6 Operation
6.1
Setting the flow rate
The currently measured flow rate is displayed in the
Modules
Through-
flow control
menu under the
Flow rate
menu item. A setting cannot be made
in the
Flow rate
menu item.
1.
Press the [Enter key] on the constant temperature equipment to
open the menu.
2.
Select the menu items
Modules
Through-flow control
Setpoint
.
The entry window opens.
You can see the permissible limit values
Max:
and
Min:
as well as
the set point currently set for the flow rate. The value is provided
in l/min.
3.
Enter the desired set point and confirm the entry with [OK].
The flow controller adjusts the flow to the new set point. It may
take up to one minute before the new set point is reached.
6.2 Pressure limitation
The pressure limitation is used to protect pressure-sensitive applications
by limiting the supply pressure. It is available when through-flow control is
activated and is based on the supply pressure measured at the outlet of the
flow controller.
When the pressure limitation is switched on, the system continues to regu-
late to the desired flow set point as long as the supply pressure remains
below the set pressure limitation. If the supply pressure exceeds this limit,
the constant temperature equipment regulates until the supply pressure
corresponds to the value of the pressure limit.
You set the values for maximum pressure and pressure limitation in the
Pump
menu:
Max. pressure
The maximum pressure value must be lower than the bursting pres-
sure of the connected application.
If the set maximum pressure is reached during operation, the
constant temperature equipment switches off and signals the
overpressurealarm.
Fig. 14: Through-flow control menu
Fig. 15: Setting the flow rate set point
V2
Flow controller MID 80
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