GASTEC 21LA Carbonyl Sulphide Detector Tube Instruction Manual

GASTEC 21LA Carbonyl Sulphide Detector Tube

No.21LA Carbonyl Sulphide Detector Tube

The No.21LA Carbonyl Sulphide Detector Tube is a device used to detect the concentration of carbonyl sulphide gas in the air. It is designed to be used with the Gastec Gas Sampling Pump and Gastec Detector Tubes only for the purposes specified in the instruction manual.

Product Safety

For safe operation, it is essential to read the instruction manual carefully. It is also important to note that:

• Only Gastec detector tubes should be used with the Gastec pump.
• Non-Gastec parts or components should not be interchanged or used with Gastec’s detector tube and pump system.
• Using non-Gastec parts or components in Gastec’s detector tube and pump system or using a non-Gastec detector tube with a Gastec pump or using a Gastec detector tube with a non-Gastec pump may cause serious injuries, damage to the detector tube and pump system, and void all warranties and guarantees regarding performance and data accuracy.
• When breaking the tube ends, keep away from eyes. Do not touch the broken glass tubes, broken pieces, and reagent with bare hands.
• The tube must be positioned in the desired sampling area for the entire sampling time or until the flow finish indicator indicates the end of the sampling.

Measurement Procedure

The measurement procedure involves:

1. Checking the leakage of the pump by inserting a freshly sealed detector tube into the pump and following the instructions provided with the pump operation manual.
2. Breaking the tips off the fresh primary tube and secondary tube by snapping off each tube end in the tube tip on the handle.
3. Pulling the handle all the way out until it locks at one pump stroke (100 mL) and waiting for three minutes.
4. For smaller measurements less than 5 ppm, repeating the above sampling procedure one more time until the desired measurement is obtained.
5. For checking the leakage of the pump, insert a freshly sealed detector tube into the pump. Follow the instructions provided with the pump operation manual.
6. Break the tips off the fresh primary tube and secondary tube by snapping off each tube end in the tube tip breaker of the pump.
7. Connect the © marked ends with rubber tubing after snapping off each end.
8. Insert the analyzer tube securely into pump inlet with the arrow ( ) on the tube pointing toward the pump.
9. Make certain the pump handle is all the way in. Align the guide marks on the pump body with the guide marks on the handle.
10. Pull the handle all the way out until it locks at one pump stroke (100 mL). Wait three minutes.
11. For smaller measurements less than 5 ppm, repeat the above sampling procedure one more times until the stain reaches the first calibration mark. For measurements higher than 50ppm, prepare a fresh tube and perform a half pump stroke.
12. Read the concentration level at the interface where the stained reagent meets the unstained reagent.
13. If temperature correction is necessary, obtain the true concentration by using the temperature correction factor. Afterwards multiply the correction factor of pump strokes if necessary.
14. If pressure correction is necessary, use the pressure correction formula.

Correction for Temperature, Humidity, and Pressure

Temperature can be corrected using the table provided in the instruction manual. No correction is required for humidity between 0 – 90% R.H. To correct for pressure, use the formula provided in the manual.

• Temperature : Correct for temperature with the table below.
• Humidity :  No correction is required between 0 – 90% R.H.
• Pressure :  To correct for pressure, use the formula below

Tube Reading* (ppm) ×1013 (hPa)̶Atmospheric Pressure (hPa) This value is after other correction(s), if any, are applied

Interferences

The No.21LA Carbonyl Sulphide Detector Tube may show positive results due to other substances not listed in the table of interference gases provided in the instruction manual. If more information is needed, please contact Gastec representatives or distributors in your territory.

If the primary tube is totally discolored, the analyser tube will be discolored white due to the effect of hydrogen sulphide This table of interference gases primarily expresses the interference of each coexisting gas in the concentration range, that is equivalent to the gas concentration. Therefore, the test result may show positive results due to other substances not listed in the table. If more information is needed, please contact us or our distributors in your territory.

Disposal Instructions

The reagent of the tube does not use toxic substances. When disposing of the tube, follow the rules and regulations of your local government.

Warranty

If you have any questions regarding gas detection and the quality of the tubes, please feel free to contact your Gastec representatives.  reagent of the tube does not use toxic substances. When
disposing the tube regardless of whether it has been used or not, follow the rules and regulations of your local government. If you have any questions regarding gas detection and the quality of the tubes, please feel free to contact your Gastec representatives

FOR SAFE OPERATION

Carefully read this manual and the instruction manual of your Gastec Gas Sampling Pump.

WARNING

1. Use only Gastec detector tubes in a Gastec pump.
2. Do not interchange or use non-Gastec parts or components in Gastec’s detector tube and pump system.
3. Using non-Gastec parts or components in Gastec’s detector tube and pump system or using a non-Gastec
   detector tube with a Gastec pump or using a Gastec detector tube with a non- Gastec pump may damage your detector tube and pump system, or may cause serious injuries, or death to the end-user. It will also void all warranties, and guarantees regarding performance and data accuracy.

CAUTION:
If you do not observe the following precautions, you may suffer injuries or damage the product.

1. When breaking the tube ends, keep away from eyes.
2. Do not touch the broken glass tubes, broken pieces and reagent with bare hand(s).
3. The sampling time represents the time necessary to draw the air sample through the tube. The tube must be positioned in the desired sampling area for the entire sampling time or until the flow finish indicator indicates the end of the sampling.

NOTES:
For maintaining performance and reliability of the test results, observe the following

1. Use Gastec Gas Sampling Pump together with Gastec Detector Tubes only for the purposes specified in the instruction manual of the detector tube.
2. Use this tube within the temperature range of 0 – 40°C (32 – 104°F).
3. Use this tube within the relative humidity range of 0 – 90%.
4. This tube may be interfered with by the coexisting gases. Please refer to the table “INTERFERENCES” below.
5. The shelf life and storage condition of the tube are marked on the label of the tube box.

APPLICATION OF THE TUBE : Use this tube for detecting carbonyl sulphide in the air or in industrial areas and for determining the environmental atmospheric condition

SPECIFICATION

(Because of Gastec’s commitment to continued improvement, specifications are subject to change without notice.)

Coefficient of Variation : 10% (for 5 to 10 ppm), 5 % (for 10 to 50 ppm)

• Shelf Life : Please refer to the validity date printed on the tube box.
• Store the tubes at 10°C (50°F) or below in a refrigerator

Manufacturer : Gastec Corporation 8-8-6 Fukayanaka, Ayase-City, Kanagawa 252-1195, Japan https://www.gastec.co.jp/ Telephone +81-467-79-3910 Facsimile +81-467-79-3979

References

• GASTEC CORPORATION | For all types of gas and vapour

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