VEGA VEGASWING 83 fail safe and signal conditioning instrument VEGATOR 526 Ex - Manual (Page 6)

6 VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe
1.3 Recurring test acc. to WHG
Acc. to the general type approval Z-65.11-31 the sensor must neither be removed nor controlled
for the annual recurring test acc. to WHG.
Due to the certified fail-safe condition of the overfill protection (AK5 acc. to DIN␣ V 19␣ 250) the
recurring test for the instrument and the transmitter (signal conditioning instrument) is not
required. Hence the test of the overfill protection is reduced to the function test of the
connected system parts. This can be made, e.g. by interruption of the circuit to the signal or
control system.
Note the instruction under “3.4 Connection plan VEGATOR 526 Ex“.
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