APPLICATION DECISIONS
Engineering logic for the measurement point
Begin with the user requirement specification and criticality assessment. Define what is measured, how the value is used, acceptable range, response, alarm or control function and the consequences of failure. Identify product contact, cleaning and sterilisation conditions, bioburden or cross-contamination concerns and the facility connection standard. This establishes which technical documents and reviews are needed without assuming that every utility or process point has the same qualification burden.
Review the complete process boundary. Connection geometry, gasket, diaphragm, probe, thermowell, liner, electrode and fill fluid can all affect compatibility and cleanability. Provide product composition, temperature, pressure, vacuum, cleaning chemicals, cycle duration and thermal transitions. Installation orientation and drainability must be checked from drawings. For level and flow, include foam, conductivity, density, viscosity, bubbles, vessel internals and pipe layout so the sensing principle can be evaluated.
Plan calibration, records and change control before purchase. State required calibration points, units, acceptance criteria, traceability expectations, material or surface records and any applicable certificate. Verify the model, serial or order-code scope of supplied evidence. Define access for removal, in-place checks or replacement and identify how configuration changes will be controlled. TYCK capability or approval is not claimed here; the proposal must show whether the requested configuration and document package can be supplied.
Measurement and engineering factors
- Intended use and criticality
- Define indication, control, alarm, batch or monitoring duty, operating range, acceptance criteria and consequence of an incorrect value.
- Process boundary
- Specify medium, wetted materials, connection, gasket, surface expectations, orientation, drainability and dead-space constraints.
- Cleaning and sterilisation
- Provide chemicals, concentration, cycle temperature and pressure, vacuum, duration, frequency and thermal transitions.
- Calibration and integration
- State points, units, traceability, output, power, control-system interface, access and in-place or bench calibration plan.
- Controlled evidence
- List drawings, materials, surface, elastomer, calibration or approval records and verify their scope for the ordered configuration.
Application scenarios for review
- Formulation or process vessels where product contact, agitation, foam, cleaning, connection and measurement criticality are defined.
- Clean-water, clean-steam or supporting utility points governed by a user requirement and configuration-specific temperature-pressure review.
- Transfer and skid systems where flow, pressure or temperature instruments are included in calibration, documentation and change-control plans.
Limitations and confirmation points
- This guide does not state that a product is validated, qualified, compliant or suitable for sterile service without project review and matching evidence.
- Facility validation, data integrity, electronic records and risk-management obligations extend beyond the instrument catalogue and remain the user’s controlled process.
APPLICATION RFQ
Information to send for application review
- User requirement and intended use
- Measurement criticality and acceptance criteria
- Medium and product-contact status
- Range, pressure, temperature and vacuum
- Connection, materials, seals and surface requirements
- Cleaning and sterilisation cycles
- Installation orientation and drainability
- Output, power and system integration
- Calibration and traceability plan
- Quantity and controlled evidence list
PRODUCT FAMILIES
Related measurement categories
APPLICATION FAQ
Frequently asked questions
What should a pharmaceutical instrument user requirement include?
Define intended use, criticality, range, units, accuracy objective, response, output, alarm or control function, process medium, connection, materials, cleaning and sterilisation conditions, environmental exposure and maintenance access. Add calibration points, traceability and document requirements. Separate mandatory requirements from preferences. The supplier response should identify the proposed model and options, exceptions and available evidence, allowing the project team to assess suitability without converting a general product description into a qualification claim.
Does a calibration certificate make an instrument suitable for a process?
No. A calibration record reports measurement results under stated conditions and traceability; it does not establish chemical compatibility, cleanability, pressure-boundary suitability, approval status or performance in the installed process. Those questions require separate engineering review. Specify calibration range, points, units, acceptance criteria and record format, then verify the certificate identifies the delivered instrument. Installation and loop verification may still be required under the facility’s commissioning and qualification plan.
How should documentation scope be checked before ordering?
List each required record and the fields it must contain, such as legal entity, model, order code, serial number, material heat or component, test points, result, issue date and approval scope. Ask the supplier to confirm availability before order placement. Review whether a certificate applies to the exact variant, connection and options rather than a broad family. The project owner remains responsible for deciding whether the evidence satisfies its quality system and intended use.