Endress+Hauser Flowfit CYA27, Руководство по эксплуатации

Страница: 21 / 52

Flowfit CYA27 Installation
Hauser 21
5.3.5 Automatic cleaning of the assembly via the dosing module
For the metered addition of a cleaning agent or an acid (to acidify a medium), the
following is required at a minimum:
• an assembly with dosing module,
• a feeder tank for the liquid to be dosed and
• a dosing pump.
Valves are optional and may be necessary depending on the type of pump and vessel.
1 2 3 4 5
6
7
A0043892
1 (Feeder) vessel for cleaning or acid solution (not included in scope of delivery)
2 Valve (optional, not included in scope of delivery)
3 Dosing pump (not included in scope of delivery)
4 Valve (optional, not included in scope of delivery)
5 Assembly with dosing module
6 Media inlet of the assembly
7 Media outlet of the assembly
Time-based control of dosing can be achieved by switching on the dosing pump via a
transmitter, e.g. a CM44x with relay card.
For detailed information on connection and the electrical specifications, see the Operating
Instructions of the transmitter.
Measured values, e.g. pH value or conductivity, of installed sensors may change due to
the type and composition of the added solutions, acids or cleaning agents. This may
have undesired effects on processes that are controlled by these measured values.
Changes in the measured values and their effects on a controller should be taken into
account at all times. Alternatively, a test is recommended prior to implementation.