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HygroGen2 - Rotronic USA

1. gt button After a succesful run AutoCal saves a time stamped PDF calibration certificate to a USB drive plugged into the HygroGen2 Included in the PDF is the program name set and adjustment points probe serial numbers and relevant calibration reference information It is further possible to upload a custom logo and other user and refference information see section 3 4 6 A separate PDF Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software HygroGen2 Humidity and Temperature Generator Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 170f55 Document title is generated for each probe NB AutoCal will not run unless a USB drive is detected by the HygroGen2 Before selecting a probe for adjustment it is recommended to perform an initial assessment calibration run without adjustment selected At the end of the run examine the PDF calibration certificate saved to the USB drive and determine whether you want to re run the program with adjustment selected For each set point values for temperature and humidity are recorded on the calibration certificate every 2 minutes for the last 10 minutes of the set point At the first adjustment point to be applied AutoCal will initially delete any previously saved calibration points stored on the probe This is recorded on the certificate It will then apply the values of the reference probe as a correc
2. The HygroGen2 controller consists of four top level screens that are accessed using the forward or back buttons in a loop HYGROGEN 23 00 230 Si Figure 5 HygroGen2 Screens NB Programmer Screen Functionality is different when AutoCal functionality is activated Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 10o0f55 Document title 3 3 1 Primary Controller Screen Menu access top left corner HOME Actual chamber temperature Temperature set point Temperature control status indicator Automatic Manual selection Actual chamber humidity Humidity set point Humidity control status indicator Automatic Manual selection Back to previous screen Access programmer function Access HW4 software Power off Forward to next screen E AA AS A k kA k k PUNEO o on A GA RO co Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Humidity and Temperature Generator Instruction Manual for Software Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 110f55 Document title Automatic Manual Mode 23 00 230 Figure 7 Temperature and Humidity Control Both temperature and humidity control can be set to automatic or man
3. Power Off button on screen 2 Select Transit 3 Empty water as prompted on screen 4 Allow the HygroGen2 to shutdown The HygroGen2 will isolate the humidifier and cool dry to ensure excess water is removed This may take several minutes DO NOT switch off at the wall before the HygroGen2 has shut down Failure to do this HygroGen2 will not switch off if the water is not emptied as requested may cause software corruption Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software HygroGen2 Humidity and Temperature Generator Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 24o0f55 Document title 3 8 Preparing the Unit for Transit or Storage Shutdown the HygroGen2 according to the Transit Shutdown Procedure above If the HygroGen2 needs to be shipped always use the original double layer cardboard packaging The HG TB transit bag is suitable for hand carrying only for air or truck shipping supplement the HG TB with a sturdy cardboard box with at least 100 mm of foam or other shock protection surrounding all sides When shipping involves air transportation either remove the chamber door or at least one probe bung to prevent condensing of any residual moisture when exposed to low aircraft hold temperatures Figure 24 HG TB Transit Bag Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction
4. a gentle twist will help removal Changing the desiccant should be undertaken in a ventilated area Observing the diagram below remove the cap and pour out the used desiccant material and replace with new or regenerated material Avoid exposing the replacement desiccant unduly to the atmosphere Ensure that the cell is filled with as much desiccant as possible to ensure there are no air gaps Remember to replace the foam insert that fits between the cell cap and the desiccant before Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software HygroGen2 Humidity and Temperature Generator Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 31o0f55 Document title replacing the cell cap and spring clip Application of silicone grease on the desiccant cell cap O ring will help ease removal and refitting KE w A V e 5a Cell cap a 5b Retaining clip i PE 5c Cell body 42 Figure 29 Desiccant Cell AN Caution Do not use dusty desiccants as the dust may be passed into the chamber Choice of Desiccant The HygroGen2 is supplied from the factory filled with molecular sieve desiccant Molecular sieve is preferred due to its higher performance in all temperature and humidity conditions and is longer lasting and can be regenerated through heating Other desiccants including self indicating silica gel and drierite can be used
5. 3 7 Switching off the HygroGen2 power button It is highly important that these are observed instrument faults There are two Shutdown procedures these are presented after you press the on screen A attributable to incorrect Shutdown are not covered by the warranty Figure 23 Water Level Shut Down In normal circumstances use Shutdown This dries the chamber to prevent residual water and isolates the humidifier from the chamber Once correctly shutdown the HygroGen2 is in a suitable condition for short to medium term periods without use It is also put into a condition where it can be moved carefully in a horizontal position e g on a trolley to a different location say within a building Shutdown Procedure 1 Press Power Off button on screen 2 Select Shut Down 3 Allow the HygroGen2 to shutdown The HygroGen2 will isolate the humidifier and cool dry to ensure excess water is removed This may take several minutes DO NOT switch off at the wall before the HygroGen2 has shutdown DO NOT switch off at the back of the HygroGen2 before it has shutdown Use Transit to shutdown and condition the HygroGen2 if the unit is to be transported or stored for an extended period The HygroGen2 will ask for the unit to be emptied of water It will isolate the humidifier from the chamber and then cool dry the chamber to ensure excess water is removed This process may take several minutes Transit Procedure 1 Press
6. Instruction Manual Page 30o0f55 Document title 7 Servicing and Maintenance 7 1 Control HygroClip Calibration To remove the control HygroClip for calibration turn off the HygroGen2 auto Control and remove the door Reach into the chamber and unscrew the HygroClip from its mounting connector Take care not to cross the threads on the collar when refitting To minimise HygroGen2 downtime alternative calibrated probes can be fitted in place of the existing probe 7 2 Desiccant Desiccant The HygroGen2 uses a desiccant when lowering humidity in the chamber The desiccant condition is shown within the Settings screen This shows an approximate WW indication of the dew point within the dryer cell 80 0 If the HygroGen2 does not reach low RH set points promptly check the desiccant 40 condition and replace as required a The measured desiccant value is established when the dryer is active and a flow of air o from the desiccant cell is passing over the desiccant sensor this value is held when the 20 dryer is active to provide the user with an indication of the desiccant condition even if 40 the dryer is not used To update the value run the HygroGen2 on the lowest RH set ei point 5 rh for at least 15 minutes Figure 28 Desiccant Condition Changing Desiccant Remove the desiccant cell from the HygroGen2 by pulling firmly on the cell cap figure1 5 The cell is held in place securely to maintain an air tight seal
7. Manual for Software HygroGen2 Humidity and Temperature Generator Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 25o0f55 Document title 4 HW4 Embedded HygroGen2 comes with HW4 ROTRONIC device control software on its embedded PC This provides the user with access to HW4 functionality to access ROTRONIC USB devices without the need for a separate PC HW4 features include e Instrument configuration e Data acquisition e Measurement display and graphing e Calibration adjustment HW4 does not work with other manufacturers USB probes 4 1 HW4 Set Up and Getting Started For full functionality HW4 requires an external monitor keyboard and mouse to be connected to the HygroGen2 see section 5 To start HW4 touch the HW4 icon Drag the HW4 window on to the second monitor if available Any ROTRONIC USB probes that are connected to the HygroGen2 s USB ports can be connected to HW4 using the Search for USB Masters command For a full overview of the use and features of HW4 please refer to the full HW4 manual This can be obtained from the Downloads section of www rotronic com 4 2 HW4 Installation and Registration HW4 is preinstalled and activated during HygroGen2 manufacture The unique HW4 serial key number for the machine can be identified via HG Info button on the Settings page of the HygroGen2 please have this information available in the event that you require technical suppor
8. Sek EIERE Ee Eeer 14 3 4 Atoc Optional a vetals asian N lect osid i cewid atnaat a A 15 34L ACUC ala 15 3 4 2 AUtoG a RETCFENCE esr hel a 15 34 3 HAULOGAlSCKOCM i sage theatre ee Ee 15 3 4 4 AutoGal Program EEN 16 3 4 5 AutoCal Operation and Best Practicas osisssa e a ie 16 3 4 6 Customising the PDF Calibration Certificate 18 35 Range Extension LOPOM reena a a ee de 19 3 0 Operation PRECAUTIONS ee eg 19 320 1 Water EC A A iS 19 3 6 2 Below Ambient Temperature Operation 20 3 6 3 Above Ambient Temperature Operation 21 304 Probe INSERTION Depas tients ch hae a slat een aan aa 21 32020 Protect vete A at 21 3 6 6 Low SEHR 21 3 0 7 Water Level Inalcator Elte incaico ici 22 Sl SWITEHING OT EEN 23 3 8 Preparing the Unit for Transit OF Storage serna ici 24 A SWE St EL ET siii 25 AL AWA Set Upana Getinge Started ca EE 25 42 HWA4Installation a a Registration ai 25 A3 AWA SUD POM sai 25 44 AWA Updates ana H ere EE 26 5 Peripherals and Ke d Tu ic 27 5 USB ele Ee e Eiter EE 27 A sn et a ued aotatieautw sud laud htataen e sleet nathanes 27 53 Configuration Mode Setting Sease dd 28 Si CEET 29 Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit HygroGen2 Important notice before first use Table of Contents Document title Al A2 B1 B2 B3 C1 C2 D1 D2 D3 D4 53 2 TouchScreen Cal Te EE 29 HygroGen2 and HW4 Feature Upg
9. Set Point Play stop Starts or stops the program and displays the Run and Step timing information Program Run Time reports how long the current program has been running Step Remaining reports how long the current program step has left to run Current control value and set points are displayed at the bottom of the screen Praga HygroClip Calibration Profile TIeecegue ex ls a a ed Tempe ature cry 01 0 1 Figure 11 Edit Program Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Humidity and Temperature Generator Instruction Manual for Software Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 14o0f55 Document title Defining Programs To define the programs either press click a set point value or the Edit key This opens the Program Edit screen as shown The step point steps are numbered and set point values and step duration can be defined below Steps can also be inserted or deleted as required A graphical representation of the program is shown above each point A title for each program can be entered at the bottom of the screen using an attached USB keyboard Intermediate steps to achieve incremental changes between each set point can be programmed by selecting the green button next to each parameter otherwise the instrument will attempt to reach the set point as quickly as possible For each program
10. and mouse may be plugged in via front or rear USB ports to facilitate operation This is particularly useful for operating the embedded HW4 ROTRONIC device control software 5 2 External Monitor Running the embedded HW4 software on the integrated screen is possible but not practical so an external DVI monitor connection is available on the rear of the HygroGen2 DVI monitors are widely available no special configuration or size is required To configure the DVI monitor use the following procedure 1 Sot Oe Oh ae SY A k kA k WN F O Connect the HygroGen2 to the DVI monitor Plug in USB keyboard and mouse Go to the Settings page on the HygroGen2 Select Monitor Set Up Display Properties appears Click on monitor 2 icon Select Extend my Windows desktop onto this monitor Click on Apply Screen resolution should be adjusted to suit the monitor connected Apply any changes and click OK to exit the Display Properties Click on the HW4 icon HW4 will open on the HygroGen2 screen Using the mouse drag the HW4 window so that it displays on the monitor You can now size the HW4 window to suit the connected monitor Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual l Page 280f55 Document title 5 3 Conf
11. be used at the same time as AutoCal Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 18o0f55 Document title 3 4 6 Customising the PDF Calibration Certificate The PDF certifcate can be customised by selecting Edit Info from the AutoCal screen figure 13 or selecting AutoCal from the Settings menu on the Settings screen It is possible to enter user and company information reference standard information including the last and due calibration dates and to upload a custom logo Edit AuteCal Certificate Please enter the following information if required Company contact information Information on the Reference Callbration Standard Upload company boga F Figure 15 Edit AutoCal Certificate Edit Auto Cal Certificate Contact Information Dperabor Blue Farms Operator Comment Rotronie Instruments UK Ltd Compton Fields Compton Way Cr ayer West Sussex RHLOSEE 44 1293 571000 hygragendrobronic co uk Figure 16 Edit AutoCal Certificate Contact Information To upload a logo save it as a a file logo jpg to the root directory of a USB stick Insert the USB into the HygroGen2 The HygroGen2 will detect the file and display your image Select Upload Logo The logo will be uploaded to the unit and will app
12. function they are now used to determine the adjustment points Probes that are selected for adjustment within the AutoCal screen 3 4 3 will be adjusted at points that are selected here Only one temperature point can be selected and must be selected as the first adjustment point This is because of the way the HygroClip probes work if temperature is adjusted corresponding adjustments for RH are made at the same time This policy is enforced by the software greyed out buttons refer to options that are not possible a dark green button is a point not selected for adjustment and bright green is a point selected for adjustment It is not possible to select different adjustment points for different probes If this is desired please run a new program at a later time Tolerance for set points to be considered stable is set in the same way as for the Standard non AutoCal version section 3 3 3 Points can be set for a minimum duration of 15 minutes please ensure sufficient time is allowed for the probe to stabilise A duration of at least an hour is strongly recommended longer for extremes of temperature or RH The timing of a set point will begin when the chamber is within the set tolerance Take particular care to allow sufficient time to allow for stabilisation of probes with particular filters applied 3 4 5 AutoCal Operation and Best Practices Once the program and adjustment points are determined programs are started by pressing the Play
13. if desired for further information please contact hygrogen rotronic co uk Dusty desiccants should be avoided as particles may be passed into the HygroGen2 chamber Replace or regenerate the desiccant whenever the drying performance of the HygroGen2 is deteriorating Material Safety Sheets for the desiccants supplied by ROTRONIC are available on request Regeneration of Molecular Sieve Desiccant To regenerate molecular sieve remove it from the desiccant cell and heat it at 175 C for 3 5 hours in a dry environment do not use a gas oven After heating allow to cool in a dry or sealed environment Performance of the regenerated desiccant can be measured in the HygroGen2 according to the method described above Alternatively replacement new desiccant can be ordered from ROTRONIC Please contact your local dealer Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 32o0f55 Document title 7 3 HygroGen2 Cleaning Prior to cleaning the unit should be disconnected from the electrical mains supply External surfaces The external surfaces of the HygroGen2 may be cleaned with a lint free cloth dampened with a mild soap solution Care must be taken not to allow fluids into any of the apertures on the unit The fan inlet filter can be cleaned using a
14. stabilisation at each If the unit is operated at high temperature and high humidity for prolonged periods it is strongly recommended that the chamber is thoroughly dehumidified prior to switching the unit off 3 6 4 Probe Insertion Depth When adjusting or calibrating probes against a reference make sure the insertion depth of each instrument is the same for each probe Using the same immersion depth substantially reduces the effect of any temperature and humidity gradients in the chamber The immersion depth of any probe inserted in the HygroGen2 should be within the limits of 100 to 150 mm 4 to 6 measured from the inner side of the door This will reduce the effect of room temperature via stem conduction on the probe 3 6 5 Protective filters Make sure you allow appropriate extra time for probes with particular protective filters These probes require longer time than the HygroGen2 to stabilise The Trend Screen displays the measured values over time 10 minute default on the x axis so the user is able to observe whether the HygroGen2 is stable within the acceptance criteria 3 6 6 Low Water Level Alarm The unit will inform the operator if the water level in the reservoir is too low with a visual Low Water Level prompt on the controller screen This prompt may be dismissed by following the on screen instructions l Water H 3 Low Water level Humidification Disabled o Figure 20 Low Water Level Alarm Figu
15. temperature and humidity stabilisation values can be defined Once the chamber conditions are within this tolerance the step duration timing begins If set to zero no stabilisation criteria are applied and the timing of the step duration begins immediately NB This functionality is only available through the HOME menu when AutoCal feature is activated Please see section 3 4 3 3 4 Settings Screen 1 Water level display Desiccant condition display 3 Settings gt Monitor Setup ei he emm Wi AutoCal Frog 1 Water Level T ME Updates SE SE Se AutoCal ei w Sevice 5 Ze Water Desiccant System o P P Date and time ug 3 Touch Screen 4 Updates gt Update Software Upgrade Features 2 gt BEIvICE Menu gt Figure 12 Setting Screen Service Info See later sections for further details on the operation of these features Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 15o0f55 Document title 3 4 AutoCal optional 3 4 1 Activation To upgrade your HygroGen2 with the AutoCal feature please purchase an activation key via your ROTRONIC dealer Enter the code via the Settings Screen Select Upgrade Features from the Updates drop down menu enter the feature code and press OK With AutoCal activ
16. will improve stability criteria but may influence measurement response time A2 Temperature Control Temperature control within the HygroGen2 is performed by a fast response PT100 thermometer which is continuously referenced against the HygroClip control probe The chamber is not considered stable as indicated by the control indicator being coloured green unless the reported temperature values are within the resolution of the control HygroClip If a replacement HygroClip reference is put into the HygroGen2 and it gives a significantly different temperature reading it may take a while roughly 20 minutes for every 0 1 C discrepancy the first time stability control is engaged as the self adjustment algorithm runs Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software HygroGen2 humidity and temperature generator Version 2 0 x Instruction Manual Appendix Page 39o0f55 Document title B1 HygroGen2 Screen Messages On Screen Message Fault Action HygroClip NC HygroClip not connected or faulty Check and replace as required Contact service centre if message persists HygroClip error Temperature or RH values are incorrect within the HygroGen2 s programming Remove Probe and check values Replace if found to be faulty Contact service centre if message persists HC null data HygroClip communication invalid data output Check HygroClip and replace Contact serv
17. 0 0 560 Figure 35 HygroGen Information Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 humidity and temperature generator Instruction Manual Appendix Page 44of55 Document title C2 Manufacturer amp Service Centre Contact Information Manufacturer UK Service Centre Rotronic Instruments UK Ltd Crompton Fields Crompton Way Crawley RH10 9EE United Kingdom Phone 44 0 1293 571000 Fax 44 0 1293 571008 www rotronic co uk instruments rotronic co uk Germany Service Centre Rotronic Messgerate GmbH Einsteinstrasse 17 23 76275 Ettlingen Deutschland info rotronic de www rotronic de Phone 49 7243 383 250 Fax 49 7243 383 260 Switzerland Service Centre Rotronic AG Grindelstrasse 6 CH 8303 Bassersdorf Switzerland Phone 41 1 838 1144 Fax 41 1 837 0073 www rotronic ch humidity rotronic ch France Service Centre Rotronic sarl 56 bd de Courcerin F 77183 Croissy Beaubourg France humidite rotronic fr www rotronic fr Phone 33 160 95 07 10 Fax 33 160 17 12 56 USA Service Centre Rotronic Instrument Corp Suite 150 135 Engineers Road Hauppauge NY 11788 USA Phone 1 631 427 38 98 Fax 1 631 427 39 02 sales rotronic sa com www rotronic usa com China Service Centre Rotronic Shanghai Representative Office 2B Zao Fong Universe Building No 1800 Zhong Shan Wes
18. 0 1 00 0 100 Sum of squares Standard uncertainty vsum of squares Expanded uncertainty 95 confidence Squares 0 096 0 010 0 001 0 000 0 024 0 001 0 001 0 003 0 003 0 010 0 15 0 385 0 77 D4 Dew Point Uncertainty Analysis Reference 1 O On LP BW N Uncertainty source Calibration of Standard Drift of Standard Repeatability Mirror Contamination Mirror Temperature Fluctuations Temp Gradients Across the Mirror Condensate Standard Deviation of Readings Dew Point Temperature Distribution normal rectangular normal rectangular rectangular rectangular normal Value 0 1 0 1 0 05 0 05 0 05 0 01 0 01 5t0 35 Cdp Units Sensitivity Equiv Cdp Divisor One SD Cdp 1 0 10 2 00 Cdp 1 0 10 1 73 Cdp 1 0 05 1 00 Cdp 1 0 05 1 73 Cdp 1 0 05 1 73 Cdp 1 0 01 1 73 Cdp 1 0 01 1 00 Sum of squares Standard uncertainty vsum of squares Expanded uncertainty 95 confidence 0 050 0 058 0 050 0 029 0 029 0 006 0 010 Squares 0 00250 0 00333 0 00250 0 00083 0 00083 0 00003 0 00010 0 01 0 101 0 20
19. 2 FILL Water fill syringe with tube e HC2 S HygroClip control probe pre installed with calibration certificate e Sample Loop connector cover plugs e This Manual e Chamber door according to customer s order e HW4 software ID number e USB memory stick including saved test data and user manual The calibration certificate included will vary according to the country of supply In some countries the chamber door is delivered with the HygroGen2 Due to the diversity of chamber doors and bungs these are normally ordered separately and may be delivered in separate packaging Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Important notice before first use Table of Contents Document title 1 Scope OT Re in TE EE EE 1 TA ntroducine the a ET EE 1 1 2 AutoCal and Range Extension Options ooocccccnnccnncnnncnnnonaconnnnnnonnnonaronnonaronnonnnrnnnonaronnonanonnos 1 1 3 Temperature and Humidity ReTeren Ces iii A A Sided Races deere 2 2 Setting up the HygroGen2 cisne EE EN 3 21 Physical EENEG 3 22 BIC CURICA EE ee 3 23 IAVEVOGENZ Eu Le EE 4 24 EE E e EE E 5 3 HyeroGenz Operation asias ls 8 SN WS el e ON an tii 8 32 Upgrading From Previous Versions ii e Eed 8 3 3 HysroGen2 Touchscreen Interface nit EE 9 3 321 Primary Controller SCreen iii A OA owe 10 3 3 2 Trend AN ah eh eae ee tae 12 3 3 3 Programmer Function Screen iin cides Macneil ias 12
20. Electrical mains connection 9 Power switch Figure 2 Rear of HygroGen2 Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Humidity and Temperature Generator Instruction Manual for Software Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 5o0f55 Document title HygroGen2 Chamber and Door The HygroGen2 does not come supplied with a door There are various standard and customized versions available depending on the intended use for the instrument the use of an external reference see Appendix A1 2 and the instruments under test Figure 1 6 shows the 30mm 5 port version part code HG2 D 8888 Other options are listed in Appendix B3 To access the HygroGen2 chamber remove the door Grip firmly and twist the door anti clockwise In the event that this proves difficult cool the chamber first see later sections Occasional application of silicone grease around the door O ring seal will ease movement Replacement can be in any position and requires only a gentle clockwise twist Before using your HygroGen2 make sure that the door is secured and that all probe apertures that are not in use are sealed with a bung Figure 1 7 or appropriate alternative seal Desiccant Cell The unit should be supplied with the desiccant cell Figure 1 5 in place For further details and best practice for desiccant handling please see section 7 2 Externa
21. Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Document title Instruction Manual Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Important notice before first use Advisory Notice Document title HYGROGEN HygroGen2 IMPORTANT NOTICE BEFORE FIRST USE Congratulations on purchasing the HygroGen2 humidity and temperature generator To get the most out of your instrument and ensure accurate and rapid humidity and temperature calibrations over many years please familiarize yourself and adhere to the best practices and procedures as detailed in this manual Please carefully remove the HygroGen2 from the packaging and visually inspect for any signs of damage Check the contents against the list on page iv Contents of the Standard Supply Package Report any damage or missing parts immediately to your supplier Please note the following important information DO NOT transport the HygroGen2 without first emptying the water reservoir The HygroGen2 is designed to be portable but it is vitally important to empty the water reservoir using the HGFill syringe before transporting it The full procedure is described in section 2 4 Failure to do this will damage the instrument Follow correct Shutdown Procedu
22. Software and HW4 V3 x upgrade USB stick HG2 AutoCal Code HG2 AutoCal function licence code only HG2 TempExt Code HG2 Temperature Extension 5 60 C licence code only HG2 HumiExt Code HG2 Humidity Extension 2 99 RH licence code only HG2 AutoC RangeE C HG2 AutoCal and Range Extension T RH bundle licence code only Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 humidity and temperature generator Instruction Manual Appendix Page 42of55 Document title xx probe diameter codes pf notsed S O 15mm HygroClip R Li mm S a T H um V 20mmcablegland wo 32mmeablegland X motused S Y 15 mmangled Vaisala HMD _ Cable gland to accept 9 17mm diameter probes Z notused 23mm General Eastern 32mm Chilled Mirror probe O 16 mm A7 19 75mm no O rings A8 A L Cable gland to accept 3 7mm diameter probes N 6 35mm 1 4 inch not used E ES 2 E ES E EN E EN EN ES i E BE ER H ES 3 K t M N ER KS Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 humidity and temperature generator Instruction Manual Appendix Page 43o0f55 Document title C1 HygroGen2 Warranty Statement ROTRONIC will grant a warranty for the HygroGen2 for a period of 12 months from the date of delivery in re
23. Uncertainty Framework Chilled Mirror Reference Temperature sensitivity Reference Uncertainty source Distribution 1 Uncertainty of chilled mirror reference normal 2 Repeatability of humidity normal 3 Chamber temperature gradients rectangular 4 Temperature stabilisation rectangular 5 Repeatability of temperature normal 6 Humidity stabilisation rectangular 7 Humidity fluctuations rectangular 8 Instrument under test IUT resolution rectangular 9 Standard deviation of Ref readings normal 10 Standard deviation of IUT readings normal Reference 1 See sheet Dew Point UA 2 From Standard Deviation of 10 repeated calibration runs 3 Measured temperature gradients from the ROTRONIC HygroGen2 Service 4 Measured stability from the ROTRONIC HygroGen2 Service 5 From Standard Deviation of 10 repeated calibration runs 6 Resolution of ROTRONIC HygroGen2 Control Clip 7 Resolution of ROTRONIC HygroGen2 Control Clip 8 Resolution from manufacturer s specification 9 Standard Deviation of Ref readings during calibration 10 Standard Deviation of lUT readings during calibration Value HA lt RH deg C 3 1 Units mm nn Sensitivity Equiv RH Divisor One SD 3 100000 0 620000 2 00 0 310 1 000000 0 100000 1 00 0 100 3 100000 0 062000 1 73 0 036 3 100000 0 015500 1 73 0 009 3 100000 0 155000 1 00 0 155 1 000000 0 050000 1 73 0 029 1 000000 0 050000 1 73 0 029 1 000000 0 050000 1 00 0 050 1 000000 0 050000 1 00 0 050 1 000000 0 10000
24. ated the top level Programmer Function Screen is replaced by the AutoCal screen below The standard Programmer functionality is still available via the drop down menu in the top left hand corner of the screen 3 4 2 AutoCal Reference AutoCal uses the internal control HygroClip as the reference External references are not supported For a more in depth discussion on references and calibration traceability please see Appendices A1 and A2 3 4 3 AutoCal Screen As ROTRONIC probes are added via the USB ports the individual probe slots are populated within the AutoCal Screen During an AutoCal calibration run probes can be adjusted or not as desired for each probe Select individual probes by selecting the Adjust button once C25 153 16 34 53 34 orate 33 05 93 a Jas Los Info 5 een ces Beta Detais l lt Program 1 ACal Profile 1 lt lt gt gt Figure 13 AutoCal Screen Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Humidity and Temperature Generator Instruction Manual for Software Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 16o0f55 Document title 3 4 4 AutoCal Program Edit Pressing the Edit button calls up the AutoCal Program Edit screen Figure 14 AutoCal Program Edit Screen Set points are programmed in an identical way to the standard Programmer However the green buttons take on a different
25. bought at the same time and included with the same activation code as AutoCal or it can be purchased separately Activate the feature code in the same manner as AutoCal section 3 4 1 Range extension allows the unit to operate down to 5 C and 2 rh and up to 99 rh between 10 C and 45 C The unit is able to reach 90 rh above 45 C and below 10 C Please be aware that it may take a long time to reach set points at these extremes of temperature and humidity and the unit may need to be individually adjusted to optimise performance Expert knowledge of PID parameters is required to do this Access is via the Service Menu which is locked down for standard operation For further information please contact hygrogen rotronic co uk The unit can be configured to produce conditions lower than 2 rh but the performance and stability of the instrument below this RH is not guaranteed Furthermore the accuracy of the control probe needs to be borne in mind 3 6 Operation Precautions 3 6 1 Water in the Chamber Before using the HygroGen2 check that there is no visible water inside the chamber If the last condition run by the HygroGen2 was at high humidity and the unit not correctly shut down see below condensation may have formed Remove excess water using absorbent tissue and initially run the HygroGen2 at an elevated temperature 40 C and low RH set point to dry the system before calibrations are run Rotronic AG E M HG2 S V2 0 Bassersdorf S
26. date Note The HygroGen2 should always be emptied if it is being shipped or stored see section 3 8 Preparing the Unit for Transit or Storage This will prevent ingress of water into the chamber should the unit be inverted and prevent possible frost damage Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Humidity and Temperature Generator Instruction Manual for Software Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 7of55 Document title Water Quality The HygroGen2 should only be filled with distilled water As a precaution against any microbial and algae water contamination HygroGen2 incorporates an Ultra Violet UV sterilisation lamp within the water reservoir No user intervention is required HygroGen2 auto cycles the process Under no circumstance should the water reservoir be opened by non qualified personnel Direct exposure to UV lamps can cause burns or blindness Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 8of55 Document title 3 HygroGen2 Operation 3 1 Switching On 1 Ensure the electrical mains supply is correctly plugged in and switched on Switch the unit on by pressing the Power Switch see figure 1 1 once 3 The fans wit
27. dix l Page 41o0f55 Document title B3 HygroGen2 Order Codes Order code Description HygroGen2 with touch screen user interface set point control and programmer function heated sample loop 1x desiccant cell 1x fill syringe embedded HW4 P software Order chamber door separately Doors amp Fittings HG2 door 5 x 15mm ports for 5 HygroClip2 S with 5 bungs order specific B1 sleeves for smaller probe diameters HG2 door 5 x 30mm ports with 5 bungs order specific B8 sleeves to suit smaller probe diameters HygroGen2 probe door for HF3 amp HF4 wall mount transmitters HG2 clear acrylic door no ports for instruments with displays HG2 fully custom door for gt 30mm see xx diameter codes below 15mm Bung B1 probe sleeves 15mm external internal probe diameter see xx codes below 30mm Bung B8 probe sleeve 30mm external internal probe diameter see xx codes below HG2 D 11111 HG2 D 88888 HG2 DP 00000 HG2 B1 HG2 B1 xx HG2 B8 HG2 B8 xx HG2 DC HG2 FILL Additional desiccant cell pre filled with molecular sieve Fill tube and syringe Molecular sieve desiccant 3kg Accessories Transit bag lightweight HygroClip2 calibration cable 50cm USB HygroClip2 calibration cable 50cm USB Bundle of 5 pieces HG2 AC3001 L 050 Mini USB transfer cable 30cm with 90 coupling for transmitters with fixed probe HG2 TB HG2 AC3001 L 050 HG2 AC3001 L 050 5 AC3015 Extended Features HG2 V2 X UPGRADE HG2 V2 x
28. e Configuration page Date and Time Properties x er e Figure 27 Date and Time Properties 5 3 2 Touch Screen Calibration Pressing the touch screen button will begin a four point calibration Press the cross in each corner of the screen as directed 6 HygroGen2 and HW4 Feature Upgrades and Software Updates Feature upgrades and updates for HygroGen2 and HW4 software can be ordered from your ROTRONIC dealer and are applied via a USB memory stick inserted into the rear USB ports of the HygroGen2 Applying HygroGen2 and HW4 updates requires the unit to reboot into update configuration mode section 5 3 Select the Update option from the Settings screen and press OK to reboot After the restart insert the USB memory stick containing the update and select the upgrade option required Once the selection is made the HygroGen2 will load the software and run through file structure diagnostics before restarting The diagnostics can take up to 15 minutes under no circumstances switch off the HygroGen2 during this process Once complete the HygroGen2 will automatically restart and return the unit to its normal operational state For feature upgrades a screen will appear requesting the appropriate activation code Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Humidity and Temperature Generator Instruction Manual for Software Version 2 0 x with AutoCal and Range Extension options
29. ear automatically sized and positioned on the PDF certificate below the Rotronic HygroGen logo Upload Logo To upload a company logo to appear on the AutoCal certificate Loge file must be jpeg format File must be called Togo Jpg Copy the loge file to a USB stick Ge z P vert The logo file must on not be in a folder or directory Reve Hew Loge che Figure 17 Upload Logo Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 19o0f55 Document title Information about the calibration of the reference probe itself can be entered by pressing Ref Std Edit AuteCal Reference Standard Information Reference Calibration Standard Sonal o 40950854 Current Date vrre d4 00 2012 10 01 Last Calibration errv miboJ No Date Entered Catibration Due Geeee Mu fot No Date Entered Comment on Referente Figure 18 Edit AutoCal Standard Information When an AutoCal run is started the user is warned should the reference calibration be out of date and prompted to update the reference information should the reference probe have been swapped out The user is further asked to confirm that the operator name to be printed on the certificate does not require changing 3 5 Range Extension optional Range Extension can be
30. er expertise to ensure the best possible results Always follow the chilled mirror manufacturer s best practice recommendations and check the instruments compatibility with the HygroGen2 operating specifications Practical Guidance Chilled Mirror Reference Depending on the conditions being measured some chilled mirrors do require a longer time to stabilise sometimes up to 90 minutes Attention should be paid to the following e some types of chilled mirror sensors have the tendency to over or under shoot to hunt and can be off the mark for quite a long period of time e at values below freezing the indications of chilled mirror instruments without a force frost feature can be ambiguous readings may correspond to either the dew point or the frost point e whenever measuring conditions result in a dew point that is higher than the laboratory conditions heat the entire external sample loop including the sensor head Heating is required to avoid condensation For advice on choosing the most appropriate chilled mirror instrument please consult your ROTRONIC dealer Chilled mirror probes Chilled mirror probes of diameters up to 50mm can be directly fitted through the HygroGen2 door Depending on the diameter of the probe a special adapter or custom HygroGen2 door may be required please contact your ROTRONIC dealer for guidance Chilled mirror probes are convenient for dew point ranges above ambient as they are immersed in t
31. ess tubing should be used to connect the sample loop out and return ports to the chilled mirror unit If the mirror instrument does not have a built in pump flow meter and regulator we recommend including these in the sample loop after the mirror to confirm the air flow rate required by the chilled mirror instrument typically 0 51 min 2012 Rotronic AG E M HG2 S V 2 0 Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 humidity and temperature generator Instruction Manual Appendix Page 380f55 Document title Caution When tightening or releasing the Swagelok connectors do not apply torque to the MA nut caps without using a spanner on the connector body to counteract it Finger tighten and then apply a quarter turn with a spanner Replace the blanking caps when not using the sample loop Figure 34 HygroGen2 Chilled Mirror Set If the chilled mirror instrument is being used in conjunction with a thermometer in order to calculate relative humidity the temperature probe should be positioned in the chamber Care should be taken to ensure that insertion depth and stem conduction effects do not induce measurement errors A typical HygroGen2 Chilled Mirror set up is shown note the heated sample lines to the rear Set the flow rate through the sample loop according the mirror instrument manufacturer s specifications A lower flow rate
32. etails of which can be found in Appendix C2 of this manual Under no circumstance should the unit be opened by personnel unauthorised by the manufacturer Doing so will void the manufacturer s warranty and expose potentially dangerous electrical hazards Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software HygroGen2 humidity and temperature generator Version 2 0 x Instruction Manual Appendix Page 34o0f55 Document title A1 Calibration Reference Options Various calibration references can be used with the HygroGen2 These include the internal control probe other RH probes dew point chilled mirrors and platinum resistance thermometers PRTSs For traceable calibration these references are themselves calibrated by accredited laboratories traceable to national standards For more information please refer to The Guide to Uncertainty of Measurements GUM published by the UK National Physical Laboratory or equivalent national standards documentation and ISO IEC 17025 2005 General Requirements for the Competence of Testing and Calibration Laboratories Appendix D1 provides examples of uncertainty budgets for the HygroGen2 when using different calibration references These are for guidance only and ROTRONIC accepts no liability in relation to their use A1 1 Internal RH Probe Reference The display values on the HygroGen2 which are derived from the control pr
33. he conditions and therefore condensation in sample lines need not be considered Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software HygroGen2 humidity and temperature generator Version 2 0 x Instruction Manual Appendix Page 370f55 Document title Figure 32 RP2 Head fully inserted into HygroGen2 door Make sure the mirror is positioned so that moving air within the chamber flows over the mirror surface Figure 32 shows an example where the mirror sample cell clears the internal edge of the HygroGen2 door External sample loop operation To use a HygroGen2 with a chilled mirror that has an external sampling head connect via the heated sample loop points on the back panel The HygroGen2 sample ports and internal tubing are automatically controlled to 5 C above the chamber temperature to eliminate the possibility of condensation formation Figure 33 HygroGen2 sample Ports The connecting lines to the mirror must also be heated if the set chamber conditions create a dew point temperature higher than the ambient conditions Make sure that your chilled mirror operating capability is within the required range For humidity values with a dew point below ambient temperature heated sample lines are not required Remove the blanking caps fitted to the sample loop Swagelok fittings and use nuts and olives to connect the sample tubes from the chilled mirror 6 mm OD FEP or stainl
34. hin the unit will switch on giving an immediate audible indication the unit is powered 4 The controller will power up and display the controller primary screen as shown in figure 6 be On power up e The temperature and humidity set points default to the last set values e The temperature control defaults to automatic mode controlling the temperature e The humidity control defaults to manual mode If the Low Water Level alarm is displayed then the unit should be filled as described in the How to Fill the Water Reservoir Section 2 4 Humidification is disabled until water is filled Low Water level Humidiication Disabled Figure 4 Low Water Level Alarm 3 2 Upgrading From Previous Versions If you have upgraded your HygroGen2 software from version 1 x x the installation process installs HWA4 version 3 1 If you do not wish to activate the upgrade features AutoCal and Range Extension and you wish to use or only have an HW4 version 2 x licence please email hygrogen rotronic co uk for instructions to downgrade the HW4 software back to its original version or contact your ROTRONIC dealer for HW4 upgrade options Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 9o0f55 Document title 3 3 HygroGen2 Touchscreen Interface
35. ice centre if message persists Desiccant probe NC Desiccant probe connection failure Service centre repair only Manual control of desiccant condition enables use to continue Desiccant probe null data Desiccant probe communication invalid data output Service centre repair only Manual control of desiccant condition enables work to continue Low Water level Check water level empty and refill as required see Section 2 4 If message persists manual control of water level allows use to continue until next service High Water level Water level is too high fully empty and refill in accordance with Section 2 4 Contact service centre if message persists Humidification Disabled Displays when temperature is changing Wait for temperature to stabilise Desiccant condition warning Replace desiccant Section 7 2 Heating Disabled Over temperature event Heating shut down for safety reasons Contact service centre Sample Loop error Temperature fault sample loop temperature sensor or heater Operation can continue at dew points below ambient temperature Water Sensor error Fault with level sensor Manual supervision of water level allows use to continue until next service UV error UV Lamp failure Contact service centre Service Due More than 3000 hours in use since last service Contact your service centre to arrange for the HygroGen2 to be serviced Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Uni
36. iguration Mode Settings Certain settings Date Time and Touch Screen calibration require the HygroGen2 to reboot into Configuration Update Mode Selecting either option from the drop down menu will bring up the reboot screen HygroGen Software Update and Settings Updating HygroGen or HW4 software or changing the Touch Screen or Date amp Time settings requires the HygroGen to restart Click OK to restart and continue Figure 25 HygroGen2 Software Update and Settings After rebooting the configuration update mode page will be displayed HygroGen Software Configuration Please insert the HygroGen Update USB memory stick ee Please insert the HW4 Update USB memory stick Update H W4 Touch Screen and Date amp Time settings can Touch Date amp only be adjusted here Screen Time Click Cancel to restart the HygroGen unchanged Figure 26 HygroGen2 Configuration Update mode At the end of the configuration update process press OK to reboot back into normal operation mode Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software HygroGen2 Humidity and Temperature Generator Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 29o0f55 Document title 5 3 1 Date and Time Settings Date and time stamps are included in AutoCal and HW4 logged data To change these settings click the Date and Time button on the Updat
37. itzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 12o0f55 Document title 3 3 2 Trend Screen The Trend Screen shows the instrument s conditions and the set points the instrument is programmed to reach The y axis is self scaling the x axis time can be adjusted by tapping anywhere along it and typing in the desired timescale 23 00 230 Figure 9 Trend Screen 3 3 3 Programmer Function Screen The HygroGen2 programmer function enables the user to automate a sequence of RH and or temperature set points lt lt gt gt 1 Cal Profile j fa Sai e EH A LI o lt lt gt gt gt Stop 00 00 00 23 59 00 tu lo e 9 dE CAN EN O 230 Y 35 0 Figure 10 Programmer Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 130f55 Document title Program Identifies the program number and its description You can use the lt lt and gt gt buttons to scroll through the saved programs Step Identifies the set point within the program and its values You can use the lt lt and gt gt buttons to scroll through the steps SP
38. ivity Sensitivity 1 000000 1 000000 1 000000 1 000000 4 960000 4 960000 4 960000 1 000000 1 000000 1 000000 1 000000 1 000000 Sum of squares Standard uncertainty vsum of squares E lt 4 96 Expanded uncertainty 95 confidence RH deg C Equiv RH 0 900000 0 100000 1 000000 0 050000 0 099200 0 024800 0 248000 0 050000 0 050000 0 050000 0 050000 0 100000 0 793 1 59 am RH Divisor 2 00 1 00 1 73 1 73 1 73 1 73 1 00 1 73 1 73 1 00 1 00 1 00 One SD Squares 0 450 0 100 0 577 0 029 0 057 0 014 0 248 0 029 0 029 0 050 0 050 0 100 0 63 0 203 0 010 0 333 0 001 0 003 0 000 0 062 0 001 0 001 0 003 0 003 0 010 D2 HygroGen2 Uncertainty Framework External RH Probe Reference LD CON On Un Bb 0 N E e k k k WN e O Reference LD CON On Un Bb 0 N e e k k k WN e O Uncertainty source Uncertainty of reference probe Repeatability of humidity Reference drift Reference resolution Chamber temperature gradients Gradients through probe stem Temperature stabilisation Repeatability of temperature Humidity stabilisation Humidity fluctuations Instrument Under Test IUT Resolution Standard deviation of Ref readings Standard deviation of IUT readings From calibration certificate check uncertainty at input values From Standard Deviation of 10 repeated calibration runs Drift between two successive calibrations of the reference i
39. l Sample Loop Unless an external sampling system is to be used see Appendix A1 3 ensure the sample loop caps Figures 2 1 and 2 2 are firmly secured HygroClip Control Probe The HygroGen2 chamber conditions are monitored and controlled by a ROTRONIC HygroClip RH and temperature probe Depending on the circumstances and external references employed see Appendix A1 2 External Reference Guidelines this probe may be removed for regular calibration see section 7 1 A Note For speed of response this probe must be employed without protective filters 2 4 Water Reservoir The HygroGen2 requires 50 80 ml of distilled water in the internal reservoir Insufficient water will deactivate the humidification system As long as extreme care is taken not to overfill the water reservoir the HygroGen2 may be filled and emptied either with the unit powered up or shut down E M HG2 S V2 0 Rotronic AG Bassersdorf Switzerland Document code Unit HygroGen2 Humidity and Temperature Generator Instruction Manual for Software Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 6o0f55 Document title To fill the HygroGen2 1 Insert the tube of the dosing syringe with the plunger fully depressed 10 mm into the water port and extract any residual water by drawing out the plunger Depress the collar on the water port Figure 1 4 remove the dosing syringe tube Wipe up any spilt water with a
40. l mains connection at the rear of the unit Note The feet on the rear panel are for standing the unit for service purposes and to ensure a sufficient air gap behind the unit The unit will not operate in the vertical position 2 2 Electrical Supply Power Isolation The unit is supplied with a mains cord set The unit should be disconnected from the electrical supply before the unit is moved cleaned or has water added or removed Earthing This unit must be earthed Provision for the safety earth is made through the electrical mains connection Figure 2 8 to which all parts of the unit requiring earthing are internally connected An earthed electrical supply is required Earth Leakage Current Due to RF filtering there is an earth leakage current within the limits specified in EN 61010 1 2001 This may affect mains power circuits protected by Residual Current Device RCD or Ground Fault Detector GFD type circuit breakers particularly if used in multiples or with other equipment with an earth leakage current on the same supply circuit Over Current Protection To protect the internal circuitry against excess currents the mains supply to the unit must be connected with the mains cord set provided with the unit and to an appropriate mains supply Voltage Rating The unit is designed to work within the limits of a 110 230 VAC 50 60 Hz mains supply with voltage fluctuations up to 10 of the nominal voltage The unit is rated imp
41. ll form on a surface Relative humidity can be derived from this value with a corresponding temperature measurement There are two types an all in one probe which can be inserted through the HygroGen2 door with integrated PRT temperature probe e g MBW 473 with RP2 measuring head and an external sampling head for which the HygroGen2 external sample loop is employed see section below Figure 31 MBW RP2 Measuring Head Advantages of chilled mirror references e Best measurement capability e Instruments do not drift significantly e Operates over a broad range of humidity conditions Rotronic AG E M HG2 5 V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 humidity and temperature generator Instruction Manual Appendix Page 360f55 Document title Disadvantages e Regular mirror cleaning is required to maintain best possible performance e Mirror measuring heads generate heat when cooling the mirror Certain older chilled mirror probes fitted through the HygroGen2 door can introduce temperature gradients e For dew points above ambient conditions sample lines must be heated to avoid condensation which can introduce instability e Chilled mirrors may be more expensive to calibrate than RH probes e Longer stabilisation time Without doubt a chilled mirror reference can obtain the best possible calibration uncertainty but they do require a good level of us
42. midifier from the chamber and cool dry to ensure excess water is not left in the chamber This process may take several minutes Transit Shutdown Power Off button on screen Use to shutdown HygroGen2 gracefully if the HygroGen2 is to be transported The HygroGen2 will ask for the humidifier to be emptied of water It will isolate the humidifier from the chamber and then cool dry the chamber to ensure excess water removed This process may take several minutes Fast Shutdown Front Panel Power button 1 second push This switches the HygroGen2 off without saving any settings It does not allow the HygroGen2 to dry the chamber or isolate the humidifier After pushing the button it will take about 15 seconds for the HygroGen2 to switch off Force Shutdown Front Panel Power button 5 second push This forces the HygroGen2 to shutdown immediately The HygroGen2 does not dry isolate the humidifier or save any settings This process should only be used if all the other shutdown options fail DO NOT switch off at the back of the HygroGen2 or remove power from the HygroGen2 before it has shutdown Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Important notice before first use Advisory Notice Document title Contents of the Standard Supply Package e HG2 S HygroGen2 generator e HG2 DES Desiccant cell filled with molecular sieve pre installed e IEC mains cable e HG
43. n absorbent cloth immediately Fill the dosing syringe with 80 ml of distilled water Insert the end of the dosing syringe tube firmly back into the water port and discharge the syringe steadily If water leaks during this operation the filler tube is not correctly inserted in the water port Depress the collar on the water port to remove the dosing syringe tube Wipe up any spilt water with an absorbent cloth immediately A water level indicator is shown in the Settings screen see section 3 6 7 Figure 3 How to fill and empty the Water Reservoir Caution Do not overfill the HygroGen2 Overfilling of the unit will result in poor humidification and in extreme cases water may be pumped into the chamber If the HygroGen2 is overfilled the humidifier should be fully emptied and then refilled with 50 80 ml of water as described above If there is water present in the chamber of the HygroGen2 this should be removed using an absorbent cloth Ensure the HygroGen2 is switched off and the mains power unplugged before manually drying the chamber To empty the HygroGen2 1 Insert the tube of the dosing syringe with the plunger fully depressed 10 mm into the water port and extract any water by drawing out the plunger 2 Depress the collar on the water port to remove the dosing syringe tube Wipe up any spilt water with an absorbent cloth immediately 3 Distilled water discharged from the HygroGen2 may be stored safely and reused at a later
44. nstrument Resolution from manufacturer s specification Measured temperature gradients from the ROTRONIC HygroGen2 Service Stem conduction Measured stability from the ROTRONIC HygroGen2 Service From Standard Deviation of 10 repeated calibration runs Resolution of ROTRONIC HygroGen2 Control Clip Resolution of ROTRONIC HygroGen2 Control Clip Resolution from manufacturer s specification Standard Deviation of Ref readings during calibration Standard Deviation of IUT readings during calibration Temperature sensitivity Distribution normal normal rectangular rectangular rectangular rectangular rectangular normal rectangular rectangular rectangular normal normal Input values Oo P Value Units Sum of squares 4 96 RH deg C Sensitivity 1 000000 1 000000 1 000000 1 000000 4 960000 4 960000 4 960000 4 960000 1 000000 1 000000 1 000000 1 000000 1 000000 Equiv RH 0 900000 0 100000 1 000000 0 050000 0 099200 0 496000 0 024800 0 248000 0 050000 0 050000 0 050000 0 050000 0 100000 mm RH Divisor 2 00 1 00 1 73 1 73 1 73 1 73 1 73 1 00 1 73 1 73 1 00 1 00 1 00 One SD 0 450 0 100 0 577 0 029 0 057 0 286 0 014 0 248 0 029 0 029 0 050 0 050 0 100 Standard uncertainty vsum of squares Expanded uncertainty 95 confidence Squares 0 203 0 010 0 333 0 001 0 003 0 082 0 000 0 062 0 001 0 001 0 003 0 003 0 010 0 71 0 843 1 69 D3 HygroGen2
45. nt title 1 Scope of Document This instruction manual refers to HygroGen2 running software version 2 0 x To determine the software version your instrument is running please refer to the Settings screen as shown in section 3 3 4 For version 1 x x the software revision number is displayed by pressing the HGInfo button for version 2 0 x select Info from the Service drop down menu An equivalent manual is available on www rotronic com for HygroGen2 instruments running software version 1 x x 1 1 Introducing the HygroGen2 The HygroGen2 is a generator of controlled relative humidity and temperature environments primarily for use in calibrating humidity instrumentation but also well suited to the calibration of temperature instrumentation particularly those used for the measurement of temperature in air It is a completely self contained portable unit requiring no external resources except mains power This allows technicians to perform calibrations in the laboratory workshop or on site The HygroGen2 uses a mixed flow method for generating the rh required by the user A desiccant cell provides a source of low humidity and a piezoelectric humidifier generates high humidity A Peltier element is used for heating and cooling the chamber Measurement and control is provided by a combination of a ROTRONIC HygroClip probe an embedded Platinum Resistance Thermometer PRT and a multi loop controller Set points are entered using
46. obe as described in appendix A2 can be used as the reference Advantages e No supplementary instruments are required e Fastest response control is based on the reference value e Stability during calibration the reference is continually optimising the control value e The reference probe can be easily replaced with another calibrated probe e HygroClip probes have the facility to be adjusted to agree with a calibration reference meaning no corrections of the HygroGen2 display value need to be made in routine use Disadvantages e RH probes can drift over time so regular checks need to be performed to achieve best measurement capability and a larger drift component included in an overall uncertainty calculation e Probe characteristics such as hysteresis or temperature coefficients must be included within the overall uncertainty budget e RH probes are less accurate than chilled mirrors Using the internal probe as your reference provides the most convenient option but routine checks of the probe s stability are required to ensure the quality of the calibration Interim calibration checks against a traceable reference e g ROTRONIC non saturated salt solutions should be carried out regularly and the results recorded in a probe calibration history Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 humidity and temperature generator Instruction Manual for Software Instruction Man
47. rades and Software Updatess csscsssssccscscecsccscsceseeees 29 Servicing a a Maintenance aiii 30 FL Contool Hyerocip CAIDO AA hate dideadeaseiaene se 30 T EE eebe 30 ES APY BTOGENZ Clean a 32 714 AnhnUlal SERVICING OF HYOGA 33 Calibration Reference Options ccscccscsccscscscsccccscsccccccscsceccccscsceccccececscssescecsceceseecececesessess 34 ALL internal RA Probe Reterenden a 34 AL External RH Prope EE ee 35 AL Called Mirror Ree rente nun E ao ia 35 Temperature Control sii ee ee 38 HygroGen2 Screen MESSAGES insano aiii 39 HveroGenz SPeCifICAtlON E 40 HyeroGenz Order Codes uiiriitaita aia iaa 41 HyeroGenz Warranty Statements ia 43 Manufacturer amp Service Centre Contact Information ee NEEN REENEN REENEN REENEN REENEN EN 44 HygroGen2 Uncertainty Framework Internal RH Probe ccccccsscscscscessccscsceccccscsceccccecnces 45 HygroGen2 Uncertainty Framework External RH Probe cccsccscscssessccccscsccccccscsceccccccnces 46 HygroGen2 Uncertainty Framework Chilled Mirror Reference cscsccscscsscecsecsceccsceccececs 47 Dew Point Uncertainty Anal VSISisiicswsicsncsicsceaissidacecacessesadenesspeveswewds SEENEN SE EEN SNN ENER 48 Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software HygroGen2 Humidity and Temperature Generator Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 1of55 Docume
48. re Please be aware that incorrect shutdown of the HygroGen2 can lead to failure of the instrument Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Important notice before first use Advisory Notice Document title ADVISORY NOTICE SHUTDOWN PROCEDURE Version 1 1 This Document describes how to correctly switch off a HygroGen2 Introduction Incorrectly powering down or unplugging the HygroGen2 while in use may cause a software corruption This may mean the HygroGen2 will not start To correctly shutdown the HygroGen2 23 OO during normal operation E 0 ma 1 Press Power Off button on screen 350 Y E a a mmm 2 Select Shut Down 3 Allow the HygroGen2 to shutdown The HygroGen2 will isolate the humidifier and cool dry to ensure excess water is removed This may take several minutes Alternative procedures including force transit and fast shutdown are detailed on the next page DO NOT switch off at the back of the HygroGen2 or remove power from the HygroGen2 before it has shutdown Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Important notice before first use Advisory Notice Document title Summary of Shutdown Procedure Standard Shutdown Power Off button on screen Use to shutdown the HygroGen2 gracefully in normal operating conditions The HygroGen2 will isolate the hu
49. re 21 Water Level Indicator Rotronic AG Bassersdorf Switzerland E M HG2 S V2 0 Document code Unit HygroGen2 Humidity and Temperature Generator Instruction Manual for Software Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 22of55 Document title If the water level in the saturator falls below 20 ml humidification is disabled to prevent damage to the humidifier Humidification will not be re activated until the water level is restored Replenish the reservoir according to the instructions in section 2 4 Note If the Low Water Level message appears on the controller screen during use the HygroGen2 can be topped up with 50 ml of distilled water This will bring the total water content of the reservoir to approximately 80 ml 3 6 7 Water Level Indicator Calibration The water level sensor may behave differently for different qualities of water To ensure accuracy of the water level indicator period calibration is advised To access this feature go to the Settings Screen and select Water Level from the Settings drop down menu Follow the on screen instructions Figure 22 Water Level Adjustment Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 23o0f55 Document title
50. spect of any evidenced faulty workmanship and materials The warranty period is extended by a further 12 months when the unit is serviced at a ROTRONIC approved service centre 12 months after the date of supply Should the instrument be proven not to meet the published specifications or to be contrary to contract upon inspection the customer shall grant ROTRONIC the opportunity hereunder of repairing the fault by returning the unit carriage paid to ROTRONIC Should the supply or delivery of any improvement or replacement not prove possible the customer may choose between having the purchase price reduced or in demanding the contract of sale to be rescinded conversion Damage resulting from natural wear and tear an act of God or non compliance with the operating instructions shall be excluded from the warranty as well as mechanical interference by the customer or by third parties with plant and equipment of ROTRONIC without its written permission No liability will be accepted for defects damage or injury caused due to installation not carried out in accordance with the manufacturer s installation instructions The instrument maintains a record of the usage and this may only be reset by an authorised service centre this will determine the warranty period granted HygroGen Information The HygroGen has been switched on for 0 hours Period since last service 0 hours HygroGen Controller Serial Number 1001 HygroGen Software Version Number 1
51. t To register your HW4 software and to assign your full contact details visit www rotronic com and go to the Software Section Software registration will ensure that you receive full support and notification of upgrades available 4 3 HW4 Support Support for HW4 is available via email Please contact support rotronic ch including your full contact details the HygroGen2 serial number and HW4 product key and a description of your query or problem You will receive a response within a maximum of two working days E M HG2 S V2 0 Document code HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Document title 4 4 HW4 Updates and Upgrades Rotronic AG Bassersdorf Switzerland Unit Instruction Manual for Software Version 2 0 x Page 26o0f55 The version of HW4 installed on the HygroGen2 is a customised version standard versions are not compatible For details of upgrades and updates please refer to section 6 E M HG2 S V2 0 Rotronic AG Bassersdorf Switzerland Document code Unit HygroGen2 Humidity and Temperature Generator Instruction Manual for Software Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 27o0f55 Document title 5 Peripherals and Settings 5 1 USB Keyboard and Mouse All standard user functions may be accessed using the HygroGen2 touch screen However if desired any standard USB keyboard
52. t Instruction Manual for Software HygroGen2 humidity and temperature generator Version 2 0 x Instruction Manual Appendix l Page A0 of 55 Document title B2 HygroGen2 Specification HygroGen2 Specification Relative Humidity Temperature Control HygroClip2 S capacitive RH sensor Pt100 temperature sensor Control type Embedded multiple PID controller touch screen graphical user interface 0 60 C 5 60 C lt 0 01 C lt 0 05 C 15 50 C lt 0 1 C 5 60 C lt 0 15 0 5 C Generation method Mixed flow with desiccant Peltier thermoelectric element dryer cell and piezoelectric with radial chamber mixing fan humidifier 3 minutes 35 to 80 change 5 minutes 20 to 30 C change Control probe specification 0 8 rh 23 C 5 2 rh 0 1K 23 C 5 0 3K 0 60 C 0 60 C Typical calibration uncertainty 1 5 rh k 2 at 23 C 0 15 C k 2 15 50 C CCS Water level Water quality Desiccant condition USB ports Reference connection Programmer function 20 user program memory up to 200 set point changes per program Chamber volume Power Enclosure Operating Conditions dee Safety EN 61010 1 2001 EMC EN 61326 1 2006EN 61326 1 2006 SEN 61000 6 1 2007 m Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 humidity and temperature generator Instruction Manual Appen
53. t Road 200233 Shanghai China info rotronic cn www rotronic cn Phone 86 40 08162018 Fax 86 10 82254374 D1 HygroGen2 Uncertainty Framework Internal RH Probe Reference LD CON On Un Bb 0 NR e k k N PRO Reference Uncertainty source Uncertainty of reference probe Repeatability of humidity Reference drift Reference resolution Chamber temperature gradients Temperature stabilisation Repeatability of temperature Humidity stabilisation Humidity fluctuations Instrument Under Test IUT Resolution Standard deviation of Ref readings Standard deviation of lUT readings From calibration certificate check uncertainty at input values From Standard Deviation of 10 repeated calibration runs Drift between two successive calibrations of the reference instrument Resolution from manufacturer s specification Measured temperature gradients from the ROTRONIC HygroGen2 Service Measured stability from the ROTRONIC HygroGen2 Service From Standard Deviation of 10 repeated calibration runs Resolution of ROTRONIC HygroGen2 Control Clip Resolution of ROTRONIC HygroGen2 Control Clip Resolution from manufacturer s specification Standard Deviation of Ref readings during calibration Standard Deviation of IUT readings during calibration Distribution normal normal rectangular rectangular rectangular rectangular normal rectangular rectangular rectangular normal normal Input values Temperature sensit
54. ted value This value is determined at the instanct the correction is saved and is not an average of the previously recorded 5 points as shown in the calibration certificate these are shown in the certificate to give the user an estimate of stability Please note for probes with adjustment selected AutoCal will always attempt to make an adjustment If the correction is smaller than the resolution of the probe itself the adjustment may not be applied If at end of the run the probe has acknowledged all instructions it has been sent the Completed button will turn green on the AutoCal screen and the PDF is saved to the USB drive Details of the probes progress throughout the run can be viewed via the Details button If for any reason the run is not successful e g if a probe is unplugged mid run a csv file is saved instead with a log of the points that were recorded Please note the performance of a HygroClip2 within its stated specification is based on temperature adjustment being made at 23 C AutoCal does permit the adjustment to be made at other temperatures However this is only recommended when the operational environment of the probe being adjusted is only ever at another specific temperature e g a stability cabinet at 40 C Adjustments made at temperatures other than 23 C risk comprising the probes ability to meet its specification between the range of optimal performance 18 and 28 C Please note that HW4 cannot
55. the touch screen front panel display 1 2 Enhanced Features AutoCal and Range Extensions With the introduction of software version 2 0 x the HygroGen2 comes with optional Enhanced Feature upgrades AutoCal and RH Temperature Range Extensions These are activated by the application of a licence key available via your ROTRONIC dealer AutoCal allows you to pre program a series of set points and times and record the instrument s progression through them in a PDF Calibration Certificate which is written to an external USB disk drive Any values recorded on ROTRONIC HygroClip probes attached to the HygroGen2 via USB adaptors are recorded in the certificate Probes can be set to automatically adjust to match the HygroGen reference probe at predetermined values With optional Range Extensions the instrument is capable of creating chamber conditions down to 5 C and 2 rh and up to 99 rh Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 2o0f55 Document title 1 3 Temperature and Humidity References The HygroGen2 creates stable temperature and humidity conditions uniformly within its test chamber Instruments under test IUTs are inserted into the chamber and compared to a reference to calibrate and monitor their performance so that any appropriate adj
56. ual Automatic mode results in the unit attempting to adjust to the temperature or humidity in the chamber to match the set point value Manual mode automatic manual selection displays Off prevents the unit from trying to control the chamber Setting Temperature and Humidity Set Points At any time the user can change humidity or temperature set points by simply touching the set point on screen A pop up will appear and either the touch screen or where connected the keyboard mouse used to input desired values Peba Humech e T Figure 8 Set Point Entry Pop Up Note To aid a smooth and efficient transition between temperature set points the controller is programmed to suspend humidification during changes in temperature Once the chamber temperature is within 0 7 C of the temperature set point the humidity control is activated When set point combinations that resolve a low dew point condition i e 0 C 5 rh 36 C dew point are programmed make sure that the desiccant is dry enough to achieve the desired value Check the desiccant condition on screen Figure 12 and consult maintenance records to establish when the desiccant was last changed Stabilisation time to low RH conditions will be longer than normal as the chamber and internal surfaces need to be very dry Note Once the HygroGen2 has reached a stable condition the Auto Manual button will change colour to green Rotronic AG E M HG2 S V2 0 Bassersdorf Sw
57. ual Version 2 0 x Appendix Page 35o0f55 Document title Annual recalibration of the control probe by an accredited laboratory should be the minimum calibration regime Interim calibration checks in combination with the annual calibration results will allow the key drift component of an uncertainty budget to be defined and documented A1 2 External RH Probe Reference Any RH instrument placed through the HygroGen2 door can be used as the reference This may be desired if your quality system employs a particular RH probe with a long history It may not be desirable to adjust this probe and use it as the control probe a separate adjusted control probe may be more convenient The same disadvantages apply when using an external RH probe as a reference as when using the RH control probe Le accuracy susceptibility to drift hysteresis regular calibration requirement A1 3 Chilled Mirror Reference To reduce calibration uncertainty a chilled mirror instrument can be employed as the reference This type of instrument is generally accepted as a secondary humidity transfer standard Instruments should be maintained with an accredited 1SO17025 calibration certificate A chilled mirror can be used to validate the HygroGen2 calibration before and after on site calibration using the internal RH probe as a reference Chilled mirrors measure dew point which is a measure of water vapour concentration and is the temperature at which dew wi
58. ulse withstand over voltage category Il of IEC 60364 4 443 Where occasional voltage transients over 2 5 kV are expected or measured it may be necessary that the power installation to the unit includes a transient limiting device Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 4of55 Document title Mains Filtration If there is risk of power spikes or breaks it is recommended that an Uninterruptable Power Supply UPS is used to provide continued power and mains filtration This should be rated according to the HygroGen2 power specifications see Appendix B2 and the time required to run shutdown during power outage Conductive Pollution The unit is rated Pollution Degree 2 and must not be operated in environments where conductive pollutants for example carbon may enter the unit this includes excessive moisture ingress 2 3 HygroGen2 Assembly 1 Power switch 2 USB ports 3 Touch screen controller 4 Water port 5 Desiccant cell 6 Chamber door 7 Probe aperture bung 8 Handle 1 gt DOD ARNG 2 3 7 8 Figure 1 Front of HygroGen2 OJOJOO 1 Sample loop return 2 Sample loop outlet 3 USB ports 4 DVI monitor interface 5 Ethernet socket service use 6 Type label 7 Fan outlet 8
59. ustments can be made There are three main relative humidity RH calibration reference types that can be used with the HygroGen2 Each has its own advantages and disadvantages so the reference chosen should be determined by the uncertainty of measurement required e Internal control RH probe reference e External RH probe reference e Chilled Mirror Hygrometer reference Corresponding temperature references integrated in the above may be used or additional external temperature references employed for example platinum resistance thermometers PRTs It is vital to consider the comparison of temperatures measured by the reference the HygroGen2 and instruments under test Because RH is significantly dependent on temperature temperature measurement should be optimised to get meaningful RH results For more details please see Appendix A1 Calibration Reference Options and Uncertainty Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 30f55 Document title 2 Setting up the HygroGen2 2 1 Physical Location To ensure correct operation please ensure that 1 The unit is level and stable 2 There is at least 15 mm clearance underneath and at least 100 mm at the back of the unit to enable adequate air flow 3 There is adequate access to the electrica
60. vacuum cleaner to remove any particulates The filter material is replaced during servicing Chamber Periodically it is recommended that the internal surfaces of the HygroGen2 chamber sleeve are inspected and wiped clean of any visual residues using a lint free cloth moistened with distilled water Care should be taken to avoid mechanical damage to the control probe and sampling tubes inside the chamber Figure 30 HG2 S Chamber Purging internal pipes Some humidity instruments are used in environments where chemical contaminants may be present Should these transfer to the HygroGen2 this may result in drift of the RH control probe which would become apparent during calibration To purge the internal pipe work and chamber of the HygroGen2 replace the desiccant with Granular Activate Charcoal GAC and run the unit at 40 C and 5 rh for 6 hours Any volatile compounds within the HygroGen2 will be absorbed into the GAC Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 33o0f55 Document title 7 4 Annual Servicing of HygroGen2 The unit does not require routine user maintenance beyond that described in this Section For optimum performance ROTRONIC recommend that the HygroGen2 is serviced every 12 months at an approved HygroGen2 service centre d
61. witzerland Document code Unit Instruction Manual for Software HygroGen2 Humidity and Temperature Generator Version 2 0 x with AutoCal and Range Extension options Instruction Manual Page 20o0f55 Document title 3 6 2 Below Ambient Temperature Operation If the chamber is cooling or maintaining a temperature below ambient then the heat pump assembly inside the chamber will necessarily be below the chamber temperature If the humidity in the chamber is high the cool heat pump assembly can bring the local air temperature below the dew point causing condensation to occur on the internal heat pump assembly If run under these conditions for extended periods condensation will collect in the chamber This will not affect chamber performance within normal operating ranges though it will increase the time to achieve low humidity Water in the chamber can be removed using an absorbent tissue Ensure the HygroGen2 is switched off before manually drying the chamber When operating the unit at high humidity and chamber temperatures of more than a few degrees below ambient the following procedure will minimise condensation in the chamber during Stabilisation Set the set point temperature to approximately ambient Set the set point humidity to 10 rh and allow the HygroGen2 to stabilise Set the humidity control to Manual as described in Automatic Manual Mode Section 3 3 1 Apply the temperature set point to that desired and allow the H
62. ygroGen2 to stabilise Wait for the Humidity reading to fully stabilise may take 15 to 20 minutes Set the humidity control loop to Automatic aS a a iS It is recommended that the chamber door is not opened when the chamber temperature is below the ambient temperature as water vapour from the atmospheric air introduced will condense out into the chamber The dehumidification of the chamber takes longer at lower chamber temperatures 100 Ti Z Relative Humidity RH S 0 10 20 30 40 50 60 Temperature C Standard operating range Optional upgraded operating range Condensation possible in chamber dependent on ambient Figure 19 Humidity Map standard and extended ranges Rotronic AG E M HG2 S V2 0 Bassersdorf Switzerland Document code Unit Instruction Manual for Software Version 2 0 x HygroGen2 Humidity and Temperature Generator with AutoCal and Range Extension options Instruction Manual Page 21o0f55 Document title 3 6 3 Above Ambient Temperature Operation At high temperature and high relative humidity conditions it is necessary to allow the unit to stabilize to ensure minimal condensation It is recommended that for making measurements over 45 C and 80 rh that the HygroGen2 temperature be permitted to equilibrate for 20 minutes before high humidity is introduced It is also recommended that under these conditions the desired RH level is achieved in incremental steps allowing

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