Electronic Precicion Barograph Operating Instructions
Contents
1. Einstellen gt andern eingeben 4 alter enter run Aufzeichnen 4 O Com trAnSP Raber Elektr Ger te Transport CH 6024 Hildisrieden Swiss made N Transport mechanism Paper roll Serialnumber Batteryholder PC Interface Front f ont face Reverse face RABER Elektronische Ger te Meteograf 3 Fitting the Battery The Mdagef requires a single Alkali Manganese 1 5V battery Typical sizes AM2 LR14 with a diameter of 26 mm and a length of 50 mm With this battery the Md amp agef will operate at room temperature for up to one year When fitting the battery ensure that its polarity is correct Fitting the paper roll Fold a 90 point in the end of the paper roll Fit the paper roll into the right side of the chamber and push the point as far as possible into the slot in the transport spindle on the left side of the chamber Wind the spindle one or two complete turns in the direction indicated in the sketch ensuring that the teeth of the transport mecha nism mesh cleanly with the holes in the edge of the paper The time axis on the paper roll is marked with days of the week Monday through to Sunday each of which is sub divided into 24 one hour segments Align the paper with the current time and day of the week approximately 20 mm right of the scriber point This en sures that only a minimal correction will be requ2. buttons gt lt the aural storm warning may be switched off after it has been triggered It will sound again if the preset rate of change of pressure is exceeded again Zoom function SE hP SSD Tea AP or 29998 in 7 90 008 n The Meeg zoom function enables relatively small pressure changes to be indicated e Using the left hand button U move from the standard air pressure display Current air pres sure as previously will then be displayed alternating with the pressure change in the previous 1 5 15 30 and 60 minute periods The display will automatically scroll through the above sequence with each step being displayed for 2 seconds The indicated data will be updated at 1 minute intervals e Using the right hand buttons gt lt the aural storm warning may be switched off after it has been triggered It will sound again if the preset rate of change of pressure is exceeded again Activation and de activation of storm warning LALL J When the LCD display shows CALL X the level of the aural storm warning set as described in the Adjust mode can be set If OFF is selected the aural warning will be switched off leav ing only a visual warning a blinking hP display If On is selected the warning tone is given once every minute for as long as the rate of change of pressure is above the preset limit or until it is switched off using one of the right hand buttons gt lt If a digit between 1 and 9 is s
3. your PC already has Excel installed RABER Elektronische Ger te Meteograf 7 Confirm your download requirement with the command Download The data will then be transferred to the PC As the Meteograf does not have an internal clock the downloaded data will be stored in a Text File under the current date and time on your PC Excel will then be started and one ore two charts will be created The data in the Text File may be further manipulated or copied to another location f this is not done it will be overwritten during the next download If no chart is required or if you do not Excel installed the command New Excel chart should not be selected The data will still be stored in the PC in a Text File as described above Important information Battery The M dege is designed to operate with one Alkali Manganese Battery Thanks to its low power consumption the device will run from a single 1 5V battery typical size AM2 LR14 for between 9 and 12 months at room temperature As with many types of battery the Alkali Manganese battery will increase its discharge rate at high temperatures which results in a reduced battery life At low temperatures the battery is incapable of releasing its full charge To maximise the battery life operation of the Mdangef in extreme temperatures should therefore be avoided if possible as should the use of batteries which have been stored for an excessively long
4. H ek EDA ano KON Sa je EKLERE n PVEM iru eh eS Barograph ICION U W a O J U Oo LLI Operating I nstructions DESEAPION Sa re one 3 The Melesaal Asien re ae kon eee kree a bal ay 3 Set Up EittiAQ thS DAVWONY ek dekale a kn n n oot n kika A SA a ea 4 Fitting the paper roll Switching on the device Closing the cover Adjusting the scriber Adjusting the paper position Adjustment Setting air pressure from a known altitude n n rerererrresrronrnonnne 5 Setting air pressure directly Setting the storm warning Resetting the time scale To select the required unit Display Air pressure indication ana see en 6 Zoom function Display of current air pressure and rate of pressure change Activation and de activation of storm warning Transport Air pressure changes due to change in operating elevation 6 TFOUDIG SAOONAQ Nein 7 PC interface description aaa eee a an AAA n ea ER ala ka 7 Software installation download Important information Battery essen 8 Paper and Battery change Battery charge indicator Storm warning Filter gencor seedee niire ETE EELEE E TESE 9 Location Indicating paper Maritime installation Storage Maintenance Summary OP MENU OPTIONS ae ee 10 Display dimensiohs srecna ora iite een 11 Tec nicakdata 9 ian e e ba en See ea ei 11 Accessories available acccisssscvessevnasesnenteasssroveaeesouverkdevacadsgnadiessiiiacusasnci ds 12 Safety Notice The Md
5. Installation panel Mirror Black Installation panel Mirror Silver Installation panel Chrome plated steel dim Installation panel Mirror Gold The latest information can be found on our Homepage under ww p raeber ch 28 12 2005 P RAEBER Electronic Instruments Malorain 24 CH 6024 Hildisrieden Switzerland Tel 41 41 461 00 81 Fax 82 E mail praeber gmx ch 12 Meteograf R BER Elektronische Ger te
6. aygef is an aid for prediction of weather conditions It cannot re place a professional weather forecast or make the correct preparations for adverse weather conditions unnecessary Other indicators of approaching weather such as clouds wind strength and direction etc should also not be ignored 2 Meteograf R BER Elektronische Ger te The Mdagd is a precise electronic barograph designed for the observation and recording of climatic pressure changes The scriber point engraves the fluctuating pressure onto the reverse side of the waxed indicating paper roll The resulting mark is immediately visible in the main display window as a clear clean linear indication The continuous rectilinear record is therefore produced without using felt tip markers or pens There is no dirtying of the fingers or of the apparatus itself and no requirement to replace or replenish markers or pens Because the scriber is behind the paper a new paper roll can be loaded into the apparatus as easily as a film into a camera In addition the Md amp agef has a numerical LCD Display This normally shows the current air pressure but is also used to select and adjust the Mdasgzf s operating functions The LCD can be used to observe short term pressure changes which would be indiscernible on the main display This is called the Zoom function A microprocessor controls all the functions of the M aagrdf An analogue signal from the internal pressure se
7. et the warning tone will sound for the specified number of times before automatically switching itself off e g if 4 is selected the warning tone will sound four times at one minute intervals e The right hand buttons gt are used to set the required values Leaving the Display mode The Display mode can be changed to either the Adjust mode AdJUST or to the Transport mode trAnSP if required e Using the left hand buttons change the display to either AdJUST or trAnSP Using the right hand buttons gt lt confirm the menu change e Note that on leaving the Display mode the data record required for the Zoom function will be cancelled New data storage will begin only when the Display mode is re selected moto PAN JI Jt L e bon Transport Transporting the Mdagzf usually results in a change in altitude which in turn produces a change in air pressure unrelated to any meteorological effects In the Transport mode it is assumed that no weather related changes in air pressure occur during the relocation of the device This assumption is naturally more valid if weather conditions are relatively stable during the transport phase and if the transport phase is of short duration Transport mode is selected when in Display mode by using the left hand buttons f L to show trAnSP on the LCD display and then using the rig
8. h the Menu using the left hand LH buttons Use the RH button gt to move the paper to the correct position Note The paper cannot be moved backwards Adjust Use the RH buttons to change to the ADJUST mode Use the RH buttons to set the correct altitude The air pressure is automatically adjusted to suit this altitude Use the RH buttons to set the correct air pressure The altitude is automatically adjusted to suit this air pressure Display blinking Use the RH buttons to set the pressure change rate at which the Storm Warning alarm will be triggered 1 5 hPa h 0 03 0 15 inHg h or Off TY Use the RH buttons to set the required Time Change e g Changing from summer to winter time crossing a time zone Scrolling through the Menu using the LH buttons til select the required unit for altitude in metres or feet If no button is pressed for a period of 30 seconds the Mdagzf will automatically switch to run select the required unit for barometric pressure in hectopas cals hPa or inches of mercury inHg Display Use the RH buttons to change to the DISPLAY mode Main display records the air pressure the Secondary display shows the current air pressure run Main display records the air pressure the Secondary display shows the current air pressure alternating with the change in pressure over the previous 1 5 15 30 and 60 minutes TY U
9. ht hand buttons gt lt to confirm the selected mode 6 Meteograf RABER Elektronische Ger te During the Transport mode the scriber will be locked into its current position A horizontal line will therefore be marked onto the indicating roll for the duration of the transport The LCD dis play will blink showing either the air pressure or the altitude e The left hand buttons t L are used to scroll through the menu In the Transport mode they are not used to set any required values Selection of other modes If the air pressure has not changed during the transport of the Mdasgaf the Transport mode is simply left by selecting the Display mode The LCD display should show run If the air pressure has changed during the transport of the Meeg the Adjust mode should first be selected so that the new air pressure can be input The LCD display should show Ad JUST e Using the left hand buttons T L select either the Display or the Adjust mode as required Confirm the choice using one of the right hand buttons gt lt Trouble shooting Problem Possible cause No display or other functions Battery flat or incorrectly fitted Irregularities in displayed or indicated air Air conditioning or similar system is influencing pressure local air pressure The Mdagef is being transported without first selecting Transport mode Local electro magnetic transmissi
10. ime scale can be changed For example when chang ing between summer and winter time or moving across an international time zone If it is required to move forward the paper roll is advanced by the required amount on leaving the Adjust mode If it is required to move backwards the paper is held stationary for the required time e Using the right hand buttons gt lt set the required change in the time scale e Using the left hand buttons select another menu option or switch to the Display mode N so mn m re To select the required unit TAL Nick FALE FEEL or P hP oy P mAb e Using the left hand button set the display to either ALt for altitude in metres or feet or P for barometric pressure in hectopascals hPa or inches of mercury inHg Then use the right hand button to select the required unit Leaving the Adjust mode e Using the left hand buttons fi L change the display to run Using the right hand buttons gt lt confirm the menu change RABER Elektronische Gerate Meteograf 5 Display I um In the Display mode the Mega shows the variation in air pressure as a function of time The left hand buttons f may be used to scroll through the menu Air pressure indication 2158 hP or 29998 m The LCD display shows the current recorded air pressure in mBar hPa e g 1013 2 hP or inHg The display is updated at 1 minute intervals e Using the right hand
11. ired when the paper is positioned See below A jo Switching on the device Closing the cover 0000000 After pressing the ON button close the perspex cover The LCD display will then indicate 8 8 8 8 8 8 8 8 to test that all elements of the display are functioning correctly The scriber point moves to indicate a pressure of 1010 mBar or 29 8 inHg The paper will be indexed for ward by approximately 5 mm and the LCD display changes to PoS 1010 or pos 29 8 To change the unit used to denote barometric pressure hPa or inHg select the required unit using the ADJUST Menu ref Sheet 5 Afterwards the barograph should be switched Off and then On again Note If no button is pressed for the next 30 seconds the Mdagzf will automatically switch to the Adjust mode PoS 1010 or PoS 29 8 and PAPEr see below can be reset only by switching the device off then on again y a x L m E AOU Adjusting the scriber Poo ior fai dad In the event that the scriber point does not lie exactly on the 1010 mBar or 29 8 inHg line the scriber can be adjusted using the buttons to the right of the LCD display gt moves the point up down If necessary press the left button to change the display to PAPEr and move the paper slightly to determine the exact position of the scriber point before resetting the diplay to POS 1010 or Pos 29 8 Any corrections made a
12. ll increase with altitude In the majority of applications however this error can be accepted e The LCD display will show ALt 0000 the approximate elevation above Sea Level Using the right hand buttons gt lt change the display to correspond to the actual elevation in metres e Using the left hand buttons select another menu option or switch to the Display mode a 1111212 2 A Setting air pressure directly tie hror L 1998 mn In the event that the exact local air pressure reduced to Sea Level is known it can be input directly into the M ege e The LCD display should show the air pressure e g 1013 2 hP Using the right hand but tons gt lt change the display to correspond to the actual air pressure in mBar hPa The altitude display see above will be automatically adjusted to correspond to this air pres sure e Using the left hand buttons select another menu option or switch to the Display mode e A Srorcr Jeo sro nn Setting the storm warning UALE ChPortunte du When the LCD display shows GALE 2hP the rate of change of pressure required to activate the storm warning in mBar per hour can be set e Using the right hand buttons gt lt set the indicated value to 1 5 hP 0 03 0 15 inHg or to Off e Using the left hand buttons select another menu option or switch to the Display mode 1 1 L Resetting the time scale con When the LCD display shows O h the t
13. ncompatible with the Mdasgef battery charge indicator Storm warning Flashing hP display and aural tone if selected The weather and most critically the wind are dependent on the rate at which atmospheric pressure changes For every geographical latitude a rate of change of air pressure is defined which is considered to indicate forthcoming storm conditions Hence the following settings are suggested for the Mdexgef storm warning From 1 mBar hPa h at 20 to 40 latitude From 2 mBar hPa h at 40 to 60 latitude i e Europe From 3 mBar hPa h at 60 to 80 latitude The optimal setting of the storm warning should be decided by the individual user Too low a setting will obviously result in a number of false alarms whilst too high a setting will result in no warning being given of impending storm conditions Setting of the storm warning is described in the instructions covering the Adjust mode Display showing GALE with setting of the aural warning being covered in the Display mode Display showing CALL 8 Meteograf R BER Elektronische Ger te The pressure change a in a 60 minute interval or b twice the pressure change in a 30 minute interval or c four times the pressure change in a 15 minute interval will set off the storm warning if it exceeds the setting of the storm warning input in the Adjust mode Filter In order to prevent rough seas from causing fluctuation
14. nna as the signals could interfere with the Mdasgafs operation Storage If the Mdexyef is not used for any length of time ensure that the battery is removed Even the highest quality batteries can after prolonged storage leak and damage the inside of the Me tegd The Meg should be stored in a dry place Maintenance The M agrd should be cleaned using a soft cloth or tissue if necessary soaked in ethanol No cleaning solvents should be used as they could damage the plastic components Apart from changing of the battery and the indicating paper the Mdexyef requires no mainte nance The device also contains no adjustable parts The interior of the device contains no components trim potentiometers etc which can be adjusted There is therefore no requirement to open up or dismantle the device and any at tempt to open the Mdasgzf will invalidate the manufacturer s guarantee RABER Elektronische Ger te Meteograf 9 Summary of Menu Options Mode Display Description An AGOGDDOO Press On button gt Display test gt Scriber point moves to 1010 mBar or 29 8 inHg line gt Paper indexes forward 5 mm gt Display automatically changes to Pos 1010 or Pos 29 8 Use the right hand RH buttons to correct the scriber point position to 1010 mBar or 29 8 inHg This correction is stored in the device memory and is automati cally incorporated the next time the unit is switched on Scrolling throug
15. nsor is amplified in a signal processor digitalised and input to the microprocessor which calculates and outputs the air pressure Linearity and temperature correction factors for the pressure sensor are pre programmed into the microprocessor thus making the installation of trim potentiometers unnecessary This guarantees an extremely high accuracy over the whole operating temperature and pressure range as well as optimal long term stability To reduce power consumption the microprocessor is automatically switched to an energy saving mode between measurements with only the LCD display and other basic functions operating continously An electronic filter cancels out fluctuations in indicated air pressure caused by operation in rough water The paper movement is controlled to extremely high tolerances by a small servo motor A second servo motor controls via a spindle the movement of the scriber An aural and visual alarm makes the user aware of dangerously rapid pressure changes which give warning of a forthcoming storm To ensure maximum reliability and durability the Mdasgef uses high quality gold plated electrical contacts throughout For the battery connections these are duplicated The Meteograf Buttons To scroll menu LCD Display Buttons To set parameters Elektronischer Prazisionsbarograph high precision electronic barograph Men s menus 7 Tasten keys 77 A rolenimM Adjust von
16. ons are interfering with the electronic devices inside the Mdeged Display is blinking Scriber leaves a horizontal Transport mode has been selected by mis line on the indicating paper take PC interface only applicable to units fitted with this feature Description The Meteograf contains a memory in which the barometric pressure data recorded over the last ten days is stored The data is recorded to a tolerance of 0 1 hP Equivalent to 0 1 mBar Using the data transfer cable supplied this data can be downloaded to a PC for permanent storage or for further manipulation The software is compatible with Microsoft Windows Versions 95 98 NT 2000 and XP Using the Excel program the data downloaded can be automatically displayed graphically using a Macro function As this software is freely available it can be customised by the operator to suit his or her indi vidual data processing requirement Software installation Close all open applications Insert CD The installation procedure should then automatically start If required the program file may be changed Download On the Microsoft Setting Control Panel select Regional Settings Date DD MM YY Connect the Meteograf to the PC and start the Download program Under COM select the applicable PC interface Select New Excel chart if you wish an Excel chart showing the data to be automatically cre ated It is assumed that
17. rature Range 15 C to 50 C 14 F to 120 F Index Rate 2 2 1mm h 24 mm Tag Display Main Asa Shows recorded pressure from previous 4 days Recording Method Rectilinear Maintenance free Paper CapacCity eeeeeeerooee 1 Year Display Secondary 8 digit 7 mm LCD Liquid Crystal Display B en everett a ar Mean value averaging for compensation of high sea states Storm W rmiNdg cssessekee Auraland visual Set point adjustable Electricity Supply eee 1 Alkali Manganese 1 5 V battery 1 year s operation Dimensions asien 146 x 120x36 mm 5 75 x 4 75 x 1 45 Weight 2 500 g inc battery and paper 1 10 Ib Typical values Not applicable to unit in wooden casing The manufacturer reserves the right to make changes to the unit specification Meteograf SA R BER Elektronische Ger te Accessories available Indicating paper Pressure hPa Set of 5 Rolls Indicating paper Pressure inHg Set of 5 Rolls e Replacement battery Available from any electrical goods dealer e Wooden housing Cherry e Wooden housing Mahogany e Wooden housing Walnut e Wooden housing Black e Chrome steel carriage e Wooden casing Casing black fitting mirror black e Wooden casing Casing Mahogany fitting mirror gold e Wooden casing Casing Walnut fitting mirror gold Installation panel Black dim e
18. s in the indicated pressure the micro processor program calculates the average pressure from a number of separate measurements Location The Meeg must have a fixed location Relatively small changes in elevation such as carrying the device from the ground floor to the cellar of a building or on inland waterways passing through a lock will influence the pressure measurement e g At Sea Level an elevation change of 1 m corresponds to a pressure change of c 0 12 mBar Indicating paper The barogram is inscribed onto a special waxed paper One paper roll is sufficient for one year s operation The paper is of high quality and may be stored for many years with no degra dation Note however that like all documentation it should be stored in a cool dry place The paper can easily be marked up using non soluble felt tip pens It is also possible to open the Meeg s perspex cover and mark up the paper roll whilst the device is operating Note that when re closing the cover it is important to make sure that the holes in the paper roll are still engaged with the cogs of the transport mechanism The barogram can be easily photocopied or input into a Personal Computer using a Scanner Maritime installation When installing the Mdasgef ensure that it will not break free during stormy weather It should be mounted in a dry position and where it is protected from spray It should not be located in the immediate vicinity of a transmitter ante
19. se the RH buttons to set the number of aural alarm calls 1 9 On Off given when the Storm Warning is triggered Alarm sounds for 2 seconds every minute Scrolling through the Menu using the LH Use the RH buttons to change to the ADJUST mode buttons Er Ande Use the RH buttons to change to the TRANSPORT mode ALE 533 Only the paper moves the scriber point is locked The last altitude is displayed on the Secondary display Blinking tie AP 03998 n Only the paper moves the scriber point is locked The last air pressure reading is displayed on the Secondary display Blinking Display blinking m run Use the RH buttons to change to the DISPLAY mode TY Aasuat 10 Meteograf Use the RH buttons to change to the ADJUST mode R BER Elektronische Ger te Display dimensions m E N X ua 6 mm 1 4 in 146 mm 5 75 in Technical Data Pressure Range Display memory 940 to 1070 mBar 27 76 to 31 60 in Hg Pressure Range paper record 960 to 1055 mBar 28 35 to 31 15 in Hg Altitude Range cee 500 to 6 000 m 1 600 to 20 000 ft ROESOUINON sat eek 0 1 mBar oaen 0 003 in Hg Linearity ceveteesinctreceesediverdeveediemncdtuesdy lt 0 5mMmBar lt 0 0015 in Hg Temperature Error n se lt 0 02 mBar C lt 0 0006 in Hg C Tempe
20. t this time will be repeated automatically the next time the device is switched on oOoor Adjusting the paper position rnrcr Press the button L to the left of the display which will then indicate PAPEr With the right button gt the paper can be indexed to a position corresponding to the current day and time Note that backwards indexing of the paper is not possible Once the position of both the scriber and the paper has been correctly set up press the button L to the left of the display to change to the AdJUSt mode 4 Meteograf RABER Elektronische Ger te Adjustment The Adjust mode is indicated by the flashing symbol on the LCD display The left hand buttons ff L are used to scroll through the various menu options The right hand buttons gt lt are used to set the required values or to confirm the required input If no button is pressed for 30 seconds the Mdasgzf automatically switches to the Display mode run Setting air pressure from a known altitude AL 539 In the event that the exact local air pressure reduced to Sea Level is not known the local altitude above mean sea level can be input The Mdagef then calculates the appropriate air pressure in accordance with the ICAO Standard Atmosphere Because the Standard Atmos phere only seldom corresponds exactly to local conditions all future pressure measurements will be subject to a small constant error This error wi
21. time Note also that excessive use of the but tons alongside the LCD display or of the aural storm alarm will run down the battery more quickly Paper and Battery change Before turning the device off or removing the battery record the current altitude indicated by the Mdagef ALt When the Mdagzf is re started this altitude may be input when in the Adjust mode The corresponding air pressure will then be automatically recalculated Battery charge indicator The battery voltage is regularly monitored and indicated on the LCD display by three small arrows in the upper left corner of the display Constant Voltage greater than 1 15 Volt Battery O K Blinking slowly Voltage between 1 15 and 1 0 Volt Battery change required soon Blinking rapidly Voltage between 1 0 and 0 9 Volt Battery change required urgently Lo bAt Voltage below 0 9 Volt Device accuracy cannot be guaranteed If the battery voltage sinks below 0 9 Volt the LCD display will as shown above change t Lo bAt and the air pressure will no longer be displayed Operation of the various menu functions will no longer be possible The scriber however will continue to mark the indicator roll until the battery is completely flat The battery charge indicator is designed to be compatible with Alkali Manganese batteries only Other types of battery such as rechargeable Nickel Cadmium cells have a completely different discharge characteristic and are i
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