Instruction manual

Mounting & Installation

Page

Chapter

Vögtlin Manual

red-y compact series

Electrical Connection / Power Supply

With the battery-operated devices, mount the battery module. Then the measuring device is ready

for use. The useful life of the battery module is about 2 years, but this depends on use. With

constantly changing flow rates, the useful life may be shorter. We advise you to use only original

battery modules.

With the external power supply and alarm options, you receive a connector cable with loose ends.

The assignment is printed on the cable. You have the option of turning the cable outlet by 180º. To

do this, you open the cover in back by hand and turn the plastic block to the desired direction.

Turning the cable outlet by 180°

The supply voltage must be + 24 Vdc (+/-10%) and have the lowest possible residual ripple. Please

note that voltage drops may occur with longer connecting cables.

Likewise, be aware of possible earth loops when you ground electrically conductive pipes.

Gas Supply

We recommend that you pay close attention to the gas supply line. Contamination in the form of

water, oil or dust are harmful to any measurement principle. Particularly in the case of air supply

with compressor systems, cleanliness cannot always be guaranteed. In case of doubt, install the

appropriate filter. If use-related backflows are to be expected, this filter should also be installed at

the outlet. Please monitor possible pressure loss due to the filter elements.

The gas supply should be oversized and have the capacity of at least twice the flow rate of the

attached measuring device. Monitor the performance of the pressure-reducing unit, as well. Never

install the pressure regulator directly in front of the measuring device.

Check for possible pressure loss along the pipeline system. Flow regulators especially require

defined pressure ratios for proper functioning.

With very low flow rates, pressure reduction is oversized and gas is only periodically fed (on-off

regulation). This becomes evident in the form of periodic fluctuations in the regulation or changes in

the flow rate.

Avoid abrupt pressure buildup in the system. This can lead to damage.

Charge the system with pressure only after establishing the electrical connections.

Be sure to have an inert gas (e.g. nitrogen) available for flushing in the case of dangerous, abrasive

or corrosive gases.

Version

compact_E4_0