SIL2/3 Certified Tuning Fork Liquid Level Switches used in Pharmaceutical Industry

Product catalog summary

Introduction
Shenzhen Jiwei Automations Ltd. has supplied 56 SIL certified tuning fork liquid level switches to a Tianjin enterprise for use in pharmaceutical production. Among these, 18 switches feature 2-metre-long extension tines, designed to meet specific operational requirements.

Specifications
The Jiwei Ring-11 Liquid Level Switch is designed for high reliability in liquid level detection and control. It features a compact fork length of 40mm, making it suitable for vessels, process tanks, storage tanks, pipelines, and other constrained spaces. The switch operates on the fork resonant principle, with a pre-adjusted harmonic resonant frequency for high sensitivity, capable of measuring liquid densities as low as 0.5g/cm³.

Applications
The Ring-11 switch is effective for measuring levels of various liquids, including acids (HCL, H₂SO₄, H₂SO₃), alkali liquids, syrup, medical liquids, and industrial wastewater. It is particularly suitable for pressured liquefied gas or LNG and environments with foaming, bubbling, high viscosity, or vibration disturbances.

Certifications
The Ring-11 Liquid Level Switch has passed SIL2/SIL3 Functional Safety Assessment and is certified for Intrinsic Safety and Flameproof Enclosure explosion protection, ensuring compliance with safety standards required by the Certification and Accreditation Administration of the People’s Republic of China (CNCA).

Catalog excerpts

SIL2/3 Certified Tuning Fork Liquid Level Switches used in Pharmaceutical Industry-1

SIL2/3 Certified Tuning Fork Liquid Level Switches used in Pharmaceutical Industry Recently, a Tianjin enterprise ordered 56 pieces SIL certified tuning fork liquid level switches from Jiwei for liquid level measurement in pharmaceutical production. In which, 18 pieces are with 2-metre-long extension tines. Facing to the special working condition, the client targets on high reliable tuning fork liquid level switches. Most importantly, the instrument should pass the SIL Functional Safety Assessment Certification issued by Certification and Accreditation Administration of the People’s Republic of China (CNCA). Besides, due to the restrict mounting position, the Shenzhen Jiwei Automations Ltd.

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SIL2/3 Certified Tuning Fork Liquid Level Switches used in Pharmaceutical Industry-2

instrument need to be mounted from above to measure the liquid level of the tank and prevent overflow. Jiwei Ring-11 Liquid Level Switch is a highly reliable instrument for liquid level detection and control. The fork length is only 40mm which makes Ring-11 applicable not only for vessels, process tanks and storage tanks, but also particularly for pipelines or other applications with constricted space. Based on the fork resonant principle, when a fork vibrates in harmonic resonance comes in contact with measured liquid, its vibrating frequency will greatly decrease. The fork’s harmonic resonant...

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SIL2/3 Certified Tuning Fork Liquid Level Switches used in Pharmaceutical Industry-3

In addition, Ring-11 Liquid Level Switch passed SIL2 / SIL3 Functional Safety Assessment, as well as certified for both Intrinsic Safety and Flameproof Enclosure explosion protection. Shenzhen Jiwei Automations Ltd.

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