ZFC
page 8
ZFC K03/0522
6.2 Operator Information and functions
In general, the ZFC operates in the
operator mode. The shown information
depends on the settings which are made
in the setup menu.
The signal from the connected sensor is
processed by the ZFC in the background,
independent from the selected display
refresh rate.
For the Operator, the following functions are available:
Display calculated differential flow rate and calculated differential total
This is the main display information of the ZFC. After the selection of any other
information, it will always return to this main display automatically. Total is shown
on the upper line of the display and flow rate on the bottom line. When selected in
the setup menu, the display shows the flow rate only. If you press the select key,
the total shows momentarily.
When "-------" is shown, then the flow rate value is too high to be shown. The
arrows
indicate the increase/decrease of the flow rate trend. If the consumption
is very low, it might be that a stable low flow rate and total is shown; this is due to
the settings of the ZFC.
Clear total
The value for total can be reset. To do so, press the CLEAR/
key twice. When
the key is pressed once, the text "PUSH CLEAR" is shown. To avoid a reset at this
stage, press another key other than the CLEAR/
key or wait for 20 seconds. A
reset of the total does not influence the accumulated total.
Type IB: When a Normally Closed (NC) contact is used, the local clear total
function is disabled and a clear total is only possible with the external
reset command.
Display calculated differential accumulated total
When the SELECT/
key is pressed, total and accumulated total are shown. The
accumulated total cannot be reset. The value will count up to 99,999,999,999. The
unit and number of decimals are shown according to the settings for the total.
Display line temperature and calculated flow rate INLET / OUTLET
When the SELECT/
key is pressed twice, the actual INLET / OUTLET
temperature is shown at the top line of the display. At the bottom line, the
calculated INLET / OUTLET flow rate is shown together with the engineering units
for flow rate and temperature
Range error
As soon as the input value is out of the calibrated PT100 measurement range, the
alarm indicator shows. When the SELECT/
key is pressed a few times, the alarm
code is shown in the alarm display. This alarm is also activated at a wire break or
faulty sensor.
(standard range -100°C - +200°C or extended range, type ZV: -200° - +800°C).
Alarm
When the alarm indicator is shown, refer to chapter 9: Problem Solving.
R
U
N
Process information (typical)
