Terminal Automation Solutions (TAS) – Megi Control Systems Pvt. Ltd.

Reliable High and Low Level Detection for Liquid Applications

The FT50 Vibronic Level Switch is designed for accurate high-level and low-level detection in tanks and vessels. It helps prevent tank overfilling, dry running, and empty tank conditions by detecting the interface between air and liquid through advanced vibronic resonance technology.
Using inline density measurement, the FT50 identifies changes in media density and provides a reliable output signal or alarm when the liquid level reaches the preset switching point.

Key Features

• Reliable high-level and low-level liquid detection

• Prevents tank overfill and dry-run conditions

• Suitable for installation in any tank orientation

• NO/NC relay output or 2-wire current output (16/8 mA)

• Robust IP68-rated enclosure for harsh industrial environments

• Maintenance-free operation with no moving mechanical parts

Applications

• Storage tanks

• Process vessels

• Chemical industries

• Water and wastewater treatment

• Food and beverage processing

• Oil and gas facilities

• Pharmaceutical plants

Parameter	Specification
Density Range	500 – 1200 kg/m³
Ambient Temperature	-40°C to +70°C
Output	• NO/NC Relay Output • 2-wire Current Output (16/8 mA)
Supply Voltage	• DC 21–25 V (16/8 mA Output) • DC 15–32 V (NO/NC Output) • DC 24–48 V (Intrinsic Safety Type)
Ingress Protection	IP68
Cable Entry	2 × NPT 1/2"
Wetted Material	SS316L Stainless Steel
Housing Material	Aluminum Alloy
Process Connection	150# Flange, Minimum 2"
Explosion Protection	• Ex d IIC T6 Gb • Ex ia IIC T6 Ga

How It Works

• The FT50 operates on the principle of vibronic resonance. Its vibrating fork sensor oscillates at a specific frequency in air. When the fork comes into contact with a liquid, the vibration frequency changes due to the difference in density between air and the liquid medium.
The device continuously monitors this frequency change and accurately detects the liquid-air interface, triggering an alarm or switching output for process control and safety applications.

Durable and Safe Design

• Designed for demanding industrial environments, the FT50 combines rugged construction, explosion-proof certification, and high ingress protection to ensure reliable operation even in challenging process conditions..

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