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HM40 User's Guide M211088EN-B
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1. Measures a wide range of parameters RH Td Tw a x h T See section Parameters Explained on page 11 Large graphical display Graphs for selected parameter and temperature Interchangeable HMP113 probe Available with standard probe or remote probe handle Can be user calibrated Cusing the HMK15 humidity calibrator for example Powered by standard AA size batteries 2x Operation temperature range 10 C 60 C Belt clip Optional Membrane filter for HMP113 probe for increased protection against contaminants USB powered portable charger for AA size NiMH rechargeables For more information and order codes of the accessories see section Accessories and Parts on page 40 The HM40 Meter Front Filter and sensor HMP113 probe Display Left function Up Menu The HM40 Meter Back Belt clip Battery cover Batteries 2x AA HM40 With Handle Orientation mark Cable connector Probe holder HM4O handle You can connect the HM40 handle to the belt clip for single handed use Simply push the belt clip into the slot in the handle When the handle is connected to the meter in this way you can lay down the meter on top of the handle Batteries The HM40 is powered by two AA size batteries You can use the following battery types Alkaline IEC LR6 Lithium IEC FR6 NiMH IEC HR6 Do not mix batteries of different types Both ba
2. page 33 Chargers and Batteries You can order an external battery recharger with USB connection and compatible NiMH rechargeable batteries from Vaisala For more information see the following sections of this manual Batteries on page 9 Charging on page 1O Belt Clips and Battery Covers If you need a new belt clip or battery compartment cover you can order replacements from Vaisala 41 Technical Data Performance Relative Humidity Measurement range O 100 RH Accuracy including non linearity hysteresis and repeatability at O 40 C 32 104 F 1 5 RH O 90 RH 2 5 RH 90 100 RH at 10 O C and 40 60 C 14 32 F and 104 140 F 3 0 RH O 90 RH 4 0 RH 90 100 RH Factory calibration uncertainty at 20 C 68 F 1 5 RH Humidity measurement response time 90 with plastic grid filter 17s Stability 2 RH over 2 years Humidity sensor HUMICAP 180R Temperature Measurement range 10 60 C 14 140 F Accuracy over temperature range at O 40 C 432 104 F 0 2 C 0 36 F at 10 O C and 40 60 C 14 32 F and 104 140 F 0 4 C 0 72 F Temperature Sensor Pt1000 RTD Class FO IEC 60751 42 Mechanical Weight with alkaline batteries With standard probe With handle Materials Meter body Probe holder Probe Filter Housing classification Mechanical drop enduran
3. M ME EE 42 MecNaniC A M o E E DL 43 Suc eee ete eee een aren ean eee eee nena 43 Dimensions with Standard Probe 44 DIMENSIONS with Handle epa e bete bati ee 45 First Startup 1 Check that the HMP113 probe is securely attached and remove the yellow transport protection cap from the probe 2 Open the battery cover and insert two AA size batteries 5 Close the battery cover and turn on the meter by pressing the Power button If the meter does not turn on check the battery orientation Replace the batteries with fresh recharged ones if needed Initial Settings When you power on the HM4AO for the first time or after a factory reset of the settings you must first select the operation language The meter will then ask if you want to change the following settings Units Date Time If you answer Yes to the question recommended the meter will show the settings screens before showing the measurement view Use the arrow and function buttons to select For more information see section Settings Submenu on page 24 HM40 will retain the date and time even during battery changes The clock will have to be set again only if the meter is without battery power for several hours Product Overview The Vaisala HUMICAP Hand Held Humidity and Temperature Meter HM40 is a hand held meter for various portable measurement applications Main features Compact and robust housing
4. Tag on page 18 Indicators Alea 4 Td Twa x his Battery charge indicator Fresh batteries will always show three bars When the indicator shows two bars the voltage of the batteries has started to drop When there is a single blinking bar left you should replace the batteries The meter will turn off automatically when the battery voltage drops too low Alert indicator This indicator is shown next to the battery charge indicator if there is a measurement problem The most likely causes are low battery and probe problems for example Battery voltage too low to power the probe The measured values may show asterisks instead of numbers Probe has been disconnected Probe has been damaged Probe is incompatible Parameter indicator The selected parameter is highlighted by a light frame The symbol on the right stands for all parameters For the list of parameters see section Parameters Explained on page 11 13 Numeric View The Numeric view shows the currently values of the selected humidity parameter and temperature In the all parameters view the font is smaller to fit all values on screen 28 0 5RH 3 7 C 12 9 C 5 87 gin 4 97 qikg 35 12 kJ kg Statistics View The Statistics view shows the current value of the selected parameter as well as the maximum average and minimum value since the measurement was started There is also a counter that shows how long the measurement
5. a humidity reference for example the Vaisala Humidity Calibrator HMK15 or send the probe to a Vaisala Service Center for calibration See the back cover of this manual for contact information If the calibration shows that the measurement accuracy is no longer within specification the probe must be adjusted If accuracy cannot be restored with adjustment the probe must be replaced All probes that are ordered from Vaisala are delivered calibrated See section Accessories and Parts on page 40 If you think the meter is not measuring humidity or temperature correctly calibration and adjustment is not the first thing to do Try the following first Make sure nothing is interfering with the measurement heat sources temperature differences or condensation Check that there is no moisture on the probe If the sensor has become wet you must allow it to dry before you can measure Always wait for the measurement to stabilize For an introduction to calibration order or download the free calibration book from Vaisala at the following address wwwvaisala com calibrationbook 35 Calibrating the HM40 Using HMK15 The HMK15 Humidity calibrator allows you to produce known humidity environments using saturated salt solutions Performing a good calibration takes some time and preparation Read the HMK15 User s Guide before performing your first calibration with the HMK15 Main menu 1 Press the Menu button and
6. save the calibration in the probe RH1 10 856211 30 Check the applied corrections in RH2 74 72 2 75 5 the confirmation screen and press Difference 64 20 RH the Apply button To exit without applying the correction press the Cancel button Apply Cancel 39 Accessories and Parts Description HMP113 probe for HM40 HM40 handle and cable Plastic nut for HMP113 attachment NiMH rechargeable batteries 4 pcs External battery recharger with USB connection and 2 batteries Case for HM40 indicator and probe Plastic grid filter for HMP113 probe Plastic grid with membrane filter for HMP113 probe Belt clip 3 pcs Battery cover 3 pcs Order code See Vaisala order form HM4O HM40HANDLE DRW238590SP 229247SP 229249SP 235849SP DRW236214SP 230727SP 227710SP 225688SP See the HM40 order form when ordering a probe for HM40 You cannot use any HMP113 probe since the probe must have the correct software configuration 40 Filters Vaisala offers two types of filters for the HMP113 probe Plastic grid filter is the standard choice It provides the fastest response time as air can flow freely around the sensors Plastic grid with membrane filter has a membrane under the plastic grid O 2 um pore size for additional protection against contaminants It slows down the response time of the probe For instructions on how to replace the filter on the HMP113 probe see section Changing the Filter on
7. Point count 2 3 Point 4 10 56 gt 11 30 4 Point 2 5 Note VAISA 6 Apply Mark pt RH2 set the reference value for the measured calibration point 74 72 RH RH RH v Cancel Calibration nU LU Lande 1 Quantity RH RH 2 Point count 2 3 Point 1 10 56 gt 11 30 4 Point 2 74 72 75 50 5 Note VAISA 6 Apply 38 The correction to the measurement at point 1 is now shown in the text for menu item 3 If you are only doing a 1 point calibration skip to step 8 Place the probe in the second reference environment second calibration point Wait 20 40 minutes for the reading to stabilize Select menu item 4 Point 2 and press the Set button The meter now shows the currently measured value of the selected parameter Set the reference value using the arrow buttons and press the OK button The correction to the measurement at point 2 is now shown in the text for the menu item 4 Calibration text 8 Select menu item 5 Note to edit Ale CDEFGHIJKL the calibration info text that is MNMOPGRSTUMV CZ stored in the probe Edit the text v 2701234587832 using the select button and arrow m ue MET keys When done select the OK 24355 1 10492 character in the bottom right corner to save the changed text VAISALASHEL To exit without saving press the Select Cancel Cancel button Confirmation 9 Select menu item 6 Apply to Type RH 2 points 4 RH
8. User s Guide www vaisala com Vaisala HUMICAP Hand Held Humidity and Temperature Meter HM40 VAISALA Table of Contents First StartUp cmoa da 3 Miral SANS nen EN TD 3 ao 4 The Mao Meter Frontal edo 5 The AMO Meter Bacon edo es 6 AMIO WI Hana a le N 7 Datbetles ox pa aet A 9 Ap O TENE 10 Parameters Exp laine de sine eh b alud 11 Measures 12 Screen Layout and Control uni tas 12 HACIO poe 15 INANE LIS VIEW AUR 14 Sle EIS CICS VVC DCUM 15 AI a E N 16 Hold and sa 18 Mal MENU tr 20 Tagged POMEUS siria linia 21 Graph IUCR OUD agiia oix nos tende eset REA ANA 22 SOLOS repni ea a a A R 22 amp illeg ire me TEN 23 lianas 23 Settings DIM CO cesado ette cons aia 24 E MAA E NT 24 a dad Rice Racca erated assent ln Oe 25 u 2b fT 25 misc T eames 27 mise doa C n HEU 27 miii OP MM 28 Navia ato aa 28 PROUIMCUINO TEES 28 Factory Secundaria 29 HOW tO Mea USO ocre dada 30 ME LE mM 32 CEANA RET 32 Changing the Fiber ETT 33 Changing the Prope caret casi detinet Rite eta cerno ie en 34 Bee gd og peru en ere Murer eee emer ee dioe ted te Seen apa caute 5 Calibrating the HM40 Using HMK15 es 36 Accessories anq Pat Suet eras e earlier asasiuanab aula 40 A omnee eh te lela ed otal Re tcc he drip T 41 Chargers and Batteries austin 41 Belt Clips and Battery Covers eemHee 41 le ple Data e e BO N 42 at ge a al ek eae tia al EM
9. ce General Power up time Batteries Calculated parameters Menu languages Display Operation time Operation temperature range Storage temperature range Electromagnetic compatibility EMC 250g 330 g PC ABS blend acrylic display lens PC ABS blend grey PC ABS blend white PC glass reinforced IP54 0 4 m with probe attached 1 0 m without the probe lt 3S 2X AA sized 1 5 V Td Tw a x h English German French Finnish Spanish Swedish Chinese simplified Russian Japanese Portuguese LCD 140 x 160 pixels typical 100 hours without backlight 10 60 C 14 140 F 30 70 C 22 158 F European Union directive EN61326 1 for portable equipment 43 Dimensions with Standard Probe 72 012 155 44 Dimensions with Handle 45 Legal notice Vaisala 2012 No part of this manual may be reproduced published or publicly displayed in any form or by any means electronic or mechanical including photocopying nor may its contents be modified translated adapted sold or disclosed to a third party without prior written permission of the copyright holder Translated manuals and translated portions of multilingual documents are based on the original English versions In ambiguous cases the English versions are applicable not the translations The contents of this manual are subject to change withou
10. e and returns to the Settings menu After setting the date set the desired date format using the Formatting option in the Time amp Date menu In the Time setup screen you can set the current time Arrow buttons change the selected value Left function button selects the next value hours minutes or seconds OK button stores the time and returns to the Settings menu After setting the time select 24h or 12h clock using the Formatting option in the Time amp Date menu Pressure Pressure setup Set the current ambient pressure a 1 0132 v Y Cancel Backlight Settings Language English en Units Time amp Date Pressure 1013 3 hPa Backlight Delay 30 3 Battery Alkaline Change Back In the Pressure setup screen you can set the current ambient pressure The pressure information is used when calculating certain humidity parameters such as mixing ratio symbol x If the ambient pressure differs significantly from the default setting of 1 0132 bar due to high altitude for example set the correct pressure value so that the HM40 meter can calculate the measurement correctly Always on Screen is always lit This option will shorten the battery life significantly Always off Screen is always unlit This option provides the best battery life Delay 30s Backlight will automatically turn on when the user presses any button The backlight will turn off after 30
11. ee section Calibration on page 35 Opens a menu with help topics on measurement calibration and the measured parameters The help menu also includes a device information screen where you can view technical information about your HM40 indicator and the HMP113 probe 23 Settings Submenu Language _ Language In the Language screen you can change the display language of the meter The choices are English en German de French fr Finnish fi Spanish es Swedish sv Chinese zh Russian ru Japanese jp Portuguese pt 24 Units Units Units metric Pressure unit Change Time amp Date Time amp Date Date 2010 11 06 Formatting Iso Time 16 56 09 Formatting 24h The Units setting determines the measurement system that is used for the parameters metric or non metric Metric Non metric The Pressure unit is set separately hPa bar atm PSI In the Time amp Date menu you can set the current date and time and their presentation formats Both date and time have their own pre set formatting options 25 Date setup Set year 4144 09 11 Month Time setup Set hour 24h 5 57 05 EL uni 26 In the Date setup screen you can set the current date Arrow buttons change the selected value Left function button selects the next value year month or day OK button stores the dat
12. has been running The icons are T Maximum Average X Minimum Measurement time TELEFE Ea The counter for measurement time 3 F is not shown in the all parameters 2463 2173 2184 view 80 42 31 25 3267 56RH 8 57 397 455 C 1223 12 38 12 55 C 5829 5993 6 242 qm 4809 5 048 5 259 gkg 8438 3477 8524 klky 15 Graph View The Graph view shows a continuously updating graph of the selected parameter and temperature The graph limits and spacing adjust dynamically to show the full range of measurements Current values Vertical spacing of the grid Graph maximum Graph minimum HM40 has no permanent memory for graph data when you turn the meter turned off the graphs are cleared Only tagged points are stored in permanent memory Main menu Tagged points Graph duration auto Settings Calibration Change RH Td Tu a x his All graphs do not fit on the zcreen at the same time You can change the timescale of the graph in the Main menu By default the graph will automatically change the timescale to fit the measured data If you select a short timescale only the most recent data will be visible The graph view is not available in the all parameters view Select a single parameter to show the graph 17 Hold and Tag If you press the right function button CHold button ina measurement view two things happen The measurement view freezes until you press t
13. he Release button The latest measurement point is tagged marked and stored in permanent memory See section Tagged Points on page 21 Tagged points are shown in the graph view as small dots below the graphs Point tagged RH 26 15 XRH T 21 50 C Previously New tagged tagged point point 10m00 5m 212 15m00 Release Tagged points You can view the measurement values at the tagged points in the menu You can also view and delete tagged points from memory in the menu options See Tagged Points on page 21 13 12 2011 11 30 47 When the screen is held the top of the display displays the current date and time This is useful when you want to record the current data take a photograph or write it down If time has not been set the top of the screen will simply read HOLD Helease When the view is held you can reset all measurement data by pressing the Reset button This will clear all graphs and tagged points If you keep pressing the right function button long press the meter will tag the point without freezing the screen Main Menu You can open the menu from the measurement view at any time by pressing the menu button If you are already in the menu pressing the menu button returns you to the measurement view If you are ina submenu the menu button returns you to the previous menu level Main menu Use the arrow buttons to move up Tagged points oe a
14. nd down in the menu and function buttons to operate the menu Options Typical functions in the settings B menus are Calibration Graph duration auto View and Enter open the selected menu option or submenu Change and Set change the Enter value of the selected option Back returns to the previous menu view Exit closes the menu and returns to the measurement view Some menu screens have more content than can be visible at one time This is indicated by a scroll bar that appears on the right side of the screen Use the arrow buttons to scroll up and down 20 Tagged Points Main menu Tagged points TE Graph duration auto Settings ie Calibration Tagged points ime RH RH T C Point 3 7 3 3 1 2011 2 41 46 0 01 02 ago 61030024 T 23 0 C RH 38 0 RH Td 79 C 14 4 C 7 84 qm 6 65 gikg 40 18 kJikg Delete Select Tagged points in the main menu to see the list of stored points and values Time and temperature value are always shown for each tagged point The humidity parameter that is shown is the same as you have selected in the measurement view If all parameters view has been selected RH is shown instead The data stored for each tagged point includes Time when the point was tagged Serial number of the probe that was used useful for identifying the point Measured value of each parameter Press the Delete button to delete the point
15. plosion and or fire Parameters Explained The table below describes the parameters measured by the HM40 All of the parameters are measured or calculated when the meter is on independent of what is currently displayed Relative humidity TF Wet bulb temperature Ratio of the partial pressure of water vapor in the air to the saturation vapor pressure of air at the current temperature Temperature at which the water vapor in the air will condense into water at the current pressure When the dewpoint is below O C the meter outputs frostpoint instead of dewpoint The minimum temperature that can be reached by evaporative cooling in the current conditions Absolute g m Quantity of water in a cubic humidity gr ft meter or cubic foot of air Mixing ratio x g kg Ratio of water vapor mass per gr Ib kilogram or pound of dry air Enthalpy h kJ kg Sum of the internal energy of a btu ll thermodynamic system Temperature T E Temperature in Celsius or F Fahrenheit scale 11 Measurement Views Screen Layout and Controls Alert indicator Current quantity Battery indicator RH 36 RH Measurement display area Current view Change Long press view tag point Short press tag oint and hola screen Enter menu Change quantity Long press power on of Short press activate backlight Pressing the right function button holds the screen and tags the current measurement point See Hold and
16. seconds of inactivity Dimmed Screen is always lit with a dim backlight 27 Battery Use the Battery setting to tell the meter what kind of batteries are installed This will help to scale the battery indicator correctly The options are Alkaline Rechargeable Navigation Navigation setting affects the behavior of arrow buttons in the measurement view Normal Up arrow moves parameter selector left down arrow moves it right Inverted Reverses the direction Rounding Rounding setting affects the number of decimal places that are used to show the measurements On Measured values are rounded to one decimal place Off Measured values are shown with two decimal places 28 Factory Settings Restore settings HM40 settings will be reset ta the default values Probe calibration will nat be affected Do vou want to continue The Factory settings option restores all settings to their default values Probe calibration is not affected 29 How to Measure Remove the Transport Protection Cap Remove the yellow transport protection cap from the probe when taking the meter into use Measure in a Stable Environment If the measurement conditions are changing you cannot get a reliable measurement result Do not measure near heat sources air conditioning open doors or windows For best results leave the meter on in the measurement area and come back to check it later Avoid Tempera
17. select Tagged points the Calibration submenu Graph duration auto Calibralion Calibration 2 Select the parameter to be How to Calibrate calibrated at menu item 1 1 Quantity RH RH Quantity You can calibrate ui ide Temperature T or Relative 2 Point count Humidity RH measurement All 3 Point 1 other humidity parameters are calculated from RH and T so they will also be adjusted 5 Note VAISA fel AA PE Change 36 Calibration 3 Select the number of calibration How to Calibrate points at menu item 2 Points You can perform a 1 point or 2 point calibration 1 Quantity RH RH 2 Point count 3 Point 1 For 2 point calibration you need 4 Point 2 E two reference environments For e example LiCl and NaCl salt g MN hino chambers provide 1196 and 7596 Change relative humidity references 4 Remove the filter from the probe and place the probe in the first reference environment first calibration point Take care not to damage the sensors Wait 20 40 minutes for the reading to stabilize Mark pt RH1 5 Select menu item 3 Point 1 and Set the reference value for press the Set button The meter the measured calibration now shows the currently point measured value of the selected 10 86 3E RH parameter Set the reference value using the arrow buttons and press ih RHI 1 d 30 RH the OK button Cancel 37 Calibration FILTER LU Lande 1 Quantity RH RH 2
18. t prior notice This manual does not create any legally binding obligations for Vaisala towards customers or end users All legally binding obligations and agreements are included exclusively in the applicable supply contract or the General Conditions of Sale and General Conditions of Service of Vaisala Warranty For warranty information visit our Internet pages at www vaisala com warranty Technical Support For technical questions contact the Vaisala technical support by e mail helodesk vaisala com For contact information of Vaisala Service Centers see www vaisala com servicecenters
19. ted inside the filter Any touching or blowing with pressurized air may damage it If the measurement accuracy cannot be restored by calibration and adjustment it is time to replace the HMP113 probe 32 Changing the Filter 4 Turn the filter counter clockwise to open it Turn the filter until it can be removed Pull the filter out straight Do not touch the sensors with the filter Install the new filter and tighten it 33 Changing the Probe Changing the probe is tool free and is done in the same way for the standard probe attached to the meter itself and when using the HM4O handle 1 Press the power button to turn off the meter Turn the probe holder the grey nut at the base of the probe counter clockwise to loosen the probe Pull the probe holder and probe together away from the connector If the new probe does not have a probe holder remove it from the old probe by pulling it over the filter and place it on the new probe Push the pins of the new probe in the holes of the connector Tighten the probe holder Press the power button to turn on the meter If the alert indicator comes on after starting the meter check the connection and verify that the probe has been ordered as a spare part for the HM40 34 Calibration The humidity measurement accuracy of the HMP113 probe should be checked once a year You can do this yourself using
20. that is currently shown To delete all points in memory hold down the Delete button 21 HM40 can store up to 40 tagged points If a new tagged point is stored when the memory is full the oldest tagged point is silently deleted to make room for the new point Graph Duration Graph duration Settings Settings Language English en Units Time amp Date Pressure 1 01 32 bar Backlight Delay 30 2 Battery Alkaline Choose Back 22 In the Graph duration screen you can select the timescale of the Graph view The shortest selectable timescale is 1 5 minutes the longest 32 hours You can also select Autoscale which means that the timescale will automatically adjust to show all of the measurement data in memory up to the maximum of 32h Opens the Settings menu The menu options are described in section Settings Submenu on page 24 Calibration Calibration How to Calibrate 1 Quantity FH RH 2 Point count 3 Point 1 5 Note fel AA PE Change Help How to Measure How to Calibrate RH Rel humidity Td Dewpoint Tw Wet bulb a Abs humidity Mili mbi Device information Battery voltage 3 028 V PROBE Probe type HMP113 Serial number HO440027 NASA In the Calibration submenu you can perform an adjustment procedure that corrects the humidity and temperature measurement of the meter For more information and the adjustment procedure s
21. tteries must be of the same type Observe instructions storage and operation instructions of the battery manufacturer Alkaline batteries are the standard choice in non rechargeable batteries They are a good match for the power requirements of the HM40 Lithium batteries are a good choice if you need the longest battery life or best capacity in low temperatures Lithium batteries are not rechargeable Do not confuse them with lithium ion batteries which cannot be used in the HMAO NIMH batteries are rechargeable and available from Vaisala as an option For order codes see section Accessories and Parts on page 40 Instructions for using the optional USB charger are provided in section Charging on page 1O Charging The optional USB charger provides a convenient way to charge two NiMH batteries from any powered USB port for example from a laptop computer 1 Place the rechargeable batteries in the charger and plug it into a USB port The blue LED on top of the charger starts to blink 2 When the LED stops blinking and stays on the batteries are charged The charging time is several hours for two fully discharged NiMH batteries If you are not using a Vaisala supplied charger and rechargeable batteries read and follow the manufacturer s own charging instructions Do not attempt to charge non rechargeable alkaline or lithium batteries Doing so leads to a risk of battery leakage equipment damage and risk of ex
22. ture Differences Temperature differences are a typical cause of error in humidity measurement and calibration You must let the meter stabilize long enough temperature differences level out very slowly Switch to the Graph view and wait until the graphs level out indicating that the measurement is now stable 30 Avoid Condensation and Rain If the humidity sensor element becomes wet the meter cannot measure until the sensor is dry again Avoid rain and conditions where condensation can form on the sensor Do not replace the transport protection cap if the probe or the cap is wet since it will prevent the probe from drying Do not touch the sensor or blow on it to dry it out Calibrate the Meter Regularly It is recommended that you calibrate the HMP113 probe of the HM40 meter once a year or if you have any reason to believe it is no longer within its accuracy specification See section Calibration on page 35 31 Maintenance Cleaning The HM40 can be cleaned by wiping it with a moist cloth If the filter becomes contaminated it is very likely to affect the humidity measurement since residue on the filter will retain some moisture Dirty filters should be replaced Do not use solvents to clean the HM40 Do not spray anything directly on the HM40 since that may deposit impurities on the sensor Do not immerse the HM40 in liquid to clean it Do not attempt to clean the sensor element that is loca
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