Eliminate Dead-Legs with Flush Diaphragm Pressure Transmitter

The Problem: $20,000 in Lost Yogurt Batches

Our sanitary processing line was producing inconsistent batches of yogurt, and quality control tests were failing repeatedly. The pressure transmitter reading seemed normal at 20 bar, but batch after batch, our CIP logs showed ‘pass’ while the product tested positive for contamination. This discrepancy cost us $20,000 in lost production and nearly triggered a major recall. We traced the issue to a tiny dead-leg between the gauge and the process, where bacteria could thrive undetected.

Root Cause Analysis: The Hidden Physics of Dead-Legs

Threaded pressure taps create cavities where product can stagnate and bacteria can proliferate. Specifically, the dead-leg acts as a stagnant zone where CIP flow velocity is insufficient to clean effectively. As a result, biofilms form, and contamination spreads to subsequent batches. This hidden physics was compromising our production line’s hygiene standards. Moreover, standard pressure transmitters with threaded connections exacerbate this issue by introducing additional crevices. Therefore, eliminating dead-legs is critical for sanitary processes.

The Solution: DR3405 Flush Diaphragm Pressure Transmitter

To resolve this, we installed the DR3405 Flush Diaphragm Pressure Transmitter, which eliminates dead-legs and contamination points entirely. Its flush diaphragm design ensures a smooth, crevice-free surface that prevents product stagnation. Additionally, the transmitter is 3A compliant and supports both CIP and SIP cleaning processes, making it ideal for hygienic applications. The stainless steel wetted parts further enhance corrosion resistance and cleanability. Consequently, our CIP logs started showing accurate results, and quality control passed every batch without issue.

Results & Validation

After installation, we saved $20,000 in lost production and avoided the risk of a major recall. The flush diaphragm pressure transmitter provided reliable readings and improved cleaning efficiency. Furthermore, the elimination of dead-legs reduced contamination risks by over 90%. This solution not only resolved our immediate problem but also enhanced overall process reliability.

Key Specifications

• Flush diaphragm pressure transmitter
• Sanitary design for hygienic applications
• Eliminates dead-legs and contamination points
• Stainless steel wetted parts
• Supported CIP and SIP cleaning processes
• 3A compliant for food and beverage service
• Pressure Range: 0-35 bar

Closing Question

How do you ensure your process sensors are free from hidden dead-legs that can compromise hygiene standards? Consider upgrading to a flush diaphragm pressure transmitter to safeguard your product quality and avoid costly recalls.

Tags: #pressuretransmitter #industrialpressuresensor #4-20mAoutput #DR3405