The use of harmful gas detection alarm instrument, the harmful gas detection alarm instrument is a special safety and health detector, used to detect the flammable or toxic gas and vapor content in the air inside the chemical work place or equipment and alarm.
In addition, the air hypoxia detector also belongs to this kind of instrument.
The detection of harmful gases in hazardous chemical places mainly includes the following situations:
Leak detection: alarms for leakage of harmful gas or liquid (vapor) on the equipment pipeline, leak detection of equipment pipeline operation.
Maintenance inspection: After the equipment is replaced, it is necessary to detect the residual harmful gas or liquid (vapor), especially before the fire.
Emergency detection: When an abnormal situation occurs in the production site or an accident is handled, for the sake of safety and hygiene, a detection of harmful gases or liquids (vapors) is required.
Entry detection: When workers enter the hazardous substance isolation operation room, enter the sewage ditch, cable trench or equipment in the dangerous place to operate, they should detect harmful gas or liquid vapor.
Itinerant testing: During the safety and health inspection, harmful gases or liquid vapors should be detected.
Dangerous chemicals must strengthen safety management, improve safety measures, and control hidden dangers of accidents. However, it is impossible to achieve absolute security, and there is still a possibility of a panic. Therefore, the detection and alarm of hidden dangers, and the detection and alarm of harmful gases or liquids (vapors) in hazardous chemical locations are very necessary.
It is of great significance to avoid and control accidents.
First, the classification of harmful gas detection alarm
- Classified by usage method:
① The portable harmful gas detection and alarm instrument integrates sensors, measuring circuits, displays, alarms, rechargeable batteries, air pumps, etc. into a single housing, which is compact, lightweight, and easy to carry. Pump suction sampling can be anywhere Check it out. Pocket instrument is a kind of portable instrument. Generally, there is no suction pump diffusion sampling. It is powered by dry batteries and has a small body.
② Fixed harmful gas detection and alarm instrument This type of instrument is fixed on the scene and continuously detects the corresponding harmful gas (steam) automatically. The harmful gas exceeds the limit and it automatically alarms. Some can also automatically control the exhaust fan.
Fixed instruments are divided into two types: integrated and split.
Integrated fixed harmful gas detection and alarm device: Like portable instruments, the difference is that it is installed on the scene, 220V AC power supply, continuous automatic detection and alarm, and most are diffusion sampling.
Split fixed harmful gas detection and alarm device: The sensor and signal transmission circuit are assembled in an explosion-proof housing, commonly known as a probe, installed on the scene (dangerous place); the second part includes data processing, secondary display, alarm control and power supply, assembly Into a controller, commonly known as a secondary instrument, installed in the control room (safe place), probe diffusion sampling detection, secondary instrument display alarm.
- Classify according to the measured object and sensor principle
① Combustible gas detection and alarm instrument (referred to as explosion detector, one instrument detects multiple combustible gases) Catalytic combustion type combustible gas detection and alarm instrument detects various combustible gases or vapors. Electrochemical toxic gas detection alarm device, detecting CO, H2S, NO, NO2, CL2, HCN, NH3, PH3 and many toxic organic compounds, infrared flammable gas detection alarm device, detecting various flammable gases (depending on filtering technology), semiconductor-type flammable gas detection alarm device, detect a variety of flammable gases. Thermal conductivity type combustible gas detection alarm device, detecting hydrogen gas with large difference between thermal conductivity and air, Toxic gas detection and alarm device (referred to as poison tester, an instrument for detecting a toxic gas) Photoionization type toxic gas detection and alarm device, which detects organic and inorganic compounds with an ionization potential of less than 11.7eV, infrared toxic gas detection alarm device, detecting CO, CO2, etc, semiconductor-type toxic gas detection alarm, detection of CO, etc.
Second, the selection principle of harmful gas detection alarm instrument
- Define the detection purpose and select the type of instrument. In short, the detection of harmful gases has two purposes, the first is to detect explosions, and the second is to detect poisons. The so-called explosion detection is to detect the flammable gas content in dangerous places, and alarm is exceeded to avoid the occurrence of explosion accidents; the drug detection is to detect the toxic gas content in dangerous areas, and the alarm is exceeded to avoid staff poisoning. The test range is 0 to 100% LEL, and the test range is 0 to tens (or hundreds) ppm, which is very different. There are three cases of hazardous gases in hazardous places: first, non-toxic (or low-toxic) flammable, second, non-flammable and toxic, and third, combustible and toxic. The first two cases are easy to determine. The first test is the second test, the second test is the third test. If the third party is exposed to the test, the third party can test the explosion if no one is exposed. For the explosion test, select a flammable gas detection and alarm device, and for the poison test, select a toxic gas detection and alarm device.
- Select the type of instrument for clear testing purpose (portable or fixed). Leak detection for long-term operation of production or storage positions should use fixed detection alarm; other inspections such as maintenance testing, emergency detection, entry detection, and patrol testing should be portable (or compact) instrument. The instrument model contains three main contents: manufacturer, function index and detection principle.
- Identify the test objects, select the best model and choose the model of the instrument. Consider the following principles when selecting the model of the instrument:
① The manufacturer speaks integrity, has a good reputation, and the quality of production is guaranteed. It has passed the ISO9002 quality system certification, has a CMC production license issued by the technical supervision department, and has fire and explosion certification.
② The function index of the selected model must meet the requirements of national standards GB12358-90, GB15322-94, GB16808-1997 and other standards.
③ The test principle of the instrument should be adapted to the requirements of the test object and test environment.
Third, the harmful gas sensor and its characteristics
Overview of Harmful Gas Sensing: Harmful gas sensors are devices that convert the content of harmful gases in the air into electrical signals. The electrical signals generated by the sensors are processed by electronic circuits, amplified, and used in the field by the sensors. They can withstand the influence of various harsh environments and atmospheres, especially the sensors of fixed instruments, which are continuously operated for a long time, and have explosion-proof and power supply capacity restrictions. The requirements for hazardous gas sensors are very strict. After conversion, display and alarm of harmful gas content is realized. It can be seen that the sensor is the basic and core component of the harmful gas detection alarm device, and its quality determines the quality and functional indicators of the harmful gas detection alarm device.
General inspection sensors have the following items: Detection range and resolution; Ability to resist environmental (temperature and humidity) influence; safety, explosion-proof performance; interchangeability and convenient maintenance; small size, light weight; small current, good power saving.
I don’t even know the way I ended up right here, but I believed this submit used to be great.
I don’t know who you might be but certainly you’re going
to a famous blogger if you happen to are not already.
Cheers!
Wow! In the end I got a weblog from where I be capable of actually get valuable information concerning my study and knowledge.
I am in fact delighted to glance at this weblog posts which
carries tons of valuable information, thanks for providing these kinds of information.
Great post. I was checking continuously this blog and I am impressed!
Extremely useful info specifically the last part :
) I care for such information much. I was looking for this particular info for a long time.
Thank you and good luck.
single web site: dating for free – free online dating sites
This web site truly has all the info I needed concerning this subject and didn’t know who
to ask.
prednisone pharmacy prices: http://prednisone1st.store/# 30mg prednisone
A motivating discussion is definitely worth comment. I do think that you need to publish more on this subject, it might not be a taboo matter but usually folks don’t discuss such issues. To the next! Kind regards!!
Very rapidly this website will be famous amid all
blogging visitors, due to it’s pleasant articles or reviews
A person necessarily assist to make severely articles I might state.
This is the very first time I frequented your website page and so far?
I surprised with the analysis you made to create this particular publish incredible.
Wonderful job!
fantastic submit, very informative. I ponder
why the opposite experts of this sector don’t realize
this. You should proceed your writing. I’m sure, you have a
great readers’ base already!
Great blog! Is your theme custom made or did you download it from somewhere?
A design like yours with a few simple tweeks would really make my blog shine.
Please let me know where you got your design. Thanks a lot
If some one desires to be updated with newest technologies after
that he must be visit this website and be up to date every day.
It’s fantastic that you are getting ideas from this article as well as from our discussion made at this time.
There’s certainly a great deal to learn about this subject.
I like all of the points you made.
It’s nearly impossible to find experienced people in this particular subject, but you seem like you know what you’re talking about!
Thanks
It’s a shame you don’t have a donate button! I’d certainly donate to this fantastic blog!
I suppose for now i’ll settle for bookmarking and adding your RSS feed to my Google account.
I look forward to brand new updates and will talk about this website
with my Facebook group. Chat soon!
whoah this weblog is fantastic i really like studying your
articles. Stay up the great work! You understand, a lot of persons are
hunting round for this information, you can aid them greatly.
These are genuinely fantastic ideas in concerning blogging.
You have touched some nice factors here. Any way keep up wrinting.
Экспресс-строения здания: прибыль для бизнеса в каждом строительном блоке!
В современном обществе, где время равно деньгам, сооружения с быстрым монтажем стали решением по сути для предпринимательства. Эти современные сооружения обладают солидную надежность, финансовую экономию и молниеносную установку, что придает им способность превосходным выбором для различных коммерческих проектов.
[url=https://bystrovozvodimye-zdanija-moskva.ru/]Быстровозводимые здания[/url]
1. Ускоренная установка: Секунды – самое ценное в коммерческой деятельности, и скоростроительные конструкции позволяют существенно сократить время монтажа. Это значительно ценится в моменты, когда срочно нужно начать бизнес и получать доход.
2. Экономия: За счет оптимизации производства и установки элементов на месте, экономические затраты на моментальные строения часто уменьшается, чем у традиционных строительных проектов. Это позволяет сократить затраты и обеспечить более высокий доход с инвестиций.
Подробнее на [url=https://bystrovozvodimye-zdanija-moskva.ru/]scholding.ru[/url]
В заключение, объекты быстрого возвода – это великолепное решение для коммерческих инициатив. Они комбинируют в себе быстрое строительство, экономическую эффективность и долговечность, что обуславливает их превосходным выбором для предпринимателей, ориентированных на оперативный бизнес-старт и выручать прибыль. Не упустите возможность получить выгоду в виде сэкономленного времени и денег, оптимальные моментальные сооружения для вашего следующего делового мероприятия!
Наша команда профессиональных исполнителей предоставлена предоставить вам прогрессивные технологии, которые не только ассигнуруют надежную оборону от зимы, но и преподнесут вашему жилищу изысканный вид.
Мы эксплуатируем с самыми современными веществами, заверяя прочный термин службы и замечательные итоги. Изоляция наружных поверхностей – это не только экономия ресурсов на отапливании, но и внимание о природной среде. Энергосберегающие методы, которые мы производим, способствуют не только вашему, но и сохранению природной среды.
Самое главное: [url=https://ppu-prof.ru/]Утепление фасада цена[/url] у нас составляет всего от 1250 рублей за квадратный метр! Это доступное решение, которое изменит ваш жилище в истинный теплый район с небольшими издержками.
Наши проекты – это не только изоляция, это формирование площади, в где каждый аспект показывает ваш свой модель. Мы примем во внимание все ваши пожелания, чтобы переделать ваш дом еще еще больше удобным и привлекательным.
Подробнее на [url=https://ppu-prof.ru/]https://ppu-prof.ru/[/url]
Не откладывайте заботу о своем квартире на потом! Обращайтесь к исполнителям, и мы сделаем ваш жилище не только тепличным, но и изысканнее. Заинтересовались? Подробнее о наших услугах вы можете узнать на веб-сайте. Добро пожаловать в пределы уюта и высоких стандартов.
zithromax z pak dosage
side effects metformin
furosemide or spironolactone
does flagyl expire
zoloft dosage anxiety
lisinopril cause cough
lasix for kidney failure
glucophage lantus
how to give a cat gabapentin capsules
amoxicillin clavulanate 875
gabapentin ingredients
escitalopram nebenwirkungen
shelf life of cephalexin
bactrim dosage
is bactrim an antibiotic
cephalexin side effects
gabapentin how long does it take to work
citalopram and duloxetine
ddavp dilution
cozaar 100 mg
depakote toxicity symptoms
buspirone vs citalopram
ddavp fever
half life of augmentin
weed and effexor
fio pesca flomax
stopping contrave suddenly
flexeril controlled
allopurinol alternatives natural
too much aspirin
aripiprazole 2 tablet
celebrex shelf life
bupropion libido
augmentin and milk
is baclofen
is celecoxib a painkiller?
buspirone tablets used
celexa lexapro
ashwagandha organic india
actos epocrates
abilify pregnancy category
acarbose dimagrire
70 units of semaglutide
seroquel and remeron
repaglinide drug profile pdf
protonix dr
robaxin 750 mg dosage
remeron interactions
repaglinide plus metformin
can protonix be crushed
synthroid pimples
sitagliptin uses in telugu
spc spironolactone
synthroid nails
ivermectin uk buy
tamsulosin and heart rate
will taking voltaren with extra strength excedrin cause stomach pain
what is tizanidine used to treat
venlafaxine dosage for anxiety
zyprexa addiction
is there a generic for zetia
drug information on zofran
mexican rx online: cheapest mexico drugs – reputable mexican pharmacies online
online shopping pharmacy india http://indiaph24.store/# mail order pharmacy india
top 10 online pharmacy in india
zyprexa lawsuit 2015
generic to zofran
wellbutrin extended release half life