: ...ic modes over the standard screen Each block with the exception of the large one accommodates several measuring modes however only one mode may be displayed at the same time per block The basic measuring modes are displayed on the standard screen as follows upper block average and maximum wind speed large block instantaneous wind speed middle block all the temperature and humidity measuring modes ...

Page 9: ...rage of the instrument for a long period of time without running the battery down Press and keep down the button then release it this activates the instrument which asks you to set the date Select by pressing briefly the button the direction of the setting increment decrement as well as the display format 02Apr or Apr02 Pressing briefly of the button will scroll the days 02Apr 03Apr 04Apr 30Apr 01...

Page 10: ...ing briefly on the button the day of the week can be displayed instead of and the year instead of the time With the third push of the button or after 5 seconds the instrument turns off Normal State on When the instrument is in the OFF or instantaneous state keep pressing the button down for 2 seconds The instrument displays the default screen Switching the Instrument off In order to manually turn ...

Page 11: ... rule pressing the button for 2 seconds will bring the standard screen back up allow to terminate a calibration or exit the special menu By pressing it for a long time 3 seconds in a flashing state it is possible to access the settings of a number of values If the standard screen is normal not flashing pressing the button for a long time will turn off the instrument LUMminosity Button a brief push...

Page 12: ...eed to zero Select the upper block and display the measuring mode for the maximum wind speed it flashes then press the button for 2 seconds Selecting the unit of measurement The instrument features 6 units of measurement in relation to wind speed km h kilometres per hour mph miles per hour knots m s metres per second fps feet per second and Beaufort Beaufort scale To change the unit of measurement...

Page 13: ...nfirm your choice Resetting the minimum and maximum values to zero Select the middle block and display the measuring mode that you wish to reset it flashes then press the button for 2 seconds Humidity Measuring modes Relative humidity Minimum humidity Maximum humidity Dew point The dew point of air is the temperature at which while keeping the current barometric conditions as they are the air beco...

Page 14: ...tion to altitude The instrument features 2 units of measurement in relation to altitude m metres and ft feet To change the unit of measurement select the lower block it flashes then keep the button down when the desired unit appears release the button to confirm your choice Calibration of the altitude The instrument calculates altitude by using air pressure It is therefore quite normal for the alt...

Page 15: ...ou can find it by calibrating the QNH pressure provided you know the latter exactly Resetting the maximum altitude and the QFE height Select the lower block and display the measuring mode that you wish to reset it flashes then press the button for 2 seconds Selecting the unit of measurement in relation to pressure The instrument features 2 units of measurement in relation to pressure with the choi...

Page 16: ...ude of the landing runway the runway is at 0 metre It is also possible to use this function to measure any height depth the height of a building or the depth of an abyss for instance The QFE value is calculated in relation to the atmospheric pressure of the landing runway When you are on the runway at ground level the QFE is equal to the absolute pressure Two scenarios are offered to you when dete...

Page 17: ...wn operation to obtain increments of 10 units Confirm and exit the calibration by keeping the button down The instrument goes back to the standard screen Remark The instrument will display the QFE value QFE abbreviation displayed instead of the absolute pressure and this as long as the instrument remains switched on If turned off and back on again the instrument will display the absolute pressure ...

Page 18: ... button pressed down for 2 seconds starts flashing on the upper ock Release the bl button as soon as you access calibration To calibrate the compass hold the instrument vertically and turn around once slowly in a circle or the instrument alone Each time a cardinal point is acquired a section of the square symbol lights up on the large block The calibration process is complete when the whole symbol...

Page 19: ... In this case the Flight Level is 14 which corresponds to 1 400 feet above the 1013 25 hPa level Special Screens Special Measuring Modes Date and time Barometric pressure tendency Chronometer Density altitude Magnetic field in µTesla Variometer Finesse These modes are displayed on separate dedicated screens 1 screen per mode In order to display one or more of these modes you must have enabled it t...

Page 20: ...played if they are so enabled beforehand this avoids overloading the screens with data for which some users may have no use To enable disable one or several special mode s enter the special menu and display the screen of the desired special mode then using the button select to enable or to disable the mode Confirm your choice and exit the special menu by pressing the button for 2 seconds Once acti...

Page 21: ...entered in the same way as described under the Starting up the Instrument Section Barometric Tendency Display upper block indicates or when viewed large block tendency here variation within 24 hours middle block time shift lower block 1 Instantaneous state turned on for 5 sec or normal state except when viewing tendency displays the current pressure QNH 2 When viewing the tendency or by pressing b...

Page 22: ...010 8 with the pressure recorded 25 minutes ago This shows as a result that in the time span of 25 minutes the pressure has dropped by 0 2 hPa If the time was 11 43 the instrument would display 43 etc The pressure displayed is the pressure taken 1h and 25 min ago or the pressure read at 10 00 The instrument compares the current pressure 1010 8 with the pressure recorded 1h and 25 min ago and displ...

Page 23: ...strument extrapolates the QNH in order to offer as plausible a barometric tendency as possible Once stabilised the instrument will show the real QNH again The instrument signals when the QNH is extrapolated with the indication on the compass block see opposite In the same way the instrument will display the indication to signal that a calibration has been carried out see opposite The tendency is a...

Page 24: ...recording of all the measurements Density Altitude Display The density altitude is the current altitude should the air be in a standard air environment The density altitude is corrected using the real air density it therefore constitutes an essential factor in the computation of the performance of an engine or the lift of an aircraft The density altitude is displayed as followed upper block Wind s...

Page 25: ...ic field a magnet for instance display 0 µT on the screen and bring the magnet close to the instrument the display shows the magnetic field output expressed in µT Calibration Calibration is carried out as with the compass please refer to relevant section If you already have calibrated the compass basic mode in the standard screen there is no need to do it again unless you have just entered a diffe...

Page 26: ...rd screen compass heading Operation The Large block shows your speed The value is positive this corresponds to the rate of ascent whereas a negative value indicates a rate of descent There is a choice of two units M m s metre per second and hf hft min 100 feet per minute To change the unit select the middle block it flashes and keep pressing the button down release the button when the desired unit...

Page 27: ...strument features 3 types of memories Manual recordings Measurements at selected rate History Each type of memory has its own screen please refer to next sections The memory screen can only be viewed and configured through the special menu Memory capacity 24 480 records The duration of the recording allowed will depend on the selected rate for instance 2 5 days are possible if the recording takes ...

Page 28: ...question when the indication or is flashing When viewing recordings the message is displayed when you get to the end of the recordings there is an at the beginning and at the end of the recordings If the message appears this means that the instrument is currently searching for data You need to wait until the indication disappears The instrument automatically exits the view mode after 5 seconds or ...

Page 29: ... date and stores all the readings of all the sensors including the combination of sensors at the time of the recording Viewing To view the recordings made automatically go to the special menu and display the Measurements based on selected rate then press briefly the button to view the recorded values The viewing process is the same as that followed for Manual Recordings please refer to previous Se...

Page 30: ...ures the time and date and stores all the readings of all the sensors including the combination of sensors at the time of the recording Viewing and rate selection The process for viewing and selecting the rate is the same as that used for Measurements based on Selected Rate please refer to previous sections Other States of the Instrument The instrument features several operating states To find out...

Page 31: ...f but the clock and automatic recordings are still active The instrument switches to the OFF state after being turned off manually or automatically please refer to the Section entitled Turning the Instrument Off Automatic Stop The auto stop state means that the instrument will switch off automatically three minutes after one of the buttons was last pressed default setting or when turned off manual...

Page 32: ... Stop state redo the same operation or switch the instrument off If the instrument remains constantly turned on the battery is depleted faster keep that in mind Data transfer to a PC This requires the use of the interface and the SkywatchLog software available as an option SkywatchLog itself controls the instrument remotely When the instrument is transferring data to a PC the screen displays the m...

Page 33: ... screens and formatting the standard screen as follows upper block mean wind speed large block instantaneous wind speed middle block ambient temperature lower block altitude compass block heading In order to reset first display the standard screen featuring the basic measuring modes no selection then keep the 3 buttons pressed down simultaneously When the screen displays release the buttons and ke...

Page 34: ...th the reference CR2032 which is placed behind the lid at the back of the instrument A second identical battery is located inside the compartment thus acting as a spare battery Important note the spare battery is also there to hold the active battery in place which means that the instrument can only work properly when fitted with both batteries To replace the battery ies of the instrument 1 Unscre...

Page 35: ...mp out of its housing 2 Unscrew the cap the part containing the LED see picture opposite 3 Remove both used batteries and replace them with 2 new batteries Be mindful of the polarity The facing down see picture opposite 4 Screw the cap tightly back on 5 Put the LED lamp back into the casing of the instrument Condition of the instrument battery The instrument gives you the possibility to check the ...

Page 36: ...nstrument turned on once a day for 30 minutes history with a rate of 1 recording every 20 seconds LCD Display Test This test is used to check if all the LCD segments are operating With the instrument switched off press down simultaneously the 3 buttons for 2 seconds all the segments light up as shown opposite To stop the instrument keep down Temperature Compensated Quartz The instrument uses a tem...

Page 37: ...le but only via SkywatchLog Technical Specifications Precision Wind speed 2 Temperature 0 5 C at 25 C Humidity 2 at 50 rH Pressure 0 5 at 25 C Compass 3 Clock 0 1 second per day possible if calibrated Display resolution Wind speed 0 1 unit 99 9 then 1 unit 100 0 1 at 25 0 Beaufort Temperature 0 1 99 9 then 1 100 Windchill temperature 0 1 99 9 then 1 100 Dew point 0 1 99 9 then 1 100 Humidity 0 1 r...

Page 38: ...t Pressure hPa mbar inHg inches of Mercury Altitude m ft feet Variometer m s hft min 100 feet per minute Operational temperatures Easy reading from 10 C to 70 C Possible reading from 20 C to 10 C Very slow display but instrument able to work the sensors and recordings are operating correctly from 40 C to 20 C Miscellaneous Power Supply instrument 4 x 3V lithium CR2032 button batteries supplied 1 f...

Page 39: ...cement shall be carried out at no charge to the customer parts or labour Transport costs however shall be borne by the customer This warranty does not cover damages caused by an accident abnormal or excessive use or resulting from an unauthorised modification or repair To avail of this warranty please send the instrument postage paid and in a suitable packaging to your dealer As a proof of purchas...

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