Vega VEGATOR 631 Ex Operating Instructions Manual page 22

6 Set up
Mode switch
22
You can find the electrical connection of VEGATOR 631 Ex in the
operating instructions manual of the corresponding signal conditioning
instrument.
Line monitoring
With Ex versions, this 220 kΩ resistor is already integrated ex factory in
the connection housing of the probe. The Ex measuring system (max.
and ground connection cable of the probe to the signal conditioning
instrument) is generally monitored for line break.
You can set mode A or B by means of the selection switch.
Mode A
Preferrably as overflow protection, compulsory as overfill protection.
Fig. 14: Mode A - Overfill protection
Means with covered max. electrode:
Relay deenergises, connection 12 - 13 is connected through relay
l
Transistor output blocks
l
Control lamp - Output extinguishes
l
Means with uncovered max. electrode (level detection) or min.
electrode (two-point control):
Relay energises, connection 12 - 14 is connected through relay
l
Transistor output is conductive
l
Control lamp - Output lights
l
VEGATOR 631 Ex • Signal conditioning instrument
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