Smith Flow Control and Netherlocks have merged. We are now Sofis.

Interlock key management

Storage and management of interlocking keys for improved plant status control.

Improve your plant status insight

The presence of interlock keys in your interlock key management cabinet tells you the status of the respective system. Each key has its own dedicated position. The tag plates on the keys and the key positions are clearly visible, offering you clear system status information. The presence of an end key in your cabinet indicates a switchover procedure has finished. The absence of a key means the status is unclear, or switching is in progress.

Interlock key management system for valve interlocks
Discover how key management can increase your plant efficiency
Ket cabinet for valve interlocks

Your interlock usage information hub

An electronic interlock key management cabinet gives you complete information about your interlock systems. The cabinet provides detailed information for the interlock user. It contains sequence drawings, manuals, videos and P&IDs. This information can be searched and accessed via the touch screen. Relevant process data, like key usage and system status information, is logged in the system. This data can be reported and exported. You can access this information on the touch screen or from a remote computer, for real-time visibility and assistance.

Models

Interlock key management products are available for Netherlocks interlocks and Smith Flow Control interlocks. Other interlocking brands are available on request.

Key management storage

Basic storage cabinet for orderly storage of your interlocking keys. Get plant status information from visible tag plates.

  • Dedicated, coded key-holding positions
  • Lockable, non-combustible door
  • Tag plates indicate system status
  • Coated carbon steel plate or AISI 316 material
  • IP66 storage cabinet
  • Vertical hanging key orientation, uncoded key positions; or
  •  Horizontal key orientation with dedicated key position
  • Coated carbon steel / AISI 304 / AISI 316

Key management control

Storage cabinet, with electronic key detection. SmartKey control communicates plant status information to your DCS.

  • IP60 storage cabinet
  • Coated carbon steel / AISI 304 / AISI 316
  • Dedicated key positions
  • Electronic key detection
  • DCS-connected or integrated PLC
  • LED key signalling

Options

  • Solenoid key trapping and release
  • Operator identification though card (IDC) or fingerprint scan
  • Electronically-controlled door locking

Key management interactive

Storage cabinet, with electronic key detection and touch screen. SmartKey interactive communicates plant status information to your DCS and offers operator guidance.

  • IP60 storage cabinet
  • Coated carbon steel / AISI 304 / AISI 316
  • Dedicated key positions
  • Single or dual switch key detection
  • Multicolour LED key signalling
  • Embedded industrial PC with multi-touchscreen
  • Data storage and control software
  • Ethernet network connection with web browser-based remote
  • User guidance (process instructions and equipment drawings and videos)

Options

  • Solenoid key trapping and release
  • Operator identification though ID card or fingerprint scan
  • Electronically-controlled door locking

Key management plus

Storage cabinet, with electronic key detection and display. SmartKey control communicates plant status information to your DCS and offers operator guidance.

  • IP40 storage cabinet
  • Coated steel & PVC cabinet
  • Dedicated key positions
  • Electronic key detection
  • RFID key scanning and detection
  • Embedded controller
  • Data storage
  • Ethernet network connection with web browser-based remote
  • Multicolour light key signalling
  • Solenoid key trapping and release
  • Operator identification though ID card
  • Key storage for for interlocks
  • key management device for valve interlocks

Key management in practice: safe, dry bulk storage

One of the major challenges in dry bulk handling is to prevent incorrect loading and unloading, which can result in significant loss. Sofis valve interlocks eliminate incorrect loading and unloading by only allowing the right valves to be opened or closed in the correct order, leading operators safely through strict work procedures.

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Support

Sofis offers you support through local service centres and a network of certified local service partners. This enables efficient installation and maintenance of your Sofis products. We strive to create partnerships with our clients, providing a turnkey approach to service. This will lead to a reduction in your total cost of ownership.

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