Instruction Manual
English How to use this Manual Thank you for selecting a SKYWATCH® instrument. While this instrument was designed for ease of use in mind, we recommend that you spend a little time reading this Manual in order to be able to use it to its full potential. Where to find information All the headlines and sub-headlines are regrouped under the ‘Table of Contents’. Throughout the Manual, you will discover special symbols which highlights important aspects, general information and warnings.
Table of Contents How to use this Manual ........................................ 2 Where to find information .......................................................2 Symbols used in this Manual .................................................2 Table of Contents............................................... 3-5 Introduction........................................................... 6 Background information .........................................................6 WARNING ................................
Selecting the unit of measurement in relation to pressure ..15 Calibration of relative pressure (QNH) .......................... 15-16 QFE height...........................................................................16 Resetting the Maximum Altitude and the QFE Height .........16 Calibration of QFE pressure ................................................17 Compass.................................................................................17 Display .................................................
Manual Recordings................................................................27 Display .................................................................................27 Operation .............................................................................28 Viewing .......................................................................... 28-29 Measurements Based on Selected Rate..............................29 Display .................................................................................
Introduction Background information The GEOS N°11 is a high performance instrument used by professionals, the culmination of our 25 years of experience in the development and manufacturing of measuring devices. It is solely built with industrialquality components and uses Swiss-made barometric pressure, wind speed, humidity, and temperature sensors.
Description of Instrument Legend a b c d e f g wind sensor (impeller) protective sphere around the impeller weather vane black metal case ribbed rubber strip modification (MOD) button plastic frame h i j k l m lid of battery compartment light emitting diode (LED) lamp selection (SEL) button luminosity (LUM) button mineral glass window protection slots for the sensors Functions (Measuring Modes) Wind speed: - instantaneous - average - maximum Temperature : - instantaneous - minimum - maximum - windchill
Description of Display Screen the A B C D E Sections of the Upper block Large block Middle block Lower block Analogue compass block Display principle with regard to functions (measuring modes) Each measuring mode occupies a very particular space on the screen. Measuring modes are always displayed following the same principles, i.e.: - 1 standard screen containing all the basic measuring modes. - 1 screen per special mode, when activated.
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.
down to confirm your setting, the instrument is than activated and displays the standard screen. Remark: Setting the date and time may also be carried out at a later stage. Please refer to Section on ‘Special Modes’; ‘Date and Time’. Instantaneous State (The instrument remains turned on for only 5 seconds) This state allows you to see the current measured values at a glance, while saving the battery.
manual stop, the instrument sets itself back by default in the auto-stop state. Releasing the button during the countdown, brings back the default screen on the instrument. Basic Measuring Mode (Standard Screen) Reminder : All the basic modes that are described hereafter are available on the same screen ( standard screen), only the special modes avail of a screen per mode (see relevant section).
Wind speed Measuring modes Instantaneous wind speed Maximum wind speed Average wind speed The measuring modes for the maximum and average wind speeds are displayed on the upper block, while the instantaneous wind speed is displayed on the large block. In order to access the measuring mode for the maximum reached or average wind speed, select (with the help of the button) the upper block (it flashes), then use the button to modify the block display and switch from one measuring mode to another.
The various measuring modes in relation to temperature are displayed on the middle block. In order to access a measuring mode, select (with the button) the middle block (it flashes), then use the help of the button to change the display on the block and switch from one measuring mode to another. Above 24°C, Heat Index is in place of Windchill.
Resetting the minimum and maximum humidity to zero Select the middle block and display the measuring mode that you wish to button for 2 seconds. reset (it flashes), then press the Pressure Measuring modes altitude altitude maximum pressure relative (QNH) height QFE pressure absolute flight level The various measuring modes in relation to pressure are displayed on the lower block.
Select the lower block and display the measuring mode in relation to altitude (it flashes), then keep pushing the button down. starts flashing on the upper block. Release the button as soon as you enter the calibration function (screen opposite). Use the button to select which way the setting is made ( increment, decrement), then set the value of the altitude using the button. Pressing briefly on the button sets the value in increments of 0.1 unit.
Select the lower block and display the measuring mode in relation to relative pressure (it flashes), then keep pushing button down. starts flashing on the upper block. the Release the button as soon as you enter the calibration function (screen opposite). Use the button to select which way the setting is made ( increment, decrement), then set the value of the pressure using the button. Pressing briefly on the button sets the value in increments of 0.1 unit.
Calibration of QFE pressure In aeronautics, the QFE pressure corresponds to the pressure on the landing runway (ground level), and is used as the basis for calculating the height above ground level. Air traffic control will give you this pressure value. Select the lower block and display the measuring mode in relation to the QFE height (it flashes), then keep pushing button down. starts flashing on the upper block. the Release the button as soon as you enter the calibration function (screen opposite).
There are two types of compass display: bargraph on the compass block (always visible) and digital display on the lower block. Select button (it flashes), the lower block with the then display the compass using the button. WHICH MEANS : The default setting of the compass is for the magnetic North, and not for true North. It is however possible for the instrument to display it, provided the value of the magnetic declination has been entered; see ‘Special Modes’; ‘Magnetic Field’.
Flight Level Display In aeronautics. The Flight Level corresponds to an altitude expressed in hundreds of feet above the isobaric surface 1013.25 hPa, which allows all aeroplanes in the world to fly alongside each other risk-free, irrespective of the pressure values governed by local meteorological conditions. Select the lower block using the button (it flashes), then display the Flight Level with the help of the button. In this case, the Flight Level is 14, which corresponds to 1,400 feet above the 1013.
To display the special menu, press and hold simultaneously the and buttons, flashes on the upper block. When stops flashing, release the buttons. The special menu features 10 screens (7 screens for special modes and 3 screens for the memories): Navigate (switch from one screen to another) in the special menu with button. To exit the menu, keep pressing the button the help of the for 2 seconds.
Date and Time Display upper block: day of the week large block : date middle block: month lower block: time and year + seconds on the bargraph Operation The year is displayed by pressing briefly the button, release the button, and the time is shown again. The seconds are marked on the compass bargraph. Calibration Select the date and time screen (it flashes), then keep the button pressed down. starts flashing on the upper block. Release the button as soon as you access calibration.
The tendency is displayed using 63 values. The first 3 values show the variations in relation to the current pressure, the next 46 values in relation to the last measured pressure on the hour, and the last 14 in relation to the last pressure read at noon.
The pressure displayed is that of 2 days earlier, i.e. the pressure recorded at noon (12:00) on April 28th. The instrument compares the last pressure read at noon (here, the pressure measured at noon on April 30th, 1011.9) with the pressure recorded 2 days earlier and displays the difference. This shows that the pressure has dropped by 2.1hPa in 2 days.
Operation Pressing both the and buttons briefly at the same time launches the chronometer (brief display of the message ). This can be done from any screen, and whether the instrument is turned on or off. Pressing briefly the button freezes the screen, which allows to read an intermediate time (the instrument keeps counting the time while the display is frozen). The chronometer returns to normal mode at the end of 10 seconds or by pushing on twice.
Magnetic Field in µTesla + Compass Heading Display This mode is displayed as follows: upper block: wind speed large block : heading in degrees middle block: indicates , = degree (unit of the large block) and = micro Tesla (unit of the lower block) lower block: magnetic field in µTesla Operation The role of this mode is twofold: 1. allow a larger display of the heading in degrees 2. know the value of the magnetic field drift in µTesla in relation to the calibration.
button to select the direction of the adjustment ( increment, decrement), then set the value in degree of the declination with the help of the button. Keep the button down to confirm your setting, release it, and then press it down again to exit the special menu. IMPORTANT ! When a declination has been stored, all the display modes of the compass will show true North and no longer the magnetic North. Should you wish to display the magnetic North at a later stage, you will need to reset the declination.
Operation It is not possible to modify any data on the finesse screen. It is necessary for the impeller to rotate and there must be a drop in altitude for finesse to be displayed. To calculate finesse, the instrument takes the mean wind speed as the horizontal velocity and the data supplied by the variometer as the vertical velocity. Memories, Viewing and Settings 24,480 sets of memories are available.
Operation This type of memory displays all the recordings carried out manually. To record manually (from any screen, whether instrument turned on or off), press simultaneously the and buttons for a short time. The indicates that the recording has indeed been message made. Please note that this button combination is also used to launch the indication.
Measurements Based on Selected Rate Display is displayed if the memory is empty (no recordings). The default screen is used to display the memory content. In the example shown opposite, this screen is the standard screen with the basic measuring modes (wind speed, temperature, digital and analogue compass heading). The upper block displays or / which flashes when being accessed. Operation This type of memory displays all the automatic recordings made based on the selected rate (configurable from 0.
History Display is displayed if the memory is empty (no recordings). The default screen is used to display the memory content. In the example shown opposite, this screen is the standard screen with the basic measuring modes (wind speed, humidity, relative pressure and compass heading). The upper block displays or / which flashes when being accessed. Operation This type of memory displays all the automatic recordings made based on the selected rate (configurable from 0.5 second to 24 hours).
Storage The example shown opposite indicates that the instrument is in the storage state; the clock and sensors have stopped, and there is no automatic recording. This is the default state of the instrument when it comes off the production line, thus avoiding the depletion of the battery if the instrument is stored for a long period of time.
the button, then keep the button down ( flashes on the upper block). In the calibration mode (opposite screen), release the button. Set the time: pressing briefly on the button will change the direction of the setting ( increment and decrement), and short and long pushes on button are used to change the value. Once the adjustment is made, the keep the button down for 2 seconds to confirm your setting and exit the calibration mode.
your setting by keeping the button down, then release. Other states The instrument features another two states: normal (turned on) and instantaneous (please refer to the Section entitled “Starting up the Instrument”). Resets Memory reset (deletion) Empties the 3 types of memory, and resets the rates of automatic recordings. To erase all the memories, go to the special menu and display one of the 3 types of memory, then press and keep down simultaneously the 3 buttons.
simultaneously. When the screen displays all the segments (display test), release, and once more keep the 3 buttons down simultaneously. When the screen displays the message , release the buttons and press the MOD ( ) button down for 2 seconds to confirm. The instrument displays the message informing you that the reset operation has indeed been carried out. Instrument reset Remove the batteries for 20 minutes.
5. Check that the round seal is properly positioned in its groove, screw the lid back on using the 2 screws. Always pay attention to the polarity, as positioning the batteries the wrong way may cause damage. Batteries of the Light Emitting Diode (LED )Lamp It is imperative that the batteries of the LED lamp are replaced at the same time; do not use a battery that is already used or flat together with a new battery. To replace the batteries of the lamp: 1. Pull the LED lamp out of the instrument.
2. While the instrument is on, press simultaneously on the 3 buttons and then release: the following indications will appear: (the instrument is in the automatic stop mode), 127 (the software version) and the segments that are lit up (1 segment = 0.025V, no segment: <2.3V, all the segments lit up: >3.1V). This information is only valid for the battery supplying the instrument.
your setting, release it, and then press it down again to exit the special menu. Calibration of the Pressure Sensor This operation is reserved to those professionals who hold a highly accurate laboratory standard. The consequence of any wrong calibration will be to supply erroneous data on all the measurements relating to pressure. Calibration is carried out from the measuring mode for absolute pressure. Proceed in the same way as with the other calibrations.
Response time of sensors instantaneous From a few seconds to several minutes depending on wind speed From a few seconds to several minutes depending on wind speed instantaneous instantaneous Wind speed Temperature Humidity Pressure Compass Measuring range of sensors 0 to 300 (peak) km/h (186 mph, 83 m/s, 162 knots) -40°C to +85°C (-40°F to +185°F) 0.1 to 100%rH 10 to 1,100hPa (0.30 to 32.48 inHg) -1,000 to 21,535m (-3,281 to 70,653 ft) until 2175 ___0.
LIMITED WARRANTY JDC ELECTRONIC SA extends a 12 months’ warranty over parts and labour for this instrument, effective from the date of purchase. JDC ELECTRONIC SA reserves to itself the right to repair or replace any component which may have become faulty in the course of normal use. This repair or replacement shall be carried out at no charge to the customer (parts or labour). Transport costs however shall be borne by the customer.
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