Hongnuo (shenyang) General Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of rf admittance level switch in China. Welcome to buy high quality rf admittance level switch at competitive price from our factory. We also accept customized orders.
Parameter Overview
| Parameter | Value |
|---|---|
| Measuring range | 0-3000mm (custom) |
| Output | Relay DPDT (5A) |
| Repeatability | <1mm (conductive media) / <10mm (insulating media) |
| Response time | 0.2s (adjustable up to 60s) |
| Switching frequency | Max 150 times/min |
| Standard pressure | -0.1 to 2.5MPa |
For more parameters, please click on "Specifications".
4 things that make this different
Shield electrode ignores hang-up - triggers only on real material
Standard capacitance switches false-trigger when material coats the probe. The HNL50-A has a built-in shield electrode that compensates for coating. Sticky media. Powders that cling. Slurry that builds up. The switch ignores it all - only triggers when the actual material level reaches the probe. No false alarms.
01
No moving parts - nothing to wear out
No motor. No bearing. No paddle. No mechanical seal. The probe is stationary. The electronics do the work. Nothing to bend, break, or replace. Longer life. Lower maintenance.
02
One switch does liquids, slurries, powders, and interfaces
Not just for solids. Not just for liquids. Conductive. Non-conductive. Oil/water interface. Slurry. Dust. One technology covers almost everything. No need to stock different switches for different media.
03
High temperature up to 800°C - high pressure up to 5 MPa
Standard model: -20°C to 180°C. High-temp remote model: up to 800°C at atmospheric pressure. Pressure-rated models up to 5 MPa (25°C). Use it in kilns, hot gas ducts, pressurized vessels, and hydraulic systems.
04
Where to use it
| Chemical plants | Sticky slurry, coating media, corrosive liquids. Shield electrode ignores hang-up - no false alarms. Relay output drives pumps or alarms directly. |
|---|---|
| Oil & gas | Oil/water interface detection. Liquid level in separators and storage tanks. High-temp and high-pressure options available. |
| Cement / building materials | Dust level monitoring in baghouses and silos. Probe senses dust accumulation - no moving parts to clog. |
| Power plants | Coal dust level in mills and hoppers. High-temp option for hot flue gas ducts. Intrinsic safety option for hazardous areas. |
| Food & feed | Powders, granules, and liquids in processing vessels. Stainless steel probe for food contact. 3A certification available on request. |
| Mining / mineral processing | Slurry level in thickeners and tanks. Abrasion-resistant probe options. No mechanical parts to wear out. |
HNL50-A RF Admittance Level Switch
Liquids. Slurries. Powders. Interfaces. One technology covers them all.
No moving parts. No false alarms from hang-up. High temp. High pressure. Relay output.
Send us your media type, temperature, pressure, and tank depth - we'll recommend the right configuration and quote within 24 hours.
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HNL50-A RF Admittance Switch Parameters |
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Specific Parameters |
Value / Description |
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Measurement Principle |
The HNL50-A RF admittance level switch consists of a sensor unit and an electronic unit. The sensor unit mainly comprises three parts: a measuring probe, a shielding electrode, and a grounding terminal. The material height reflects the change in admittance between the probe and the container wall. When the material reaches the switch's operating point, the electronic unit reacts, driving a relay to activate and output a switch signal. The shielding electrode prevents false triggering signals due to material buildup on the electrodes; a switch control signal is only output when the material has actually reached the set point. |
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Product Type |
Standard (integrated) |
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Measurement Range |
0……250mm,0……300mm,0……350mm,0……400mm, 0……2000mm,0……3000mm,Customization |
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Output Signal |
NPN,PNP,Relay output |
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Power Supply |
24VDC (DC),220VAC (AC) |
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Process Connection |
G3/4 (External Thread) ,G1 (External Thread), |
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Electrical Connection |
Terminal wiring |
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Temperature Range |
Standard type: -20-180℃ |
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Material Of Wetted Parts |
304 Stainless steel |
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Shell Material |
Aluminum |
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Protection Level |
IP65 |
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Protection Level |
Non-explosion-proof type |
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Certificate |
CE certified |
