Advantages and Applications of Sanitary Pressure Transmitters

The core design objective of a sanitary pressure transmitter is to prevent media residue and bacterial growth. For this reason, it adopts a flush diaphragm isolation structure. This design provides a smooth, flat wetted surface with no dead zones, making it easy to clean and sterilize (such as through CIP/SIP processes). For example, ARTang’s sanitary flush diaphragm pressure transmitter features an integrated flush sensor, with a wetted surface roughness as low as Ra ≤ 0.8 μm, meeting strict hygienic standards.

In contrast, conventional pressure transmitters typically use threaded or flanged diaphragm connections, which may create gaps or recessed areas where media can accumulate, making them unsuitable for high-purity or sanitary applications.

Key Features of Sanitary Pressure Transmitters

Superior Hygienic Performance:

A flush diaphragm is used as the sensing element, designed to prevent direct contact between the process media and metal components. This effectively eliminates sanitary dead zones. While ensuring accurate measurement, the design reduces the risk of bacteria, debris, and other contaminants adhering to the surface, significantly improving overall hygiene performance.

Excellent Corrosion Resistance:

Manufactured with special materials and advanced surface treatment processes, the transmitter offers outstanding resistance to corrosion and can handle a wide range of acidic, alkaline, and saline media. This greatly extends service life and reduces maintenance costs.

High Measurement Accuracy:

Measurement accuracy can reach ±0.25% or better, meeting the requirements of high-precision applications.

Wide Turndown Ratio:

With a turndown ratio of up to 100:1, the transmitter can accommodate a broad range of pressure variations. This allows it to better handle pressure fluctuations and extreme pressure conditions, enhancing measurement stability and reliability.

Fast Response Time:

Designed for rapid response, with response times at the millisecond level. This enables timely and accurate pressure data acquisition, improving process control accuracy and overall operational stability.

Easy Installation:

Compact in structure and small in size, the transmitter is easy to install and adaptable to various mounting spaces and positions. Multiple installation options are available to meet different application requirements.

The Importance of a Flush Diaphragm in Pressure Transmitter

The flush diaphragm is a critical component of a pressure transmitter, especially in sanitary applications. It is the part of the device that comes into direct contact with the process media. In hygienic environments, the diaphragm must be free of gaps, crevices, or corners where bacteria or residue could accumulate.

A flush diaphragm pressure transmitter features a smooth, flat sensing surface that is easy to clean and sterilize. This design allows the device to maintain high sanitary standards, making it particularly suitable for medical and other hygiene-sensitive industries. In addition, the flush diaphragm improves measurement accuracy by enabling more direct and precise pressure sensing.

The diaphragm is also designed to withstand harsh conditions, including high temperatures and corrosive substances, ensuring long service life and reliable performance.

Main Applications of Sanitary Pressure Transmitters in Hygienic Industries

Pharmaceutical Manufacturing:

In pharmaceutical production, sanitary diaphragm pressure transmitters are used to measure and monitor the pressure of various medicinal liquids, solvents, and gases. Their smooth, crevice-free design helps prevent particle buildup and microbial growth, ensuring compliance with strict hygienic standards.

Food Processing:

In food processing applications, these transmitters are used to measure and monitor the pressure of viscous media such as juices, sauces, and dairy products. Their easy-to-clean and easy-to-maintain design helps reduce cross-contamination between batches and improves overall product quality.

Biotechnology Industry:

In biotechnology, sanitary diaphragm pressure transmitters are commonly used to monitor pressure changes in fermenters and bioreactors. Their excellent sealing performance and corrosion resistance help ensure the stability and safety of biological processes.

Chemical Production:

In certain chemical processes, these transmitters are used to measure and control the pressure of corrosive media. Their specialized materials and structural design provide strong resistance to chemical corrosion, ensuring long-term stable operation.

A sanitary pressure transmitter is a pressure measurement device specifically designed for environments with strict hygienic requirements. It accurately monitors pressure changes during the production of beverages, dairy products, alcoholic drinks, and similar processes, ensuring stable pressure within production equipment and thereby safeguarding product quality and operational safety.

In the field of pressure transmitter manufacturing, ARTang is dedicated to providing high-quality products and customized measurement solutions for customers in the manufacturing and process industries.