硅烷SiH4氣體檢測管240S SILANE 0.5-50ppm 返回列表頁

硅烷SiH4氣體檢測管240S SILANE 0.5-50ppm

Tube No.240S
1. PERFORMANCE
1） Measuring range ：1-50 ppm 0.5-25 ppm
Number of pump strokes 1（100ml） 2（200ml）
2） Sampling time ：5 minutes/1 pump stroke
3） Detectable limit ：0.3 ppm（200ml）
4） Shelf life ：1 year （Necessary to store in a refrigerated place ; 0～10℃）
5） Operating temperature ：0～40℃
6） Temperature compensation ：Necessary under 20℃（See "TEMPERATURE CORRECTION TABLE"）
7） Reading ：Direct reading from the scale calibrated by 1 pump stroke
8） Colour change ：Yellow→Red
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：10％　RSD-high：10％
3. CHEMICAL REACTION
By reacting with Mercuric chloride, Hydrogen chloride is liberated and PH indicator is discoloured.
SiH4＋HgCI2→HCI
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
50
40
30
20
10
5
2 1 GAS To pump
240S SILANE
Substance Interference ppm Coexistence
Phosphine 2re lda ysetarsin o af rger epyroisdhu wcehdit.e and 20 Higher readings are given.
Arsine 2st alainye arrse o pf rdoadrukc berdo.wn and red 50 〃
Disilane A Similar stain is produced. 2 〃
Diborane 〃20 〃
Ammonia 100 Lower readings are given.
Whole reagent is changed to orange. But
Sulphur dioxide the accuracy of readings are not affected
by Sulphur dioxide if the top of the stained
layer is clear.
IPA Not affected.
Hydrogen 〃
Hydrogen chloride 250 Not affected.
Dichlorosilane 200 〃
（NOTE）
In case of 2 pump strokes, following formula is available for the actual concentration.
Actual concentration＝Temperature corrected value×1/2
TEMPERATURE CORRECTION TABLE
Scale True Concentration （ppm）
Readings 0℃ 10℃ 20-40℃
（ppm） （32°F） （50°F） （68-104°F）
50 38 45 50
40 30 35 40
30 22 26 30
20 14 17 20
10 7 8 10
5 4 4 5
2 2 2 2
1 1 1 1