乙炔中磷化氫PH3氣體檢測管121SA PHOSPHINE IN ACETYLENE 20-800

乙炔中磷化氫PH3氣體檢測管121SA PHOSPHINE IN ACETYLENE 20-800ppm

Tube 21SA
1. PERFORMANCE
1） Measuring range ：20-800 ppm
Number of pump strokes 1（100ml）
2） Sampling time ：3 minutes/1 pump stroke with orifice
3） Detectable limit ：5 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 blue→Reddish purple
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：5％　RSD-high：5％
3. CHEMICAL REACTION
By reacting with Mercuric chloride（II）and Cupric sulphate（II）, Mercuric phosphorus chloride and Cupric
phosphate are produced respectively.
Moreover, Cupric phosphide reacts with Acetylene and Copper acetylene is produced.
PH3＋HgCI2＋H2O→Hg3P2?3HgCI?3H2O
PH3＋CuSO4→Cu3P2＋H2O
Cu3P2＋HC≡CH→CuC≡CCu
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY 800
700
600
500
400
300
200
100
50
20
ppm
GAS To pump
121SA PHOSPHINE IN ACETYLENE
Substance Interference ppm Coexistence
Hydrogen sulphide Black stain is produced. 10 Higher readings are given.
Arsine Dim yellow stain is produced. 10 〃
Washer
Connector
holder
Rubber tube
connector
Flow Control Orifice
INDICATOR
6.NOTE
1）In case that Acetylene does not exist, lower readings are given.
2）A flow control orifice（an extra option）is required to attach as shown in the following drawing.

The KITAGAWA Gas Detector Tube System is a complete sampling and analysis system for determining hazardous gas and vapour concentrations quickly and easily. The KITAGAWA Gas Detector Tube System is comprised of an Air Sampling Pump and Precision Gas Detector Tubes.

The KITAGAWA air sampling pump reproducibly draws 100cc of sample air through the detector tube. All detector tubes are calibrated for a single pump stroke; there is no need for multiple volumes or stroke counters.

Each detector tube is formulated with high purity reagents that absorb and react with the target gas or vapour being measured. A colorimetric stain is created that is proportional in length to the concentration. For most tubes, the concentration is read directly off the measurement scale on each tube. 
 How To Use The KITAGAWA Gas Detector Tube System 
 
Detector tubes are available to measure more than 200 different kinds of gases and vapours. For many gases and vapours, there are several concentration ranges available giving you the flexibility to measure both low and high concentrations without sacrificing precision.

For specific information, please refer to the list of detector tubes.