Instruction manual

Mounting & Installation

Page

Chapter

Vögtlin Manual

red-y compact series

Mounting & Installation

General Tips

Check the packet for external damage and contact us immediately in the case of visible damage.

Compare the contents of the packet with the delivery slip and check for completeness and technical

compliance.

This product is a high-precision measuring instrument. We advise you to select the installation site

carefully and to follow the instructions and suggestions below.

Before installation, be sure that the data on the nameplate corresponds to the use, and that the

maximum pressure occurring in the system are lower than the specified test pressure of the device.

Installation Position/Location

We recommend a horizontal installation position. With higher pressure(> 5 bars), depending on the

medium, an additional offset error can occur with a vertical installation position. Check that no heat

sources or electrical sources with strong emissions are found near the measuring device. Avoid

constant vibrations or other disturbing mechanical effects (stress).

If there is a risk of fluid backflow during malfunction, then you should not mount the measuring

device at the lowest point of the pipe.

Mechanical Pipes

The pipe work is very important, and this is often underestimated. Inlet paths, dead volume of the

correct amount, proper grounding, clean pipes and leak-free connections have a decisive effect on

the quality of the measurement.

Be sure that the piping used is absolutely clean.

Use suitable pipe materials (compressive strength, durability).

With permanent pipes, it is also recommended that the device be fixed with the mounting holes

provided for this.

Avoid, when possible, a 90° angle directly at the inlet. If there is no other possibility,

consult your sales partner.

Use appropriate fittings, which are preferably sealed with o-rings on the front side against

the body of the device. Please do not hold on the housing while tightening the fittings.

Never use liquid sealant! If it has not hardened, it can spread all through the measuring device

during flow.

Optimize the pipe length between pressure reducing unit and flow meter. A certain dead volume

must be available with high flow rates in particular. The pipe diameter must likewise be adapted

to the flow rate. Pipe sections that are too small cause high pressure loss and can impair the

operation of the device.

Check the piping for any leaks.

The measuring devices have a flow rectifier. Nevertheless, with high flow rates (> 50 ln/min),

we recommend that you install an inlet path (10 times pipe diameter).

With critical applications (e.g. consumption metering with gas supply), we recommend the

installation of a bypass system with which you can continue to draw gas in the case of service

or repairs.

Version

compact_E4_0