1, the principle and use method of the specific gas detection tube
principle
The basic measuring principle of CO, CO2, H2S, O2, SO2 and NH3 is linear colorimetric method, that is, the color of the tested gas is colored through the verification tube and the indicator glue, forming the color changing layer (chromatic column). The length of the chromatic layer is directly proportional to the concentration of the tested gas.
2. Main technical parameters (see table)
3, annex (each box)
(1) a section of rubber tube; 3 x 5, length 20cm
A piece of small grinding wheel
4. Condition of storage and transportation
This product should be kept in the cool and dry place, strictly prohibit sunlight, the preservation temperature is not more than 40 degrees, glass products, careful and light.
5. Methods of use
All kinds of calibrating tubes can be used with the cylinder type positive pressure sampler for CZY-50 type gas verification pipe.
To determine the site with air flush sampler, a certain volume of air field, the test tube ends with a short cut, a lower end of the hose pipe test (concentration scale with the "0" end) connected to the sampler (detector) outlet, according to the prescribed time uniform through verification tube, and then press the test tube color column (or color ring) is indicative of the number, directly read% of the concentration of measured gas.