![Standard Materials based on Measurement Law](images/title_StandardMaterial.gif)
标准气体的种类、范围及精度
TYPE, RANGE OF CONCENTRATION, RANGE OF UNCERTAINTY OF STANDARD GASES
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 |
|