22
4.0 Reduced Pump Pulsation: Improved Sensor Precision
This graph shows the effects of the Filter setting on the SciPres
®
monitor and the incoming signal
from the SciPres
®
sensors.
This provides the added benefit of improving the precision and accuracy of the sensor reading
by eliminating the need to interpret between ever changing high and low values caused by
pump-generated pulsation. It makes the processes easier to control and the cleaner graphs
are easier to read.
Data was collected at 1 second intervals. A peristaltic pump running at 100 mL / min was
connected to the SciPres
®
sensors and back pressure was applied.
The Filter setting was changed from 1 through 6 over the course of the run. Data was stable at that
point, and it was not increased further due to lack of noticeable effect at these flows and pressures.
As the Filter setting is increased, a small delay occurs in the response of the filtered data when the
pressure is changing. The maximum delay at a setting of 12 is 4 seconds. A setting of 1 yields “live”
data with no delay and no filtering.
15:27:22 15:28:48 13:30:14 15:31:41 15:33:07 15:34:34 15:36:00 15:37:26
TIME
7.00
6.00
5.00
4.00
3.00
PRESSURE
FILTER-1 FILTER-2
FILTER-3
FILTER-4
FILTER-5
FILTER-6
Pressure versus Time
To Next Page
Loading...