Installing The Meters; Preparing For Installation; Installing The Meter In The Pipe - aqua metro CONTOIL VZO Instructions De Montage Et Mode D'emploi

Installing the meters

Preparing for installation

Check meters and installation material.
Compare the data of the meter with the expected maximum conditions of the installation. They may not exceed the meter specifications:
• Maximum flow rate (Q l/h)
max
• Maximum operating pressure (PN bar)
• Maximum temperature (°C)
• Appropriate connections( threaded, or flanged) and seals (gaskets)
• Fasteners for the meter
• Resistance to liquid to be metered and temperature.
Note: Flush the pipework until no residues are left.
When existing plants are altered:
Flush the installation and put it out of operation. Close the stop valves of the section containing the meter.
Make sure that unauthorised start-up is not possible while mounting.
The applicable working regulations must be complied with during all work on the plant.
Prepare the pipe and connections for the meter in the specified length for installation, and install a matching intermediate piece with a
dirttrap where appropriate.
Start trial operation; open the stop valves slowly when doing this.
• Carry out a pressure test in the plant.
• Check for leak tightness.
• Flush the pipework until no residues are left.
• Release the pressure and stop the plant again.
This trial operation ensures that the pipework is tight and clean.

Installing the meter in the pipe

Remove the protection plugs or caps from the meter (inlet and outlet).
Measurement of heavy fuel oil with VZF/VZO 20 or 25:
If a dirt filter with a mesh size of max. 0.5 mm is installed, the safety filter may be removed from the meter inlet to reduce the pressure loss.
Insert the meter into the pipeline in the prescribed position and flow direction. The arrow on the flow sensor should correspond with the
direction of flow. Install mating flanges parallel and without tension in the pipe.
Meter with threaded ends
For pipes made of copper or thin-walled steel pipes, the meter requires additional fastening. Use appropriate fasteners.
If another pressure test is done after mounting the meter, the following pressures are acceptable for a short duration:
Nominal pressure (PN) Maximum test pressure
16 bar 25 bar
25 bar 40 bar
40 bar 64 bar
Meter with flanges
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