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Tuning Fork Level Meter

Category: Level Meter

8001@huadianauto.com

Product Introduction:

The tuning fork level meter is a type of liquid level limit switch that outputs a switch signal by detecting changes in the vibration frequency of the tuning fork. It uses a piezoelectric crystal to drive the fork vibration, and the frequency change upon contact with the medium is converted into a switch signal. It is suitable for complex conditions with structural limitations, turbulence, or vibration.

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● Precisely tuned fork design combined with innovative fork area design enables measurement of ultra-low density materials as low as 0.008g/cm³, breaking traditional technical limits to achieve extremely accurate level detection.

● Tailored specifically for powders and fine granular materials, effectively preventing material buildup and ensuring every measurement is stable and reliable, even in high dust or challenging environments, maintaining long-term fault-free operation.

● Advanced self-diagnostic function can instantly and accurately locate fault sources, reducing downtime, saving users significant maintenance costs, and ensuring the equipment is always in optimal working condition.

● Made from premium 316L stainless steel material with strong corrosion resistance, exhibiting excellent anti-corrosion performance and ultra-long service life in acidic, alkaline, or other extreme environments.

● The extended part uses ultra-flexible cable connection, up to 20 meters long, which not only significantly reduces wear caused by compression and extends equipment lifespan but also adapts to more complex installation environments, greatly enhancing system reliability and long-term stability.

Applicable Materials	Medium Type	Powder, Fine Granular Materials
	Medium Density	≥0.008 g/cm³ ³
	Particle Size	Maximum 10mm
Probe Parameters	Vibration Frequency	Approximately 140Hz
Probe Parameters	Tuning Fork Length	150mm
Response Time	Contact with Material	0.5s
Response Time	No Material	1s
Power Supply	Relay Output Type	20～253V AC / 20～72V DC
	Two-wire Type	10～36V DC
	Maximum Power Consumption	8VA (AC); 1.5W (DC)
Signal Output	Relay	Double Pole Double Throw 5A / 253V AC / 24V DC
Signal Output	Two-wire System	8mA / 16mA, Alarm < 2.3mA
Operating Environment	Process Pressure	-1～25 bar
	Process Temperature	Normal Temperature -50～150℃
		High Temperature -50～250℃
		Ultra-high Temperature -50～400℃
	Ambient Temperature	-40～80℃
	Storage and Transport Temperature	-40～80℃
Cooling Specifications and Parameters (Only for Ultra-high Temperature Type)	Cooling Air Inlet Tube	6×4 Specification (Outer Diameter 6mm) PU Air Tube
	Cooling Air Pressure	0.8Mpa
	Minimum Cooling Gas Flow	Needs Adjustment
Overpressure Protection	Relay Output Type	Category III, Level I
Overpressure Protection	Two-wire Type	Category III, Level II
Safety Certification	Protection Level	IP66/IP67
	Explosion-proof Level	Flameproof: Ex db IIC T1…T6 Gb; Ex tb IIIC T80℃…T440°C Db
	Explosion-proof Level	Intrinsic Safety: Ex ia IIC T1…T6 Ga; Ex ia IIIC T200100℃…T200450℃ Da
	CE	LVD Certificate and EMC Certificate
Material	Housing	Aluminum Alloy, Stainless Steel
	Grounding Terminal	316L
	Process Connection	316L, 316L Coated with PTFE
	Fork Body	316L, 316L Coated with PTFE
	Process Seal	Klinger C-4400 Gasket