specifications features data sheet zkj7 ndir type infrared gas analyzer (3-component analyzer) this gas analyzer (zkj7) is capable of measuring the con - centrations of no, so 2 , co 2 , co, ch 4 and o 2 components in sample gas. no, so 2 , co 2 , co, ch 4 are measured by non-dispersion infrared method (ndir), while o 2 is measured by external- mount type zirconia method sensor. a maximum of three components including o 2 are simultaneously measurable. the mass fow type twin detector of high sensitivity and reliability adopted in the infrared ray method detection block makes the measurement hardly affected by interfer - ing components. in addition, a microprocessor is built in and a large-size liquid crystal display is equipped for easier operation, higher accuracy and more functions. optimum as an analyzer unit of gas measurement system for combustion exhaust gas from refuse incinerator and boiler, or gas from different industrial furnaces. combination of this product and model sampling system (zsu) is satisfed authentication test by measurement act. standard specifcations principle of measurement: no, so 2 , co 2 , co, ch 4 ; non-dispersion infrared-ray absorption method single light source and double beams (double-beam system) o 2 ; exclusive zirconia o 2 sensor (externally installed). model: zfk7 measurable gas components and measuring range: 1. m e a s u r e t h r e e c o m p o n e n t s i n c l u d i n g o 2 simultaneously and continuously simultaneously and continuously measures up to three components out of no, so 2 , co 2 , co, ch 4 , plus o 2 , or up to totally three components. 2. hardly affected by interference by other gases the mass flow type twin detector of high sensitivity and reliability adopted makes the measurement hardly affected by interfering components of other gas, ensuring a stable operation. 3. equipped with abundant functions o 2 conversion, average value computation, automatic calibration, one touch calibration, upper/lower limit alarm, remote measurement range changeover, range identification signal output, etc. incorporated can confgure applications to match particular uses. 4. easy-to-see large lcd unit the large lcd unit adopted allows observing easily the indication of all measured components and computation values. the interactive operation facilitates setting. 5. maximum range ratio is 1:25 measuring ranges are changeable. 6. drift +/-1% fs/week (more than 0 to 200ppm range) ? max. 3 components measurement including o 2 . ? measuring range ratio 1:5 (o 2 sensor) 1:25 (except for o 2 sensor) ? measuring ranges are changeable between the specifed minimum and maximum range settable one range or two ranges * for measurable components and possible combinations of measuring ranges, refer to tables 1-(1) to (3). minimum range maximam range co 2 co o 2 (external zirconia) 0 C 100ppm 0 C 100vol% 0 C 100vol% ch 4 0 C 100vol% 0 C 200ppm 0 C 100ppm 0 C 25vol% 0 C 10vol% no so 2 0 C 100ppm 0 C 5000ppm 0 C 10vol% 0 C 100ppm EDS3-141A nov. 21, 2011 date this product is the replacement of our gas analyzer
zkj7 2 measured value indication: digital indication in 4 digits (lcd with back light) ? instantaneous value of each component ? instantaneous value after o 2 conversion (only in no, so 2 , co sensor with o 2 sensor) ? average value after o 2 conversion (only in no, so 2 , co sensor with o 2 sensor) analog output signals: 4 to 20ma dc or 0 to 1v dc, non-isolated output ; 7 points max. analog output corresponds to mea - sured value indication in 1:1. max.load 550 . for 4 to 20 ma dc min.load 100k . for 0 to 1v dc * refer to table 2, for the channel no. of displayed values and analog output signals. analog input signal: for signal input from externally installed o 2 sensor. signal requirement; (1) signal from fujis zirconia o 2 sen - sor (type: zfk7) (2) 0 to 1v dc from an o 2 sensor input section is not isolated. (depend on o 2 input signal, measured concentration indication and o 2 conver - sion.) relay contact output: 1a contact (250v ac/2a, resistive load) instrument error, calibration error, range identifcation, auto calibration status, pump on/off. solenoid valve drive signal for auto calibration, auto calibration end. 1c contact (250v ac/2a, resistive load selectable 6 outputs) high/low limit alarm contact output. * all relay contacts are isolated mutu - ally and from the internal circuit. contact input: no-voltage contact (on/0v, off/5v dc, 5ma fowing at on) * for zrg (on/5v, off/0v) remote range switch, auto calibra - tion remote start, remote holding, average value reset. isolated from the internal circuit with photocoupler. contact inputs are not isolated from one another. power supply: voltage rating ; 100v to 240v ac allowable range ; 85v to 264v ac frequency ; 50hz/60hz power consumption; 250va max. operating conditions: ambient temperature ; -5c to 45c ambient humidity ; 90% rh max., non-condensing storage conditions: ambient temperature; -20c to 60c ambient humidity ; 95% rh max., non-condensing dimensions (h x w x d): analyzer main unit; 835 x 218 x 202mm mass: approx. 16 kg finish color: front panel; off-white (munsell 10y7.5/0.5 or equivalent) enclosure: steel casing, for indoor use material of gas-contacting parts: gas inlet/outlet; tefon sample cell; sus304,chloroprene rubber infrared-ray transmitting window; caf 2 o 2 sensor sample cell : sus316 internal piping; toaron, tefon gas inlet/outlet: rc 1 /4 or ?6 hose end purge gas fow rate: 1l/min ( when required)
3 standard functions output signal holding: output signals are held during manual and auto calibrations by activation of holding (turning on its setting). the values to be held are the ones just before start calibration mode or setting value. it is selectable. indication of instantaneous values will not be held. remote output holding: output signal is held at the latest value or setting value by short-circuiting the remote output holding input terminals. holding is maintained while the termi - nals are short-circuited. indication of instantaneous values will not be held. switch ranges : the switch ranges is available in manu - al, auto, and remote modes. only pre - set switch method is effective. manual: allows range to switch by key operation. auto: allows range to switch from low to high range when 90%fs or more is available in the low range. allows range to switch from high to low range when 80%fs or less is avail - able in the low range. remote: no-voltage contact input (for measur - able components) allows range to switch via an external signal when remote range switch input is received. when the contact input terminals for each component are short-circuited, the first range is selected, and it is switched to the second range when the terminals are open. range identifcation signal: the present measuring range is identi - fed by a contact signal. the contact output terminals for each component are short-circuited when the first range is selected, and when the second range is selected, the ter - minals are open. auto calibration: auto calibration is carried out periodi - cally at the preset cycle. w h e n a s t a n d a r d g a s c y l i n d e r fo r calibration and a solenoid valve for opening/closing the gas flow line are prepared externally by the customer, calibration will be carried out with the solenoid valve drive contacts for zero calibration and each span calibration turned on/off sequentially at the set auto calibration timing. auto calibration cycle setting: auto calibration cycle is set. setting is variable within 1 to 99 hours (in increments of 1 hour) or 1 to 40 days (in increments of 1 day). gas fow time setting: the time for flowing each calibration gas in auto calibration is set. settable within 60 to 900 seconds (in increments of 1 second) auto calibration remote start: auto calibration is carried out only once according to an external input signal. calibration sequence is settable in the same way as the general auto calibra - tion. auto calibration is started by opening the auto calibration remote start input terminals after short-circuiting for 1.5 seconds or longer. auto zero calibration: auto zero calibration is carried out peri - odically at the preset cycle. this cycle is independent on auto cali - bradion cycle. when zero calibration gas and solenoid valve for opening/closing the calibration gas flow line are prepared externally by the customer, zero calibration will be carried out with the solenoid valve drive contact for zero calibration turned on/off at the set auto zero calibration timing. auto zero calibration cycle setting: auto zero calibration cycle is set. setting is variable within 1 to 99 hours (in increments of 1 hour) or setting is variable within 1 to 40 days (in increments of 1 day) gas fow time setting: the timing for flowing zero gas in auto zero calibration is set. settable 60 to 900 seconds (in incre - ments of 1 second) high/low limit alarm: alarm contact output turns on when measurement value reach to the preset high or low limit alarm value. contacts close when the channel value of each channel becomes larger than the high alarm limit value or smaller than the low alarm limit value. instrument error contact output: contacts close at occurrence of ana - lyzer error no. 1, 3 or 10. calibration error contact output: contacts close at occurrence of manual or auto calibration error (any of errors no. 4 to 9). auto calibration status contact outputs: contacts close during auto calibration. pump on/off contact output: d u r i n g m e a s u r e m e n t , t h i s c o n t a c t close. while calibration gas is fowing, this contact open. this contact is con - nected in power supply of pump, and stop the sample gas while calibration gas fowing. average value reset: ave r a g e va l u e a ft e r o 2 c o nve r s i o n is started under preset condition by opening the average value reset input terminals after short-circuiting for 1.5 seconds or longer. reset is carried out by short-circuiting. restart is carried out by opening.
zkj7 4 standard requirements for sample gas flow rate : 0.5l / min 0.2l / min temperature : 0 to 50c pressure : 10 kpa or less (gas outlet side should be open to the atmospheric air.) dust : 100g/nm 3 or less in particle size of 1m or less mist : unallowable moisture : below a level where saturation occurs at 2c (condensation unallowable). corrosive component: 1 ppm or less standard gas for calibration: zero gas ; dry n 2 span gas ; e a ch s a m p l e g a s h av i n g concentration 90 to 100% of its measuring component range (recommended). gas beyond concentration 100%fs is unusable. in case a zirconia o 2 analyzer is in - stalled externally and calibration is car - ried out on the same calibration gas line: zero gas ; dry air or atmospheric air (provided without co 2 sen - sor) span gas ; except o 2 measurement, e a ch s a m p l e g a s h av i n g concentration 90 to 100% of its measuring range. for o 2 sensor, o 2 gas of 1 to 2vol%. performance repeatability : 0.5% of full scale linearity : 1% of full scale zero drift : 1% of full scale/week (2% of full scale/week; range be tween 0 to 100ppm and 0 to 200ppm) span drift : 2% of full scale/week response time : (for 90% fs response) 15 sec electrical response within 60 seconds including replace - ment time of sampling gas (when gas fow rate is 0.5l/min) gas replacement time depends on the number of measuring components and measuring range auto calibration interlocking function: when these two products are lined up and installed, output the auto cali - bration synchronized signal to second product. contact output during auto calibration: while auto calibration is carried out, this contact is closed. auto calibration end contact output: cont act is closed for 1.5 seconds after fnishing to fow the gas of auto calibration. optional functions o 2 conversion: conversion of measured no, so 2 and co gas concentrations into values at standard o 2 concentration conversion formula: c = cs c : sample gas concentration after o 2 conversion cs : measured concentration of sample gas os : measured o 2 concentration (limit settable, 1 to 20%o 2 ) on: standard o 2 concentration (value changeable by setting; 0 to 19%o 2 ) average value after o 2 conversion : the result of o 2 conversion or instan - taneous o 2 value can be outputted as an average value in the preset period of time. used for averaging is the moving aver - age method in which sampling is car - ried out at intervals of 30 seconds. (output is updated every 30 seconds. it is the average value in the deter - mined period of time just before the latest updating.) averaging time is settable within 1 to 59 minutes (in increments of 1 min - ute) or 1 to 4 hours (in increments of 1 hour). communication function: rs-232c (9pins d-sub) half-duplex bit serial start-stop synchronization modbus tm protcol contents: read/wright parameters read measurement concen - tration and instrument status remark: when connecting via rs-485 interface, a rs-232c rs- 485 converter should be used. 21Con 21Cos
5 installation requirements ? indoor use. (select a place where the equipment does not receive direct sunshine, draft/rain or radiation from hot substances. if such a place cannot be found, a roof or cover should be prepared for protection.) ? avoide a place where receives heavy vibration ? select a place where atmospheric air is clean ec directive compliance the product conforms to requirement of the low voltage directive and emc directive. it conforms to following standards for product safety and electromagnetic compatibility ; en61010-1 : 2001, en62311 : 2008 safet y requirements for electrical equipment for measurement, control and laboratory use. en61326-1~2006 en61326-2-3 : 2006, en61000-3-2 : 2006, a1: 2009, a2: 2009, en61000-3-3 : 2008 electrical equipment for measurement, control and laboratory use C emc re - quirements. *the product mounted in a steel enclosure conforms to the requirements of emc directive. zrg zkj7 differences zrg zkj7 contact input dc5v no-voltage contact zirconia o 2 analyzer zfk3, 4 zfk7 average value calculation is always carried out even during holding. calculation is suspended during holding calibration error contact auto calibration status error calibration status error (auto/manual)
zkj7 6 principle diagram of ndir type measurement (for no, so 2 , co 2 , co) sample gas outlet ac amplifier operating keys indication gain changeover sample cell sample gas inlet trimmer reference cell interference compensating detector distribution cell (interference filter) infrared (single) light source motor rotary sector sector sync. signal o 2 sensor (option) a/d cpu indicator d/a external input / contact output ram rom output 0 to 1v or 4 to 20ma dc
7 example confguration of gas sampling system for nox measurement o 2 no, s o 2 (1) gas extractor gas inlet tube 15 or larger (4) gas aspirator (2) mist filter (5) (3) drain trap gas outlet drain electronic gas cooler (8) flowmeter (7) membrane filter (7) membrane filter (9) standard gas so 2 /n 2 so 2 o 2 (6) solenoid valve pressure reducing valve infrared gas analyzer main unit zkj7 unit (11) no 2 /no converter (10) zirconia o 2 sensor (zfk7) no /n 2 no n 2 or air zero o 2 /n 2 functions of individual components (1) gas extractor: be strmaeimsas0tmasesatemtzhsmjft s ss metzkt s mttks ptkmtas sps mezneans lt as 45ls (2) mist filter: /sas tfeaemtszs sps naetzs ezns atlsweks sps nf mseznslt m (3) safety drain trap: s ss atwtzmtszs sps naetzs pasls ottzhs fiotns ezns islfs tmts sftaemtszs sps isz mezmu fat fatsofooktas (4) gas aspirator: /sase ftaemtszssps elfktshe sn elfkts s ss he scs0saemtseffasrvs3illtzcs (5) electronic gas cooler: s ss .att s mats lst mfats tzs elfkts he s mss es nt0sfstzmsspseffasrvsz-vs (6) solenoid valve: x tnspsastzmasnfitzhsiektoaemtszshe vs (7) membrane flter: s ss d/fs ptkmtas f tns mss tktltzemts ptzts nf ms feamtikt s ezns ftaltms lsztmsatzhs sps nf ms enatatzhsiszntmtszsszsmatspaszmsfeztkssps matshe sezekj7tavss (8) flowmeter: yn{f m seznslsztmsa smatscs0saemtssps s s ss elfktshe vss (9) standard gas: ,tptatzitshe sf tnspsasiektoaemtzhs7tass s ss ezns fezsspsmatsezekj7tav (10)zirconia o 2 sensor: s ss frmtazeks 7taisztes srjhtzs tz sas f tns psaslte fatzhsmatssrjhtzsiszitzmaemtszs n5smss3qkcstzs elfktshe vs s ss 2 zs m a ts i e ts d / r z u 4s t s f t n bs d / r es asfknsek ssotsatfkeitnv (11)converter: ynntnsmss:mrsezekj7tavss s ss ys ftiteks iemekj ms lemtateks psas tpwittzms iszwta tszssps:m 3 she smss:mst sf tnv *(note) for each gas sampling device, refer to the sepa - rate data sheet for each gas sampling device. dats pskks0tzhs tkkf maemt s es mjftieks j mtls iszwhfaemtszs psas wwts islfsztzms he s lte fatltzms psas lsztmsatzhs islof mtszs traef mshe spaslsostktabsatpf tstzitztaemsabstmiv -szmeims/xp2sfif-d,2-spsas j mtlsiszwhfaemtszslemiatzhsmatsfeamtifkeasf tssaspfamatastzpsalemtszv 2zsmatsie tstzpaeatnshe sezekj7tasnhsntkgsd,bcst satfkeitnbsdtafisztesm 3 s tz sas asfknsek ssotsatfkeitnv
zkj7 8 code symbols p a d b e f g z y a b d 1 4 4 y b c d e f g h j k l m n p r z 4 5 6 7 1 2 3 z k j 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 description note note 1 note 2, 9 note 3 note 3 digit 4 5 6 7 8 9 10 11 12 replecement of zrg type 1st component 2nd component no so 2 co 2 co ch 4 no so 2 co 2 co others none external zirconia type o 2 sensor (zfk7 type) external o 2 analyzer without external indication (input the signal for o 2 conversion externally) rc1/4 (with purging inlet) teflon 6none purging inlet) - in japanese in english 1st component.1st range 0-100ppm 0-200ppm 0-250ppm 0-500ppm 0-1000ppm 0-2000ppm 0-5000ppm 0-1% 0-2% 0-5% 0-10% 0-20% 0-50% 0-100% others 1st component.2nd range none 0-200ppm 0-250ppm 0-500ppm 0-1000ppm 0-2000ppm 0-5000ppm 0-1% 0-2% 0-5% 0-10% 0-20% 0-50% 0-100% others 7 digit no. of code j e y c d e f g h j k l m n p r z 4 y y y y y
9 4 5 6 7 1 2 3 z k j 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 description digit 13 14 15 16 17 18 19 20 21 22 23 2nd component.1st range none 0-100ppm 0-200ppm 0-250ppm 0-500ppm 0-1000ppm 0-2000ppm 0-5000ppm 0-1% 0-2% 0-5% 0-10% 0-20% 0-50% 0-100% others 2nd component.2nd range none 0-200ppm 0-250ppm 0-500ppm 0- 1000ppm 0- 2000ppm 0- 5000ppm 0-1% 0-2% 0-5% 0-10% 0-20% 0-50% 0-100% others - - minimun range maximum range none none 0- 10% 0-25% 0-25% none others |
