Sampling Using the Pump
1)
Break off both ends (tips) of the detector tube by using the provided tube tip breaker or the tube
tip holder (GAS721). In the case of a twin tube, break off both ends of both tubes and connect the
ends of the tubes marked with a
©
using the rubber connector.
How to break off the tube tip
Insert the detector tube end straight into the tube tip breaker, and rotate the
tube for one full turn so that the diamond cuter of the tube tip breaker scratches
the surface of the tube end. Hold the detector tube firmly at a point close to the
tube tip breaker and bend the tube toward the handle to break the tube tip.
2)
Confirm the pump handle is fully pushed in (therefore the guide line on the pump shaft is not
seen). Then insert the detector tube into the rubber inlet of the pump with the arrow ( ) on the
tube pointing toward the pump.
3)
Align the guide mark (red line) on the back plate and the guide mark (
▲
100 or
▲
50) depending
on the handle.
NOTE: The guide mark
▲
100 means a full pump stroke (100ml) and the guide mark
▲
50 means ½
a pump stroke (50ml). You can confirm the number of pump strokes of a given detector tube by
referring to the guide marks on the tube body or by referring to the detector tubes operation
manual (HBE)/Instruction leaflet supplied in a pack of tubes.
