酸度計(jì)測(cè)量?jī)x testo 206-pH1
testo 206-pH1 面議上海豫東電子科技有限公司
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更新時(shí)間:2021-01-04 16:02:19瀏覽次數(shù):140次
聯(lián)系我時(shí),請(qǐng)告知來(lái)自 儀表網(wǎng)簡(jiǎn)單介紹: 氮氧化物檢測(cè)管10 Nitrogen oxides,Name of Gas Nitrogen Dioxide (NO2) Nitric oxide (NO) Measuring Range 2.5 to 200 ppm 2.5 to 5 ppm 5 to 200 ppm,氨氣、苯、一氧化碳、硫化氫、二氧化硫、*、二氧......
| Performance |
Name of Gas | Nitrogen Dioxide (NO2) | Nitric oxide (NO) | |
Measuring Range | 2.5 to 200 ppm | 2.5 to 5 ppm | 5 to 200 ppm |
Pump Strokes | 1 | 2 | 1 |
Correction Factor | 1 | 1/2 | 1 |
Sampling Time | 1 minute per pump stroke | ||
Detecting Limit | 0.5 ppm (n=1) | 1 ppm (n=2) | |
Color Change | White → Yellowish orange | ||
| Reaction Formula | NO2 tube: | ||
| Coefficient of Variation | NO2 tube: 10% (for 2.5 to 20 ppm), 5% (for 20 to 200 ppm) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity | NO2 tube:Unnecessary | ||
| Store the tubes at cool and dark place. | |||
| Possible coexisting substances and their interferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Nitrogen monoxide | - | No effect | Produce red belt at demarcation |
Hydrogen chloride | - | Unclear demarcation | No discoloration |
Ozone, Halogens, | 1/5 | 20% Plus error | Produce yellowish orange stain |
Sulfur dioxide | 50 ppm | Unclear demarcation | No discoloration |
Substance | Concentration | Interference | Change color by itself |
Hydrogen chloride | - | No effect | No discoloration |
Ozone, Halogens, Chlorine dioxide | - | No effect | No discoloration |
Sulfur dioxide | - | No effect | No discoloration |
Nitrogen dioxide | - | No effect | No discoloration |
| Other substance measurable with this detector tube |
| Calibration gas generation | Permeation tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| NO2:3ppm NO:25ppm | NO2:5ppm | - |
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