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>> 可燃气体检测仪 >> M264313在线有毒气体监测仪 |
| 产品[ M264313在线有毒气体监测仪 ]的详细资料 |
产品型号： |
M264313 |
产品名称： |
在线有毒气体监测仪 |
产品报价： |
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产品特点： |
在线有毒气体监测仪 型号:M264313 |
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在线有毒气体监测仪的详细资料： |
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| 在线有毒气体监测仪 型号:M264313 | | combustible gas detection - upgrade to upper class!
monitoring the environment for explosive gases most of the time you would be looking for hydrocarbons. it is a characteristic of hydrocarbons that they have a number of c - h bonds. these bonds absorb infrared light at a wavelength of 3,4 mm unsaturated hydrocarbons absorb at 3,3 mm . this effect can be used to reliably detect these substances
the most important advantage is that they are resistant against catalyst poisonshigh concentrations. they can even be used in oxygen free atmosphere.
another important advantage of this technology is that a failure cannot go unnoticed. if an important component such as lamp or detector fails, the system will recognise this as 100 absorption an alarm situation. most infrared gas detectors are designed as so - called ndir non dispersive infra red double- beam detectors. this means, the light beam is divided in two portions with different wavelengthes. one is the measuring beam that will be absorbed by gas, the other is a reference beam at a wavelength that will not be absorbed by gas. this beam compensates for intensity variations of the lamp, dirtcorrosion. as the optics takes are mostly self maintained an eventual inspection only checks if there is gas access to the sensor. therefore much longer maintenance interval compared to the catalytic sensor can be justified. as a rule of thumb, twice as long is ok.
infrared gas detection is not restricted to the 0 - 100 lel range. substances with more c - h bonds will absorb more lightthus generate a stronger signal. so fuelssolvents can even be detected in the ppm range. therefore infrared sensors can also be used for other applications such as tlv monitoring, leakage alert systems, active carbon filter break-through or monitoring of the hydrocarbon content of afterburner air supply.
the signal cr-eated by an infrared gas sensor is not linearstrongly temperature dependent. to convert this signal into a standard format that can be handled by a pcs system, it takes a powerful electronicssoftware package. having this on board, it is easy to provide more features making the users life easier. examples are: non intrusive one- man calibration, included gas library where you se-lect the gasmeasuring range you want, display on site, stand - alone design etc.
sure infrared gas detection is upper classthis means more expensive, but this investment pays easily off for a unit focusing on manufacturingnot wanting spend too much capacity on instrumentation maintenance.
such typical high-end instrument is the compur 501 ir. its stainless steel housing in protection class ip 67 will withstand any weather conditionis nearly undestructible. the instrument itself offers any feature you can think of: non intrusive one man calibration without the need of a programming terminal, integrated connection box no extra cost!, intuitive menu, electrical isolation of signalpower supplymany others.
for plants which already have the required combustible gas detection systems there is now a chance for a very cost- effective upgrade: the statox 501 ir lc!
it consists of an eex e enhanced safety terminal boxa sensor with integrated electronics. this sensor operates at the same supply voltage as a catalytic sensor. its output signal is also identical to the signal of a catalytic sensor! this new innovative technical approach keeps the price in the same ballpark as catalytic sensors!
to be precise, all the advantages of an infrared gas detector are now available for nearly the same price as a catalytic sensorexisting gas detection systems can now be upgraded without replacing the existing hardware.
of course the miniaturised chip inside the sensor cannot provide the same powerful electronicssoftware package as a high- end instrument, but however the new compur statox 501 ir lc features the most important advantages of an infrared system. so the next time maintenance is due with your gas detection system check with compur monitors. the investment for an upgrade might pay back within one maintenance interval.
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