Operating Instructions
Contents
1. Operating nstructions DescHpDIOR Ne 3 Overview ia iles QU FERREUS est 3 Set Up Fitting the battery SEE ee PO A Fave dde EEDRR 4 Fitting the paper roll Switching on the device closing the cover Adjusting the scriber Adjusting the paper position Adjustment Select the parameter to be recorded 5 select the required unit to be indicated Submenu Alarm Time adjustment Normal operating mode Display of Temperature and R H 6 Minimum and maximum recorded values Display of Dew point Minimum and maximum of Dew point Selecting the menu Adjust PC interface Description cat arse oss i uu AS Nr du 7 Software Installation Download Important information How to placeas cs acere Eta cetera dee oae c ete eee eae deus 7 Battery Battery charge indicator seii aene as deo dw a pe EROR S bao 8 Alarm signal Indicating paper Storage Maintenance Summary of Menu Options 9 10 DImenslOll M Ne eee ga N 11 Te hnicaldata ues ene te eee ded 11 ACCESSONES available 1e os tied e eR a cud cue he p Ll ier 12 2 H umigraf P RAEBER Electronic Instruments The Humigraf measures the temperature and the humidity of the air around it From this the dew point can be calculated The stylus presses against the waxed paper roll from the back leaving a permanent record of Relative Humidity Temperature or Dew point The record is immediately visible in the display2. will disable the Alarm function Z P ro LN Use 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 re Use the RH buttons to change to the ADJUST mode 10 H umigraf P RAEBER Electronic Instruments Display dimensions l f C AC Pago 1711 O D vO EL E O lt NI On o Off O m ooooooo pgugooooooooooooooo00 e EL E a 0000000 ooloooooooooooooooo Ul 36 mm 146 mm Technical Data Relative Humidity RANJE oe aes cT 0 100 ACCUTACY ek len itat etate itte pr cese io ses 296 between 10 to 90 R solutioN oboe etos t e posae 196 Temperature Range Display Memory 20 to 60 C Recording Rarige sree tetrad utente 5 to 45 C PUCCUNACY un een dent 0 4 C 0 to 40 C FOS OUMOM aa conteret eot eodd 0 1 C Dew point Range Display 20 to 60 C Recording Range 5 to 45 C Ac Uray ER 1 C RH gt 30 at 25 C Hes5olUllOIT esci in en ete 0 1 C Index Rate 1 mm h 24 mm day Display Mines ele etes Shows recorded data from previous 4 days Recording Method Rectilinear Maintenance free Paper Capacity is nain
3. as a clear continuous trace produced on a rectilinear axis without the use of ink or pens In addition the Humigraf has a numerical LCD Display This normally shows the current data s but is also used to select and adjust the Humigraf s operating functions Minimum and maximum values can be shown on the digital display at the touch of a button A microcomputer controls all the functions of the Humigraf The analogue sensor signals are amplified and digitalised in the Signal Processor and then input to the Microcomputer which then calculates relative humidity and temperature The compensation algorithm applied to the sensor guarantees an extremely high accuracy throughout the full operating i e temperature range The application of modern electronics no need for trim potentiometers ensures the long term stability of the Humigraf 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 continuously 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 acoustic and visual alarm indicates that the limit levels set by the user temperature and relative humidity have been exceeded To guarantee optimum reliability gold plated contacts are used throughout the Humigraf The battery connections use m
4. as radiators lamps and solar radiation This will of course cause incorrect temperature values to be recorded If the instrument is mounted on a wall ensure that the normal wall temperature is similar to that of the room being monitored do not select a poorly insulated external wall for example Battery The Humigraf 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 approximately 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 maximize the battery life operation of the Humigraf in extreme temperatures should therefore be avoided if possible as should the use of batteries which have been stored for an excessively long time Note also that excessive use of the but tons alongside the LCD display or of the aural alarm will run down the battery more quickly Battery charge indicator P RAEBER Electronic Instruments H umigraf 7 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 0 Volt Battery O K Blinking slowly Voltage between 1 0 and 0 8 Volt Battery change required soon Blink
5. signal generated when one of the limits set above is ex ceeded 1 9 the number of alarm tones per minute each tone 2 seconds long Off no acoustic alarm On continuous alarm tone Setting Ad JUSE to return to the adjust menu Time adjustment T When the display shows 0 h the recorder time may be adjusted e g when entering Summer Time or Winter Time or travelling across a time zone If a positive value is entered the re cording paper will advance by the required amount on exiting the Settings menu If a negative value is entered the paper feed will stop for the appropriate time Selecting normal operating mode run Using the left hand button 2 select run Confirm the menu change using one of the two right hand buttons gt lt Note that data recording will start 16 minutes after run has been selected This is the time required for the sensor to adjust to ambient temperature conditions and apply the compensation algorithm P RAEBER Electronic Instruments H umigraf 5 Display run In normal operating i e recording mode the Humigraf records the parameters selected Display of Temperature and R H Feo in The LCD display shows the current Temperature and Relative Humidity This display is updated once per minute Minimum and maximum values of Temperature and R H Using the right hand button gt the Maximum recorded values can be displayed Jeu 0 5b the right hand button displays the Mi
6. ble 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 Humigraf 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 your PC already has Excel installed Confirm your download requirement with the command Download The data will then be transferred to the PC As the Humigraf 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 three charts will be created The data in the Text File may be further manipulated or copied to another location If 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 Location Do not place the Humigraf where it is directly exposed to heat sources such
7. e 1 Year Display Secondary 8 digit 7 mm LCD Liquid Crystal Display Memory eer M 20 Days Relative Humidity and Temperature PC Interface eeeeseseeen RS 232 Com1 or Com2 Alarcon p es Pe Sound and visual Set point adjustable Electricity Supply vis cupo rtt ts 1 Alkali Manganese 1 5 V battery 1 year s operation DIMENSIONS P 146 120 36 mm 5 75 x 4 75 x1 4 Welght iuret te t a 500 g inc battery and paper 1 10 Ib Typical values only PC Version The manufacturer reserves the right to make changes to the unit specification P RAEBER Electronic Instruments H umigraf 11 Accessories available e Recording paper Humidity 0 bis100 Temperature and Dew point 5 C to 45 C e Replacement battery Available from any electrical goods dealer Wooden housing Cherry Wooden housing Mahogany Wooden housing Walnut e Wooden housing Black Chrome steel carriage Wooden casing Casing black fitting mirror black Wooden casing Casing Mahogany fitting mirror gold Wooden casing Casing Walnut fitting mirror gold Installation panel Black dim Installation panel Mirror Black 9 Installation panel Mirror Silver Installation panel Chrome plated steel dim 9 Installation panel Mirror Gold The latest information can be found on our Homepage under 21 11 2005 P RAEBER Electronic Instruments Malorain 24 CH 6024 Hildisrieden T
8. el 41 41 461 00 81 Fax 82 E mail praeber gmx ch 12 H umigraf P RAEBER Electronic Instruments
9. ing rapidly Voltage between 0 8 and 0 7 Volt Battery change required urgently Lo bAt Voltage below 0 7 Volt Device accuracy cannot be guaranteed If the battery voltage sinks below 0 9 Volt the LCD display will as shown above change to Lo bAt and the humidity and temperature will no longer be displayed Operation of the various menu func tions 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 incompatible with the battery charge indicator Alarm signal When one of the pre set Relative Humidity or Temperature limits is exceeded an in built buzzer will generate an acoustic alarm Simultaneously the affected parameter R H or Temperature will blink on the secondary LCD display This visual alarm signal can be cancelled by pressing one of the right hand buttons Note that setting the lower limits at 096 5 C and the upper limits at 100 45 C will disable the Alarm function Indicating paper The graph 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 degradation Note however that like all documentation it sho
10. nimum recorded values 138 hi Pressing both right hand buttons gt lt simultaneously reverts the display to the current values g b wd Display of Dew point d 45 The LCD display shows the current dew point calculated from the current temperature and humidity values This display is updated once per minute Minimum and maximum values of Dew point Using the right hand button gt the Maximum recorded value can be displayed dF 243 the right hand button displays the Minimum recorded value dfs 16 Pressing both right hand buttons gt lt simultaneously reverts the display to the current value ar B5 Selecting the Setting menu fd Ju 5t Using the left hand button amp select AdJUST Confirm the menu change using one of the two right hand buttons gt lt 6 H umigraf P RAEBER Electronic Instruments PC interface only applicable to units fitted with this feature Description Humidity and temperature data from the last 20 days is stored in a buffer memory A data point is recorded every 15 minutes to a resolution of 0 1 C 1 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 availa
11. per slight ly to determine the exact position of the scriber point before resetting the display to POS 50 Any corrections made at this time will be repeated automatically the next time the device is switched on MC o ooo Adjusting the paper position ni Press the button 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 amp to the left of the display to change to the AdJUSt mode gt tr 4 H umigraf P RAEBER Electronic Instruments OS MEL Adjustment NOU IL Select the parameter to be recorded rEL ios ue to record Humidity PC b m o s to record Temperature or PEL n to record Dew point Select the units to be indicated un it UL Indicates temperature recorded in Celsius unit YF Indicates temperature recorded in Fahrenheit Submenu Alarm ALAr The Alarm menu is accessed by pressing one of the right hand buttons Using these the Upper and Lower limits for a Humidity and b Temperature can be set i e Bua dur Lower Humidity limit 2096 CAL 805 Upper Humidity limit 8096 Aka 59E sus Lower Temperature limit 15 C ma JPL aa Upper Temperature limit 30 C CALL Adjusts the acoustic alarm
12. s the selected parameter the ell UT Secondary display shows the temperature and the UN relative humidity o gt Main display records the selected parameter the a 5 Secondary display shows dew point us baai Scrolling through the jeu 5b Maximum values Press the upper right hand button Menu using the left hand ig o C LH button 28 4 Minimum values Press the lower right hand button dP 9410 Pressing both right hand buttons gt lt simultaneously a dP ge g reverts the display to the current values Addunt Use the RH buttons to change to the ADJUST mode Sub menu Alarm M en The Lower limit for Humidity can be set with the right hand buttons gt P RAEBER Electronic Instruments H umigraf 9 Hi D ni HMLIIHIMF FN 0703 Scrolling through the Menu using the left hand LH button If no button is pressed for a period of 30 seconds the Humigraf will automatically switch to AdJUSt Setting 0 will disable the Alarm function The Upper limit for Humidity can be set with the right hand buttons gt lt Setting 10096 will disable the Alarm function LATO MU m Pm LO Ll The Lower limit for Temperature can be set with the right hand buttons gt lt Setting 5 C 23 F will disable the Alarm function Bo c 22 m Pm The Upper limit for Temperature can be set with the right hand buttons gt lt Setting 45 C 113
13. st 3 Scriber point moves 50 line Paper indexes forward 5 mm gt Display automatically changes to Pos 50 Scrolling through the Menu using the left hand LH button Use the right hand RH buttons to correct the scriber point position to 5096 This correction is stored in the device memory and is automatically incorporated the next time the unit is switched on If no button is pressed for a p p period of 30 seconds the PA Humigraf will automatically switch to AdJUSt PE Use the RH button gt to move the paper to the correct position Note The paper cannot be moved backwards Use the RH buttons to change to the ADJUST mode Use the RH buttons to change to the run mode Use the RH buttons to select the parameter to be recorded Relative Humidity Temperature Dew Point Rd JUSt rtu Hu Ad suse UE EC mere IRE Or M uUo IL Or Scrolling through the unit L Menu using the left hand Ha it r LH button Select the required unit Celsius or Fahrenheit If no button is pressed for a period of 30 seconds the Humigraf will automatically switch to run TAL Art Use the RH buttons to change to the sub menu Alarm Sub menu see below Use the RH buttons to set the required Time Change e g Changing from summer to winter time crossing a time zone run Use the RH buttons to change to the DISPLAY mode Display Main display record
14. the teeth of the transport mechanism 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 as 1 to 7 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 ensures that only a minimal correction will be required when the paper is positioned See below Z g E 00000000 Switching on the device closing the cover OOOH 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 position of 50 The paper will be indexed forward by approximately 5 mm and the LCD display changes to POS 50 Note If no button is pressed for the next 30 seconds the Humigraf will automatically switch to the Adjust mode POS 50 and PAPEr see below can be reset only by switching the device off then on again RE One Cr Adjusting the scribe FUI 2L In the event that the scriber point does not lie exactly on the 50 line the scriber can be ad justed 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 pa
15. uld 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 Humigraf 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 graph can be easily photocopied or input into a Personal Computer using a Scanner Storage If the Humigraf 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 Humi graf The Humigraf should be stored in a dry place Maintenance The Humigraf 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 Humigraf 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 Humigraf will invalidate the manufacturer s guarantee 8 H umigraf P RAEBER Electronic Instruments Summary of Menu Options Mode Display B B B B D D D D Press On button Display te
16. ultiple contacts to ensure no open circuits Overview Sensor LCD Display Buttons Button To set parameters To scroll the menu Jj gt LI v 2859 y d A igraf na vb Leu on 2 u e LIA Q O n 7 bulo 000000000000000 Feuchte Temperatur Taupunkt humidity temperature dewpoint Men s menus Tasten keys gt wn rollen im Menu z RdJUSE Y eol T ansport mechanism Einstellen D ndern eingeben ron change enter Aufzeichnen Q Com I fi fr Rabel Elektr Ger te Alarmiergn CH 6p24 Hildisrieden QoJOOoo0ooocooooOooOooo0oo0oOQ o o en vu Swiss made Paper roll Serialnumber Batteryholder PC interface Front face Reverse face P RAEBER Electronic Instruments H umigraf 3 Fitting the Battery The Humigraf 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 Humigraf 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
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