DonadonSDD - Δίσκοι Διαρραγής - Optic Fibre Rupture Indicators

Name: DonadonSDD - Δίσκοι Διαρραγής - Optic Fibre Rupture Indicators
Brand: Donadon SDD
SKU: DonadonSDD - Rupture Indicators - Optic Fibre Rupture Indicators

The rupture indicator for ultra-low pressures

In all those cases where it is necessary to signal the breakage of a rupture disc designed for ultra-low pressures, a significant difficulty often arises; the extremely reduced thicknesses and sizes of such discs make it impractical, or at times even impossible, to install any traditional kind of sensor, either for simple lack of space or because the material involved in a breakage would be of such small quantity that the signal would not activate.

To solve this issue, DonadonSDD has created a market exclusive with its unique optic fibre rupture indicators, specifically developed for the ultra-low pressures which we are specialists of. Optic fibre in these sensors makes it possible to signal breakage even with disc models designed for extremely low pressures, and thus extremely small and thin in construction – at any temperature, even the highest.

Περιγραφή
Certifications

OFI

Optical rupture indicators Donadon OFI 04 and OFI 07 are very simple and reliable instruments for detecting bursting of discs.

The terminals of the optical fibres are installed in the disc holder in a suitable position and are connected to an amplifier.

Light transmission between the two optical fibres is interrupted by the bursting of the disc and a signal is sent to the plant’s safety system.

If the amplifier is in an ATEX classified zone 1, 21, 2, 22, it must be installed inside an Ex d certified box.

There are no electrical or moving parts in contact with the equipment to be controlled and therefore OFI indicators are not an ignition source.

OFI 04 and OFI 07 indicators are not damaged by the opening of the disc and therefore do not need to be replaced. Cleaning protection slides is recommended.

OFI 04 and OFI 07 indicate the opening of the disc for any maintenance or replacement.

Zone installation depends on barrier type:

Ex ia barrier -> zone 0; 20; 1; 21; 2; 22

Ex ib barrier -> zone 1; 21; 2; 22

Technical optical fibre properties

Model	OFI 04	OFI 07
Optical fibre	Plastic	Glass with steel protection
Operating temperature	From -55 to +70°C/+105°C	From -40°C to +250°C
Minimum bending radius	R25	R23

Technical amplifier properties

Model	OFI 04	OFI 07
Amplifier supply power	12-24 VDC
Amplifier consumption	45 mA max
Operating temperature	From -10°C to +60°C
Feedback time	1 msec
Degree of protection	IP64
Amplifier material	ABS
Rupture disk	DCD, DIF, LPD, SCD, SCR, Y90, KRD

Κωδικός DonadonSDD - Rupture Indicators - Optic Fibre Rupture Indicators

Quality certifications are a guarantee. DonadonSDD has obtained the following certifications.

DonadonSDD provides high-quality products that meet the safety requirements of the systems where they are installed. The organisation and procedures fully comply with the ISO 9001 standard to ensure the utmost quality for our products. Our quality system has also met the stringent requirements of the UNI EN 9100 standard concerning design, development, and manufacture of rupture discs for the aerospace industry.

DonadonSDD products – such as rupture discs, explosion venting panels, and rupture indicators – are certified in compliance with PED directive 2014/68/EU or ATEX directive 2014/34/EU. The rupture discs alone are manufactured, tested, and certified in compliance with ASME directive, Section VIII, Division 1 and carry the relative UD stamp.

DonadonSDD is subject to inspections carried out by 3-A Sanitary Standard, Inc. (3-A SSI) so that our rupture discs can meet the highest sanitary standards.

Upon request, our clients can ask independent inspectors to certify single batches.

DOWNLOAD CERTIFICATIONS