Vega VEGAFLEX 83 Modbus and Levelmaster protocol PFA in Uživatelský manuál stáhnout pdf (Strana 18)

4 Mounting

VEGAFLEX 83 • Modbus and Levelmaster protocol

41838-EN-130314

Fig. 8: Vessel with conical bottom

Plastic vessel/Glass vessel

The guided microwave principle requires a metal surface on the pro-

cess tting. Therefore use in plastic vessels etc. an instrument version

with ange (from DN 50) or place a metal sheet (ø > 200 mm/8 in)

beneath the process tting when screwing it in.

Make sure that the plate has direct contact with the process tting.

When installing rod or cable probes in vessels without metal walls,

e.g. in plastic vessels, the measured value can be inuenced by

strong electromagnetic elds (emitted interference according to

EN 61326: class A). In this case, use a probe with coaxial version.

1 2

Fig. 9: Installation in non-metal vessel

1 Flange

2 Metal sheet

If possible, avoid sockets. Mount the sensor ush with the vessel top.

If this is not possible, use short sockets with small diameter.

Higher sockets or sockets with a bigger diameter can generally be

used. They simply increase the upper blocking distance. Check if this

is relevant for your measurement.

Type of vessel

Socket

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Vega VEGAFLEX 83 Modbus and Levelmaster protocol PFA in Uživatelský manuál Strana 18