VEGA Capacitive electrodes EL … - Manual (Page 9)

Capacitive electrodes EL … 9
Weight
Basic weight (e.g. EL 24) approx. 1,4 kg
Rod weight approx. 1,4 kg/m
Approvals (deviating technical data)
Supply and signal circuit in classification intrinsic safety EEx ia IIC only for connection to a
certified intrinsically safe circuit with the following max. values:
U
O
= 29 V U
O
= 24 V
I
K
= 116 mA I
K
= 131 mA
P = 841 mW P = 786 mW
Regulation on combustible liquids (VbF)
Formerly the regulation on combustible liquids (VbF) prescribed that systems storing, filling or
conveying combustible liquids must be equipped with a type approved overfill protection. Acc. to
the new edition of VbF of December 1996 the overfill protection must no more be provided with a
type approval acc. to VbF (§ 12 is deleted).
Dependent on the installed oscillator, the effective inner inductances L
i
and effective inner
capacitances C
i
are:
E15 Ex, E17 Ex: L
i
= 0,1 mH C
i
= 9 nF
E18 Ex: L
i
= 0,06 mH C
i
= 4 nF
For electrodes with integral overvoltage protection module type ELB 2-36 in addition an effective
inner inductance L
i
of 0,15 mH and an effective inner capacitance C
i
of 2,5 nF must be
considered.
Product description