Chemical Resistant Ultrasonic Level Sensor (PTFE / PVDF) | SUL801
PTFE / PVDF Anti-Corrosion Ultrasonic Level Transmitter for Harsh Chemicals
Engineered for aggressive environments, strong acids, alkalis, and chemical processing tanks. Constructed with a full PTFE wetted structure to deliver non-contact level measurement where metallic sensors corrode.
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Variants Available:
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SUL801C: 0.25 m – 2.5 m range
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SUL801D: 0.3 m – 5.0 m range
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SUL801BC: Heavy-duty anti-corrosion up to 10 m range
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Wetted Material: High-grade PTFE / PVDF / Chemical-Resistant Synthetic Body
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Signal Outputs: 4–20 mA or RS485 Modbus RTU
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Ideal For: Hydrochloric acid, sulfuric acid, sodium hydroxide, electroplating baths, and liquid fertilizer storage.
Description
Reliable Non-Contact Level Measurement in Tight Industrial Spaces
The UL106 Ultrasonic Level Transmitter combines industrial durability with an ultra-compact M30 form factor. Designed for automated liquid monitoring where traditional large-flange sensors cannot fit, the UL106 delivers accurate, real-time level measurements without coming into direct contact with the process fluid.
Heavy-Duty Non-Contact Measurement for Severe Chemical Environments
Standard stainless steel or chrome-plated transducers quickly fail when exposed to acid fumes, caustic vapors, or harsh chemical splashes. The SUL801 Chemical Series (BC/C/D) is built with a specialized PTFE / PVDF acoustic face and corrosion-resistant housing to withstand extreme chemical attack while delivering reliable continuous level data.
Advanced Internal Shielding & Digital Filtering
Built using surface-mount technology (SMD) and custom ASC processing chips, all circuit boards inside the SUL801 feature internal electromagnetic shielding and digital filtering algorithms. This prevents signal distortion caused by surface turbulence, vapor layer interference, or nearby electrical noise.
Target Industry Applications:
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Chemical Processing Plants: Acid storage tanks (HCl, H2SO4, HNO3), caustic soda dosing, and reagent vessels.
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Surface Finishing & Electroplating: Acid pickling baths, etching tanks, and plating solution monitoring.
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Agriculture & Fertilizer Storage: Liquid fertilizer containers, pesticides, and corrosive chemical blending.
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Hazardous Liquid Storage & Wastewater Treatment: Industrial effluent pits containing aggressive solvents or corrosive chemicals.
Additional information
| Measurement Range & Spec | 0.25 – 2.5m (SUL801C), 0.3 – 5.0m (SUL801D), 0.6 – 10.0m (SUL801BC – Heavy Duty) |
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Features
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100% PTFE / PVDF Anti-Corrosion Wetted Structure: Resists chemical corrosion from strong acids, alkalis, and aggressive organic solvents.
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Multiple Range Options (2.5m, 5m, 10m): Tailored models to fit shallow dosing tanks up to bulk chemical storage vats.
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Non-Contact Acoustic Sensing: No moving parts, zero sensor fouling, and no physical wear from corrosive media.
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Versatile Process Integration: Standard 4–20 mA analog output or RS485 Modbus RTU interface for seamless PLC integration.
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Factory Aged & Shielded: Circuit boards undergo 48-hour high/low temperature electrical aging for long-term industrial reliability.
Specification
| Parameter | SUL801C | SUL801D | SUL801BC |
| Primary Focus | Acid & Alkali (Short Range) | Acid & Alkali (Mid Range) | Heavy Chemical / Harsh Env. |
| Measuring Range | 0.25 m – 2.5 m | 0.3 m / 0.5 m – 5.0 m | 0.6 m – 10.0 m |
| Blind Zone | ≤ 0.25 m | ≤ 0.3 m – 0.5 m | ≤ 0.6 m |
| Beam Angle | 7.5° | 15° | 10° |
| Accuracy | $le 1%$ F.S. | $le 1%$ F.S. | $le 1%$ F.S. |
| Wetted Material | PTFE / Anti-Corrosion NLEPF | PTFE / Anti-Corrosion NLEPF | Heavy PTFE / Anti-Corrosion |
| Supply Voltage | 3.3 – 30 VDC | 3.3 – 24 VDC | 3.3 – 24 VDC |
| Signal Output | 4–20 mA / RS485 Modbus | 4–20 mA / RS485 Modbus | 4–20 mA / RS485 Modbus |
| Protection Rating | IP65 / IP67 (IP68 optional) | IP65 / IP67 (IP68 optional) | IP65 / IP67 (IP68 optional) |
FAQ
Q: Which chemicals are compatible with the SUL801BC/C/D series?
A: Thanks to its full PTFE / PVDF acoustic face and synthetic body, the SUL801 series is compatible with almost all strong acids (such as hydrochloric acid, nitric acid, and sulfuric acid), alkalis (sodium hydroxide), bleach, and aggressive industrial reagents.
Q: What is the difference between SUL801C, SUL801D, and SUL801BC?
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SUL801C: Compact 2.5 m range with a narrow 7.5° beam angle for small acid dosing tanks.
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SUL801D: 5 m range ideal for standard chemical storage drums and vats.
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SUL801BC: Heavy anti-corrosion model designed for deep chemical storage tanks up to 10 m.
Q: How do chemical vapors affect ultrasonic measurement?
A: Dense vapors can alter the speed of sound slightly. The SUL801 incorporates digital filtering to maintain stability. For sealed tanks with extreme pressurized vapor layers, ensure proper sensor placement away from direct fill spouts or turbulent agitators.
