VEGA VEGASON 51K…53K - Manual (Page 21)

VEGASON 51K … 53K 21
3.2 Approvals
When using ultrasonic sensors in Ex-areas or
navigation, the instruments must be suitable
and approved for the explosion zones and
application areas. The suitability is checked
by approval authorities and certified by ap-
proval documents.
VEGASON 50 ultrasonic sensors are ap-
proved for Ex-zone 1. Please note the at-
tached approval documents when using a
sensor in Ex-area.
Test and approval authorities
VEGASON ultrasonic sensors are tested and
approved by the following monitoring, test
and approval authorities:
- PTB
(Physikalisch Technische Bundesanstalt -
Physical Technical Test Authority)
- FM
(Factory Mutual Research)
- ABS
(American Bureau of Shipping)
- LRS
(Lloyds Register of Shipping)
- G L
(German Lloyd)
- CSA
(Canadian Standards Association)
Technical data
Ex-area zone 1
Series 50 senors require special safety barri-
ers and separators for operation in Ex-area
zone 1. The safety barriers and separators
provide intrinsically safe (ia) circuits. The
followes shows a choice of instruments with
which the series 50 sensors work reliably.
The signal line resistance must not exceed
15
Ω
per wire.
Separators and signal conditioning in-
strument:
- VEGADIS 371 Ex
- A puissance 3 PROFSI 37-24070A
- VEGAMET 614 Ex
- Apparatebau Hundsbach
AH MS 271-B41EEC 010
Separators:
- VEGATRENN 149 Ex…
- Stahl 9303/15/22/11
- CEAG GHG 124 3111 C1206
Separators, safety barriers:
- Stahl 9001/01/280/110/10
- CEAG GHG 11 1 9140 V0728
- Type 9130 (VEGA)
- Stahl 9001/51/280/110/14
- MTL 787 S+
- CEAG CS 3/420-106