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Oslo Science Park  
Gaustadalleen 21  
NO-0349 Oslo 
Norway

 

 

 

Date: 05/05/2021 

Page 

1

 of 

27

 
 

 

HumiStat Manual 

Copying allowed for internal use within organisation of buyer of the product. 

 

Other reproduction prohibited without permission from NORECS AS. 

 

NORECS AS takes on no responsibilities for the consequences of contents, missing parts, or errors in this manual. 

 

 

 

Содержание HumiStat

Страница 1: ... 1 of 27 HumiStat Manual Copying allowed for internal use within organisation of buyer of the product Other reproduction prohibited without permission from NORECS AS NORECS AS takes on no responsibilities for the consequences of contents missing parts or errors in this manual ...

Страница 2: ...2 5 2 Pump fluid details 6 2 5 3 Mixture design and operation 6 2 5 4 Debug Development 6 3 Setup 7 3 1 External fluid container 8 3 2 Priming or changing the fluid 8 3 3 Bending the fluid line 8 3 4 Pressure relief 9 3 5 Condensation 9 4 Software features 11 4 1 Mixture calculations 11 4 1 1 Relative humidity 12 4 1 2 Saved program 12 4 2 Fluid designer 12 4 3 Pump log tab 13 4 4 Fluid content 13...

Страница 3: ...emperature 17 6 Advanced features in the ini file 18 6 1 Logging 18 6 2 Moving average of flow of gas A 18 6 3 Flow graph 18 6 4 Minimum flow range limit 19 6 5 Syringe volume index 19 7 Use tips 20 7 1 Fuel cells 20 7 2 Chemical gradient crossover valve 20 7 3 Custom gas supply line 20 8 Specification 21 8 1 Mass flow controllers 21 8 2 Fluid pump 21 8 3 HumiStat definition 21 8 4 Inputs 21 8 5 O...

Страница 4: ...t is very accurate but this also means the gases to be used must be specified at the time of the order 1 1 Operating principle in layman s terms Pressurized gas lines are connected at inputs A and B The mixer controls the flow of each gas from the high pressure before the mixer to lower pressure after the mixer by using solenoid valves These valves vary the size of a small opening When the opening...

Страница 5: ...ould be free of ions and minerals as these will clog the gas line where the liquid vaporizes For example water must be demineralized deionized or distilled The tubing in contact with the fluid is brass copper stainless steel and PTFE Other materials are possible on request External fluid container is not included 2 2 3 PID controller The controller allows setting and maintaining temperature of the...

Страница 6: ...to select gases from the available pool and allows the user to design a mixtures with specific partial pressures of the three components and lay out a multi segment automatic mixing program The software is downloaded from http www norecs com index php page Software HumiStat Latest Version 2 5 1 Setup tab The setup tab is used to verify the connection between the software and the HumiStat and to se...

Страница 7: ... should show three or more separate COM ports on the list boxes Inside the HumiStat the USB cable is split and the mass flow controllers and the pump are all connected to USB and thus show up as virtual COM ports The devices used do not support automatic detection so the user must select a port for each device and then click Validate selected ports Which device is behind which port without said au...

Страница 8: ...ss Depending on the container design the fluid may or may not be in contact with ambient air which will dissolve into the fluid and corresponding amount of dissolved gases will end up into the made mixture in proportion to the amount of fluid added Oxygen has solubility of 0 009 g O2 liter of H2O at 25 C and 1013 mbar Consider solutions such as using protective gas inside the fluid container to re...

Страница 9: ...ade mixture such as separate flow controller in the instrument inlet the excess mixture will escape out of the bubbler into the vent without disturbing the operation of the HumiStat or the process In case explosive gases are used such bubbler must be made of non shattering material and not from glass or placed inside safety confinement The bubbler vent must be connected to appropriate ventilation ...

Страница 10: ...2021 Page 10 of 27 In cases where high steam content is necessary there are few things to consider The power settings in the PID controller are limited by default to maximum 50 power and to 150ºC It may be necessary to increase those setting to ensure full evaporation ...

Страница 11: ...same as the desired amount but slightly off The correction is applied automatically and the value in the field Achievable is used in the calculations On the right side of the tab various details about the mixture can be seen Once the mixture is as desired the user need to decide for how long this mixture is made Enter duration in hours to the Segment field and click Add or Save Segment A segment w...

Страница 12: ...ime when the Start with current program button is pressed the software automatically saves the segment program and the fluid design into a text file in userdata folder This file is meant to be a reference for the user of what the mixer has been doing each time it is used and this file cannot be opened back to the mixer but the design must be created by hand each time 4 2 Fluid designer The fluid d...

Страница 13: ...conds and will affect the mixture stability On the mentioned tab some calculation info is shows and the value for Syringe refill interference cycle will give the frequency of the syringe refill event in minutes 4 4 Fluid content The ppm fluid content can be limited on the settings tab to avoid accidentally introducing more fluid than the process can handle ...

Страница 14: ...ithm and the pumps speed is calculated and kept constant There is no feedback loop knowing accurately what is added to the mixture is more accurate than measuring the output and having feedback loop Measuring the output can be done by the end user to validate the made mixture but as the mixer can have various gases gas ranges fluids and mixture temperatures it is not possible to have all possible ...

Страница 15: ...appen This valve adds roughly 5 bars of pressure on the syringe pump Any gas trapped in the syringe will severely affect the volumes pumped when the pumo alternated between atm on syringe fill and 5 bars on dispose Additionally the if the end process is at elevated pressures it adds to the valve pressure Therefore the end valve should always be removed in case the end process is notably above atmo...

Страница 16: ...ntroduce new mixture to the process immediately and start to discard the other mixture to vent 5 10 Normal humidity No special arrangements required 5 11 High fluid concentrations In general steam can be wet or dry steam wet meaning mist floating droplets The mixture is wet steam at first as the injected fluid boils on the wall of the gas line These tiny droplets are carried away in the flow The l...

Страница 17: ...nd select gases for A and B from what is available even if the list does not match the connected gases 3 When asked to confirm the gas A and B click OK 4 Design a mixture using maximum amount of gas A and gas B and run the mixture for a few minutes The gas lines are now filled with N2 as and the gas in the corrugated heated gas line is sufficiently diluted 5 Turn off the mixture and start over thi...

Страница 18: ...software can create a log of events and save it as a file to HumiStat home folder This feature requires CSDispatcher exe to be located in the same folder as HumiStat The aforementioned can be downloaded in from the Tools folder from http www norecs com work _files __PUBLIC_FILES__ software HumiStat The feature is enabled by changing the ini file Logging section Type Off File Live value to File 6 2...

Страница 19: ... 0 to 50 will cause errors or unwanted mixer behaviour 6 5 Syringe volume index By default the mixer is equipped with 50 µL syringe This is good for generic lab use when the mixer gas flow is in the range of 500 mln min In some cases the syringe may be of larger volume If that is the case the user must edit the ini file to identify what syringe is fitted with the mixer The parameter to change is S...

Страница 20: ... large volume if the mix of gases is in the range or if the process reacts slowly then the volume and delay of the heated gas supply line is not important The second purpose of the heated gas line and the heat it has is to evaporate the input liquid Small amounts of fluid will evaporate into the dry gas without additional heat so mixtures with low humidity it is possible to use the mixer without t...

Страница 21: ...tpoint RT to 150 C Including power supply Any variations on request surcharge Available gases Air Ar C2H2 C2H4 C2H6 C3H8 C4H6 C4H10 CHClF2 CF4 CH4 CO CO2 D2 H2 He Kr N2 N2O Ne O2 SF6 Xe i C4H10 CCl2F2 R 134a NH3 pre mixed gases such as 5 H2 in Ar Some gases such as mixtures will have price surcharge and lower accuracy 8 4 Inputs Gas line A and gas line B inputs are 1 8 inch Swagelok brass bulkhead...

Страница 22: ...Oslo Science Park Gaustadalleen 21 NO 0349 Oslo Norway Date 05 05 2021 Page 22 of 27 ...

Страница 23: ...sample holder only USB cable PID controller manual CE declaration of conformity for the mixer CE declaration for power supply Before disposing of the packaging make sure you have all the mentioned items The software and the manual can be downloaded from http www norecs com index php page Software HumiStat Folder with the serial number of HumiStat in question Or better yet to ensure you get the lat...

Страница 24: ...he 24 VDC required by the equipment This adapter falls under both the EMC and LVD directives and therefore is CE marked on the surface and a separate declaration of conformity for the adapter is included with the supplied documentation CE Power supply GST220A24 R7B pdf The product operates at near atmospheric pressure The total volume of the part of the mixer that may be at elevated pressures is s...

Страница 25: ...Oslo Science Park Gaustadalleen 21 NO 0349 Oslo Norway Date 05 05 2021 Page 25 of 27 ...

Страница 26: ...Oslo Science Park Gaustadalleen 21 NO 0349 Oslo Norway Date 05 05 2021 Page 26 of 27 ...

Страница 27: ...H4 in N2 Desired total flow of mixture mln min 100 mln min Pressure in the gas delivery lines in bar a bar a atmospheric ambient absolute 2 bar a Pressure after the mixer pressure in the process or the experiment bar a My bio reactor is at ambient pressure Adapters The mixer has Swagelok 1 8 gas inputs 1 16 fluid input and 1 4 mixture output Please include suitable adapters Our lab has 6 mm PTFE g...

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