Common Mistake with Rubber Tube and Gas Detectors
When intended to reach certain depth for measuring the gas, you are advised to use a rubber tube.
Rubber tube is connected to the gas detector which usually has a suction pump for the suction of air from the designated level.
A common mistake is to connect the rubber tube while the pump is on and then inserting thr tube down to the target level. This simply makes suction of gases from all the way through till reaching to the target level.
To avoid this error, please insert the tube first to the required target level where you want to measure the gas and then connect it to the pump opening at the side of the gas detector.
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