ENGINEERING DECISIONS
Engineering logic for this condition
Start with the facility requirement and product-contact boundary. Name the product, ingredients, allergens or active materials, temperature, viscosity, coating tendency and microbiological controls relevant to the point. Define the exact mating connection, nominal size, gasket, weld arrangement and installation orientation. Dead legs, ledges and poor drainage are system properties, so the instrument drawing must be assessed together with the process fitting and pipework.
Document every production and cleaning state. Provide CIP chemicals and concentrations, rinse conditions, SIP or thermal-sanitation temperature, pressure, duration, frequency, vacuum and heating or cooling rate. Confirm whether the sensor remains powered during each cycle. A flush process face may reduce an exposed cavity but can still have gasket, deformation, thermal and installation constraints. Flow and temperature sensors also require an insertion and cleanability review.
Define evidence before procurement. The project may request wetted-material declarations, elastomer information, surface records, connection drawings, calibration records or a named approval. Each document must cover the ordered model and option, not merely a product family. Record the required scope in the RFQ and leave claims unresolved when evidence is unavailable. Final acceptance belongs to the facility quality and engineering process.
Selection inputs and technical route
- Product contact
- Product composition, viscosity, coating, sensitivity, batch changeover and contamination consequences.
- Connection geometry
- Exact standard, size, gasket, weld, orientation, drainability and relationship to surrounding pipework.
- Cleaning and sanitation
- CIP or SIP media, concentration, pressure, temperature, duration, frequency, vacuum and transition rate.
- Materials and surface
- Wetted metals, elastomers, surface requirements, crevices and any prohibited product-contact materials.
- Quality evidence
- Drawings, declarations, calibration and approval records whose scope matches the proposed configuration.
Applications for engineering review
- Food or beverage vessels and lines where plant connection and cleaning requirements are formally documented.
- Pharmaceutical, biotechnology or clean-utility skids subject to facility-specific engineering and quality review.
- Viscous or coating products where a reviewed flush arrangement may reduce an exposed pressure passage.
Limitations and confirmation points
- A flush face or clamp connection does not prove cleanability, drainability, surface condition or hygienic approval.
- This guide cannot replace the facility risk assessment, validation protocol or configuration-specific evidence review.
APPLICATION RFQ
Information to send for configuration review
- Measurement variable, range and process purpose
- Product medium, viscosity and coating tendency
- Exact hygienic connection standard and size
- Wetted material and surface requirements
- Gasket and elastomer restrictions
- CIP and SIP chemicals, temperatures and durations
- Process, cleaning, vacuum and ambient envelope
- Orientation, drainage and surrounding installation drawing
- Output, power, enclosure and cable entry
- Quantity and required quality documents
PRODUCT FAMILIES
Related product categories
APPLICATION FAQ
Frequently asked questions
Does a flush diaphragm automatically make an instrument hygienic?
No. A flush diaphragm may reduce an exposed pressure passage, but suitability also depends on connection geometry, gasket, wetted materials, surface condition, orientation, drainability and the cleaning method. The mating process fitting is part of the boundary. Review a dimensioned drawing against the facility standard and request applicable material, surface or approval evidence for the exact model and connection before accepting the assembly for product-contact service.
Which CIP and SIP information belongs in the RFQ?
List each cleaning or sterilisation medium, concentration, maximum temperature and pressure, cycle duration, rinse state and frequency. Include vacuum and the fastest thermal transition where relevant, plus whether the instrument remains installed and powered. These inputs support review of seals, elastomers, fill systems, electronics and temperature effects. Acceptance should refer to the selected configuration and controlled documents, not a general statement about the product family.
What documents may be required for hygienic process measurement?
Requirements can include dimensioned connection drawings, wetted-material declarations, elastomer information, surface-finish records, calibration certificates or an applicable third-party approval. The facility specification determines the necessary scope. Name each deliverable in the RFQ and verify the legal entity, model, connection, material and validity where relevant. A record for another size, seal or variant should not be assumed to cover the ordered SKU.