Sampling of Absorbent

Описание: Sampling of Absorbent

This instruction describes the procedure for sampling the amall amounts of the absorbent to measure the absorbent concentration.

IMPORTANT!
(1) Because a vavum exists inside the Absorption Machine, take great care to ensure that air does not leak into the Absorption Machine when your performing the above work.
(2) Handle the vacuum valve carefully so as not to damage it.
(3) Carefully wash equipment and rubber hose with water to remove dirt before using it in the above work.
(4) Do not discard the solution after measurement. Store it in an empty bottle and return the solution to the Absorption Machine when it becomes full.

Instruments
1. Absorbent Sampling cylinder set (transparent plastic cylinder with Vacuum valve)
2. Vacuum rubber hose.
3. Monkey spanner8" (Adjustable wrench, Length 8 inch)
4. Hydrometer
5. Thermometer

Procedure
(1) Prepare equipment as per Fig.7-1.
(2) Operate purge pump.
(3) Open up No.1. manual air-purge valve.
(4) Open up No.1. service valve.
(5) Open up vacuum valve in sampling cylinder.
(6) Once final pressure becomes about 5mmHg as indicated on mercury manometer, close up vacuum valve.
(7) Close up No.1 service valve and No.1. purge valve.
(8) Remove vacuum rubber hose from No.1. service valve, and connect it to the sampling service valve through which the sampling solution is extracted.
(9) Open up the sampling service valve
(10) Open up vacuum valve on sampling cylinder.
(11) When sampling cylinder becomes full of absorbent, close up the sampling service valve.
(12) Remove vacuum rubber hose from the service valve.
(13) Measure concentration of absorbent after removing the rubber plug from the sampling cylinder.
(14) Upon completion of measurement, pour absorbent into another container, and wash sampling cylinder with water.
(15) When sampling solution from another part of Absorption Machine, repeat steps (2) to (12).
(16) Upon completion of measurement, pour absorbent into another container, and wash sampling cylinder with water.
(17) Stop purge pump.

Thank you.

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