INFRARED GAS ANALYZER SERVICE MANUAL
Contents
1. FO Instruction Manual INFRARED GAS ANALYZER SERVICE MANUAL TYPE ZRH m Fuji Electric Systems Co Ltd INZ TN507285b E PREFACE You are now proud owner of the Fuji s Infrared Gas Analyzer Type ZRH This is the service manual of the non dispersion type infrared gas analyzer ZRH The maintenance check repair and adjustment procedures of this analyzer are mostly covered by the section of maintenance check and troubleshooting in the instruction manual For those procedures therefore reference should be made primarily to the instruction manual and the service manual should be read together in a supplementary way Hence this service manual contains what cannot be followed by the instruction manual i e items related to parameter setting in adjustment modes particularly those due to changes in the specifications and the optical system such as the detector and cell adjustment of amplifier gain change of temperature compensation values change of range parameters adjustment of linearization zero and span calibrations at occurrence of error and readjustment of analog output signal 0 to 1V 4 to 20 mA detailed description of error codes and remedial measures against errors and contents of adjustment modes and their operating methods required for readjustment and remedy Before using be sure to read this instruction manual carefully to ensure cor2. key all indications become 4H e When pressing ENT key all indications become 4 55 e When pressing ZERO key all indications become amp E E e When pressing SPAN key all indications become 3 313 e When pressing CAL key all indications become B amp e When pressing the key of 1st component all indications become eeu e When pressing the key of 1st component all indications become RE When pressing the key of 2nd component all indications become ug When pressing the Q key of 2nd component all indications become 18 8 17 Mode No 18 Count value display Function Displaying the count value of A D converted input signals from each sensor of 1st component 2nd component and temperature Contents o LLLI Count value of Count value of 1st component temperature sensor Saw nin Q None indicated Count value of 2nd component On entry into this mode display becomes as shown above and each count value is indicated The indicated value is 1 10 of the actual count value 19 9 SETTING TIME CONSTANT Function Contents CAL E ju JN JN FUNC Measurement mode EN am Time constant 20
3. the unit value at the lowest digit of range display should be 0 1 FS or less 8 7 Mode No 6 Setting upper limit of range Function Setting the upper limit of a measuring range The set parameter is displayed in the sub display of measurement mode For instance when entering 0500 the sub display of measurement mode indicates 500 The position of decimal point is settable in mode 7 Operating procedure ru pe Bau AN opt Upper limit of range ange No Q 111 1 0 meme x M Oinrange No should be ignored in setting 12 1 2 3 4 5 6 On entry into this mode the display at left appears Select the desired range No by or key The range should be larger in the order of range numbers Press gt key and the leftmost digit of sub display will blink When pressing the key again the blinking position will shift to the next digit at right Blinking numeral can be changed by key So enter an appropriate value After completion of entry at all digits and for all ranges ENT key for determin ing your selection and indication will stop blinking The 1st and 2nd components are alternately selectable by COMP Key Procedure remains the same for the 2nd component 8 8 Mode No 7 Setting the decimal point position
4. and indication will stop blinking jo Han When PP is selected sub display turns to 0001 When Vol is selected sub display turns to LII o 6 The Ist and 2nd components are alternately selectable by COMP key ENT Procedure remains the same for the 2nd component O Li IL f J ILE L 0001 ppm 0000zVol 6 Range number is displayed in 2 1 0 for a dual range analyzer and in 1 0 0 for a single range analyzer Indication of 0 should be ignored because it does not concern setting 10 Table 8 1 lists the parameters to be set in modes 5 6 and 7 for each range value Range Table 8 1 Range setting Parameter in mode 5 Parameter in mode 6 Parameter in mode 7 Actual range display 0 to 500ppm PP 0001 5000 0001 500 0ppm 0 to 1000ppm PP 0001 1000 0000 1000ppm 0 to 2000ppm PP 0001 2000 0000 2000ppm 0 to 5000ppm PP 0001 5000 0000 5000ppm 0 to 1 0000 1000 0003 1 000Vol 0 to 2 0000 2000 0003 2 000Vol 0 to 5 0000 5000 0003 5 000Vol 0 to 10 0000 1000 0002 10 00Vol 0 to 20 0000 2000 0002 20 00Vol 0 to 50 0000 5000 0002 50 00Vol 0 to 100 0000 1000 11 0001 100 0Vol For non standard range not included in the above list
5. Function Setting the position of decimal point for the range value displayed on the sub display Operating procedure Oal B jl ai Position number Range No of decimal point P 0 3 Ha e ZN O ELM in range No should be ignored in setting 1 2 3 4 5 6 On entry into this mode the display at left appears Select the desired range No by or key gt key and the position number of decimal point will blink The position number can be changed by key Select the desired number For relationship between the position num ber and decimal point position refer to Table 8 2 Press ENT selection and indication will stop blinking key for determining your The 1st and 2nd components are alternately selectable by COMP key Procedure remains the same for the 2nd component Table 8 2 Relationship between the position number and decimal point position Position of decimal point Position No of decimal point This decimal point is not indicated 13 8 9 Mode No 10 Setting zero point temperature compensation table Function Setting the quantity of temperature compensation for zero point at 5 C 25 C and 45 C According to this setting temperature at the zero point wi
6. for informing the operator about occurrence of the error Error indication can be erased by pressing ENT key 8 ADJUSTMENT MODES In these modes various parameters are to be set at adjustment in the factory Adequate attention should be paid when changing the value set in each adjustment mode Each mode and its operation method are explained as follows The adjustment modes are listed below Main display System reset rm rr Sub display ru lu rm pm Clearing zero span calibration Setting number of ranges Number of ranges c x Setting engineering units Unit No q E Setting upper limit of range Upper limit rrt a m Setting the decimal point position Decimal point position No Setting zero point temperature Numeric value compensation table equivalent to temperature Compensation value Setting span point temperature Numeric value compensation table equivalent to temperature Compensation value Setting linearization table Y Zero adjustment of external output Adjustment value Span adjustment of external output Adjustment value Setting station No of RS 232C Station No Error cancel a me mim or ru LED key test Count value display Count value Temperature count value 8 1 Entry into Adjustment Mode Operation for entry into the adjustm
7. nas 17 8 15 Mode No 16 Brror cancel needed 17 8 16 Mode No 17 EBD key estan suasana na an bue gel qug rete de eee 18 8 17 Mode No 18 Count value display n aa 19 95 SETTING TIME CONSTANT esee eit bre bite eni yl api eed di 20 vi 1 ADJUSTMENT OF AMPLIFIER GAIN While introducing zero gas into the analyzer measure the voltage between check terminals CP3 and SC on the P C B with a voltmeter Adjust the voltage to 2 3 V 0 2 V by connection of jumpers J1 to J12 and adjustment of VR4 For the 2nd component of a 2 component analyzer connect jumpers J1 to J12 and adjust VR2 so that the voltage between CP3 and SC on the 2nd component P C B becomes 2 3 V 0 2 V Adjust the voltage roughly by jumper wire connections and finely by the variable resistor Listed below is the relationship between jumper wire connections on P C B and gains of analog amplification block Gain No Jumper connection Gl J1 J2 J7 J8 J9 J10 G2 J3 J4 J5 J6 J9 J10 G3 J1 J2 J7 J8 J10 J11 G4 J1 J2 J7 J8 J10 J12 G5 13 14 J5 J6 J10 J11 G6 J3 J4 J5 J6 J10 J12 2 CHANGE OF TEMPERATURE COMPENSATION VALUES Because temperature characteristic depends on each optical unit temperature compensation values need to be updated whenever the optical unit is changed The values can be updated in adjustment mode Nos 10 11 page 14 New values are to be given by the fa
8. procedure Implement the same procedure as in Mode No 10 Setting zero point temperature compensation table 14 8 11 Mode No 12 Setting linearization table Function Setting compensation data for linearizing the output characteristic Data of 14 points including 0 and 100 FS on the calibration curve prepared in the nonlinear status when this mode is set in the linear status is to be set here Operating procedure Y compensation point 91 rt UI a Lt LUL 91 Q1 9 ERES Q1 Q 91 91 X compensation point Toward span point rr p La La La amp Zero point to to t to t to 15 1 2 3 4 5 On entry into this mode the display at left appears Compensation points can be changed over by or Q key A total of 14 points need to be set Input for compensation points should be made in order starting from the zero point At shipment from the factory values 0 5 10 15 20 25 30 40 50 60 70 80 90 and 100 FS have been input for X compen sation points in this order and the values on the calibration curve which correspond to the X points are set for Y compensation p
9. 1 2 3 4 5 This time constant works as a filter by generating a lag time in signal processing thereby enhancing S N ratio Lag time is settable in 5 steps to extend response time Under the key lock display in user mode press CAL key Display shown at left appears Press gt key and time constant display will blink The blinking value is changeable by key Set an appropriate value in consideration of the relationship between fluctuation and response Press ENT key for determining your setting and blinking will stop Fuji Electric Systems Co Ltd Head Office Gate City Ohsaki East Tower 11 2 Osaki 1 chome Shinagawa ku Tokyo 141 0032 Japan http www fesys co jp eng Instrumentation Div International Sales Dept No 1 Fuji machi Hino city Tokyo 191 8502 Japan Phone 81 42 585 6201 6202 Fax 81 42 585 6187 http www fic net jp eng
10. 8 is short circuited or discontinued Connection is incorrect EEPROM 18 is faulty Turn off power supply and then turn it on Check the pattern on PCB Replace Q18 with a new one Digital input value of the sensor signals is less than 100 Digital input value of the sensor signals is more than 61440 Operable but indication is not normal Indication or output may be held Pattern is short circuited or discontinued Operation or part of the A D converter circuit is unsatis factory Reference voltage 5 V or 5 V is abnormal Temperature sensor TMP1 is unsatisfactory Check the pattern on PCB Turn off power supply and then turn it on Check the reference voltage CP1 SC CP2 SC Replace the temperature sensor TMP1 with a new one The calibration coefficient for zero point is outside the allowable range 0 to 16 times Operable but zero calibration cannot be carried out further The calibration coefficient for span point is outside the allowable range 0 to 16 times Operable but span calibration cannot be carried out further Zero gas is not introduced into the analyzer Drift due to internal contamination of measuring cell etc Detector is deteriorated Span gas is not introduced into the analyzer The set value of span concentration is wrong ntroduce zero gas properly Check piping when required Cl
11. a in adjustment mode 12 On the 2nd compo nent implement the same procedure 5 ZERO AND SPAN CALIBRATIONS After linearization setting carry out zero and span calibrations If calibration cannot be carried out due to detection of an error caused by a wide deviation of zero and or span point activate adjustment mode 16 error cancel and then retry calibration 6 ADJUSTMENT OF ANALOG OUTPUTS Analog signal outputs are adjustable by the following methods 1 2 Method of adjusting voltage output Connect a voltmeter between input output terminals 1 and 2 of COMP1 or COMP2 terminal block Adjust the voltage to 0 V 0 05 V in adjustment mode 13 and 1 V 0 05 V in adjustment mode 14 by key setting on the front panel Method of adjusting current output After voltage adjustment in 1 connect a currentmeter between terminals 3 and 4 of COMPI or COMP2 input output terminal block Make indication blink in adjustment mode 13 and adjust the current to 4 mA 0 07 mA Then adjust the current to 20 mA 0 07 mA in adjustment mode 14 by the variable resistors on printed circuit board VR6 and VR7 on the Ist component P C B and and VR5 on the 2nd component P C B Because both VR6 and VR7 VR4 and VR5 affect zero and span each VR pair should be adjusted repeatedly until both zero and span are adjusted satisfactorily 6 1 Internal Layout Shown below are the locations of the PC boards necessary for adjustment a
12. able installation place Install the unit in a place with normal temperature and humidity free from excessive change in temperature and from heat radiation and direct sunlight This unit is designed for indoor installation When it is installed outdoors choose a place where it is not exposed to wind and rain Be sure to use a proper case cover Do not install the unit in a place with vibrations Cleaning ofinstrument Do not use solvents such as benzine thinner etc as it damages the case Use the unit in a place with good environment The unit should be used in a place free from corrosive or combustible gases Be careful with electric shocks The unit should be earthed to avoid electric shocks Key operation Do not use any object with a sharp tip when operating the function keys on the instrument panel CONTENTS Senin dne tendu e tase eu ada oL tu aged ind 1 SAFELY PRECAUTION I se ii CAUTIONS ON USE ereinen aee oe kl L gt ADJUSTMENT AMPEIFIER GAIN 2 1 2 CHANGE OF TEMPERATURE COMPENSATION VALUES 1 3 CHANGE RANGE PARAMETERS 2 nati ote Ote diens 1 4 ADJUSTMENT OF LINEARIZATION ined ieee 2 4 1 Measurement for Calibration Curve 2 5 ZERO AND SPAN CALIBRATIONS ordei into ee
13. ctory 3 CHANGE OF RANGE PARAMETERS A new range is settable in adjustment mode Nos 4 to 7 pages 9 to 13 4 ADJUSTMENT OF LINEARIZATION 4 1 Measurement for Calibration Curve Before measurement turn the linearization setting of analyzer to the nonlinear status to make setting at each point in adjustment mode 12 identical between X and Y 1 Carry out zero and span calibrations in the maximum range Span should be calibrated on the full scale at gas concentration 90 or more of full scale 2 Introduce gas at 0 5 1 5 2 5 3 5 4 5 and 5 5 of the span gas concentration into the analyzer by means of a gas divider and read the indicated value at each concentration value 3 Based on the result of measurement prepare a graph of calibration curve Fig 4 1 Y FS 100 Yn Yio 100 FS Indicated value P Vl ku 0 1 5 2 5 3 5 4 5 5 5 0 51015202530 40 50 60 70 80 90 100 X Gas concentration FS Fig 4 1 Fig 4 2 Take compensation points P1 to P14 P1 and P14 representing and 100 on the calibration curve as shown in Fig 4 2 and calculate the X scale values of Y2 to Y13 The data to be input is listed below Calculation of Table Data Break point on Y axis data X axis data Break point on Y axis data X axis data segmented line FS FS segmented line FS 96FS Then input the above table data X and Y axis dat
14. e eee 3 6 ADJUSTMENT OF ANALOG OUTPUTS 3 6 1 Internal Eayout ete ene eae Rn bee ER See eae 4 ds ERROR CODES Su u Sa anu e ena que dte a eee caes 5 ADJUSTMENT MODES e e 6 8 1 Entry into Adjustment Mode ssc itt i puse Eea E ed dee 7 8 2 Entryinto d Specific Mode ciega me ecd od eR Ee died 8 8 3 Mode No 0 System reset return to measurement mode 8 84 Mode No 1 Clearing zero span calibration seen 9 8 5 Mode No 4 Setting number of ranges sess nennt nre 9 8 6 Mode No 5 Setting engineering units 10 8 7 Mode No 6 Setting upper limit of range eren 12 8 8 Mode No 7 Setting the decimal point position na 13 8 9 Mode No 10 Setting zero point temperature compensation table 14 8 10 Mode No 11 Setting span point temperature compensation table 14 8 11 Mode No 12 Setting linearization table sese 15 8 12 Mode No 13 Zero adjustment of external output eese 16 8 13 Mode No 14 Span adjustment of external output sese 16 8 14 Mode No 15 Setting station No of RS 232C
15. ean the cell Replace the detector with a new one ntroduce span gas properly Match span concentration setting with the concentra tion of the span gas to be used Clear zero span calibration in adjustment mode 1 The necessary correction value for zero point calibration exceeds 50 of the range value Operable but calibration is impossible The necessary correction value for span point calibra tion difference between indicated value and the set value for span gas concentration exceeds 50 of the range value Operable but calibration is impossible Zero gas is not introduced into the analyzer Drift due to internal contamination of measuring cell etc Detector is deteriorated Detector voltage is abnor mal Span gas is not introduced into the analyzer The set value of span concentration is wrong ntroduce zero gas properly Check piping when required Clean the cell Replace the detector with a new one Check detector voltage SV1 SC SV2 SC ntroduce span gas properly Match span concentration setting with the concentra tion of the span gas to be used Clear zero span calibration in adjustment mode 1 Even if an error occurs the analyzer will return to normal operation so far as the cause of the error is eliminated However indication of an error code remains even after the analyzer restores normalcy This is
16. ent mode is described below In the measurement mode press and Qkeys simultaneously With the keys held down press FUNC key For 1 component analyzer For 2 component analyzer dd FUNC COMP gt ENT ZERO SPAN CAL Func feom gt A ENT ZERO SPAN oat On entry into the maintenance mode the following display appears JE o When you press key twice under the above display system resetting is applied and measure ment mode returns 8 2 Entry into a Specific Mode B Any mode No of 0 to 18 Under this display select the number of the desired mode SPAN key advances display to the next mode No CAL key returns display to the previous mode No key and the analyzer will enter the mode of the selected After selecting the number press ENT number For exit from each mode press FUNC key and the above display will reappear 8 3 Mode No 0 System reset return to measurement mode Function Returning the analyzer from adjustment mode to measurement mode and resetting the program for adjustment mode Operating procedure 1 Onentry into this mode the displa
17. he display at left appears Press gt key and station No display will blink Blinking numeral can be changed by key within 0 to 9 Press ENT setting key for determining your When this mode is turned on error detection due to self diagnosis is disabled When turning off power supply and then turning it on this mode is automatically turned off In particular case where an error occurs due to a wide correction in zero or span calibration this mode should be turned on Because no error will occur calibration can be performed O O 1 an 3 4 17 On entry into this mode the display at left appears Press gt key and n a F F display will blink Press key for selection of the 9 or o F F status Press ENT key for determining your selection and blinking will stop 8 16 Mode No 17 LED key test Function Checking keys and LEDs on the display panel for normal operation Operating procedure J j 1 Onentry into this mode the display at left 151 EHEE appears When pressing each key the corresponding code is displayed as shown below When pressing COMP key all indications become e When pressing gt key all indications become 3 3 3 e When pressing
18. k Press key and numeral will change So select the desired number of ranges Note When the second component is provided 4 5 6 The first and second components are select able alternately by COMP key Set the number of ranges for the 2nd compo nent referring to steps 2 and 3 ENT key for determining your selection and indication will stop blinking Press Because the maximum number of ranges is 3 a value larger than 0003 cannot be accepted 8 6 Mode No 5 Setting engineering units Function Selecting the unit of measuring range Vol or ppm Range value is to be set by combination of modes 5 to 7 Table 8 1 Operating procedure J 7l O M 1 Onentry into this mode the display at left limp Baa appears Symbol of 2 Select the desired range No by key Range No engineering unit The range should be larger in the order of range numbers Q 3 Press key and Vol or PP will blink in the sub display area O 4 Select VoL or PP by changing display by ne E Fi r7 o Hur key VoL Vol l gt PP ppm 5 Press ENT key for determining your selection
19. leaking gas contains a toxic component there is a risk of serious accident being induced Also if combustible gas is contained there is a danger of explosion fire or the like occurring Connect pipes correctly referring to the instruction manual Exhaust should be led outdoors so that it will not remain in the locker and installation room Exhaust from the analyzer should be relieved in the atmospheric air in order that an unnecessary pressure will not be applied to the analyzer Otherwise any pipe in the analyzer may be disconnected to cause gas leakage For piping use a pipe and a pressure reducing valve to which oil and grease are not adhering If such a material is adhering a fire or the like accident may be caused Caution on wiring A CAUTION Wiring is allowed only when all power supplies are turned off This is required for preventing a shock hazard Enforce construction of grounding wire by all means If the specified grounding construction is neglected a shock hazard or fault may be caused Wires should be the proper one meeting the ratings of this instrument If using a wire which cannot endure the ratings a fire may occur Use power source that matches the rating of the unit Use of power source out of rating may cause fire Caution on use When handling the standard gas such as calibration gas read the instruction manual of the standard gas carefully and use the gas correctly Avoid continuous o
20. ll be compensated As data set numeric values 12 5 37 5 and 54 2 for the X axis main display and the compensation value corresponding to each temperature on the X axis for the Y axis sub display Operating procedure X axis i i i Mode 1 Onentry into this mode the display at left appears Se CL O 2 There are 3 compensation points to be input Change over compensation points by or key Setting is required in order starting from the smallest X axis value 3 Press gt key and the leftmost digit of main display will blink When pressing the key 1 1 E again the blinking position will shift to the AR J Lt next digit at right until the right end of sub display is reached l t Q 4 Blinking numeral can be changed by key So enter an appropriate value E O L rig r1 5 Press ENT key for determining your selection and indication will stop blinking 6 The 1st and 2nd components are alternately selectable by key Procedure remains the same for the 2nd component 8 10 Mode No 11 Setting span point temperature compensation table Function Setting the quantity of temperature compensation for span point at 5 C 25 C and 45 C Operating
21. nd component by COMP key and implement the same procedure While observing the output adjust it roughly by J key first and then finely by or Q key 8 13 Mode No 14 Span adjustment of external output Function Adjusting the span point of analog output While observing a digital voltmeter match the span point 1 V point as in mode 13 1 Onentry into this mode the display at left appears l1 2 The subsequent steps are the same as in i i d IA 4 m a mode 13 _ 3 Also carry out adjustment on the 2nd com Span adjustment value Operating procedure ponent Current output 4 to 20 mA should be adjusted by the variable resistor on PCB in mode 13 14 Refer to Adjustment of analog outputs in section 6 16 8 14 Mode No 15 Setting station No of RS 232C Function Operating procedure Setting the number used for the personal computer to recognize the analyzer in data read write operations between them through RS 232C interface Therefore data exchange through communication cannot be made unless the relevant number coincides with the station number called from the personal computer side O 1 2 mt rir paaa d Station No 4 Any value larger than 9 cannot be accepted 8 15 Mode No 16 Error cancel Function Operating procedure On entry into this mode t
22. nd those of the check terminals and VRs on the boards A CAL input output PCB 1st component input output PCB 2nd component input output PCB Display PCB dr nem 1st component PCB 2nd component PCB E A CAL input output PCB wif 2nd component input output PCB 1st component input output PCB diii itg Optical unit 1st component PC IHH 2nd component lt a De os Display PCB ea Optical unit ZRH1 2 type ZRH3 type CP3 CP8 CP9 VR6 VR7 Ve Vss wee inm ae VR3 E ere oe of 1st component 2 VR1 VR2 VR4 VR5 E ob vs i 2nd component PCB 7 ERROR CODES Error codes corresponding errors causes and remedies are listed below Error code RAM write or read operation is abnor mal Condition of analyzer Inoperable unless error is eliminated Possible cause Program does not run normally CPU Q14 is faulty Check and remedy Turn off power supply and then turn it on Replace Q14 with a new one EEPROM write or read operation is abnormal Inoperable unless error is eliminated Program does not run normally The pattern between CPU Q14 and EEPROM Q1
23. observed Those safety precautions are ranked 2 levels DANGER and CAUTION Warning amp Symbol Meaning Wrong handling may cause a dangerous situation in which there is a risk of death or heavy injury Wrong handling may invite a dangerous situation in which there is a possibility of medium level trouble or slight injury or only physical damage is predictable This unit is not an explosion proof type Do not use it in a place with explosive gases to prevent explosion fire or other serious accidents For installation observe the rule on it given in the instruction manual and select a place where the weight of gas analyzer can be endured Installation at an unsuited place may cause turnover of fall and there is a risk of injury For lifting the gas analyzer be sure to wear protective gloves Bare hands may invite an injury Before transport fix the casing so that it will not open Other wise the casing may be separated and fall to cause an injury The gas analyzer is heavy It should be transported carefully by two or more persons if manually required Otherwise body may be damaged or injured During installation work care should be taken to keep the unit free from entry of cable chips or other foreign objects Other wise it may cause fire trouble or malfunction of the unit Caution on piping In piping the following precautions should be observed Wrong piping may cause gas leakage If the
24. oints Press gt key and the leftmost digit of main display will blink When pressing the key again the blinking position will shift to the next digit at right On reaching the right end of main display blinking shifts to the left end of sub display Blinking numeral can be changed by So enter an appropriate value key After setting X and Y data of all compensa tion points press ENT key for determina tion When the second component is provided press COMP key to blink display of this component and implement the same proce dure as above 8 12 Mode No 13 Zero adjustment of external output Function Adjusting the zero point 0 V point of analog voltage output Output will vary in response to a numerical change in this mode with a digital voltmeter connected to output So match output with the zero point 1 Onentry into this mode the display at left appears 2 Press gt key and the leftmost digit will x x ai Lilo I n blink When pressing the key again the lt n blinking position will shift to the next digit Zero adjustment value at right Operating procedure 3 Blinking numeral can be changed by key 4 Carry out fine up down adjustment by key value at the 1st digit will change 5 Press ENT key for determining your setting 6 Move on to the 2
25. peration with the casing drawn out During operation avoid opening the casing and touching the internal parts Otherwise you may suffer a burn or shock hazard lil Caution on maintenance and check 0 DANGER When doors open during maintenance or inspection for adjusting the optical system etc be sure to purge sufficiently the inside of the gas analyzer as well as the measuring gas line with nitrogen or air in order to prevent poisoning fire or explosion due to gas leaks A CAUTION Before working take off a wrist watch finger ring or the like metallic accessories And never touch the instrument with a wet hand Other wise you will have a shock hazard If the fuse is blown eliminate the cause and then replace it with the one of the same capacity and type as before Otherwise shock hazard or fault may be caused Others AN CAUTION If the cause of any fault cannot be determined despite reference to the instruction manual be sure to contact your dealer or Fuji Electric s technician in charge of adjustment If the instrument is disassembled carelessly you may have a shock hazard or injury Do not use a replacement part other than specified by the instrument maker Otherwise adequate performance will not be provided Besides an accident or fault may be caused Replacement parts such as a maintenance part should be disposed of as incombustibles iv CAUTIONS ON USE Select a suit
26. rect installation operation and maintenance of the infrared gas analyzer Note that incorrect handling may lead to trouble or personal injury The specifications of this infrared gas analyzer are subject to change for improvement without prior notice Do not attempt to modify the infrared gas analyzer without permission Fuji is not responsible for any trouble caused by modification without permission After reading be sure to keep this manual in a place where it can easily be seen by the operator We hope that this manual be helpful for you to make prompt and appropriate response in your daily after sales service Manufacturer Fuji Electric Instrumentation Co Ltd Type Described in Fuji Electric s company nameplate on main frame Date of manufacture Described in Fuji Electric s company nameplate on main frame Product nationality Japan NOTICE Fuji Electric Systems Co Ltd 1992 It is prohibited to transfer part or all of this manual without Fuji Electric s permission in written format Issued in Nov 1992 p i N Rev Ist ed Nov 1993 Description in this manual will be changed without prior notice for further improvement Rev 2nd ed Apr 1997 SAFETY PRECAUTION First of all read this Safety Precaution carefully and then use the analyzer in the correct way The cautionary descriptions listed here contain important information about safety so they should always be
27. y at left 5 Lia O j appears 2 Press ENT key for resetting and the analyzer will return to the measurement ENT mode Measurement mode 8 4 Mode No 1 Clearing zero span calibration Function Clearing the coefficients set for zero and span calibration internal coefficients are reset to 1 0 Operating procedure LL ENT FUNC L hE 8 5 Mode No 4 Setting number of ranges Function 1 2 3 On entry into this mode the display at left appears Press ENT key The zero and span calibra tion coefficients will be cleared to 1 and the display at the bottom left will appear To avoid clearing the calibration coeffi cients press FUNC key Selecting the number of ranges for each component Up to 3 ranges are selectable Operating procedure O O Number of ranges to be set Number of ranges Number of ranges usable for analyzer 1 range 2 ranges 3 ranges 1 2 3 On entry into this mode the display at left appears For a 2 component analyzer the number of ranges is presented on the sub display of 2nd component Press gt key and the position for the number of ranges will blin
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