| Type | Range of Concentration | Range of Uncertainty(%) | |||
|---|---|---|---|---|---|
| Standard Gases Class1 | Standard Gases Class2 | ||||
| CH4-Air | 1ppm≦ | CH4 | ≦50ppm | ±1.0 | ±2.0 |
| C3H8-Air | 3.5ppm≦ | C3H8 | ≦500ppm | ±1.0 | ±2.0 |
| C3H8-N2 | 150ppm≦ | C3H8 | ≦1.5% | ±1.0 | ±2.0 |
| CO-N2 | 3ppm≦ | CO | ≦50ppm | ±1.5 | ±2.5 |
| 50ppm＜ | CO | ≦15% | ±1.0 | ±2.0 | |
| CO2-N2 | 300ppm≦ | CO2 | ≦16% | ±1.0 | ±2.0 |
| NO-N2 | 0.5ppm≦ | NO | ≦1ppm | - | ±5.0 |
| 1ppm＜ | NO | ≦30ppm | ±1.5 | ±2.5 | |
| 30ppm＜ | NO | ≦5% | ±1.0 | ±2.0 | |
| NO2-Air | 5ppm≦ | NO2 | ≦50ppm | ±5.0 | - |
| O2-N2 | 1%≦ | O2 | ≦25% | ±1.0 | ±2.0 |
| SO2-N2 | 0.5ppm≦ | SO2 | ≦1ppm | - | ±5.0 |
| 1ppm＜ | SO2 | ≦50ppm | ±1.5 | ±2.5 | |
| 50ppm＜ | SO2 | ≦1% | ±1.0 | ±2.0 | |
註 (Notes)
1级标准气体,是指标准气体中的全部数值,在指定校正机构实施浓度可靠性实验时,其测定浓度在表里精度
栏中1级标准气体精度以内。
Standard Gases Class 1 are standard gases where every cylinder fits the Standard Gases
Class 1 column numbers when tested for concentration at the government agency.
2级标准气体,是指标准气体中提取三分之一后,在指定校正机构实施浓度可靠性实验时,其浓度在表里精度
栏中2级标准气体精度以内。
Standard Gases Class 2 are standard gases where one out of three is taken out to be tested and fits the
Standard Gases Class 2 column numbers when tested for concentration at the government agency.
零位調整標準ガス（ゼロガス）の種類及び品質
TYPE & QUALITY OF ZERO GAS
| 種類 Type |
品質 | Quality |
|---|---|---|
| 発生源用零位調整標準ガス （空気又は窒素） For the source of pollution (Air or N2) |
抜取試験を実施したとき、共存成分が CH4 0.5ppm以下、 CO 1.0ppm以下、 CO2 1.0ppm以下、 SO2 0.1ppm以下 及びNO+NO2 0.1ppm以下のもの |
Coexisting gases shall be: not more than 0.5ppm for CH2 not more than 1.0ppm for CO not more than 1.0ppm for CO2 not more than 0.1ppm for SO2 not more than 0.1ppm for NO+NO2 |
| 環境用零位調整標準ガス （空気） For Environment (Air) |
抜取試験を実施したとき、共存成分が SO2 0.005ppm以下 及びNO+NO2 0.005ppm以下のもの |
Coexisting gases shall be: not more than 0.005ppm for SO2 not more than 0.005ppm for NO+NO2 |
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