Gastec GSP-501FT, Инструкция по эксплуатации

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6.11 Clogging
If the sampling flow rate is smaller than the set value, the pump output will increase. If the pump runs
at maximum output but the instantaneous flow rate is less than 5mL/min for 1 minute, the pump
determines a clog is found and stops the sampling. In this case, the error message "
" is
displayed on the screen.
△
Note

If the pump is used in a low-temperature environment or when the remaining battery level is
low, the power may be turned off even before the sampling is stopped due to clogging. The
sampling results just before sampling is stopped are still recorded.
6.12 Intermittent Operation
When the instantaneous flow rate is set to 10 - 49mL/min in the Volume Mode, the intermittent
operation is performed by sampling at an instantaneous flow rate of 50mL/min.
● About intermittent operation●
The operation mode in which the pump is repeatedly runs and stops as the following cycles so that the
integrated volume becomes the value calculated by multiplying the set instantaneous flow rate by the
elapsed time every minute is called "intermittent operation".
①
Pump starts: The pump runs and the instantaneous flow rate reaches 50mL/min (section A in the
figure below).
(until the integrated volume reaches the value calculated by multiplying the set instantaneous flow
rate by elapsed time)
②
Pump stops: The pump stops, only the status lamp flashes (section B in the figure below)
③
Thereafter, repeat
①
and
②
until the set integrated volume is reached.
Figure: Example of intermittent operation (set instantaneous flow rate: 10 mL/min,
set integrated volume: 0.040L)
△
Note

If there is a sudden change in the gas concentration or if sampling is performed for a short
period of time, the error of the sampling result may be large.