Hongnuo (shenyang) General Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of vibrating fork liquid level switch in China. Welcome to buy high quality vibrating fork liquid level switch at competitive price from our factory. We also accept customized orders.
The HNL120-A vibrating fork liquid level switch is an industrial-grade sensing device engineered for reliable level alarm and control of liquids, free-flowing powders, and granules, ideal for water treatment, beverage, chemical, food processing, and pharmaceutical industries. Operating via piezoelectric crystals driving the fork to vibrate at resonant frequency, it detects medium contact by sensing sudden changes in amplitude and frequency-converting these into switch signals (relay/PNP) for accurate monitoring, unaffected by conductivity, dielectric constant, viscosity, or pressure.
Crafted with corrosion-resistant materials (304/316 stainless steel, PTFE coating), this switch withstands harsh media like acids, alkalis, slurries, and gases-generating liquids. It offers flexible operating conditions: pressure ratings of 10/25/40bar, temperature ranges from -40℃ to 200℃, and IP65 protection, plus Exd IICT6 explosion-proof certification for hazardous environments. With customizable probe lengths (128mm to 3000mm+) and versatile installations (thread, flange, clamp connections), it adapts to tanks, pipes, and diverse system requirements.
Key advantages include maintenance-free operation (no moving parts), no on-site calibration needs, and strong anti-noise interference via high-frequency excitation. It delivers 1mm repeatability, adjustable response time (0.5-60s), and a service life exceeding 1 million cycles, suitable for media with density ≥0.5g/cm³ and particle diameter <10mm.
The HNL120-A vibrating fork liquid level switch combines durability, simplicity, and wide compatibility-making it a cost-effective choice for businesses seeking hassle-free level detection. Whether for beverage production lines, chemical storage tanks, or water supply systems, it ensures consistent performance and easy integration to optimize process control.
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HNL120-A Tuning Fork Level Switch Parameters |
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Specific Parameters |
Value / Description |
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Measurement Principle |
The HNL120-A tuning fork level switch works by using a pair of piezoelectric crystals mounted on a tuning fork base to cause the tuning fork to vibrate at a specific resonant frequency. When the tuning fork comes into contact with the medium being measured, the amplitude and frequency of the tuning fork will change abruptly. The intelligent circuit detects this change and converts it into a switching signal. |
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Product Types |
Standard type, Corrosion-resistant type |
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Measuring Medium |
Water, oil, and free-flowing powders or granular media |
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Application Scenarios |
Tap water, mineral water, pulp, and liquids that can produce gas, etc. |
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Wetted Parts Material |
304/316/PTFE coating |
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Connection Method |
G3/4, G1, NPT3/4, NPT1 (external thread) |
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Electrical Connection |
Terminal wiring |
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Insertion Depth |
0-28mm,0-250mm,0-300mm,0-400mm, |
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Withstand Pressure Reference |
10bar,25bar,40bar |
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Operating Temperature Range |
-40-80℃,-40-150℃,-40-200℃ |
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Transmitter Housing Material |
Aluminm |
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Outputs |
Relay output,PNP output |
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Power Supply |
24VDC (DC),220VAC (AC) |
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Protection Level |
IP65 |
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Certificate |
CE certified |
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Explosion-proof Selection |
Non-explosion-proof type,Explosion-proof type |
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Ordering Information |
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