GF Signet 8150 Battery-Powered Flow Totalizer - Manual (Page 15)

15 8150 Flow Totalizer
15. Sensitivity
The SENSITIVITY setting determines how the 8150 responds to sudden surges in the fl ow rate. It "overrides" the SPEED function just
long enough to allow an actual change in fl ow rate to be displayed, then resumes the averaging. The result is a smooth fl ow display
and a quick response to large shifts in the fl ow rate.
10 s 2 s 20 s 30 s 40 s 50 s 60 s 70 s
1
3
6
2 s
2
ENTER
3x
Enter Security code
Example: Change the SENSITIVITY from 5 to 8
1. Hold the ENTER key for 2 seconds, then enter the SECURITY CODE.
The display shows the fi rst item in the menu, AutoCAL.
2. Press the ▲ key once to scroll to SENSITIVITY.
The display shows DISP SENS and the current sensitivity setting.
3. Press the ► key to select the SENSITIVITY for editing.
The current SENSITIVITY setting begins fl ashing.
4. Press the ▲ key three times to scroll from 5 to 8.
5. Press the ENTER key to return to the menu.
6. Press ▲ and ▼ keys together to exit the menu and return to normal operation.
The display shows "Storing" for a few seconds, then returns to the normal operating display.
No SPEED, no SENSITIVITY
SPEED only
With SPEED averaging set to 0 (zero) and with SENSITIVITY set
to zero, the fl ow rate may be very unstable. This line represents
the actual output of the fl ow sensor as it responds to unstable
fl ow conditions in the pipe.
With SPEED set to 60 seconds and SENSITIVITY still set to zero
the fl ow rate is stabilized, but a sharp change in fl ow rate is not
represented for 60 seconds or longer. (dotted green line).
With SPEED at 60 seconds and SENSITIVITY set to 6, the fl ow
rate is stabilized, while the sudden shift in fl ow is refl ected very
quickly (dotted blue line).
NOTE: The SENSITIVITY function is ineffective if the SPEED function is set to zero (seconds).
SPEED and SENSITIVITY