infrared gas analyzer for heat treatment furnaces overview this gas analyzer (zfg) is capable of measuring the concen - trations of co 2 , co and ch 4 components in sample gas. compact and lightweight design is intended, and a maximum of 2 components are simultaneously measurable. a high-sensitivity mass fow sensor is used in the detector unit of infrared method. due to use of single beam system for measurement, maintenance is easy and an excellent stability is ensured for a long period of time. in addition, a microprocessor is built in and a large sized liquid crystal display is provided for easier operation, higher accuracy and more functions. this analyzer is thus optimum for combustion control of various heat treatment furnaces. features 1. compact and lightweight design is intended, and a maximum of 2 components are simultaneously mea - surable; 2 components selected from among co 2 , co and ch 4 . 2. a high stability mass fow sensor is used in the detec - tor; the original optics (measurement block) minimizes drift particularly due to contamination of a measuring cell, so an excellent stability is ensured for a long period of time. 3. subdued interference from other gas components; interference from other gas components is insignif - cant, because the detector is a serial dual-layer type transmission detector. 4. easy maintenance; because of single-beam system, the measurement block is simple with no need for optical balance adjustment. therefore, maintenance is easy. 5. easy to operate; operation can be carried out smoothly in an interactive way through a large-size liquid crystal display. 6. abundant functions; ? zero/span can be accurately calibrated just by pressing the calibration keys. ? an error will be detected by self-diagnostic func - tion and indicated by error message. ? besides, a rich variety of functions are provided including cp calculation value output, remote range changeover input, range discrimination signal output and output signal holding. specifications standard specifcations ? measuring system: non-dispersive infrared absorption method with single light source and single beam (single beam method) ? measurable gas components and measuring range: min. measuring range max. measuring range co 2 co 0 to 100vol% 0 to 100vol% 0 to 0.5 ? 0 to 0.5 ? ch 4 0 to 10% 0 to 1 ? ? max. 2 components measurable ? 2 ranges selectable ? measuring range ratio 1:5 max ? measured value indication: digital indication in 4 digits (lcd with back light, automatic off function) ? instantaneous value of each compo - nent ? result display for cp calculation (optional) display language: japanese or english selectable ? analog output signals: 4 to 20ma dc, 0 to 1v dc, 0 to 10mv dc or 0 to 100mv dc non-isolated output analog output corresponds to measured value indication in 1:1. ? allowable load resistance: 4 to 20ma dc 550 ? or less 0 to 1v dc, 0 to 100mv dc, or 0 to 10mv dc, 100k ? or more data sheet zfg EDS3-134A apr. 1, 2011 date
2 zfg ? contact output: 1a relay contact (250v ac/2a, resistive load) instrument error (standard), range iden - tifcation signal (optional) all relay contacts are isolated mutually from the internal circuit. ? contact input (optional): no-voltage contact (on/0v, off/5v dc, 5ma fowing at on) remote range changeover input, re - mote hold input isolated from the internal circuit with photocoupler. contact inputs are not isolated from one another. ? power supply: rated voltage 100 to 240v ac operating voltage 85 to 264v ac frequency; 50hz/60hz power consumption; 50va max. ? operation conditions: ambient temperature; -5 to 45c ambient humidity; 95% rh or less, no condensation ? storage conditions: ambient temperature; -20 to 60c ambient humidity; 95% rh or less, no condensation ? dimensions (h w d): 211 x 218 x 257 mm ? mounting dimensions: panel fash-mount type (vertical mount - ing on panel) ? weight: about 5 kg ? finish color: off-white (munsell 10y7.5/0.5 or equivalent) ? enclosure: steel casing, for indoor use ? material of gas-contacting parts: gas inlet/outlet; sus304, sample cell; sus304/neoprene rubber, infrared-ray transmitting window; caf 2 , internal tubing; toaron ? gas inlet/outlet: rc1/4 or npt1/4 internal thread (as specifed) ? purge gas fow rate: 1 l/min (to be purged as required) ? external terminal: power terminal; m4 screw, others; m3.5 screw performance ? repeatability: within 0.5% of full scale ? linearity: max.1.0% of full scale (max.2.0% of full scale when range ratio is 1:4 or 1:5) ? zero drift: within 2% of full scale/week ? span drift: within 2% of full scale/week ? response time (for 90% fs response): within 10 seconds ? interference from other gas components: within 2% ? warm-up time: approx. 30 minutes description of functions ? automatic off function (standard): after off time is set, the lcd backlight automatically turns off when no key is operated. press any key to turn on. ? output signal holding (standard): by setting an output hold to on, analog output signal is held in the value just before the manual calibration. ? instrument error contact output (standard): when the main unit is abnormal, con - tact signal output is provided. ? cp calculation (optional): the carbon potential of carburizing furnace and conversion furnace are calculated using furnace temperature (fxed input value) and co concentration value (fxed or measured value) while referring to co 2 measured value. cps ; saturated carbon concentration (partial pressure) 0.0028t?1.30 (800c t < 850c) 0.0030t?1.47 (850c t < 950c) 0.0034t?1.85 (950c t < 1000 c) t ; furnace temperature (c) pco ; co concentration value (partial pressure) pco 2 ; co 2 concentration value (partial pressure) k1 ; constant k1=10 (9.06C15966/t) t ; rankine temperature (t9/5+32+460) ? remote output holding (optional): 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 values will not be held. ? remote range changeover (optional): range is selected by the contact input signal. changeover is effective only when remote range setting is turned on. in this case, measuring range can - not be changed manually. when the contact input terminals for each compo - nent are short-circuited, the frst range is selected, and it is changed over to the second range when the terminals are open. ? range identifcation signal (optional): the present measuring range is identifed by a contact signal. when the contact output terminals for each component are closed, the frst range is selected, and it is changed over to the second range when the terminals are open. formula; cp = cps (pco) 2 k1 pco 2
3 standard gas sampling system standard requirements for measuring gases ? flow rate: 0.5l/min 0.2l/min or 1l/min 0.5l/min ? temperature: 0 to 40c ? pressure: 5kpa or less (gas outlet side should be open to the atmospheric air.) ? dust: 0.3m or less ? mist: unallowable ? moisture: below a level where saturation occurs at room temperature (condensation unallowable). ? corrosive component: hcl 1ppm or less ? standard gas for calibration: zero gas; dry n 2 or dry air span gas; each sample gas having concentration 90 to 100% of its measuring range (recommended). unusable at concentrations beyond 100%. measuring g as i n l et note) this is the example of sampling which dose not contain water in the measuring gas. f i l t er ' j m u f s p u m p p ot f l ow m et er c oc k m e m br an e f i l t er e xh aust por t t o cont r o l v al v e s p an ga s z er o ga s $ m f b o b j s 1 1 r ec or der c ont r o l l er a na l y z er installation condition ? mount the instrument in a place that is not subject to direct sunlight, weathering nor radiation heat from high- temperature objects. if such a place cannot be found, a roof or cover should be prepared for protection. ? avoid a place where receives heavy vibration. ? select a clean environment. ? discharge the exhaust gas into atmospheric air at a safe location. ? avoid using the analyzer in an explosion-proof area. principle diagram of ndir type measurement (for co, co 2 , ch 4 ) quantity of infrared ray that is absorbed by the measuring cell is detected with the mass fow sensor. mass flow sensor (detection element of the hot-wire wind speed) 1mm output display signal processing and calculation block preamplifier mass flow sensor detector infrared light source motor measuring cell chopper gas outlet gas inlet
4 zfg code symbols b d e g h j 1 2 4 5 6 7 y 1 f zfg 8 9 10 11 12 13 14 15 16 specification note) see page 5 and 6 for the possible measuring ranges to be manufactured. f 1 2 3 4 1 h j k q l m n v w p x r z y j k q l m n v w p x r z y h j k q l m n v w p x r z y j k q l m n v w p x r z 1 2 y a b c y a b c z 1st component 2nd component co without co 2 without ch 4 without co 2 co ch 4 co co 2 ch 4 r 2 1/4 npt1/4 4 to 20 < a dc 0 to 1v dc 0 to 100 < v dc 0 to 10 < v dc 0 to 0.5 ? 0 to 1 ? 0 to 2 ? 0 to 3 ? 0 to 5 ? 0 to 10 ? 0 to 20 ? 0 to 25 ? 0 to 40 ? 0 to 50 ? 0 to 70 ? 0 to 100 ? others without 0 to 1 ? 0 to 2 ? 0 to 3 ? 0 to 5 ? 0 to 10 ? 0 to 20 ? 0 to 25 ? 0 to 40 ? 0 to 50 ? 0 to 70 ? 0 to 100 ? others without 0 to 0.5 ? 0 to 1 ? 0 to 2 ? 0 to 3 ? 0 to 5 ? 0 to 10 ? 0 to 20 ? 0 to 25 ? 0 to 40 ? 0 to 50 ? 0 to 70 ? 0 to 100 ? others without 0 to 1 ? 0 to 2 ? 0 to 3 ? 0 to 5 ? 0 to 10 ? 0 to 20 ? 0 to 25 ? 0 to 40 ? 0 to 50 ? 0 to 70 ? 0 to 100 ? others japanese english digit standard measurable components gas inlet/outlet connection 1st component, 1st range (see the page 5) 1st component, 2nd range (see the page 5) 2nd component, 1st range (see the page 6) 2nd component, 2nd range (see the page 6) option display language adjustment standard heat treatment furnaces steel converter others without with cp calculation value output with contact input/output with cp calculation value output + contact input/output output signal modification no. 4 5 6 9 10 11 12 14 13 15 16 7 8 ( ) table 1 to 3: single-component analyzer table 4 to 6: two-component analyzer
5 correspondence table of the possible measuring ranges table1: single-component analyzer 2nd range 1st range y j k q l m n v w p x r without 0 to 1% 0 to 2% 0 to 3% 0 to 5% 0 to 10% 0 to 20% 0 to 25% 0 to 40% 0 to 50% 0 to 70% 0 to 100% h 0 to 0.5% ? ? ? ? ? ? ? ? ? ? ? ? j 0 to 1% ? ? ? ? ? ? ? ? ? ? ? ? k 0 to 2% ? ? ? ? ? ? ? ? ? ? ? ? q 0 to 3% ? ? ? ? ? ? ? ? ? ? ? ? l 0 to 5% ? ? ? ? ? ? ? ? ? ? ? ? m 0 to 10% ? ? ? ? ? ? ? ? ? ? ? ? n 0 to 20% ? ? ? ? ? ? ? ? ? ? ? ? v 0 to 25% ? ? ? ? ? ? ? ? ? ? ? ? w 0 to 40% ? ? ? ? ? ? ? ? ? ? ? ? p 0 to 50% ? ? ? ? ? ? ? ? ? ? ? ? x 0 to 70% ? ? ? ? ? ? ? ? ? ? ? ? r 0 to 100% ? ? ? ? ? ? ? ? ? ? ? ? table2: single-component analyzer 2nd range 1st range y j k q l m n v w p x r without 0 to 1% 0 to 2% 0 to 3% 0 to 5% 0 to 10% 0 to 20% 0 to 25% 0 to 40% 0 to 50% 0 to 70% 0 to 100% h 0 to 0.5% ? ? ? ? ? ? ? ? ? ? ? ? j 0 to 1% ? ? ? ? ? ? ? ? ? ? ? ? k 0 to 2% ? ? ? ? ? ? ? ? ? ? ? ? q 0 to 3% ? ? ? ? ? ? ? ? ? ? ? ? l 0 to 5% ? ? ? ? ? ? ? ? ? ? ? ? m 0 to 10% ? ? ? ? ? ? ? ? ? ? ? ? n 0 to 20% ? ? ? ? ? ? ? ? ? ? ? ? v 0 to 25% ? ? ? ? ? ? ? ? ? ? ? ? w 0 to 40% ? ? ? ? ? ? ? ? ? ? ? ? p 0 to 50% ? ? ? ? ? ? ? ? ? ? ? ? x 0 to 70% ? ? ? ? ? ? ? ? ? ? ? ? r 0 to 100% ? ? ? ? ? ? ? ? ? ? ? ? 2nd range 1st range y k q l m n v w p x r without 0 to 2% 0 to 3% 0 to 5% 0 to 10% 0 to 20% 0 to 25% 0 to 40% 0 to 50% 0 to 70% 0 to 100% j 0 to 1% ? ? ? ? ? ? ? ? ? ? ? k 0 to 2% ? ? ? ? ? ? ? ? ? ? ? q 0 to 3% ? ? ? ? ? ? ? ? ? ? ? l 0 to 5% ? ? ? ? ? ? ? ? ? ? ? m 0 to 10% ? ? ? ? ? ? ? ? ? ? ? n 0 to 20% ? ? ? ? ? ? ? ? ? ? ? v 0 to 25% ? ? ? ? ? ? ? ? ? ? ? w 0 to 40% ? ? ? ? ? ? ? ? ? ? ? p 0 to 50% ? ? ? ? ? ? ? ? ? ? ? x 0 to 70% ? ? ? ? ? ? ? ? ? ? ? r 0 to 100% ? ? ? ? ? ? ? ? ? ? ? table3: single-component analyzer
6 zfg correspondence table of the possible measuring ranges table4: two-component analyzer 1st component 2nd component 1st range/2nd range 1st range/ 2nd range code 0 to 0.5 /1% 0 to 1 /2% 0 to 1 /3% 0 to 2 /3% 0 to 2 /5% 0 to 3 /5% 0 to 5 /10% 0 to 10 /20% 0 to 10 /25% 0 to 20 /25% 0 to 20 /40% 0 to 20 /50% 0 to 25 /40% 0 to 25 /50% 0 to 40 /50% 0 to 40 /70% 0 to 50 /70% 0 to 50 /100% 0 to 70 /100% 0 to 100% /without hj jk jq kq kl ql lm mn mv nv nw np vw vp wp wx px pr xr ry 0 to 0.5/1% hj ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 1/2% jk ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 1/3% jq ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 2/3% kq ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 2/5% kl ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 3/5% ql ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 5/10% lm ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 10/20% mn ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 10/25% mv ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 20/25% nv ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 20/40% nw ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 20/50% np ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 25/40% vw ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 25/50% vp ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 40/50% wp ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 40/70% wx ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 50/70% px ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 50/100% pr ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 70/100% xr ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 100%/without ry ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? table6: two-component analyzer 1st component 2nd component 1st range/2nd range 1st range/ 2nd range code 0 to 1 /2% 0 to 1 /3% 0 to 2 /3% 0 to 2 /5% 0 to 3 /5% 0 to 5 /10% 0 to 10 /20% 0 to 10 /25% 0 to 20 /25% 0 to 20 /40% 0 to 20 /50% 0 to 25 /40% 0 to 25 /50% 0 to 40 /50% 0 to 40 /70% 0 to 50 /70% 0 to 50 /100% 0 to 70 /10% 0 to 100 % /without jk jq kq kl ql lm mn mv nv nw np vw vp wp wx px pr xr ry 0 to 1/2% jk ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 1/3% jq ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 2/3% kq ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 2/5% kl ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 3/5% ql ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 5/10% lm ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 10/20% mn ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 10/25% mv ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 20/25% nv ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 20/40% nw ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 20/50% np ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 25/40% vw ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 25/50% vp ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 40/50% wp ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 40/70% wx ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 50/70% px ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 50/100% pr ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 70/100% xr ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 100%/without ry ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1st component 2nd component 1st range/2nd range 1st range/ 2nd range code 0 to 2 /3% 0 to 2 /5% 0 to 3 /5% 0 to 5 /10% 0 to 10 /20% 0 to 10 /25% 0 to 20 /25% 0 to 20 /40% 0 to 20 /50% 0 to 25 /40% 0 to 25 /50% 0 to 40 /50% 0 to 40 /70% 0 to 50 /70% 0 to 50 /100% 0 to 70 /100% 0 to 100 % /without kq kl ql lm mn mv nv nw np vw vp wp wx px pr xr ry 0 to 1/2% jk ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 1/3% jq ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 2/3% kq ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 2/5% kl ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 3/5% ql ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 5/10% lm ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 10/20% mn ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 10/25% mv ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 20/25% nv ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 20/40% nw ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 20/50% np ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 25/40% vw ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 25/50% vp ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 40/50% wp ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 40/70% wx ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 50/70% px ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 50/100% pr ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 70/100% xr ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0 to 100%/without ry ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? table5: two-component analyzer
7 outline diagram (unit : mm) pe n l a c power v source fuse 250v t 1a e u f s external terminal m3.5 screw gas inlet rc1/4 or npt1/4 (as specified) gas outlet rc1/4 or npt1/4 (as specified) purge gas inlet rc1/4 or npt1/4 (as specified) power terminal m4 screw fuse (250v / 1a) power switch operation part display panel 1.6 < t < 10 panel cut dimensions external wiring diagram +2 0 +2 0 infrared?gas?analyzer fuji electric co.,ltd. 0- ac100v?ac240v 50/60 hz dc ser.no. power output mfd 0- 0- made in japan type 0- 0- va ch2 - + + ch2 r?id - r?hold - 10 20 9 19 + 5 15 - fault 6 7 8 18 17 16 + ch1 r?id ch3 output r?rng ch1 output - + ch1 1 2 12 11 ch2 output - 3 4 14 13 + r?rng panel mounting bracket ent span mode esc zero gas analyzer purge outlet inlet 225 (140) 211 (25) 223 257 218 211 171 204 206 173 1 11 2 ch1 output ch1 range identification signal (optional) 100 to 240v ac 50/60hz 50va 12 3 13 4 14 5 15 6 16 7 17 8 18 9 19 10 1 2 3 pe n l 20 ch2 range identification signal (optional) error contact output remote hold input (optional) ch2 output ch3 output ch1 remote range input (optional) ch2 remote range input (optional) + C external terminal power terminal + C + C + C + C + C scope of delivery: main unit panel mounting bracket x1 power fuse x2 (250v ac 1a) instruction manual; 1 copy optional items: gas sampling device standard gas receiving instrument, etc ordering information 1. type 2. application and composition of sample gas (in case of nonstandard)
zfg printed in japan caution on safety *before using this product, be sure to read its instruction manual in advance. international sales div sales group gate city ohsaki, east t ower , 1 1-2, osaki 1-chome, shinagawa-ku, t okyo 141-0032, japan http://www .fujielectric.com phone: 81-3-5435-7280, 7281 fax: 81-3-5435-7425 http://www .fjielectric.com/products/instruments/ information in this catalog is subject to change without notice.
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