Teledyne 4700 Pocket Manual page 56

4700 Refrigerated Sampler
Select YES (the factory default) for
improved sample volume accuracy, and
to enable Rinse Cycles and Sampling
Retries. Select NO to turn off all of these
features and return to the SELECT
OPTION <- -> screen.
3.
Press a Number button to specify how
many rinse cycles should be performed
before collecting a sample.
4.
If the sampler fails to detect liquid, it can
try again to collect the sample. Press a
Number button to specify how many
retries the sampler should attempt.
For most sampling applications you should use
Liquid Detection. Selecting NO may adversely
affect sample volume repeatability and will
turn off Rinse Cycles and Sampling Retries.
You can use Rinse Cycles to condition the
suction line and strainer before collecting a
sample. Rinse Cycles may also improve sample
volume repeatability by ensuring the suction
line is wetted before each sample. One rinse
cycle draws liquid through the suction line
until it reaches the Liquid Detector. Then, the
pump reverses direction and to clear the
suction line.
Note that Rinse Cycles add to the Pump Counts
(section 3.3.9) and requires more frequent
pump tube changes.
3-8
__ RINSE CYCLES
(0-3)
RETRY UP TO ___ TIMES
WHEN SAMPLING (0-3)