Bypass Level Indicator / Functional description

Transcription

1 Bypass Level Indicator / Functional description Functional description Bypass level indicators form an integral part of the pressure vessel. Via two process connections a standpipe ( bypass ) is mounted to the side of a tank or vessel. Due to the direct connection the filling level in the bypass will always correspond exactly to the filling level in the vessel ( communicating pipes ). In the bypassing pipe a cylindrical float with a built-in magnetic system is contained. The concentrated magnetic field of the permanent magnet corresponds exactly to the filling level of the liquid in the bypass. In a contactless way the magnetic field transmits itself through the wall of the standpipe onto externally mounted displaying, recording and switching elements. Design limits Specific gravity: Design pressure: Design temperature: 50 kg/m - bar... 0 bar -96 C C 5

2 Connection diagram SWITCH POINT SWITCH POINT recommended wiring for PLC input SWITCH POINT Protective circuit according to BLUE EN BLUE BLUE 0K BROWN BLACK BROWN BLACK Ohm BROWN K 0K BLACK with resistor with SIL IEC 6508 / 65 ATEX* II G II D Ex ia IIC T6 - T Ex td A IP6* T80 C - T0 C II G II D Ex d IIC T6 - T4 Ex td A IP6* T80 C - T0 C of protection intrinsic safety Ex ia IIC switch bzw. temperature switch of protection intrinsic safety Ex ia IIC temperature probe of protection intrinsic safety Ex ia IIC with option /N ( ) of protection moulding of protection moulding with option /N ( ) of protection moulding with option /R ( resistor ) I i U i U i ma 8 V 5 VDC 0 VDC/AC 5 VDC 0 VDC/AC I i I i I N I N ma 60 ma P SN 50 W/VA 60 ma ma P i 700 mw 700 mw P FN key page 6-4 * = The approval is dependent on the equipment combination 8

3 BGU/../../../.. BGU/../../../../EXIAG -0 C C / -0 C C -60 C C / - C C -40 C C / - C C -5 C... 0 C / - C... 0 C ~ 0 BGUD/../../../../EXDG -0 C C - C... 0 C - C C - C... 0 C - : - with resistor: 0 V / P SN 50 W/VA / P FN 700 mw 5 VDC / I N 60 ma 0 V / I N ma ~ key page 6-4 8

4 BGUALE/.. BGUALE/../EXIAG -40 C... C / - C... C ~ 60 ~ ~ BGUASQ/.. BGUASQ/../EXIAG - ATEX Exia with resistor: - ATEX Exia with : - C C - C C - C C ~ 5 key page

5 BGUASMA/../../../.. BGUASMA/../../../../EXIAG Connector: M - C C ~ 5 RU60/../../../.. RU60/../../../../EXIAG RU7/../../../.. RU7/../../../../EXIAG IP 68 RU7.. ( for chamber Ø 7 mm ) -0 C C -40 C C -40 C C -5 C... 0 C V / 0.5 A / VA ~ 69 8 key page

6 RUV60/../../../.. RUV60/../../../../EXIAG RUV7/../../../.. RUV7/../../../../EXIAG Stainless steel IP 68 RUV7.. ( for chamber Ø 7 mm ) -0 C C -40 C C -40 C C -5 C... 0 C 69 V / 0.5 A / VA ~ 8 RUVD60/../../../../EXDG RUVD7/../../../../EXDG Stainless steel IP 68 RUVD7.. ( for chamber Ø 7 mm ) -0 C C -40 C... 0 C -40 C C -5 C... 0 C - : - with resistor: 0 V / P SN 50 W/VA / P FN 700 mw 5 VDC / I N 60 ma 0 V / I N ma ~ key page

7 ALFU/.. ALFU/../EXIAG Aluminium coated RAL with Ohm Resistor: - with : -40 C... 0 C -40 C... 0 C -40 C... 0 C 7 Power supply: Nominal voltage: Self inductance: Self capacitance: ALFI ALFI/EXIAG Aluminium coated RAL C... C / -40 C... 7 C VDC 8.0 VDC ( R i ~ Ohm ) mh nf ~ NAMUR normally closed ( Proximity switch ) Intrinsic safety data: U i = 6 VDC I i = ma P i = 4 mw ~ key page

8 ALEU/.. ALEU/../EXIAG -40 C... C / - C... C ~ ~ APAVU/.. APBVU/../EXIAG Polyester / Stainless steel -0 C... C ~ 40 key page

9 ALDAU/../EXDG Aluminium coated RAL C... C : - with resistor: 0 V / P SN 50 W/VA / P FN 700 mw 5 VDC / I N 60 ma 0 V / I N ma ~ 70 key page