Working Environment Measuring Instruments

Air flow indicator
* AS-1
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Flow visualization is common for air flow check in room and function check of local exhaust ventilation, but heat source is not suitable.
The Model AS-1 is designed to check velocity and direction of air flow with a smoke tube (No.301) which reacts with vapour in the air and generates white smoke.
* Composition
 
 
  • Rubber bulb
  • Soft case     * Smoke tube (No.301) is not included.


Air flow indicator (for continuous smoke generation)
* AS-2
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Flow visualization is common for air flow check in room and function check of local exhaust ventilation, but heat source is not suitable.
The Model AS-2 is designed to check velocity and direction of air flow continuously with a smoke tube (No.301) which reacts with vapour in the air and generates white smoke.
* Composition
 
 
  • Rubber bulb
  • Soft case     * Smoke tube (No.301) is not included.


Extension air flow indicator
* AS-3
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Have you ever experienced you were uncomfortable when you had to check air flow with a smoke tube where ventilation fan or hood was unreachable or was located at confined space?
With a switching operation on the pump, air flow check continuously or intermittently up to 2 metres is possible.
* SPECIFICATIONS
 
Model Number AS-3
Pump Diaphragm
Power supply Voltage Dry battery (size AA battery?4)
Operating duration Approx. 4 hours (with Alkaline batteries)
Dimensions Pump : 51(W)?84(D)?67(H) mm, Rod : 2mm at the maximum
Weight 300 g (including batteries)


Smoke tube
* 301
  For flow visualization check of air flow at room or local exhaust ventilation.
Used with Kitagawa Air Flow Indicator Model AS-1/AS-2/AS-3.
Meets OSHA protocol for respirator fit testing.
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Collection Tubes
* Charcoal tube (800B)
image1 800B is designed for sampling and measurement of organic solvents in air with personal sampler for industrial hygiene (conformed to NIOSH requirements).
Sample air containing vapour of organic solvents is passed through a glass tube packed with charcoal which adsorbs the solvent. Adsorbed solvent is recovered with desorption solvent leeching followed by gaschromatographic analysis. Useful for sampling organic solvent vapours.

* Silica-gel tube (801)
image1 801 is designed for sampling organic solvents in environmental air, particularly for polar solvents such as Methanol and Acetone which cannot be sufficiently adsorbed onto charcoal.
Organic solvent vapour is adsorbed onto the silica gel while passing through the tube. Adsorbed solvent is recovered with a desorption solvent followed by gaschromatographic analysis. When sample air corresponding to 60 to 80 & of the amount causing breakthrough is passed, the colour begins to change from blue to pink by the moisture from the silica gel side predicting breakthrough.


Tubes for working environment measurement
* Detector tubes
102SD Acetone 106SC Carbon monoxide 107U Ethyl ether
109U Chlorine 111U Ethyl acetate 111U Isopropyl acetate
112SC Hydrogen cyanide 118SD Benzene 120SB Hydrogen sulphide
120U Hydrogen sulphide 122SD Ethylene Oxide 124SB Toluene
126SB Carbon dioxide 128SD Acrylonitrile 132SC Vinyl chloride
134SB Trichloroethylene 135SA Tetrachloroethylene 138U Butyl acetate
143SB Xylene 145SA 1,2-Dichloroethylene 147S Carbon tetrachloride
150U Isopropyl alcohol 156S Hydrogen fluoride 158SB Styrene
160S 1,1,1-Trichloroethane 153U Isobutyl acetate 178SB Chlorobenzene
183U Cresol 189U 2-Butanol 197U Cyclohexanone
198U Methyl cyclohexanone 196S N,N-Dimethyl formamide 209U Isopentyl alcohol
141SB Carbon disulphide
* Click gas name to download the specification of each detector tube (pdf file at 25-40KB).
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