Sanitary Pressure Transmitters

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Brief Description

Sanitary Pressure Transmitters are specifically designed with flush diaphragms and Tri-Clamp connections to meet the strict hygienic standards of the Food, Beverage, and Pharmaceutical industries, preventing contamination and simplifying cleaning.

In-depth Overview

Unlike standard industrial sensors, sanitary transmitters feature a flush diaphragm that has no crevices or dead spaces where bacteria or process media can accumulate. The most common connection is the Tri-Clamp (or Tri-Clover), which allows for quick, tool-free disassembly and maintains a smooth, Ra (Roughness average) finished contact surface. They are built to withstand routine high-temperature Steam-in-Place (SIP) and Clean-in-Place (CIP) sterilization cycles and are typically made of SS316L wetted parts, often with 3A certification.

Specification

Parameter	Details
Hygiene Standard	3A Sanitary Standards (optional), FDA compliant wetted parts
Connection Type	Tri-Clamp 1.5′′ or 2′′ (standard), DIN 11851
Diaphragm	Flush Mounted (no pockets or crevices)
Wetted Material	Stainless Steel 316L (surface finish Ra<0.8μm or better)
Temperature Resilience	Withstands SIP (130∘C+) and CIP cycles
Pressure Range	0 to 1 bar (low pressure) up to 40 bar
Accuracy	High precision, typically ±0.1% of FS
Output	4−20mA or HART Protocol

Applications

Brewing and Dairy: Tank level and pressure monitoring during fermentation and pasteurization.
Pharmaceuticals: Pressure measurement in bioreactors, filter trains, and purified water (WFI) loops.
Beverage Filling Lines: Head pressure control and precise level indication in filling machine hoppers.
Cosmetics and Biotechnology: Monitoring highly sensitive liquid media and sterile processes.

Key Advantages

Contamination Prevention: Flush design eliminates bacterial entrapment, crucial for product safety.
Fast Cleaning: Tri-Clamp connection and smooth surface allow for highly effective CIP and SIP cycles.
Product Integrity: Prevents shear stress and damage to sensitive biological media.
Regulatory Compliance: Meets stringent hygienic standards like 3A and FDA requirements.

Payment and Shipping

We accept secure payments via T/T and L/C. Sanitary instruments require final testing and documentation (MTRs, 3A certificates); typical lead times are 3-5 weeks. They are shipped in clean, protective packaging, often with plastic caps over the diaphragm to ensure the delicate Ra-finished surface is preserved during transit.

Frequently Asked Questions

Q: What is 3A certification?
A: 3A Sanitary Standards are a set of industry-recognized hygienic design standards primarily for the dairy and food processing industries. A 3A-certified instrument has been reviewed and found to conform to the design criteria necessary for easy cleaning and sanitation.

Q: Why is the surface finish (Ra) important?
A: Ra (Roughness average) specifies the smoothness of the metal surface. A low Ra value (e.g., Ra<0.8μm) indicates a very smooth, polished surface that minimizes microscopic valleys where bacteria can multiply, making cleaning more effective.

Q: Can a sanitary transmitter be used for level measurement?
A: Yes. Sanitary transmitters are frequently mounted flush on the bottom or side of tanks to measure hydrostatic pressure, which is then converted into accurate liquid level or volume.

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Sanitary Pressure Transmitters Manufacturers

Wuxi Huihua Special Instrumentation Co., Ltd. was established in December 2001, the registered capital is 5 million yuan, the existing staff of more than 50 small and medium-sized joint-stock enterprises.
The company specialises in the production of various types of special instruments, alternative to the localisation of imported instruments.To seismic pressure gauge, seismic electric contact pressure gauge, stainless steel pressure gauge, diaphragm corrosion-resistant pressure gauge, marine pressure gauge and other series as the main products. On the basis of field instruments, we have developed various kinds of pressure transmitters, pressure controllers, digital pressure gauges and so on. There are more than 30 series and 3000 specifications. Products are widely used in petroleum, chemical, paper, metallurgy, mining, chemical fibre, electric power, food, environmental protection, rubber and plastic, hydraulics and many other industries, and more than 2,000 domestic customers to establish a friendly relationship with the national large and medium-sized enterprises to establish a good partnership, won the majority of users praise, and set up a corporate brand image.