91:
234:
have the principal advantage of very low energy consumption, and that they can be reduced in size to fit into microelectronic-based systems. On the downside, short and long term drift effects, as well as a rather low overall lifetime, are major obstacles when compared with the NDIR measurement
2347:
124:
tube, an interference (wavelength) filter, and an infrared detector. The gas is pumped or diffuses into the light tube, and the electronics measure the absorption of the characteristic
239:
sensors are fully calibrated prior to shipping from the factory. Over time, the zero point of the sensor needs to be calibrated to maintain the long term stability of the sensor.
2297:
941:
Proceedings of the 4th
International Symposium on Building and Ductwork Air Tightness and 30th AIVC Conference on Trends in High Performance Buildings and the Role of Ventilation
2327:
729:
2342:
1835:
1084:
2337:
2269:
1034:
933:
2142:
1018:
2302:
2264:
636:
2125:
144:
2167:
1880:
1416:
1145:
278:
concentration for ventilation and occupancy purposes. Furthermore, inasmuch as ventilation is a factor in the spread of respiratory
997:
Arief-Ang, I.B.; Salim, F.D.; Hamilton, M. (2018-04-14). "SD-HOC: Seasonal
Decomposition Algorithm for Mining Lagged Time Series".
1236:
2317:
2131:
1511:
1075:
295:
156:
954:
Arief-Ang, I.B.; Hamilton, M.; Salim, F. (2018-06-01). "RUP: Large Room
Utilisation Prediction with carbon dioxide sensor".
2468:
2279:
2223:
2218:
1795:
1323:
454:
330:-based sensors are less susceptible as they are more specific to human breathing, although the very health conditions the
99:
79:
1840:
1391:
1312:
1271:
128:
of light. NDIR sensors are most often used for measuring carbon dioxide. The best of these have sensitivities of 20–50
2183:
1985:
1496:
1431:
1349:
1261:
1125:
740:
2332:
2213:
1920:
1685:
1529:
411:
318:
eq). Although the readings tend to be good enough in the long run, introducing non-respiration sources of VOC or CO
195:
187:
2385:
2244:
2208:
2010:
1640:
1595:
1523:
1375:
1318:
449:
sensors can be used to monitor the quality of air and the tailored need for fresh air, respectively. Measuring CO
299:
260:
2432:
2254:
1950:
1550:
1329:
1220:
1205:
482:
256:
159:(MEMS) IR sources to bring down the costs of this sensor and to create smaller devices (for example for use in
28:
453:
levels indirectly determines how many people are in a room, and ventilation can be adjusted accordingly. See
2463:
2427:
2352:
2274:
2203:
2147:
2079:
1975:
1890:
1800:
1765:
1241:
151:
applications. In this case they are mated to an ATR (attenuated total reflection) optic and measure the gas
2417:
2379:
2259:
1970:
1401:
598:"A low cost MEMS based NDIR system for the monitoring of carbon dioxide in breath analysis at ppm levels"
2437:
2115:
1790:
1461:
1281:
1041:
1005:]. Communications in Computer and Information Science. Vol. 845. Springer. pp. 125–143.
2458:
2239:
2229:
2173:
2110:
2005:
1585:
1534:
1100:
883:
826:
609:
518:
503:"Real-time occupancy detection with physics-informed pattern-recognition machines based on limited CO
467:
331:
207:
2105:
2095:
2069:
1855:
1517:
1426:
1396:
1296:
1266:
1160:
1120:
346:
815:"Exhaled CO 2 as a COVID-19 Infection Risk Proxy for Different Indoor Environments and Activities"
2368:
2312:
2249:
2026:
1905:
1900:
1690:
1501:
1486:
1068:
979:
795:
544:
351:
59:
210:. These pressure waves are then detected with an acoustic detector and converted to a usable CO
90:
1940:
1895:
1650:
1645:
1575:
1471:
1307:
1110:
1014:
971:
911:
852:
787:
670:
536:
129:
1053:
2407:
2162:
2157:
1740:
1446:
1344:
1339:
1334:
1251:
1006:
963:
901:
891:
842:
834:
777:
711:
651:
617:
578:
526:
501:
Kampezidou, S. I.; Tikayat Ray, A.; Duncan, S.; Balchanos, M.G.; Mavris, D.N. (2021-01-07).
436:
160:
782:
765:
194:
can be measured by subjecting a sample to pulses of electromagnetic energy (such as from a
2402:
2374:
2016:
1930:
1925:
1870:
1860:
1850:
1780:
1720:
1635:
1620:
1441:
1436:
1411:
1406:
1276:
1200:
887:
830:
613:
522:
2152:
2049:
1825:
1805:
1770:
1705:
1625:
1466:
1456:
1365:
1215:
1185:
1140:
1135:
906:
871:
847:
814:
428:
401:
381:
167:
47:
17:
582:
2452:
2234:
2085:
1980:
1945:
1715:
1710:
1665:
1660:
1506:
1481:
1476:
1451:
1421:
1291:
1190:
1170:
1150:
1061:
799:
715:
597:
548:
472:
365:
116:
in a gaseous environment by its characteristic absorption. The key components are an
983:
2412:
2090:
1990:
1965:
1960:
1955:
1885:
1820:
1700:
1670:
1610:
1605:
1580:
1491:
1370:
1286:
1210:
1195:
1180:
477:
396:
264:
231:
109:
531:
502:
2422:
2064:
2021:
1995:
1935:
1915:
1910:
1785:
1745:
1730:
1675:
1600:
1570:
1565:
1381:
1246:
1165:
1010:
838:
251:
For indoor environments such as offices or gyms where the principal source of CO
85:
58:) and chemical gas sensors. Measuring carbon dioxide is important in monitoring
967:
143:
for applications such as beverage carbonation, pharmaceutical fermentation and
2178:
2100:
2031:
2000:
1875:
1845:
1775:
1725:
1695:
1680:
1655:
1560:
1360:
1256:
1175:
1115:
621:
422:
406:
391:
370:
125:
63:
975:
540:
2137:
1815:
1810:
1760:
1735:
1590:
1386:
764:
Moriyama, Miyu; Hugentobler, Walter J.; Iwasaki, Akiko (29 September 2020).
386:
206:
molecules within the sample will absorb and generate pressure waves via the
915:
856:
791:
2120:
2054:
1555:
1355:
1155:
1130:
1105:
702:
sensors with silicon-based polymers on quartz microbalance transducers".
375:
356:
287:
117:
1630:
1302:
698:
Zhou, R.; Vaihinger, S.; Geckeler, K.E.; Göpel, W. (1994). "Reliable CO
323:
1003:
SD-HOC: Seasonal
Decomposition Algorithm for Mining Lagged Time Series
896:
2307:
2059:
1865:
1615:
655:
417:
2322:
1755:
302:(MOS) technology. The reading they generate is called estimated CO
279:
121:
89:
1830:
1750:
565:
Lang, T.; Wiemhöfer, H.D.; Göpel, W. (1996). "Carbonate based CO
442:
274:) concentrations provides a good-enough estimator of the real CO
105:
55:
1057:
294:. Sensors for these substances can be made using cheap (~$ 20)
198:) that is tuned specifically to the absorption wavelength of CO
132:. Typical NDIR sensors cost in the (US) $ 100 to $ 1000 range.
174:
in a liquid, if the amount of foreign gases is insignificant.
934:"MOS gas sensor technology for demand controlled ventilation"
230:
gas sensors with sensitive layers based on polymer- or hetero
290:
risk; the worse the ventilation, the better for viruses and
170:) also can be used to measure the amount of dissolved CO
1035:"Demand Control Ventilation Benefits for Your Building"
259:, rescaling some easier-to-measure quantities such as
2395:
2361:
2288:
2192:
2040:
1543:
1229:
1091:
870:Rüffer, D; Hoehne, F; Bühler, J (31 March 2018).
872:"New Digital Metal-Oxide (MOx) Sensor Platform"
819:Environmental Science & Technology Letters
596:Vincent, T.A.; Gardner, J.W. (November 2016).
214:reading through a computer or microprocessor.
1069:
766:"Seasonality of Respiratory Viral Infections"
650:(PhD). Cranfield University. pp. 35–36.
62:, the function of the lungs in the form of a
8:
813:Peng, Zhe; Jimenez, Jose L. (11 May 2021).
334:is set to diagnose will also disrupt them.
1836:High efficiency glandless circulating pump
1085:Heating, ventilation, and air conditioning
1076:
1062:
1054:
905:
895:
846:
781:
530:
2270:Mold growth, assessment, and remediation
270:
46:is an instrument for the measurement of
932:Herberger S, Herold M, Ulmer H (2009).
493:
66:device, and many industrial processes.
927:
925:
783:10.1146/annurev-virology-012420-022445
637:"3.5 Photoacoustic Spectroscopy (PAS)"
560:
558:
139:sensors are also used for dissolved CO
50:gas. The most common principles for CO
2143:Programmable communicating thermostat
326:, will undermine their reliability. H
7:
2265:Mechanical, electrical, and plumbing
1040:. KMC Controls. 2013. Archived from
455:demand controlled ventilation (DCV)
202:. With each pulse of energy, the CO
2126:Minimum efficiency reporting value
644:NDIR Instrumentation Design for CO
322:, such as peeling fruits or using
54:sensors are infrared gas sensors (
25:
2168:Standard temperature and pressure
1881:Packaged terminal air conditioner
1417:Passive daytime radiative cooling
1146:Heat pump and refrigeration cycle
704:Sensors and Actuators B: Chemical
602:Sensors and Actuators B: Chemical
571:Sensors and Actuators B: Chemical
155:. New developments include using
1237:Absorption-compression heat pump
675:Sensors - Infineon Technologies"
569:sensors with high performance".
70:Nondispersive infrared (NDIR) CO
2132:Normal temperature and pressure
1512:Vapor-compression refrigeration
956:Pervasive and Mobile Computing
296:Microelectromechanical systems
286:levels are a rough metric for
157:microelectromechanical systems
1:
2280:Testing, adjusting, balancing
2224:Building information modeling
2219:Building services engineering
1796:Ground-coupled heat exchanger
1324:Demand controlled ventilation
1272:Building insulation materials
635:Zakaria, Ryadh (March 2010).
583:10.1016/S0925-4005(96)01846-1
532:10.1016/j.enbuild.2021.110863
100:nondispersive infrared sensor
80:Nondispersive infrared sensor
1841:High-pressure cut-off switch
1392:Ice storage air conditioning
1313:Dedicated outdoor air system
876:Sensors (Basel, Switzerland)
716:10.1016/0925-4005(93)01018-Y
98:concentration meter using a
2184:Thermostatic radiator valve
1986:Thermostatic radiator valve
1497:Underfloor air distribution
1432:Radiant heating and cooling
1350:Energy recovery ventilation
1262:Automobile air conditioning
1126:Domestic energy consumption
1011:10.1007/978-981-13-0292-3_8
839:10.1021/acs.estlett.1c00183
669:AG, Infineon Technologies.
2485:
2333:Institute of Refrigeration
2214:Architectural technologist
1686:Electrostatic precipitator
968:10.1016/j.pmcj.2018.03.001
196:distributed feedback laser
188:photoacoustic spectroscopy
83:
77:
26:
2386:Volatile organic compound
2245:Environmental engineering
2209:Architectural engineering
2011:Ultra-low particulate air
1596:Automatic balancing valve
1524:Variable refrigerant flow
1376:Heat recovery ventilation
1319:Deep water source cooling
770:Annual Review of Virology
622:10.1016/j.snb.2016.04.016
300:metal oxide semiconductor
261:volatile organic compound
2433:Template:Home automation
2255:Kitchen exhaust cleaning
1951:Solar-assisted heat pump
1551:Air conditioner inverter
1330:Displacement ventilation
1221:Vapour pressure of water
1206:Thermal destratification
507:and temperature sensors"
483:Colorimetric capnography
29:Carbon monoxide detector
27:Not to be confused with
2428:World Refrigeration Day
2275:Refrigerant reclamation
2204:Architectural acoustics
2148:Programmable thermostat
2080:Clean air delivery rate
1976:Thermal expansion valve
1891:Pressurisation ductwork
1801:Ground source heat pump
1242:Absorption refrigerator
734:Auto-Calibration Guide"
18:Carbon dioxide detector
2418:Glossary of HVAC terms
2380:Sick building syndrome
2260:Mechanical engineering
1971:Smoke exhaust ductwork
1402:Mixed-mode ventilation
186:can be measured using
102:
2438:Template:Solar energy
2116:Intelligent buildings
2075:Carbon dioxide sensor
1462:Room air distribution
1282:Central solar heating
362:Cellar and gas stores
190:. Concentration of CO
178:Photoacoustic sensors
93:
36:carbon dioxide sensor
2469:Indoor air pollution
2240:Duct leakage testing
2230:Deep energy retrofit
2174:Thermographic camera
2111:Infrared thermometer
1586:Air source heat pump
1535:Water heat recycling
1101:Air changes per hour
511:Energy and Buildings
468:Exhaust gas analyzer
347:Modified atmospheres
332:hydrogen breath test
208:photoacoustic effect
112:sensors to detect CO
2106:HVAC control system
2096:Home energy monitor
2070:Building automation
1856:Inverter compressor
1518:Variable air volume
1427:Passive ventilation
1397:Kitchen ventilation
1297:Constant air volume
1267:Autonomous building
888:2018Senso..18.1052.
831:2021EnSTL...8..392P
614:2016SeAcB.236..954V
523:2021EneBu.24210863K
2369:Indoor air quality
2313:ASTM International
2250:Hydronic balancing
2027:Wood-burning stove
1906:Radiator reflector
1691:Evaporative cooler
1502:Underfloor heating
1487:Thermal insulation
437:occupancy counting
352:Indoor air quality
235:principle. Most CO
103:
60:indoor air quality
2446:
2445:
2362:Health and safety
1941:Scroll compressor
1896:Process duct work
1651:Convection heater
1646:Condensing boiler
1576:Air-mixing plenum
1472:Solar combisystem
1308:Cross ventilation
1111:Building envelope
1020:978-981-13-0291-6
897:10.3390/s18041052
435:For indoor human
16:(Redirected from
2476:
2408:Building science
2163:Smart thermostat
2158:Room temperature
1741:Fireplace insert
1447:Radon mitigation
1345:Electric heating
1340:District heating
1335:District cooling
1252:Air conditioning
1078:
1071:
1064:
1055:
1049:
1048:
1046:
1039:
1031:
1025:
1024:
994:
988:
987:
951:
945:
944:
938:
929:
920:
919:
909:
899:
867:
861:
860:
850:
810:
804:
803:
785:
761:
755:
754:
752:
751:
745:
739:. Archived from
738:
726:
720:
719:
710:(1–3): 415–420.
695:
689:
688:
686:
685:
679:www.infineon.com
666:
660:
659:
641:
632:
626:
625:
593:
587:
586:
562:
553:
552:
534:
498:
445:applications, CO
273:
166:Another method (
161:air conditioning
21:
2484:
2483:
2479:
2478:
2477:
2475:
2474:
2473:
2449:
2448:
2447:
2442:
2403:ASHRAE Handbook
2391:
2375:Passive smoking
2357:
2290:
2284:
2196:
2194:
2188:
2042:
2036:
2017:Whole-house fan
1931:Run-around coil
1926:Reversing valve
1871:Mechanical room
1861:Kerosene heater
1851:Infrared heater
1781:Gasoline heater
1721:Fan filter unit
1636:Condensate pump
1621:Centrifugal fan
1539:
1442:Radiant heating
1437:Radiant cooling
1412:Passive cooling
1407:Microgeneration
1277:Central heating
1225:
1201:Thermal comfort
1093:
1087:
1082:
1052:
1044:
1037:
1033:
1032:
1028:
1021:
996:
995:
991:
953:
952:
948:
936:
931:
930:
923:
869:
868:
864:
812:
811:
807:
763:
762:
758:
749:
747:
743:
736:
733:
728:
727:
723:
701:
697:
696:
692:
683:
681:
674:
668:
667:
663:
647:
639:
634:
633:
629:
595:
594:
590:
568:
564:
563:
556:
506:
500:
499:
495:
491:
464:
452:
448:
382:Confined spaces
340:
329:
321:
317:
313:
309:
305:
285:
277:
272:
268:
254:
249:
246:
238:
229:
224:
221:
213:
205:
201:
193:
185:
180:
173:
163:applications).
148:
142:
138:
115:
97:
88:
82:
76:
73:
53:
43:
32:
23:
22:
15:
12:
11:
5:
2482:
2480:
2472:
2471:
2466:
2464:Carbon dioxide
2461:
2451:
2450:
2444:
2443:
2441:
2440:
2435:
2430:
2425:
2420:
2415:
2410:
2405:
2399:
2397:
2393:
2392:
2390:
2389:
2383:
2377:
2372:
2365:
2363:
2359:
2358:
2356:
2355:
2350:
2345:
2340:
2335:
2330:
2325:
2320:
2315:
2310:
2305:
2300:
2294:
2292:
2286:
2285:
2283:
2282:
2277:
2272:
2267:
2262:
2257:
2252:
2247:
2242:
2237:
2232:
2227:
2221:
2216:
2211:
2206:
2200:
2198:
2190:
2189:
2187:
2186:
2181:
2176:
2171:
2165:
2160:
2155:
2153:Psychrometrics
2150:
2145:
2140:
2135:
2129:
2123:
2118:
2113:
2108:
2103:
2098:
2093:
2088:
2083:
2077:
2072:
2067:
2062:
2057:
2052:
2050:Air flow meter
2046:
2044:
2038:
2037:
2035:
2034:
2029:
2024:
2019:
2014:
2008:
2003:
1998:
1993:
1988:
1983:
1978:
1973:
1968:
1963:
1958:
1953:
1948:
1943:
1938:
1933:
1928:
1923:
1918:
1913:
1908:
1903:
1898:
1893:
1888:
1883:
1878:
1873:
1868:
1863:
1858:
1853:
1848:
1843:
1838:
1833:
1828:
1826:Heating system
1823:
1818:
1813:
1808:
1806:Heat exchanger
1803:
1798:
1793:
1788:
1783:
1778:
1773:
1771:Gas compressor
1768:
1763:
1758:
1753:
1748:
1743:
1738:
1733:
1728:
1723:
1718:
1713:
1708:
1706:Expansion tank
1703:
1698:
1693:
1688:
1683:
1678:
1673:
1668:
1663:
1658:
1653:
1648:
1643:
1638:
1633:
1628:
1626:Ceramic heater
1623:
1618:
1613:
1608:
1603:
1598:
1593:
1588:
1583:
1578:
1573:
1568:
1563:
1558:
1553:
1547:
1545:
1541:
1540:
1538:
1537:
1532:
1527:
1521:
1515:
1509:
1504:
1499:
1494:
1489:
1484:
1479:
1474:
1469:
1467:Solar air heat
1464:
1459:
1457:Renewable heat
1454:
1449:
1444:
1439:
1434:
1429:
1424:
1419:
1414:
1409:
1404:
1399:
1394:
1389:
1384:
1379:
1373:
1368:
1366:Forced-air gas
1363:
1358:
1353:
1347:
1342:
1337:
1332:
1327:
1321:
1316:
1310:
1305:
1300:
1294:
1289:
1284:
1279:
1274:
1269:
1264:
1259:
1254:
1249:
1244:
1239:
1233:
1231:
1227:
1226:
1224:
1223:
1218:
1216:Thermodynamics
1213:
1208:
1203:
1198:
1193:
1188:
1186:Psychrometrics
1183:
1178:
1173:
1168:
1163:
1158:
1153:
1148:
1143:
1141:Gas compressor
1138:
1136:Fluid dynamics
1133:
1128:
1123:
1118:
1113:
1108:
1103:
1097:
1095:
1089:
1088:
1083:
1081:
1080:
1073:
1066:
1058:
1051:
1050:
1047:on 2014-06-27.
1026:
1019:
989:
946:
921:
862:
825:(5): 392–397.
805:
756:
731:
721:
699:
690:
672:
661:
645:
627:
588:
577:(1–3): 383–7.
566:
554:
504:
492:
490:
487:
486:
485:
480:
475:
470:
463:
460:
459:
458:
450:
446:
439:
433:
432:
431:
429:Decaffeination
426:
420:
415:
409:
404:
402:Transportation
399:
394:
389:
384:
379:
373:
368:
366:Marine vessels
363:
360:
354:
349:
339:
336:
327:
319:
315:
314:equivalent (CO
311:
307:
303:
283:
275:
252:
248:
244:
241:
236:
227:
223:
219:
216:
211:
203:
199:
191:
183:
179:
176:
171:
146:
140:
136:
113:
95:
78:Main article:
75:
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48:carbon dioxide
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2235:Duct cleaning
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2086:Control valve
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2020:
2018:
2015:
2012:
2009:
2007:
2006:Turning vanes
2004:
2002:
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1994:
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1989:
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1981:Thermal wheel
1979:
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1946:Solar chimney
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1716:Fan coil unit
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1661:Cooling tower
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1507:Vapor barrier
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1482:Solar heating
1480:
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1477:Solar cooling
1475:
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1452:Refrigeration
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1422:Passive house
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1292:Chilled water
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1191:Sensible heat
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1171:Noise control
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1151:Heat transfer
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797:
793:
789:
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779:
776:(1): 83–101.
775:
771:
767:
760:
757:
746:on 2014-08-19
742:
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481:
479:
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474:
473:Oxygen sensor
471:
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217:
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149:sequestration
133:
131:
127:
123:
119:
111:
110:spectroscopic
107:
101:
92:
87:
81:
69:
67:
65:
61:
57:
49:
45:
37:
30:
19:
2413:Fireproofing
2197:and services
2193:Professions,
2091:Gas detector
2074:
1991:Trickle vent
1966:Smoke damper
1961:Smoke canopy
1956:Space heater
1886:Plenum space
1821:Heating film
1701:Exhaust hood
1671:Dehumidifier
1611:Blast damper
1606:Barrier pipe
1581:Air purifier
1492:Thermosiphon
1371:Free cooling
1287:Chilled beam
1211:Thermal mass
1196:Stack effect
1181:Particulates
1161:Infiltration
1092:Fundamental
1042:the original
1029:
1002:
998:
992:
959:
955:
949:
940:
879:
875:
865:
822:
818:
808:
773:
769:
759:
748:. Retrieved
741:the original
724:
707:
703:
693:
682:. Retrieved
678:
664:
643:
630:
605:
601:
591:
574:
570:
514:
510:
496:
478:Gas detector
397:Horticulture
338:Applications
291:
265:hydrogen gas
250:
243:Estimated CO
232:polysiloxane
225:
181:
165:
152:
134:
108:sensors are
104:
39:
35:
33:
2459:Gas sensors
2423:Warm Spaces
2065:Blower door
2043:and control
2041:Measurement
2022:Windcatcher
1996:Trombe wall
1936:Sail switch
1916:Refrigerant
1911:Recuperator
1786:Grease duct
1746:Freeze stat
1731:Fire damper
1601:Back boiler
1571:Air ionizer
1566:Air handler
1530:Ventilation
1382:Hybrid heat
1247:Air barrier
1166:Latent heat
999:Data Mining
882:(4): 1052.
648:Gas Sensing
608:: 954–964.
423:Rebreathers
412:Ventilation
371:Greenhouses
257:respiration
226:Chemical CO
218:Chemical CO
168:Henry's Law
86:Capnography
2453:Categories
2179:Thermostat
2101:Humidistat
2032:Zone valve
2001:TurboSwing
1876:Oil heater
1846:Humidifier
1776:Gas heater
1726:Fan heater
1696:Evaporator
1681:Economizer
1656:Compressor
1561:Air filter
1544:Components
1361:Forced-air
1257:Antifreeze
1230:Technology
1176:Outgassing
1116:Convection
750:2014-08-19
684:2020-11-10
517:: 110863.
489:References
414:management
407:Cryogenics
392:Healthcare
343:Examples:
292:vice versa
263:(VOC) and
126:wavelength
120:source, a
84:See also:
64:capnograph
2289:Industry
2138:OpenTherm
1816:Heat pump
1811:Heat pipe
1761:Fume hood
1736:Fireplace
1641:Condenser
1591:Attic fan
1387:Hydronics
976:1873-1589
962:: 49–72.
943:. Berlin.
800:214601321
656:1826/6784
549:233831299
541:0378-7788
387:Aerospace
359:detection
255:is human
2396:See also
2121:LonWorks
2055:Aquastat
1921:Register
1901:Radiator
1556:Air door
1356:Firestop
1156:Humidity
1131:Enthalpy
1121:Dilution
1106:Bake-out
1094:concepts
984:13670861
916:29614746
857:37566374
792:32196426
462:See also
376:Landfill
357:Stowaway
288:COVID-19
118:infrared
2195:trades,
1766:Furnace
1631:Chiller
1303:Coolant
907:5948493
884:Bibcode
848:8043197
827:Bibcode
610:Bibcode
519:Bibcode
425:(SCUBA)
324:perfume
310:) or CO
298:(MEMS)
280:viruses
222:sensors
153:in situ
135:NDIR CO
74:sensors
2348:SMACNA
2308:ASHRAE
2128:(MERV)
2082:(CADR)
2060:BACnet
2013:(ULPA)
1866:Louver
1791:Grille
1666:Damper
1616:Boiler
1514:(VCRS)
1315:(DOAS)
1017:
982:
974:
914:
904:
855:
845:
798:
790:
547:
539:
418:Mining
247:sensor
44:sensor
2388:(VOC)
2382:(SBS)
2371:(IAQ)
2328:CIBSE
2323:BSRIA
2226:(BIM)
2170:(STP)
2134:(NTP)
1756:Freon
1526:(VRF)
1520:(VAV)
1378:(HRV)
1352:(ERV)
1326:(DCV)
1299:(CAV)
1045:(PDF)
1038:(PDF)
1001:[
980:S2CID
937:(PDF)
796:S2CID
744:(PDF)
737:(PDF)
640:(PDF)
545:S2CID
122:light
2343:LEED
2303:AMCA
2298:AHRI
1831:HEPA
1751:Flue
1676:Duct
1015:ISBN
972:ISSN
912:PMID
853:PMID
788:PMID
537:ISSN
443:HVAC
441:For
306:(eCO
282:, CO
106:NDIR
56:NDIR
2353:UMC
2338:IIR
2318:BRE
1711:Fan
1007:doi
964:doi
902:PMC
892:doi
843:PMC
835:doi
778:doi
730:"CO
712:doi
671:"CO
652:hdl
618:doi
606:236
579:doi
527:doi
515:242
378:gas
130:PPM
38:or
2455::
1013:.
978:.
970:.
960:46
958:.
939:.
924:^
910:.
900:.
890:.
880:18
878:.
874:.
851:.
841:.
833:.
821:.
817:.
794:.
786:.
772:.
768:.
708:19
706:.
677:.
642:.
616:.
604:.
600:.
575:34
573:.
557:^
543:.
535:.
525:.
513:.
509:.
182:CO
145:CO
94:CO
40:CO
34:A
1077:e
1070:t
1063:v
1023:.
1009::
986:.
966::
918:.
894::
886::
859:.
837::
829::
823:8
802:.
780::
774:7
753:.
732:2
718:.
714::
700:2
687:.
673:2
658:.
654::
646:2
624:.
620::
612::
585:.
581::
567:2
551:.
529::
521::
505:2
457:.
451:2
447:2
328:2
320:2
316:2
312:2
308:2
304:2
284:2
276:2
271:2
269:H
267:(
253:2
245:2
237:2
228:2
220:2
212:2
204:2
200:2
192:2
184:2
172:2
147:2
141:2
137:2
114:2
96:2
72:2
52:2
42:2
31:.
20:)
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