VEGA VEGAMET 514… D - Manual (Page 11)

VEGAMET 514… D 11
1.6 Ex-technical data
Power supply
Operating voltage U
nenn
corresponds to the not-Ex-version
Limit voltage U
nenn
= 250 V AC or 125 V DC
Measuring data input (intrinsically safe circuit)
Classification [EEx ia] IIC, [EEx ia] IIB, [EEx ib] IIC or [EEx ib] IIB
Max. values
- Voltage
U
O
= 20 V
- Current I
O
= 128 mA
- Power P
O
= 640 mW
Characteristics linear
Effective inner inductance L
i
unimportant
Effective inner capacitance C
i
unimportant
EEx ia IIC EEx ia IIB EEx ib IIC EEx ib IIB
Max. permissible outer inductance L
O
(mH) 0,5 1 1,5 2 2 9
Max. permissible out capacitance C
O
(nF) 97 78 68 486 200 1000
The intrinsically safe circuits are reliably separated from the not-intrinsically safe circuits up to a peak
value of the nominal voltage of 375 V.
The max. voltage on the not-intrinsically safe circuits must not exceed 250 V
eff
in case of failure.
1.7 Approvals
VEGAMET are available with the following approvals:
- Explosions protection: appropriate operating instrument with intrinsically safe(s)
- Overfill protection to WHG and VbF applied
Observe with these applications the appropriate legal documents (test certificates, type approvals and
conformity certificates). These are supplied with the respective instrument.
WHG-approval
Signal conditioning instrument as part of an overfill protection to WHG or VbF (applied).
Ex-approval
For hazardous areas, certificate to CENELEC defined in the conformity certificate
PTB-no. Ex-95.D.2161 X
.
Product description