Status Screens; Nimh Power Screen; Primary Flow - GF PF220 V2 Betriebsanleitung

Status screens

As mentioned in the previous section on Alarm Mode, the value of Signal can only be zero (no signal) or 1 (signal present). This
could be used to generate an audible alarm if the signal is lost. To do this, set the lower frequency to be 100Hz and lower value to
be 0 and the upper value to be 1 at a frequency of 0Hz. This will cause the output to be steady when a signal is present and to be
100Hz when signal is lost.
10 Status screens
10.1

NiMh Power Screen

The NiMh power screen is for the monitoring and diagnosis of battery status only, for example, if it is suspected that the battery is
not charging correctly. To view the screen:
10.1.1 Power checklist
When viewing the NiMH Power Board Screen:
• Check to see if the Charging Supply is On (the adaptor is connected) and that the Charger Voltage is 11VDC or greater. This
can also be checked in the status line at the top of the screen by the presence of a plug symbol if an external adaptor is
plugged in.
• The battery charger uses a dedicated NiMH charging circuit. If the Charging field displays Yes, then check the Battery Current.
It should show a positive value of around 1800mA or greater. If the current switches between zero and some intermediately
large value it may indicate that the battery is approaching full charge, or the circuit is trying to ascertain if the battery is
nearing
end-of-life and needs to be replaced. If the battery is charging, the battery symbol in the status line at the top of the screen
will cycle though various levels.
• When charging, the Battery Voltage will depend on the charge state. A nearly full battery will be
in the region of 7.5 to 8.0VDC.
• Battery Temperature should at no time exceed 65 ⁰C or approximately 150 ⁰F.
• If the charger is removed and the device is running on internal power, the battery current will read negative and should be in
the region 250 to 300mA depending on whether the backlight is
on or off.
If it is suspected that there may be problems with the internal battery contact your GF sales
representative.
10.2

Primary flow

The Primary Flow screen summarises the flow totals and provides options for their display on the Flow Reading screen. To view
the Primary Flow screen:
Damping Time and Damping Mode are duplicates of the setting found in the System menu.
Signal-loss Timeout: Once a signal has been acquired, it is deemed to have been lost when the power and SNR ratio are insufficient
for longer than the Signal Loss Time-out setting.
Flow Direction allows you to reverse the sensor direction assignments. Changing flow direction may result in a small difference in
the magnitude of the reading observed.
50
1. From the Main menu, use the Up and Down scroll keys
to select Setup Instrument. Press the ENTER Key. The
Options screen is displayed.
Use the Up and Down scroll keys to select Power.. Press
2.
the ENTER Key.
1. From the Main menu, use the Up and Down scroll keys to
select Setup Instrument. Press the ENTER Key. The Options
screen is displayed.
2. Use the Up and Down scroll keys to select
Primary Flow. Press the ENTER Key. The
Primary Flow screen is displayed.
The screen displays the forward and reverse flow totals: Fwd Total
and Rev Total.
To change the display of forward and reverse totals on the Flow
Reading screen, select Display Total. The options are: Both, None,
Fwd Total and Rev Total.
Operating Instructions