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5.1
Commissioning
Startup and commissioning of mechanical part of flow meter, without programming any
electronic counter
(VZF II and VZFA II). Open valves slowly, fill pipework gradually. Vent the instal-
lation well.
Startup and commissioning of mechanical part of flow meter (VZO, VZOA). Open valves slowly, fill
pipework gradually. Vent the installation well.
Water hammer
must be avoided in order not to damage the flow meter. Inclusions of air cause
measuring errors in all types of flow meter and can damage them during operation.
Check the tightness of the connections watch for leakages. Check if the flow rate of the
installation correspond to the specification of the flow meter.
Function check with electronic display: read the instantaneous flow value.
Should the established flow rate be greater than the specification of the flow meter (Qcont), ei-
ther a flow control valve (throttle) must be inserted behind the flow sensor or a larger size flow
meter must be used.
5.2
Display and operation
The display shows 8-digits with a decimal point or text messages using letters. Units of
measurement and additional items of information are shown with symbols.
The references to these are shown in square brackets, e.g.
[o1VoLum]
.
Use Step key to scroll the menu and to change field values.
Use Enter key to enter submenus and to edit / confirm field entries.
Enter key
Step key
units
actual value
flow bar
options to
actual display
Summary of Contents for CONTOIL VZF II
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