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Hydrastep 2468 with SIL 2 Capability

Delta Mobrey is pleased to announce that the Hydrastep 2468 has completed assessment and is found to be SIL 2 capable for use in a Safety Instrumented Function (SIF). Hydrastep is the first conductivity probe measuring system to achieve any level of SIL capability. Hydrastep was assessed by the UK’s Engineering Safety Consultants (ESC) and now holds a certificate stating that it is SIL 2 capable.

Delta Mobrey has recently seen an increase in market demand for SIL capable products in general, and more specifically for SIL capability for Hydrastep. The boilers on which Hydrastep is typically used operate at very high temperatures and pressures. A boiler fault resulting in the water level being too high or too low could result in devastating damage or loss of life. Safety systems are therefore required to bring a potential hazard to a safe state. Hydrastep has been used for many years to ensure boiler safety. Now, with SIL 2 capability, Hydrastep can be used within a SIF in accordance with IEC 61508.

To gain this level of capability the Hydrastep assessment to IEC61058 included a detailed study of all failure modes and their effects. No instrument can be said to be 100% reliable and Hydrastep was designed in such a way that any failure mode would be flagged to an operator for immediate action. In addition, the two-input board option gives some dual redundancy and in the unlikely event of a board failure, the system will always use the clock signal from the working board. The design dramatically reduces the chance of any fault going undetected which would otherwise allow a boiler to reach a dangerous state.

Delta Mobrey has for some time offered pressure switches assessed according to IEC 61508 for use in Safety Instrumented Functions. The addition of Hydrastep to the ‘SIL’ portfolio has expanded and diversified Delta Mobrey’s instruments for use in Functional Safety applications and demonstrated our adherence to providing instruments which will ensure safety for plant and personnel.

For more information about Hydrastep please visit our website or contact us on sales@delta-mobrey.com


About Delta Mobrey

For more than 100 years, Delta Mobrey Limited has been a world-leading specialist in the design and manufacture of quality process instrumentation for the measurement and control of fluids and gases in all industrial plant and equipment.

Trusted quality – proven value: quality and reliability have always formed the cornerstone of our success, recognised by industry with international approvals covering every aspect of our manufacturing and product portfolio, together with certifications spanning all areas of hazardous and regulated environments.

Global team – local support: as a global organisation, Delta Mobrey is totally committed to delivering the best possible customer service and technical support, ensuring a lifetime value of ownership, together with a flexible and responsive approach to meet our customers’ individual demands.

View Delta Mobrey's products