I. Project Background
A globally leading pharmaceutical machinery manufacturer (referred to as "the client") faced two core challenges while developing next-generation intelligent equipment for formulation production lines:
High-standard compliance requirements: The vial automatic washing machine and tunnel sterilizer needed to meet 3A Sanitary Standards and EHEDG hygienic design guidelines, but traditional pressure sensors struggled to achieve certification.
Process reliability bottleneck: Under high-temperature and high-pressure conditions, conventional transmitters suffered from short lifespans and accuracy drift, compromising the stability of cleaning and sterilization processes.
II. Solution: Innovative Application of Hygienic Pressure Transmitters
To address the client's needs, a customized 3A/EHEDG-certified hygienic pressure transmitter was deployed with the following key designs:
1. Hygienic Compliance Design
Materials and Structure:
Main body made of electropolished 316L stainless steel (surface roughness Ra≤0.4μm), certified by 3A, with dead-zone-free design to prevent microbial retention.
EHEDG-certified to ensure seamless integration with hygienic pipelines in washing machines and sterilizers.
Cleaning Compatibility:
Supports CIP/SIP and withstands strong acid/alkaline cleaning agents.
2. High-Temperature & High-Pressure Precision Monitoring
Process Assurance:
Real-time monitoring of washing machine spray pressure (0–10 bar, accuracy ±0.2%FS) ensures thorough cleaning of vial interiors.
Tunnel sterilizer chamber differential pressure monitoring (-50–50Pa) links with airflow control to guarantee uniform laminar flow in the sterilization zone.
Enhanced Reliability:
Built-in temperature compensation module ensures long-term stability in high-temperature environments, with MTBF ≥100,00 hours.
3. Intelligent Function Integration
Real-time pressure data recording and deviation alerts (e.g., abnormal HEPA filter pressure).
Dynamic water pressure adjustment through automated washing program linkage.
III. Implementation Results
Certification & Compliance:
The system became the industry's first intelligent solution to simultaneously meet 3A and EHEDG standards.
Pressure monitoring module passed FDA data integrity audits.
Performance Improvements:
40% reduction in particulate residue after vial washing, with visible particle qualification rate rising to 99.98%.
15% lower energy consumption in tunnel sterilizers (via optimized airflow distribution).
Client Benefits:
30% reduction in validation costs (hygienic design eliminates additional cleaning validation).
The solution helped secure orders from top 5 domestic pharmaceutical companies and expanded global exports.
IV. Client Testimonial
"The hygienic pressure transmitter not only resolved measurement challenges in high-temperature sterilization zones but also enabled us to pass international certifications in one go, providing critical support for product competitiveness."
V. Industry Significance
This case sets a new benchmark for intelligent upgrades in sterile formulation equipment, particularly for high-risk productions like vaccines and monoclonal antibodies. Future applications may extend to bioreactors and freeze dryers.
