三乙胺（C2H5）3N气体检测管213S TRIETHYL AMINE 1-20ppm 返回列表页

三乙胺（C2H5）3N气体检测管213S TRIETHYL AMINE 1-20ppm

Tube No.213S
1. PERFORMANCE
1） Measuring range ：2-20 ppm 1-10 ppm
Number of pump strokes 1/2（50ml） 1（100ml）
2） Sampling time ：1 minute/1 pump stroke
3） Detectable limit ：0.2 ppm
4） Shelf life ：3 years
5） Operating temperature ：0～40℃
6） Reading ：Direct reading from the scale calibrated by 1 pump stroke
7） Colour change ：Pale purple→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：5％　RSD-high：5％
3. CHEMICAL REACTION
By reacting with phosphoric acid, PH indicator is discoloured.
2（C2H5）3N＋H3PO4→〔（C2H5）3NH〕2HPO4
4. CALIBRATION OF THE TUBE
VAPOUR PRESSURE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
6
4
2 1
DEHUMIDIFIER
（White）
10
8
100ml
ppm
213S TRIETHYL AMINE
（NOTE）
In case of 1 / 2 pump strokes, following formula is available for the actual concentration.
Actual concentration＝2×Reading value.
Substance Interference Coexistence
Ammonia Similar stains are produced and Higher readings are given.
higher readings are given.
Other amines 〃〃