Gas Detectors
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Typical Applications (See below Application)
- Industrial Hygiene
Gas detector tubes are successfully used for the quick measurement
of harmful gases and vapours in the atmosphere and also the distribution
of their concentration in the working area.
- Fire/Explosion Prevention
Available to prevent fire and explosion by detecting combustible
gases leaked or generated in workplaces, and by foreseeing spontaneous
combustion in coal mines.
- Process Control
In case gases are used as material or intermediates in various
industries, impurities in the gas are measured by gas detector
tubes in order to make products' quality up and production efficiency
up by preventing deterioration of catalysts.
- Air-pollution Source
Flue gases such as Nitrogen compounds, SO2, CO, CO2, HCI and O2
are possible to measure economically together with Model P-10FG
Flue gas sampler for air pollution control.
- Industrial Waste Water
Effluent can be analysed for certain types of pollution. The method
is so simple and quick, accordingly instant checks can be made
almost anywhere.
KITAGAWA,
MODEL APS
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PRINCIPLE |
with Model AP-1 aspirating pump and standard accessories
which are composed of a carrying case, 3 pcs. of rubber tube
connector, 1 pce. of grease and an instruction manual.
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The principle of Kitagawa Gas Detector Tube System is a dry
analysis method that makes an application of a chemical reaction
and a physical absorption. In sampling a gas into a detector
tube, a stained layer can be produced by means of the reaction
of the reagent and gas in the tube. As the gas concentration
is proportional to the length of stained layer, you can easily
read off the concentration on the top of stained layer.
The reading methods of gas concentration are divided into
two ways; a directly reading method of which reading can be
obtained directly from the scale printed on the tube and a
concentration chart method.
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Applications |
The gas detector tube has many applications as stated below and
many advantages which other analysis methods do not have.
- Measurements of working environment: The gas detector tube is
used for measuring quickly concentrations of harmful gases and
vapor in working environment and for grasping their concentration
distributions in work sites. It is also used for the measurement
of comparatively thick harmful gases or vapors in open tanks,
painting rooms, plating tanks, electrolytic cells, storage sheds
and gas leaking places, and the efficiencies of local exhaust
system, overall ventilator and air purifier.
- Measurements for the environmental sanitation of buildings
and offices: In the closed room, the concentrations of harmful
gases as carbon monoxide and carbon dioxide are increased by respiration
of human bodies. Measuring the efficiencies of the ventilation
by using gas detector tube is effective for human bodies and working
efficiencies.
- Measurements for the sanitation of schools and as teaching
material: It is widely used as teaching material for health education,
physical education and science.
- Measurements of pollutants in the atmosphere: In this case,
it is necessary to measure much lower concentration than the allowable
concentration for industrial hygiene. That is because allowable
concentration for living environment should be considered to be
1/10 to 1/100 of that for industrial hygiene. Gas detector tubes
can be also used for this purpose.
- Measurements of pollutants in flue gas: Measurement of pollutants
in flue gas is important for the prevention of air pollution.
The Japanese Industrial Standards(JIS) provides various kinds
of test methods as analysis methods for flue gas, of which the
simplest one is the gas detector tube method, all other methods
being very complicated.
- Measurement of harmful gases is ships: It is used for the measurements
of harmful gases in ships in conformity with the IMO rule.
- Process control: When gas is used as raw material in chemical
and other industries, it happens that a very small quantity of
impurity poisons the catalyst or gives bad effect on the quality
of products. Therefore, it is necessary to measure and control
this very small quantity of impurity. Furthermore, it is necessary
to measure impure gas in products, mixing ratios of gas materials
and composition of exhaust gas. The gas detector tube is used
for testing the purity of gas in this kind of quality control.
- Mine safety: Pit fire or gas explosion caused by the spontaneous
ignition of coals in the pit frequently occurs in mines. Such
spontaneous ignition can be discovered at its early stage by detecting
a very small quantity of carbon monoxide or of ethylene co-existing
with the carbon monoxide by using detector tube. The detector
tube is also used for the measurement of carbon monoxide after
pit fire or explosion.
- Prevention of gas explosion: The concentration of inflammable
gas in air or gas can be measured safely and quickly by the detector
tube method. The measurement does not require any power source
such as battery or heat source, so can be performed without any
danger, providing no ignition source even in the presence of explosive
mixed gas. For instance, tank explosion accident can be prevented
by measuring acetylene generated in the carbide tank or tank lorry.
- Combustion inspection of gas apparatuses: Combustion condition
of gas apparatuses after gas conversion can be inspected by detector
tube for carbon monoxide.
- Measurement of alcohol in drunken person's breath: Breath alcohol
detector tube is used by police stations of the metropolis and
prefectures of Japan for the control of driving by drunken persons.
- Others: Detection of arsenic in foods: measurement of formaldehyde
vapor generated from textile products; measurement of various
kinds of ion.
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NUMERICAL
INDEX OF KITAGAWA DETECTOR TUBES
Tube No. |
Detector Tube |
Tube No. |
Detector Tube |
Tube No. |
Detector Tube |
Tube No. |
Detector Tube |
100 |
Carbon monoxide-length of stain |
101SA |
Cetylene |
102SA |
Acetone |
102SC |
Acetone |
102SD |
Acetone |
103SA |
Sulphur dioxide |
103SB |
Sulphur dioxide |
103SC |
Sulphur dioxide |
103SD |
Sulphur dioxide |
103SE |
Sulphur dioxide |
103SF |
Sulphur dioxide-in flue gas |
104SA |
Ethyl alcohol |
105SA |
Ammonia |
105SB |
Ammonia |
105SC |
Ammonia |
105SD |
Ammonia |
105SH |
Ammonia |
105SM |
Ammonia |
106B |
Carbon monoxide-in presence of ethylene, colour intensity |
106C |
Carbon monoxide-in presence of ethylene and/ or
nitrogen oxides, colour intensity |
106S |
Carbon monoxide |
106SA |
Carbon monoxide |
106SB |
Carbon monoxide |
106SH |
Carbon monoxide |
106UH |
Carbon monoxide-ultra high range |
107SA |
Diethyl ether |
107U |
Diethyl ether |
108B |
Ethylene-colour intensity |
108SA |
ethylene-high range |
109SA |
Chlorine |
109SB |
Chlorine |
109U |
Chlorine |
110S |
Gasoline |
111SA |
Ethyl acetate |
111U |
Ethyl acetate |
111U |
Isopropyl acetate |
112SA |
Hydrogen cyanide |
112SB |
Hydrogen cyanide |
113SA |
n-Hexane |
113SB |
n-Hexane |
*113SC |
n-Hexane |
114 |
Bromine |
115S |
Cyclohexane |
116 |
Chlorine dioxide |
117SA |
Nitrogen dioxide |
117SB |
Nitrogen dioxide |
118SB |
Benzene-in presence of gasoline and other aromatic hydrocarbons |
118SC |
Benzene |
119SA |
Methyl alcohole |
119U |
Methyl alcohol |
120SA |
Hydrogen sulphide |
120SB |
Hydrogen sulphide |
120SC |
Hydrogen sulphide-in presence of sulphur dioxide |
120SD |
Hydrogen sulphide |
*120SE |
Hydrogen sulphide |
120SH |
Hydrogen sulphide |
*120SM |
Hydrogen sulphide |
120U |
Hydrogen sulphide |
120UH |
Hydrogen sulphide-ultra high range |
*120UT |
Hydrogen sulphide |
121SA |
Phosphine in acetylene |
121SB |
Phosphine in acetylene |
121SC |
Phosphine |
121SD |
Phosphine |
121U |
Phosphine |
121U |
Arsine |
122SA |
Ethylene oxide |
122SB |
Ethylene oxide |
122SC |
Ethylene oxide |
123S |
Dimethyl ether |
124SA |
Toluene |
124SB |
Toluene |
125SA |
Propane |
126B |
Carbon dioxide |
126SA |
Carbon dioxide |
126SB |
Carbon dioxide |
126SC |
Carbon dioxide |
126SD |
Carbon dioxide |
126SH |
Carbon dioxide-extra high range |
126UH |
Carbon dioxide-ultra high range |
128B |
Acrylonitrile |
128SA |
Acrylonitrile |
128SC |
Acrylonitrile |
*28SD |
Acrylonitrile |
129 |
Nickel carbonyl |
130U |
tert-Butyl mercaptan |
130U |
Ethyl mercaptan |
*130U |
Isopropyl mercaptan |
130U |
Methyl mercaptan |
130U |
n-Propyl mercaptan |
131 |
Inorganic gas qualitative detector tube |
132SA |
Vinyl chloride |
132SB |
Vinyl chloride |
132SC |
Vinyl chloride |
133A |
Acetaldehyde |
133SB |
Acetaldehyde |
134SA |
Trichloroethylene |
134SB |
Trichloroethylene |
135SA |
Tetrachloroethylene |
135SB |
Tetrachloroethylene |
136 |
Acrolein |
137U |
Hydrogen |
138SA |
Butyl acetate |
138U |
Butyl acetate |
139SA |
Methyl ethyl ketone |
139SB |
Methyl ethyl ketone |
139U |
Methyl ethyl ketone |
140SA |
Arsine |
141SA |
Carbon disulphide |
141SB |
Carbon disulphide |
142S |
Mercury vapour |
143SA |
Xylene |
143SB |
Xylene |
145S |
1,2-Dichloroethylene |
146S |
Phosgene |
147S |
Carbon tetrachloride |
148 |
Methyl acetate |
149SA |
Isopropyl acetate |
150SA |
Isopropyl alcohol |
150U |
Isopropyl alcohol |
151SA |
Propyl acetate |
151U |
Propyl acetate |
152S |
Chloroform |
153SA |
Isobutyl acetate |
153U |
Isobutyl acetate |
154SA |
1,4-Dioxane |
154U |
1,4-Dioxane |
155SA |
Methyl isobutyl ketone |
*155U |
Methyl isobutyl ketone |
156S |
Hydrogen fluoride |
157SA |
Methtyl bromide |
157SB |
Methtyl bromide |
*157SC |
Methtyl bromide |
158S |
Styrene |
159SA |
Oxygen |
159SB |
Oxygen |
*159SC |
Oxygen-Non-heating type |
160S |
Methyl chloroform |
161S |
Furan |
162SA |
Tetrahydrofuran |
162U |
Tetrahydrofuran |
163SA |
Propylene oxide |
164SA |
Methtl mercaptan |
164SH |
Methtl mercaptan |
165SA |
Ethyl mercaptan |
166S |
Ethylene dibromide |
167S |
Hydrogen selenide |
168SA |
1,3-Butadiene |
168SB |
1,3-Butadiene |
168SC |
1,3-Butadiene |
169S |
Chloroprene |
170S |
Pentane |
170S |
Isobutane |
170S |
Heptane |
*171SA |
Formaldehyde |
171SB |
Formaldehyde |
172 |
Chloropicrin |
173SA |
Hydrogen chloride |
173SB |
Hydrogen chloride |
174A |
Nitro-oxide compound |
174B |
Nitro-oxide compound-in flue gas |
175SA |
Nitrogen oxides |
*175SH |
Nitrogen oxides |
175U |
Nitrogen oxides |
176S |
Methyl iodide |
177SA |
Water vapour |
177U |
Water vapour |
178S |
Chlorobenzene |
179S |
Ethyl benzene |
180S |
Dichloromethane |
181S |
Aniline |
*182SA |
Ozone |
*182SB |
Ozone |
182U |
Ozone |
183U |
Cresol |
183U |
Phenol |
184S |
Allyl alcohol |
184S |
Methyl methacrylat |
185S |
Propylene |
186 |
Organic gas checker |
186B |
Organic gas qualitative detector tube |
187S |
General hygrocarbons |
188U |
Isoamyl acetate |
189U |
2-Butanol |
190U |
Butyl cellosolve |
190U |
Ethyl cellosolve |
190U |
Methyl cellosolve |
191U |
Ethyl cellosolve acetate |
192S |
Epichlorohydrine |
193S |
Methyl styrene |
194S |
1,3-Dichloropropane |
195U |
Diacetone alcohol |
196S |
N,N-Dimethyl formamide |
197U |
Cyclohexanone |
198U |
Methyl cyclohexanone |
199U |
Methyl cyclohexanol |
200SA |
Sulphide ion |
200SA |
Sulphide ion |
201SA |
Chloride ion |
201SB |
Chloride ion |
202 |
Iron ion |
203S |
Copper ion |
204S |
Cyanide ion |
205SL |
Salinity |
206U |
Cyclohexanol |
207U |
1-Butanol |
208U |
Isobutyl alcohol |
209U |
Isobutyl alcohol |
210U |
Pentyl acetate |
211U |
Methyl acetate |
211U |
Butyl acrylate |
212U |
Ethyl acrylate |
213S |
Triethyl amine |
214S |
0-Dichlorobenzene |
215S |
p-Dichlorobenzene |
216S |
Acetic acid |
217U |
Furfural |
218U |
Mesityl oxide |
219S |
Hydrazine |
220S |
Formic acid |
221SA |
n-Butane |
222S |
Diethyl amine |
222S |
Trimethyl amine |
223S |
2,2,-Dichloroethyl ehter |
224SA |
Monoethanol amine |
225U |
Isobutyl acrylate |
226U |
Naphthalene |
227S |
Methyl amine |
227S |
Dimethyl amine |
227S |
Ethyl amine |
228U |
1,2,4-Trimethyl benzene |
*229S |
N,N-Dimethylacetamide |
230S |
1,2,-Dichloroethane |
*232SA |
Ethylene glycol |
232SB |
Ethylene glycol |
233S |
Nitric acid vapour |
234SA |
Free residual chlorine |
235S |
1,1-Dichloroethane |
236S |
1,1,2-Trichloroethane |
237S |
Vinyl acetate |
*238S |
Furfuryl alcohol |
*239S |
Carbonyl sulphide |
*240S |
Silane |
*241U |
Isoprene |
*242S |
Diborane |
*243U |
Tetraethoxysilane |
300 |
Air flow indicator tube |
500 |
TWA-Carbon monoxide |
501 |
TWA-Ammonia |
502 |
TWA-Hydrogen sulphide |
503 |
TWA-Sulphur dioxide |
504 |
TWA-Toluene |
600SP |
Compressed breathing air test tube (CO) |
601SP |
Compressed breathing air test tube (CO2) |
602SP |
Compressed breathing air test tube (Oil mist) |
603SP |
Compressed breathing air test tube (H2O) |
604SP |
Compressed breathing air test tube (O2) |
800B |
Charcoal tube |
801 |
Silica-gel tube |
* marked items are New
Detector Tubes. |
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