VEGA VEGASON 83 … 87 ECHOFOX - Manual (Page 22)

VEGASON 83 … 87 22
2 Product description
2.11 Approvals
If measuring systems acc. to the following approvals are installed, the respective legal documents have to be observed.
The documents are enclosed to the respecitve measuring system.
StEx-approval
For measuring systems in dust-Ex areas.
- pulse-echo sensor VEGASON 84 … 87 FK StEx and GK StEx
VEGASON 84 … 87 FV StEx and GV StEx
defined in the type approval BVS 93.Y.8005
- signal conditioning instrument VEGAMET … with digital transmission of measuring data
- processing system VEGALOG 571 with EV-input cards
- auxiliary level switch all VEGASEL with current input 0/4 … 20 mA
Ex-approval
For measuring system in hazardous areas,
certificated acc. to
- CENELEC
- ElexV Zone 0 (Germany)
- pulse-echo sensor VEGASON 83 and 84 FV Ex
VEGASON 83 and 84 FV Ex B
- power supply via separator type 146 or VEGATRENN 546
acc. to conformity certificate PTB-no. Ex-93.C.4025
defined in the conformity certificate PTB-no. Ex-93.C.4092 (CENELEC-certificate)
- signal conditioning instrument VEGAMET … with digital transmission of measuring data
- processing system VEGALOG 571 with EV-input cards
- auxiliary level switch all VEGASEL with current input 0/4 … 20 mA
- pulse-echo sensor VEGASON 83 and 84 FV Ex 0
VEGASON 83 and 84 FV Ex 0 B
- power supply via separator type 146 or VEGATRENN 546
acc. to conformity certificate PTB-no. Ex-93.C.4025
defined in the conformity certificate PTB-no. Ex-94.C.4041 (CENELEC and ElexV, Zone 0, Germany)
- signal conditioning instrument VEGAMET … with digital transmission of measuring data
- processing system VEGALOG 571 with EV-input cards
- auxiliary level switch all VEGASEL with current input 0/4 … 20 mA
Ex-technical data of sensors
Signal current circuit in flame proofing intrinsic safe EEx ia IIB
Terminals 1 (+) und 2 (–) bzw. 3 (+) und 4 (–)
Effective inner inductance
each current circuit L
i
VEGASON 8. FV Ex, Ex0 not important
VEGASON 8. FV Ex B, Ex 0 B 65
µ
H
Effective inner capacitance not important