Monitoring of Bursting Discs

Signalling Membrane

The maintenance free SB Signalling membrane monitors leakages downstream of the bursting disc assembly where the disc assembly is not fittedwith an integrated signalling device. Sizes; DN 20 (3/4") to DN 600 (24") are available.
As with other signalling devices it works on a simple OPEN or CLOSED Circuit
principal (Normally Closed). Additional gasketting is not necessary. Even minor
leakages are able to be detected due to the low response pressure.

SB-S

The SB-S Signalling membrane has the same design features as the SB but includes a
‘Relief Bore’ in the centre of the signalling membrane. The SB-S is directly mounted
between DIN or ANSI flanges. With its flat low profile design the SB-S can be simply retrofitted into existing pipework flanged connections.

Your benefits:

	Retrofit capability
	Direct installation as a gasket downstream of the bursting disc assembly
	ATEX Compliance

Fibre-Optic Monitoring of Bursting Discs

FOS

The FOS fibre optic bursting membrane monitors leakages and the response of bursting
discs in high corrosive atmospheres and hazardous areas, whenever electrical connection is not permitted or possible at the point of installation.

The signal element consists of glass fibre with a strength < 250 um. In case of the signalling membrane being activated the luminous flux is interrupted due to the tear
of the optical fibre.

The optional fibre optical evaluation unit (FOA) immediately provides an electrical signal for optical or acoustic alert that can also be used to enable system
shut-down or for further data processing.

At the same time the FOA fulfils the function of an opto-electrical converter.

Your benefits

	Zero electrical current signalling for use in hazardous areas
	High corrosive resistance
	Lowest response pressures for leakage detection

Signalling with Retrofittable Device

BIRD

This retrofittable signalling device contains a ceramic bar with integrated electrical conductors. Mounted downstream of the bursting disc the BIRD mechanically breaks. The
function of interrupting the closed circuit is like that of the classic signalling membrane type SK.

The BIRD is suitable for retrofitting on existing installations and guarantees
a safe alarm function.

Your benefits:

	Safe and rapid plant shutdown in case of overpressure incident
	Affords minimal loss in production
	Cost-saving and safe actuation of monitoring and control systems

Signalling with Integrated Device

The SK is an integrated signalling device which is directly connected on top of the bursting disc (downstream). Upon actuation of the bursting disc the normally closed circuit is interrupted.

The SK can be used on triple section and reverse acting KUB bursting discs larger than DN 80 (3").

The SK signalling unit is intrinsically safe and can be used in explosion hazardous areas ie Zones 0 and 20.

In order to facilitate installation the SK Signalling unit can be manufactured with an additional space ring and cable gland.

Your benefits:

	Economic pressure relief monitoring
	Fail-Safe actuation directly downstream of the bursting disc
	ATEX Compliance

Signalling with Proximity Switch

SNR

The SNR Signalling device monitors unpressurised storage tanks and applications which
are protected by the dual rated (pressure & vacuum) BT-ZW-F bursting disc.

It offers inductive, intrinsically safe monitoring in line with NAMUR (DIN EN 60947-5-6),
providing a higher safety standard.

Your benefits:

	Effective dual signalling in a single device
	ATEX and NAMUR Compliance
	Fail-Safe actuation directly at the bursting disc

Search