Fuji Electric ZSS-7 Instruction Manual Download Page 41

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INZ-TN7ZSS-E

5.3 Outline of screen

5.3.1 “Measurement” screen

(appears when the power is turned ON)

On the MEASURE screen, measurable component, alarm, conversion measurable component, and analog
input are displayed beginning at the top. When more than five items are displayed, switch the screen by

key or

key.

Summary of Contents for ZSS-7

Page 1: ......

Page 2: ...t permission If it becomes necessary to modify the laser gas analyzer contact the manufacturer in advance This instruction manual shall be stored by the person who actually uses the laser gas analyzer...

Page 3: ...light quantity 19 4 7 Angle adjustment 20 4 8 Piping system diagram 23 4 9 Assembly of receiver unit and transmitter unit 24 4 10 Wiring connection 25 4 11 Adjustment of light quantity 27 4 12 How to...

Page 4: ...INZ TN7ZSS E iii 7 5 Replacement of O ring and packing 94 8 TROUBLESHOOTING 95 APPENDIX 1 SPECIFICATIONS FOR THE CROSS STACK LASER GAS ANALYZER 98 APPENDIX 2 CODE SYMBOLS 102...

Page 5: ...malfunction of the unit 2 Ask professional services or your dealer for installation transportation reinstallation and associated piping and wiring work Improper installa tion may result in a falling...

Page 6: ...gas or inert gas is used as calibration gas be sure that the position of the air ventilation or exhaust port is suitable Otherwise you may inhale exhaust gas Furthermore suffocation brain disorder ci...

Page 7: ...rist watch finger ring or the like metallic accessories And never touch the instrument with a wet hand to avoid electric shocks 4 If the fuse is blown eliminate the cause and then replace it with the...

Page 8: ...of light 1 2 Handling of product and operating precautions First read this instruction manual carefully and then make a plan for periodic inspection to perform appro priate maintenance management To...

Page 9: ...oduct name Quantity 1 Control unit 1 1 Bolt 1 8 16 2 Receiver box 1 2 Nut 1 8 16 3 Transmitter box 1 3 Spring washer 1 8 16 4 Angle adjustment unit 2 4 Flat washer 1 8 16 5 Cable between receiver unit...

Page 10: ...between receiver unit and transmitter unit Calibration gas cell Angle adjustment unit Standard accessories Hexagonal socket bolt Bolt Nut Spring washer Flat washer Bolt for angle fine adjustment Power...

Page 11: ...10m 0 5 to 5m Note 1 Receiver box 120 180 100 2 Transmitter box 160 240 100 160 320 100 4 Flange of angle adjustment 6 Purging gas inlet with bell and spigot joint for 10 8 6 Purging gas inlet Receiv...

Page 12: ...ntation air It is required to prevent lens conden sation and eliminate attached dust Prepare the pipe to connect to joint for tube 10 8 Use the air for air purge which does not contain oil or mist Oth...

Page 13: ...the product you received 1 Input output terminal 1 AO 4 points External power supply terminal L N PE 1 2 3 Screw diameter M4 1 100 to 240V AC 50 60Hz L 2 100 to 240V AC 50 60Hz N 3 PE Earth terminal...

Page 14: ...19 DO4 Beyond the upper lower limits Ch 1 31 DO10 20 DO4 32 DO10 21 DO5 33 DO11 Beyond the upper lower limits 22 DO5 34 DO11 Ch 2 23 DO6 35 DO12 24 DO6 36 DO12 Note 1 Unassigned terminals may be conne...

Page 15: ...z L 2 100 to 240V AC 50 60Hz N 3 PE AO terminal 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Screw diameter Equivalent to M2 1 AO1 Ana...

Page 16: ...34 DI1 15 DO4 Beyond the upper lower limits 35 DI2 Switching input for remote instantaneous value average value option 16 DO4 36 DI2 17 DO5 37 DI3 Remote hold option 18 DO5 38 DI3 19 DO6 39 DI4 20 DO6...

Page 17: ...00 to 240V AC 50 60Hz N 3 PE AO terminal 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Screw diameter Equivalent to M3 1 AO1 Analog output 1 3 AO2 Analog outpu...

Page 18: ...lue option 30 DI2 31 DI3 Remote hold option 32 DI3 Note 1 Provide relay output of LD failure LD temperature error or connection error as analyzer faulty Note 2 Do not provide relay output of high gas...

Page 19: ...inside of the unit is free from ca ble chips and other foreign objects Otherwise it may cause fire accident or malfunction For lifting the analyzer be sure to wear protective gloves Bare hands may lea...

Page 20: ...and CO O2 analyzer excluding for air purge version of which 4th digit of code symbol is T or V 10 Air purge flow rate 20L min or more depending on measured gas temperature velocity pressure moisture...

Page 21: ...bient humidity 90 RH or less 3 Power supply Rated voltage 100V to 240V AC Rated frequency 50Hz 60Hz 4 Avoid a place that receives heavy vibration 5 A place which is clean around the analyzer 6 A place...

Page 22: ...unting angle of companion flange should be adjusted accurately 3 Secure sufficient space for installation which permits easy operation 4 Scaffold will be required for both the receiver unit and the tr...

Page 23: ...nstallation Fixtures list 1 Cable between receiver unit and control unit for calibration 2 Cable between receiver unit and transmitter unit for calibration 3 Calibration gas cell 4 Power supply drum o...

Page 24: ...time about 90 minutes of warm up time is necessary after power ON to perform zero calibration P 43 to 46 7 Record the light quantity value when zero calibration is performed output value of the probe...

Page 25: ...the manual analysis perform matching 17 Make a setting of item to be output in reference to 6 8 Selecting analog output 18 Make a analog output setting in reference to 6 9 Fine adjustment of analog ou...

Page 26: ...ence light quantity value of light axis adjustment which is performed after the equipment is attached to a companion flange Factory set voltage is described on a nameplate which is labeled on covers...

Page 27: ...to turn them slightly loosen the anchor nut first approx one tenth rotation Fig 4 6 3 When you fasten B flange When angle is determined after adjustment in 1 or 2 turn them in the direction opposite t...

Page 28: ...p the fixing bolt tightly as the figure below the place where the bolt is screwed up in clines to the right and the laser beam points upward 3 If you loosen the fixing bolt as the figure below the pla...

Page 29: ...o operate the angle adjustment unit 2 so that the pointer s light hits the center of the target 5 Then using the attached hexagonal socket screws to fix the laser pointer to the angle adjustment unit...

Page 30: ...sure to set the R1 4 sealing plug ZZP ZSSTK738114P7 on the drain outlet of the mist separator Note 2 Diameters for CO O2 meter DI O A O A I Connector Cable length 200mm 7 Waterproof grand Internal dia...

Page 31: ...r to Figure below of the re ceiver unit or the transmitter unit 2 Mount Receiver box or transmitter box on Angle adjustment unit so that the cable receptor is posi tioned down Be careful not to touch...

Page 32: ...eiver unit and transmit ter unit Both ends of it are fitted with a female 16 pin connector waterproof type The connector has no polarity Fix the Cable between receiver unit and transmitter unit to the...

Page 33: ...between receiver unit and control unit Both ends of it are fitted with a female 10 pin connector waterproof type The connector has no polarity Perform wiring in the way that the cable between receive...

Page 34: ...eiver box similarly Do not loosen more than one bolt or loosen fixing bolt and nut widely in both cases of adjustment Light axis may deflect again 4 Move the transmitter unit and the receiver unit fro...

Page 35: ...on in 2 4 4 If output is not as much as that measured at the time of calibration even if output is at its maximum on the transmitter side fix the box at the maximum output angle temporality and adjust...

Page 36: ...e of retightening in the procedure in 4 11 Adjustment of light quantity When each retightening is finished perform fine adjustment by pressing with this bolt When you use the fine adjustment screw set...

Page 37: ...inal The ground cable should be longer than the N Lline Flame resistance 600V 1 25mm2 16AWG or more Cable out diameter size B10mm or less AC cable M4 screw terminal L AC POWER N V SOURCE PE Note Use t...

Page 38: ...a display error Power supply and output signal lines should be separated from each other As the wire is connected to each terminal use a solderless terminal for M4 As the solderless terminal is used f...

Page 39: ...move the cursor change the selected item and decrease numeral value 2 Escape key Used to return to a previous screen or cancel the setting in midway 5 Side key Used to move the cursor and change numer...

Page 40: ...rm Setting Span Calibration Display Output 1 AO Adjustment AI Adjustment Zero Span Coefficient Setting Parameter Setting Alarm Log AO Select Output Hold Password Analyzer Information Parameter Setting...

Page 41: ...ment screen appears when the power is turned ON On the MEASURE screen measurable component alarm conversion measurable component and analog input are displayed beginning at the top When more than five...

Page 42: ...9 Analog input Displays the analog input value which was set at the Analog Input screen Analog input to be displayed are Temperature Pressure Velocity O2 and H2O They are not displayed when selecting...

Page 43: ...Output Hold Used for holding analog output 6 Parameter Setting Used for setting each parameter 7 Display Output setting Used for setting the measurement value to be displayed on the Meas urement scre...

Page 44: ...The alarm of Low Light Transmission is activated after 1 minute continuation Though it takes 6 minutes from just after the power on 5 3 3 1 Name functions 1 Alarm occurrence date Displays the date whe...

Page 45: ...arm Record Date Day Day Repair Alarm 04 01 11 23 Over H Limit 1 03 29 23 14 LD Temp Error 31 03 23 Select Delete HC HC 03 25 15 23 AI Under 28 13 28 Press 03 20 04 41 Low Air Purge Air 02 18 00 08 Hig...

Page 46: ...00 08 High Gas Temp 20 09 44 Temp 01 12 11 22 Low Light Trans 27 08 11 HC All Delete 2006 04 01 12 00 00 Alarm Record Date Day Day Repair Alarm 04 01 11 23 Over H Limit 1 03 29 23 14 LD Temp Error 31...

Page 47: ...00 08 High Gas Temp 20 09 44 Temp 01 12 11 22 Low Light Trans 27 08 11 HC All Delete 2006 04 01 12 00 00 Alarm Record Date Day Day Repair Alarm 04 01 11 23 Over H Limit 1 03 29 23 14 LD Temp Error 31...

Page 48: ...in an envi ronment with high dust Light quantity is insufficient in an envi ronment with high water vapor Contamination of window and conden sation are caused by insufficient air purge Optical path is...

Page 49: ...lower than the temperature fixed value set at the Analog Input screen Under L Limit 1 It is reported when Analog Output Alarm Record is set to Under L Limit 1 or Over H L Limit 1 on the Alarm Setting...

Page 50: ...Teflon tube etc Several m 10 8 or more Joint Rc1 8 2 For calibration gas cell Flow meter 1 2L min or more Thermometer 1 4 to 20mA output for temperature correc tion required for range Hcl and NH3 Pre...

Page 51: ...nit or the Cable between receiver unit and control unit is fixed and not usable provide them for calibration 5 Wiring should be performed as following figure Stack Transmitter box Receiver box Hexagon...

Page 52: ...the control unit of Analog Input 8 Use a thick and short exhaust tube as much as possible 9 Refer to 6 7 1 Setting of 4 to 20mA DC Input in case of gas temperature for setting of Analog Input 10 When...

Page 53: ...ength of calibration gas cell Standard cell length is 1000mm When the range is low con centration the length of calibration gas cell can be either 500mm or 200mm 8 See the Meas and make sure the indic...

Page 54: ...creen 4 Point the to Component and press the key 5 Press the key or the key to select the Dust 6 Point the to Cell Length and press the key 7 Enter the optical path lengths of the stack to be measured...

Page 55: ...avoid inhaling of the exhaust gas 4 When pipe connection and exhaust are completed allow the gas to flow 5 Flow of sampling gas should be 1 5L min Note Use a new regulator as much as possible Do not u...

Page 56: ...tion intensity is equal to that of where the gas concentration is 100ppm and the measured optical path lengths is 1m 2m 50ppm Cable between receiver unit and transmitter unit for calibration Cable bet...

Page 57: ...the Measurement screen and enter the value When the range is low concentration the value may be affected by gas temperature 12 Enter the value in Gas Press in the same manner of Gas Temp 13 See the va...

Page 58: ...pre set value to when the Sampling Time pre set value elapses After the input value is set make sure to press Start key 2 Measuring the average dust concentration during the period from when Start key...

Page 59: ...period in Sampling Time 2006 04 01 12 10 00 Span Cal Start Cal Finish 500 mm 1000 00 vol 0025 C kPa 00 00 100 00 vol Range 1 2006 09 01 Dust Component Cal Range Cell Length Cal Gas Value Meas Gas Tem...

Page 60: ...key will be displayed If you do not press Finish key measument will be stoped automatically and the average concentration of specified sampling period starting from Start Time will be displayed 2006 0...

Page 61: ...ed from manual analy sis to Cal Gas Value 2006 04 01 12 10 00 Span Cal Start Cal Finish 500 mm 1000 00 vol 0025 C kPa 00 00 100 00 vol Range 1 2006 09 01 Dust Component Cal Range Cell Length Cal Gas V...

Page 62: ...art Cal Finish 500 mm 1000 00 vol 0025 C kPa 00 00 100 00 vol Range 1 2006 09 01 Dust Ave Dust Value Component Cal Range Cell Length Cal Gas Value Meas Gas Temp Gas Press LastCal Day Span Calibration...

Page 63: ...lysis e g When H2O measuring time is at 9 00 to 9 30 it is assumed that average value of H2O concentra tion is in 30 minutes 3 Calculate that coefficient of span calibration is given by following form...

Page 64: ...n press 2007 04 13 12 10 00 Menu Zero Calibration Alarm Log Display Output Pasword Parameter Setting Input Signal Span Calibration Alarm Setting AO Select Output Hold ENT 2007 04 13 12 10 00 Span Cal...

Page 65: ...th and then press 2007 04 13 12 10 00 Span Cal Start Cal Finish mm vol 0015 C kPa 01 00 5 00 vol Range 1 2006 09 01 H2O 1500 7 500 Component Cal Range Cell Length Cal Gas Value Meas Gas Temp Gas Press...

Page 66: ...tart Cal Finish mm vol C kPa 5 00 vol Range 1 2006 09 01 H2O 1500 7 50 0025 00 00 Component Cal Range Cell Length Cal Gas Value Meas Gas Temp Gas Press LastCal Day Span Calibration ENT 2007 04 13 12 1...

Page 67: ...en tration Select OFF to invalidate Note When ON is selected High Low limit setting Analog Output Alarm Record cannot be set Point the to H Limit or L Limit by the key and the key and press the key EN...

Page 68: ...et ting of the L Limit value Point the to H Limit to set the H limit val ue and point L Limit to set the L Limit value and then press the key ENT Alarm Setting H Limit ON Range1 15 ppm Range2 ppm L Li...

Page 69: ...mit ppm ppm Hysteresis FS Analog Output Range2 H Limit Alarm Record 50 00 30 00 10 00 00 00 Range1 Range2 2006 04 01 12 00 00 Alarm Setting H Limit ON Range1 15 ppm Range2 ppm L Limit ppm ppm Hysteres...

Page 70: ...e2 Note When OFF is set to the ON OFF setting of the alarm value Analog Output Alarm Record cannot be set Select ON again The alarm output which is H Limit L Limit or H L Limit cannot be per formed fo...

Page 71: ...t possible chattering of the alarm output near the alarm setting value Point the to Hysteresis by the key or the key and press the key ENT ENT Alarm Setting H Limit ON Range1 15 ppm Range2 ppm L Limit...

Page 72: ...n the value exceeds the H Limit After alarm output is turned ON and output is reduced by hysteresis set from H Limit the alarm is turned OFF ENT ENT Alarm Setting H Limit ON Range1 15 ppm Range2 ppm L...

Page 73: ...measurable component to hold output by the key or the key and press the key Select either Last Meas or Pre set by the key or the key Press the key to validate the setting ENT 2006 04 01 12 00 00 HC 20...

Page 74: ...the value corre sponding to 2ppm is output regardless of the measurement value O2 Conversion Hold Last Meas Holds the measurement value for which Last Meas is determined by the key and the value calc...

Page 75: ...nput DI3 terminal option The value to hold output is Last Meas only Apply rectangular waveform pulse width 2 0 sec or more to a remote hold input terminal to hold analog output Applying it again cance...

Page 76: ...of stack lengths Enter the lengths of the stack where the receiver unit and the transmitter unit are attached It does not include the lengths of companion flange This value has a direct effect on the...

Page 77: ...mm 01000 HC Min 01 12 OFF ON 09 07 01 01 00 00 00 Min Path lengths Average Period cv O2 Reset Avg Gas Key Lock Disp OFF Date Time Parameter Setting 2006 04 01 12 00 00 mm HC Min 01 12 OFF ON 09 07 01...

Page 78: ...60 minutes When it is less than the moving average time output the moving av erage value during that period Change the setting to reset the average value The value is reset when pressing the key Aver...

Page 79: ...measurable component to be reset by the or the key When there is only one component the component is fixed Press the key to reset the average value 2006 04 01 12 00 00 mm 01000 HC Min 01 12 OFF ON 09...

Page 80: ...Setting can not be displayed even if the item is selected and the key is pressed on the Menu screen Any items except Key Lock cannot be vali dated even if the item is selected and the key is pressed o...

Page 81: ...o ON by the or the key and press the key Change the numeric value by the key or the key and move the digits by the key Press the key to validate the set input value 2006 04 01 12 00 00 mm 01000 HC Min...

Page 82: ...verage value for each measurable component The setting is reflected on the display on the Measurement screen O2 conversion value can be arbitrarily selected even if the previous measurement value is s...

Page 83: ...the moisture meter is provided input its output signal 4 to 20mA DC output to the analog input of the control unit and set the range referring to 6 7 1 Setting of 4 to 20mA DC Input in case of gas tem...

Page 84: ...OSetting Range1 0 50 0 ppm Range2 0 1000ppm Range Control Remote Inst Inst Dry cv 2006 04 01 12 00 00 Gas HC Avg Inst Wet Wet Dry Range1 0 50 0 ppm Range2 0 1000ppm Display AOSetting Range1 0 50 0 ppm...

Page 85: ...setting fixed by the key does not return to the previous setting even if the cursor is moved by the key 5 ENT 5 Display AOSetting Range1 0 50 0 ppm Range2 0 1000ppm Range Control Remote Inst Avg Dry...

Page 86: ...ting of 4 to 20mA DC Input in case of gas tempera ture The sensor signal of the thermometer 4 to 20mA output is connected to Ch1 or Ch2 of the AI terminal of the control unit If an AI expansion board...

Page 87: ...ol 20 00 00 00 21 00 vol 050 0 000 0 100 0 Gas Flow m s 02 00 00 00 20 00 Air Purge kPa No 000 0 100 0 005 0 Alarm 4mA 20mA Under 2006 04 01 12 00 00 Fixed Fixed Fixed Fixed ENT ENT Analog Input GasPr...

Page 88: ...from the set value of input signal for the oxygen O2 analyzer The calculation formula is as follow Conversion C 21 On 21 Os Cs C Converted concentration Os Measured O2 concentration On Standard O2 con...

Page 89: ...ress the key to validate the set input value Analog Input GasPress kPa Fixed Fixed 4mA 20mA 00 00 00 00 10 00 Gas Temp 0027 0000 0500 vol 20 00 00 00 21 00 vol 050 0 000 0 100 0 Gas Flow m s 02 00 00...

Page 90: ...ut Select Air Purge by the key or the key Press the key to move the cursor to Channel setting Select the channel CH1 or CH2 connected to AI terminal by the key or the key and press the key Analog Inpu...

Page 91: ...Fixed Fixed 4mA 20mA 00 00 00 00 10 00 Gas Temp 0027 0000 0500 vol 20 00 00 00 21 00 vol 020 0 000 0 100 0 Gas Flow m s 02 00 00 00 20 00 Air Purge kPa 000 0 100 0 005 0 Alarm 4mA 20mA Under 2006 04 0...

Page 92: ...ted When there is O2 conversion output O2 Conversion is also selectable Select the analog terminal to be output by the or the key Press the key to move the cursor to Output Component setting Select th...

Page 93: ...2 00 00 mm 01000 HC Min 01 OFF ON 09 06 04 01 00 00 00 Min Path lengths Average Period Reset Avg Gas Key Lock Disp OFF Date Time Parameter Setting 2006 04 01 12 00 00 mm 01000 HC Min 01 OFF ON 09 Min...

Page 94: ...the key to move the cursor to Password Press the key to display the Factory Menu screen Point the cursor to Analog Output Tuning by the key or the key and press the key 2006 04 01 12 00 00 Menu Zero C...

Page 95: ...the Span column change the item of Ana log fine adjustment to Span output and make adjustment in the same way as Span 2006 04 01 12 00 00 FACTORY MENU Output Analog Output 1 Analog Output 2 Analog Out...

Page 96: ...een the receiver unit and the control unit If the power is turned on in the state above Connection Error alarm is generated and Analyzer faulty alarm is then generated After you confirm the alarm outp...

Page 97: ...s not remain Transmitter unit Receiver unit Atmospheric release N2 cylinder Standard gas cylinder SV3 SV1 SV2 Control unit Check cell Laser gas analyzer with check cell ZSS Sequencer Remote check inpu...

Page 98: ...een the concentration output at this time and 50ppm T Time Concentration 0 You can not check the zero point while the gas to be measured remains in the stack Concentration output In order to check whe...

Page 99: ...which was obtained by 6 11 2 Concentration of the gas which is fed to the check cell and gas concentration fluctuation to the check cell 4 After the indication value is stabled obtain the measured va...

Page 100: ...ent Only qualified personnel who have been trained by Fuji Electric should perform maintenance works Do not extend the cycle of replacement parts Note that any troubles resulting from failure to repla...

Page 101: ...following figure Replace the O ring and silicon packing A annually Note When replacing packing be careful not to touch the lenses of the transmitter box and the receiver box Note Use a dry cloth micr...

Page 102: ...Is the device installed in a place where frequency fluctuates widely between 20 and 40Hz Yes Contact the manufacturer Counter measures should be taken such as altering the resonance frequency by chang...

Page 103: ...igh as the alarm setting or is it purged No Increase the air purge pressure and perform air purge 10 Not operating even with the power turned on 1 Is the input voltage lower than the voltage rating Ye...

Page 104: ...f ZSS are contained difference is made in concentration 12 The measured value is over the range 1 Is the measuring gas is a concentration value which is over the range Yes Check it conducting manual a...

Page 105: ...temperature 10 vol 50 vol 1200 C or less 2 laser 2 componen t analyzer CO O2 Air purge CO 200 ppm 2 vol 400 to 1200 C Air O2 25 vol 100 vol CO O2 High temperature CO 200 ppm 2 vol 1200 C or less N2 O...

Page 106: ...ess 0 to 1V DC 100k or more Output measurement value and O2 correspondingvalue Aver age value and instantaneous value are switchable by the settings 20 Analog input 4 to 20mA DC 6 Measured gas pressur...

Page 107: ...alue is started from the initial state by applying rectangular wave voltage pulse width 2 sec or more to the input terminal of the average value resetting Output is reset by in putting and restarted b...

Page 108: ...or the environment where dust 1g Nm3 or more or water 25vol or more exists Prevention of dust deposition or dew condensation due to increase in air purge flow rate is required 8 Dust Standard 5 g Nm3...

Page 109: ...102 INZ TN7ZSS E APPENDIX 2 CODE SYMBOLS...

Page 110: ...Receiver unit Transmitter unit Control unit Cable between receiver unit and transmitter unit specified length Cable between receiver unit and control unit specified length Standard accessory set instr...

Page 111: ...H8049P1 9 R1 4 stopper plug for mist separator 1 ZZP ZSSTK738114P7 10 Flow meter 20 to 100L min 4 1 ZZP ZSSTK7N4624P1 Flow meter 4 to 50L min 4 1 ZZP ZSSTK7N4624P2 Flow meter 30 to 300L min 4 1 ZZP ZS...

Page 112: ...Transmitter unit 5 IR card Invisible light Laser beam visible Transmitter unit Receiver unit Atmospheric release N2 cylinder Standard gas cylinder SV3 SV1 SV2 Control unit 6 Check cell Laser gas anal...

Page 113: ...g system diagram Box Filter regulator Drain outlet 10 piping not supplied by us Receiver purge outlet Transmitter purge outlet Mist separator Flow meter Parts for air purge Pipe with external diameter...

Page 114: ...INZ TN7ZSS E 107 13 BNC cable for optical axis adjustment...

Page 115: ...lied Be sure to prepare instrument air or N2 gas Instrument air should not contain oil and mist If mixed air such as oil and mist contained is used contamination occurs in the pipe of flow meter and p...

Page 116: ......

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