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QMA601 User’s Manual

Michell Instruments

 

 

v

3.7.7 

Field Calibration History ............................................................................... 44

3.7.8 About 

Screen 

.............................................................................................. 44

3.8 Sampling 

Guidelines 

......................................................................................... 46

3.9 Measurement 

Cycle 

.......................................................................................... 49

3.10 Calibration 

Cycle 

............................................................................................... 51

4 MAINTENANCE 

................................................................................................53

4.1 Safety 

.............................................................................................................. 54

4.2 

Removal and Replacement of the Power Supply Fuse .......................................... 54

4.3 

Replacing the Optional Contamination Trap ........................................................ 54

4.4 

Removal and Replacement of the Desiccant Column ............................................ 55

5 CALIBRATION 

..................................................................................................57

5.1 Traceability 

...................................................................................................... 57

6 SHIPPING 

.......................................................................................................59

6.1  Preparation for Shipping and Packing if Not Supplied as a Sample System ............ 59

7  APPLICATION SOFTWARE OVERVIEW ...............................................................60

7.1 System 

Requirements 

....................................................................................... 60

7.2 System 

Connection 

........................................................................................... 60

7.3 Getting 

Started 

................................................................................................. 61

7.3.1 

Connection Method (Serial Connection (RS485 or TCP) .................................. 62

7.3.1.1 RS485 

Connection 

................................................................................. 62

7.3.1.2 

Modbus TCP Connection (Ethernet)  ....................................................... 62

7.4 Main 

Window 

................................................................................................... 63

7.5 

Using the Chart ................................................................................................ 64

7.5.1 

Chart Options Window ................................................................................. 65

7.6 Data 

Logging 

................................................................................................... 66

7.6.1 

Configuring Logging Start Time .................................................................... 67

7.6.2 

Configuring Logging Stop Time .................................................................... 67

7.6.3 

Starting the Log .......................................................................................... 67

7.6.4 

Viewing a Log ............................................................................................. 67

7.7 

Parameters / Field Calibration ............................................................................ 67

7.7.1 Field 

Calibration 

.......................................................................................... 68

Содержание QMA601

Страница 1: ...QMA601 Process Moisture Analyzer User s Manual 97449 Issue 3 June 2018...

Страница 2: ...his information when contacting Michell Instruments for service purposes Analyzer Code Serial Number Invoice Date Location of Analyzer Tag No Analyzer Code Serial Number Invoice Date Location of Analy...

Страница 3: ...td and may not be copied or otherwise reproduced communicated in any way to third parties nor stored in any Data Processing System without the express written authorization of Michell Instruments Ltd...

Страница 4: ...p 17 3 2 User Interface 18 3 2 1 Interface Controls 18 3 2 2 Up Down Arrow Keys 18 3 2 3 ENTER Key 19 3 2 4 ESC Key 19 3 2 5 Pop Up Keypad 19 3 3 Menu Structure 20 3 4 Description of Measured Paramete...

Страница 5: ...IPPING 59 6 1 Preparation for Shipping and Packing if Not Supplied as a Sample System 59 7 APPLICATION SOFTWARE OVERVIEW 60 7 1 System Requirements 60 7 2 System Connection 60 7 3 Getting Started 61 7...

Страница 6: ...e 21 Field Calibration Screen 2 30 Figure 22 Field Calibration Screen 3 30 Figure 23 Field Calibration Screen 4 31 Figure 24 Field Calibration Screen 5 31 Figure 25 Monitor Screen 32 Figure 26 Setting...

Страница 7: ...ters 44 Table 15 Calibration History Screen 45 Table 14 Ethernet Screen Parameters 45 Table 16 Using the Chart 65 Table 17 Chart Options 66 Table 18 Modbus Register Map 83 Appendices Appendix A Techni...

Страница 8: ...s where potentially hazardous operations need to be carried out and where particular attention to personal and personnel safety must be observed DANGER Electric Shock Risk Where this symbol appears in...

Страница 9: ...f the sample gas The drier the sample gas the longer lifetime of the desiccant Optional contamination trap typical lifetime of around 1 year a column of activated charcoal that protects the Desiccant...

Страница 10: ...es Celsius F degrees Fahrenheit EU European Union Hz Hertz IEC International Electrotechnical Commission kg kilogram lb pound lbs MMscf pounds per million standard cubic foot mA milliampere mV millivo...

Страница 11: ...urable analog outputs Status and Process Alarms Minimal Straightforward Maintenance Sophisticated analyzers are often complicated and require experience and special care in use increasing cost of owne...

Страница 12: ...ochemical Gases with protection against particulates Trace moisture for Asymmetric Cycle variant includes membrane filter and 3 way valve for purge gas Our QMA601 sample systems facilitate regulation...

Страница 13: ...rolled automatically The sensor cell is located at the end of the sensor block and contains the sensor and reference oscillators Figure 1 shows a schematic diagram of this sampling system SAMPLE IN SA...

Страница 14: ...ulate Any documentation supplied with the product should be removed from the packaging crate and stored elsewhere to protect its integrity For the period from installation of the product to commission...

Страница 15: ...and handling precautions The QMA601 is not designed as portable or transportable equipment The product should be rigidly fixed in position as per the full installation instructions The weight of the...

Страница 16: ...be placed in a shaded position to prevent heating effects through sun radiation The weight of the analyzer is 35kg 77lbs Conduit entries are intended for connection to threaded rigid metal conduit or...

Страница 17: ...re range of 5 to 45 C 41 to 113 F Refer to Appendix B for the Hazardous Area Location certification details of this product Hazardous Area Location certificates for this product may be downloaded from...

Страница 18: ...Ratings and Installation Details This equipment and all power isolation devices must be installed in a location and position that allows safe and easy access to their operation and is able to rigidly...

Страница 19: ...re that electrical safety is maintained Connect each of the Live L Neutral N and Earth Ground E conductors to the similarly marked terminals L N E on the Power In connector shown above 24 V DC Units T...

Страница 20: ...The end user installer is not permitted to machine additional entries into the enclosure This equipment must be supplied with a voltage between the range of 85 to 264 V AC 47 63 Hz 140 W max or 24 V...

Страница 21: ...not be in the 24 V DC version Figure 5 Other Electrical Connections 1 Analog Outputs 21 OP2 20 OP2 19 OP1 18 OP1 2 External Pressure 17 16 3 Alarms 3 4 15 COM4 Analyzer Status Alarm NO in warning faul...

Страница 22: ...RX _D2 Receive Data Green with white stripe or solid green 7 BI _D4 Bi directional White with brown stripe 8 BI _D4 Bi directional Brown with white stripe or solid brown 2 7 Pressure Safety WARNING T...

Страница 23: ...eriod If the measurement system has not been isolated condensate can be displaced on re start into components and associated tubework WARNING Exd enclosure breather must remain open to atmosphere at a...

Страница 24: ...sed liquid within them In such cases sampling from fast loops and or from downstream of existing catch pot coalesce systems is always preferred Failure to observe these recommendations will potentiall...

Страница 25: ...rols display functions and screens Prior to operation the analyzer must have been connected to the correct electrical power supply and the relevant analog and alarm outputs connected to external syste...

Страница 26: ...ace the sample gas line 2 Switch on the power supply to the analyzer The Initializing Screen will appear QMA601 Process Moisture Analyzer Initializing 3 After the initializing period has finished the...

Страница 27: ...igure 7 Typical Display Using the inlet pressure regulator adjust the sample pressure until the reading on the internal sensor pressure readout matches the value on the calibration certificate The bac...

Страница 28: ...sed to navigate the menu system Key presses are detected through the glass front panel and are indicated by a blue LED above the key 3 2 2 Up Down Arrow Keys Figure 9 Up Down Arrow Keys The Up and Dow...

Страница 29: ...ed to navigate into menus open keypads cycle through options and accept changes For non data entry options pressing the ENTER key moves to the next available option 3 2 4 ESC Key ESC Figure 11 ESC Key...

Страница 30: ...mits which can be entered 000 0 0 0 to 300 0 Figure 12 Pop Up Keypad Key Action Note ESC Moves cursor to last digit Exits to previous page Up and Down Increments or decrements selected number ENTER Mo...

Страница 31: ...R COM ETHERNET COM DRYER SERVICE MOIST GEN SERVICE WARNINGS LOGGING LOG PAGE CALIBRATE CAL SOURCE FIELD CAL MONITOR SETTINGS INSTRUMENT ID PROTOCOL FIRMWARE VER SERIAL NUMBERS LANGUAGE CHART PERIOD HO...

Страница 32: ...Water Vapor Pressure Pa water vapor pressure in pascals lbs MMscf pounds of H2 O per million standard cubic feet Dew point dew point temperature of either ideal or natural gas depending on options se...

Страница 33: ...for warning fault The parameter selection can be set in the warnings menu Warnings Internal warning alarms Possible States OK WARNING DP Shown as X where X the currently selected primary measurement p...

Страница 34: ...bration Gas Phase Next Phase Measure Manual Sample 30s Press ESC to exit page Figure 15 Large Parameter Display Mode Gas Phase Displays the current gas phase being analyzed Possible States Reference C...

Страница 35: ...s Manual Michell Instruments 25 OPERATION Full Screen Graph This page displays a full screen graph of Parameter 1 To access the full screen graph press the Up key from the Main Screen Figure 16 Full S...

Страница 36: ...d through the Warnings item on the Main Screen and is used enable or disable the internal alarms When an individual alarm is disabled it will not trigger the internal alarm This screen is accessed by...

Страница 37: ...fault Alarm enabled Fault condition Table 4 Warning Screen 3 6 2 Logging Screen This menu contains a record of the last 280 data points of the Log Parameter value It is accessed through the Logging i...

Страница 38: ...ation Screen press the ESC key Figure 19 Alarm Screen Parameter Description Alarm Selector Selects the required alarm Available Options Alarm 1 Alarm 2 Alarm 3 Alarm 4 Analyzer Status Alarm only Clear...

Страница 39: ...e field calibration parameters to be set and activated if necessary It is accessed through the Field Cal item on the Main screen Depending upon the field calibration settings some parameters may becom...

Страница 40: ...is is chosen then the Cal Method can be set to Manual or Automatic Cal Method Toggles between manual calibration or automatic calibration mode Available Options Automatic Manual Manual Cal Method if t...

Страница 41: ...er must enter the external reference moisture in the Ext Ref ppm setting If an internal calibration source is selected then the Ext Ref selection box is hidden as shown above If an external calibratio...

Страница 42: ...how often in days a calibration is performed Hour of Day This is where the user selects the hour within the day at which the calibration will occur Cal Cycles This is where the user selects how many c...

Страница 43: ...ncy Hz Live delta frequency reading the beat frequency difference between the sample and reference phase Enclosure Temperature 0C Live QMA601 enclosure temperature Flow Rate ml min Live flow rate read...

Страница 44: ...s HMI RTC SW Comms Cal History About 3 7 1 Measurement Screen This screen is accessed by pressing the ENTER key from the Configuration Screen Navigate between menu items with the Up and Down keys Pres...

Страница 45: ...formation DP Calculation Selects the dew point calculation method Available Options IGT IGT Bulletin 8 ISO ISO 18453 Ideal Gas Pressure Input Selects the pressure source Available Options Atmos Atmosp...

Страница 46: ...Carrier Gas Screen There are 20 different preset gases the user can choose from along with 3 user definable presets Air Argon Methane Acetylene Ethylene Ethane Propane Butane Propene Carbon Monoxide...

Страница 47: ...ser gas settings using the User Gas Setup page which is opened See Appendix F for further information on calculating User Flow Correction Factors 3 7 1 2 DP Calculation Method Selects the calculation...

Страница 48: ...os option is selected the Fixed Ext 4mA and Ext 20mA selection boxes are all hidden as shown below Figure 32 Atmos Option Fixed Allows the user to enter the fixed pressure using the onscreen keypad Ex...

Страница 49: ...ction on how to calculate the FCF 3 7 2 Outputs Screen The Outputs Screen allows the two analog output channels to be set up It is accessed through the Outputs item in the Settings menu This screen is...

Страница 50: ...hannel Available Options H2O ppmv H2O ppmw mg m3 WVP Pa H2O lbs MMscf DP Oven Flow Cell Pr Ext Pr Output Type Selects the signal type of the output Available Options 1 5 V 4 20 mA Low Sets the lower o...

Страница 51: ...e Configuration Screen or from the Oven heating Screen at start up If this screen is entered during start up after any adjustments have been made press the ESC key twice to return to the Main Screen N...

Страница 52: ...ure units Available Options C F Pressure Unit Selects the units in which the pressure measurements are displayed Available Options barg bara psig psia MPag mmHg MPa Abs Flow Unit Selects the flow unit...

Страница 53: ...ween menu items with the Up and Down keys Press the ENTER key to access the menu item Numerical parameter options activate a pop up keypad For more information on the keypad see Section 3 2 5 To retur...

Страница 54: ...on Instrument ID Instrument s Modbus address Protocol Sets the physical communication method Available Options RS485 USB Ethernet Note Ethernet option only shows if this is installed Address Opens the...

Страница 55: ...page contains a summary of the previous five Sensor Correction Factors SCF s The page also contains an option to re load any of these SCFs Figure 39 Calibration History Screen Parameter Description SC...

Страница 56: ...led using a high quality pressure regulator on the gas inlet and a back pressure regulator on the outlet Dried samples and wet samples are alternately passed through the sensor cell The difference in...

Страница 57: ...un of tubework and the smallest bore possible taking care not to induce pressure differentials by aiming for too high a flow rate through too small a bore Michell Instruments supplies a range of preci...

Страница 58: ...he sampling tube diameter the more exposed the gas will be to the tube wall Therefore it is recommended to use the smallest possible tube diameter to minimize the previously mentioned effects This mus...

Страница 59: ...fference in frequency between the sensor and reference crystals is measured The sample and calibration gas paths are shown in green These lines are continually purged during the reference phase of the...

Страница 60: ...ple of the measurement cycle SAMPLE IN SAMPLE OUT DD HE1 HE2 FC1 FC2 FC3 V1 V2 V3 MFC QCH PS MG Key DD Desiccant column MG Moisture generator MFC Mass flow controller V1 V2 V3 Solenoid Valves QCH Sens...

Страница 61: ...ending on what was specified at the time of order The calibration is carried out in a two phase cycle This is shown by the red line in Figure 43 The calibration and sample gas paths as shown by the gr...

Страница 62: ...SAMPLE IN SAMPLE OUT DD HE1 HE2 FC1 FC2 FC3 V1 V2 V3 MFC QCH PS MG Key DD Desiccant column MG Moisture generator MFC Mass flow controller V1 V2 V3 Solenoid Valves QCH Sensor cell HE1 HE2 Heat exchange...

Страница 63: ...difference between the calibration reference gas and the dried gas is measured As the moisture content of the calibration gas is known the difference between this and the measured value is equal to th...

Страница 64: ...maintenance is required However if a fault does occur with the system that is not covered within this manual please contact Michell Instruments see contact information at www michell com or your local...

Страница 65: ...4 2 Removal and Replacement of the Power Supply Fuse This product is provided with an internally mounted fuse located beneath the power connector The fuses are rated at Mains 240 V AC 3 A 24 V DC 5 A...

Страница 66: ...Removal and Replacement of the Desiccant Column Removal 1 Isolate the sample gas supply and de pressurize the QMA601 sampling system NOTE Goggles should be worn at all times when working with pressur...

Страница 67: ...to the system with the snubber at the top and the VCR face seal at the bottom as shown above Twist the index plungers to the lock position 3 Check that the Desiccant Column is secure and locked into t...

Страница 68: ...the analyzer s calibration is only valid while the inlet pressure and back pressures have been set correctly A calibration certificate bearing the calibration data points is issued with each analyzer...

Страница 69: ...QMA601 User s Manual Michell Instruments 59 CALIBRATION Figure 45 Typical QMA601 Calibration Certificate...

Страница 70: ...ze the system Remove the connections to the GAS IN and GAS OUT ports Purge the gas lines with dry nitrogen to remove potentially corrosive gases 2 Switch off the analyzer isolate the power supply and...

Страница 71: ...ware performance the host computer should meet the following minimum requirements O S Windows XP Windows VISTA Windows 7 32 bit or 64 bit Windows 8 32 bit or 64 bit CPU Intel Pentium III 500 MHz recom...

Страница 72: ...MA analyzer Choose the Modbus slave address default is 1 Select the Connection Method for the analyzer and associated options For more information see Section 7 3 1 Click the Connect button After a fe...

Страница 73: ...port or when connecting to an RS232 to USB adaptor To find the COM port number assigned to a USB to RS232 adapter open Windows device manager and expand the Ports COM LPT branch The USB to RS232 adap...

Страница 74: ...art update rate is 2 seconds but this may be changed by using the chart options window Data logging does not start automatically this is indicated by the text NOT LOGGING on the Main Screen Click the...

Страница 75: ...Y Allows the user to scroll the Y axis up and down SIZE X Allows the user to re scale the X axis SIZE Y Allows the user to re scale the Y axis ZOOM BOX Allows the user to draw a box in the data area...

Страница 76: ...rom the chart Tick to show untick to hide Update rate Allows the user to change the update rate of the chart Reset chart Clears all chart data Restore on plot mode When ticked selecting plot mode will...

Страница 77: ...format QMA dd mm yy hh mm ss log where dd date mm month yy year hh hour 24 hr mm minutes and ss seconds Example QMA 15 12 14 13 41 55 log which is 15th December 2014 at 1 41 55 pm Auto generated log...

Страница 78: ...imes click the START button 7 6 4 Viewing a Log Click the view log file button to view a log file within Windows notepad 7 7 Parameters Field Calibration Analyzer parameters may be viewed and edited v...

Страница 79: ...l Instruments 69 APPLICATION SOFTWARE 7 7 1 Field Calibration This window allows manual analyzer calibrations to be performed and settings for automatic calibrations configured These options mirror th...

Страница 80: ...QMA601 User s Manual 70 97449 Issue 3 June 2018 APPENDIX A Appendix A Technical Specifications...

Страница 81: ...y Voltage 85 to 264 V AC 47 63Hz or 24 V DC ATEX IECEx 24 V DC only cCSAus Alarms 1 x System Alarm volt free change over FORM C 3 x process alarms selectable for various parameters volt free change ov...

Страница 82: ...tem Sample System Enclosure 316L stainless steel Hazardous Area Specifications Hazardous Area Certification ATEX IECEx CSAc CSAus TC TR II 2 GD Ex d IIB H2 T6 Gb Ex tb IIIC T85 C Db Tamb 40 C to 60 C...

Страница 83: ...QMA601 User s Manual Michell Instruments 73 APPENDIX B Appendix B Hazardous Area Certification...

Страница 84: ...TEX IECEx II 2 GD Ex d IIB H2 T6 Gb Ex tb IIIC 85 C Db 40 to 60 C CSAus Class I Division 1 Groups B C D T6 25 to 55 C CSAc Class I Zones Ex d IIB H2 T6 Gb Tamb 20 to 55 C B 3 Global Certificates Appro...

Страница 85: ...tion The QMA601 must only be installed by suitably qualified personnel and in accordance with the instructions provided and the terms of the applicable product Certificates Maintenance and servicing o...

Страница 86: ...QMA601 User s Manual 76 97449 Issue 3 June 2018 APPENDIX C Appendix C Modbus Register Map...

Страница 87: ...Configuration R W E 3 Analogue Output Configuration R W F 4 Internal Logging Configuration R W U 5 MFC Span in mlm Gas Number for flow rate and mol weight correction R W S 6 PID Proportional Value R...

Страница 88: ...20mA Value R W A1 0 65535 54 External Pressure ADC Val 4mA R W A1 0 to 4095 55 External Pressure ADC Val 20mA R W A1 0 to 4095 56 RTC Cal Value PPM error R W A1 0 121 57 Analyzer Serial Number HI WOR...

Страница 89: ...o Word R W I 104 Osc Table1 Ref 10 Hi Word R W I 0 0001 to 10000 0000 105 Osc Table1 Ref 10 Lo Word R W I 106 Osc Table1 Ref 11 Hi Word R W I 0 0001 to 10000 0000 107 Osc Table1 Ref 11 Lo Word R W I 1...

Страница 90: ...Table2 Ref 02 Lo Word R W I 152 Osc Table2 Ref 03 Hi Word R W I 0 0001 to 10000 0000 153 Osc Table2 Ref 03 Lo Word R W I 154 Osc Table2 Ref 04 Hi Word R W I 0 0001 to 10000 0000 155 Osc Table2 Ref 04...

Страница 91: ...for protected registers W A1 NOT USED CURRENTLY 196 RTC Set Hours Mins W H Write to set Time 197 RTC Set Day Month Year W J Write to set Date 198 Instrument Command Register W T 199 200 Control Board...

Страница 92: ...ity Used Moist Gen Capacity Used R V 244 245 Ethernet Settings IP Address Upper Bytes R W Q Volatile Cannot write via Modbus only via display 246 Ethernet Settings IP Address Lower Bytes R W Q 247 Eth...

Страница 93: ...286 Ppmv Log t7 Hi Word R I For cal use 287 Ppmv Log t7 Lo Word R I For cal use 288 Ppmv Log t8 Hi Word R I For cal use 289 Ppmv Log t8 Lo Word R I For cal use 290 Ppmv Log t9 Hi Word R I For cal use...

Страница 94: ...6 5 4 3 2 1 0 B1 Signed Short Range 32768 to 32767 B2 Signed Short 10 Range 3276 8 to 3276 7 B3 Signed Short 100 Range 327 68 to 327 67 B4 Signed Short 1000 Range 32 768 to 32 767 B5 Signed Short 100...

Страница 95: ...ixed pressure User input value 10 External Line pressure Ext sensor Pressure Units PU Number of cal points to use CP 000 Bar G def 001 Bar A 010 Psi G 011 Psi A 100 MPa G 101 mmHg 110 MPa A Minimum 3...

Страница 96: ...Moisture PPMv 0001 Moisture PPMw 0010 Moisture MGM3 0011 Moisture PA wvp 0100 Moisture LBMMSCF 0101 Dew point 0110 Oven temperature 0111 Flow rate def 1000 Cell Pressure 1001 Ext Line Pressure L1 1 A...

Страница 97: ...floating point to HEX are shown below 1 10 3 sign bit 0 Exponent 3 therefore exponent field 127 3 130 and bits 30 to 23 1000 0010 The mantissa 1 2875 which in binary representation 1010 0100 1100 110...

Страница 98: ...al 1 External 1 CF manually written by user 0 CF generated via calibration Register Configuration L System Status Register 229 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 A4 A4 A3 A3 A2 A2 A1 A1 SS PS DH SM...

Страница 99: ...0 In this case the correction factor would be set to 1 0 Checked after field calibration 6 0040 Beat freq out of range Beat frequency Under Over acceptable range 1500 Hz 20000 Hz 7 0080 ppmV over rang...

Страница 100: ...s Register Configuration Q Various Parameters High Byte and Low Byte 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MS MS MS MS MS MS MS MS MS MS MS GN GN GN GN GN MFC Span in ml m MS Gas Number GN 0 to 2000 m...

Страница 101: ...urement if in Cal mode i e Abort Cal OR Set to Manual Cal if in Auto cal countdown mode 52 Set System Mode to Calibration if manual cal option set OR Start Auto Cal countdown mode if Auto Cal option s...

Страница 102: ...Configuration Service Interval Days 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 DC DC DC DC DC DC DC DC ML ML ML ML ML ML ML ML Dryer Capacity or Used DC in ppm Moisture Gen Capacity or Used ML in Days 0 t...

Страница 103: ...0 0 to 60000 0 to 60000 A1 unsigned short Oven T degC 50 0 to 100 0 59 9 to 60 1 500 to 1000 B2 signed short 10 Oven T degF 58 0 to 212 0 139 8 to 140 2 580 to 2120 B2 signed short 10 Flow ml m 0 0 to...

Страница 104: ...isters 38 39 and 40 for the Flow correction and at registers 41 42 and 43 for the molecular weights 0 Air Mixture 12 He Helium 1 Ar Argon 13 Kr Krypton 2 CH4 Methane 14 N2 Nitrogen 3 C2H2 Ethyne 15 Ne...

Страница 105: ...QMA601 User s Manual Michell Instruments 95 APPENDIX D Appendix D Quality Recycling Compliance Warranty Information...

Страница 106: ...directives Full information can be found on our website at www michell com compliance This page contains information on the following directives ATEX Directive Calibration Facilities Conflict Mineral...

Страница 107: ...QMA601 User s Manual Michell Instruments 97 APPENDIX E Appendix E Return Document Decontamination Declaration...

Страница 108: ...icals YES NO Radioactive substances YES NO Other hazards YES NO Please provide details of any hazardous materials used with this equipment as indicated above use continuation sheet if necessary Your m...

Страница 109: ...QMA601 User s Manual Michell Instruments 99 APPENDIX F Appendix F Calculating Conversion Factors for Gas Mixes...

Страница 110: ...the mix For example if the gas mixture contains 10 N2 C1 1 000 30 Ar C2 1 395 50 CH4 C3 0 7419 10 CO2 C4 0 7186 1 1 1 395 0 8865 0 1 0 3 0 7419 0 5 0 7186 0 1 Cmix Cmix Below are the conversion factor...

Страница 111: ......

Страница 112: ...http www michell com...

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