Sensidyne AP-20S Instruction Manual - Operating Procedure
Doc No 360-0027-01
10
OPERATING PROCEDURE
Insert detector tube. Insert the
gas detector tube into the
rubber tube connector in the
pump. Make sure the tube’s
arrow is pointing toward the
pump.
Pull the handle. Align the two
red marks on the pump and
shaft handle. Pull the pump
handle to its full 100cc locking
position for a full stroke, or to
the 50cc locking position for a
half stroke.
Draw the sample gas. Take a
sample for the specified time
at the desired sampling point
as shown in the tube
instructions. The sample is
complete when the flow finish
indicator appears.
Return the handle. When the
sample is complete, turn the
handle 1/4 turn (90
°
) to unlock
the handle. Confirm that the
handle remains extended. (If
the handle returns part way, the
sample is incomplete, causing
a low reading). If the detector
tube requires more than one
stroke, push back the handle
and repeat the operation, as
many times as required.
Read the concentration. After the prescribed sample
volume has been drawn, remove the tube from the pump.
Read the concentration and perform any temperature
corrections as described on page 12 and in the tube
instructions.
Sampling Done
Sampling
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