Operating principle
Piezoelectric devices are utilized to achieve vibration drive and detection. Once resonant vibration fork comes into contact with application medium, vibration frequency of forks substantially decreases, and the output signal from piezoelectric detection device decreases accordingly. Then an integrated circuit is designed to analyze the signal from piezoelectric device and output a switch signal as a result.
HTL50 vibrating fork level detectors is a highly reliable instrument for liquid level detection and control. The fork length is only 40mm which makes HTL50 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 a measured liquid, its vibration frequency will greatly decrease. The fork’s harmonic resonant frequency has been precisely pre-adjusted to achieve high sensitivity, which enables the sensor to detect fluids with density as low as 0.5g/cm³.
Application
(1) Liquefied natural gas and LNG with the density of 0.56g/cm³ in transport pipelines.
(2) Pipelines in pump protection system.
(3) Herbicides, fungicides and insecticide in agricultural chemicals factory
Benefits
(1) With only 40mm fork length, specially designed for pipelines and confined spaces.
(2) The lowest detectable medium density is as low as 0.5g/cm³.
(3) With strong anti-interference function, not influenced by foam, bubbles, viscosity, oscillation and other liquid characteristics.
(4) Industry-leading performance for high temperature applications. Process temperature can reach up to 250℃.
(5) High sensitivity due to the precisely pre-adjusted harmonic resonant frequency of the fork.
(6) The certificates for Intrinsically-Safety and Explosion-Proof allow the operation in hazardous areas.
