Carbon monoxide CO NO.1HH


Performance

Measuring Range

1 to 2%

2 to 40%

Number of Pump Strokes

1

1/2

Correction Factor

1/2

1

Sampling Time

1 minute per 1/2 pump stroke

Detecting Limit

0.5% (n=1)

Color Change

White Blackish brown

Reaction Principle

Carbon monoxide reacts with iodine pentoxide
to produce blackish brown stain.
Coefficient of Variation 10% (for 2 to 15 %), 5% (for 15 to 40 %)
Shelf Life 3 Years
Corrections for
temperature & humidity		 Unnecessary
Store the tubes at cool and dark place.


Possible coexisting substances and their interferences (NOTE)

Substance

Concentration

Interference

Change color by itself

Acetylene

0.2%

Puls error

Produce dark brown

Olefines
(Ethylene, Propylene)

2/3

Puls error

Produce brown stain

Butane

1%

Puls error

Produce pale brown
for whole layer

Propane

20%

Puls error


Calibration gas generation High pressure gas cylinder method


TLV-TWA TLV-STEL Explosive range
25ppm - 12.5 to 74%

Copyright(c) 2001 GASTEC CORPORATION. All rights reserved.