PTFE rod antenna anti-corrosion radar level meter

Product Overview

The Anpu Stick PTFE Anti-Corrosion Radar Level Meter uses a corrosion-resistant, fully sealed PTFE rod antenna structure, specifically designed for level measurement of strong acids, strong alkalis, organic solvents, and other highly corrosive liquids. In chemical storage tanks, acid-alkali tanks, wastewater treatment, and various corrosive working conditions, the instrument can operate stably and continuously in complex and harsh environments. The product adopts a non-contact continuous measurement principle, effectively avoiding direct contact between the instrument and the corrosive medium being tested, greatly reducing the risk of damage caused by corrosion and significantly extending the instrument's service life.

This product is especially suitable for storage tanks of strong acids such as hydrochloric acid, sulfuric acid, and nitric acid, as well as long-term level monitoring needs for sodium hydroxide solutions and various chemical solvents. For corrosive conditions, PTFE is currently recognized as the preferred process contact material solution, offering excellent acid and alkali resistance as well as solvent corrosion resistance. The AmpuInstrument Rod-Type PTFE Anti-Corrosion Radar Level Meter uses fully sealed PTFE materials to manufacture the antenna and process seals, ensuring that every part of the instrument contacts the medium with excellent corrosion resistance.

Core advantages

● Fully sealed PTFE rod antenna with strong corrosion resistance.
 The antenna is made of polytetrafluoroethylene (PTFE) material, offering excellent acid and alkali resistance and solvent resistance. The fully sealed structure effectively prevents media penetration, and the antenna surface is smooth and prevents material from caking. It demonstrates excellent resistance to various highly corrosive media such as hydrochloric acid, sulfuric acid, and sodium hydroxide, ensuring long-term use of the instrument.

● 26GHz high-frequency millimeter wave technology, stable and reliable.
 The 26GHz FMCW (FMCW) technology operates in the millimeter wave band, with a shorter wavelength and concentrated energy, capable of penetrating corrosive media such as thin mist, slight crystals, and condensate. For solvent-based media with low dielectric constant, the 26G radar enables more stable and accurate level measurements. The beam angle can reach as little as 8°, with highly concentrated energy, effectively enhancing echo signal strength. Even during stirring, foaming, and other conditions, it can accurately identify the true liquid level.

● Non-contact measurement method, balancing corrosion resistance and maintenance-free The
 non-contact principle completely isolates electronic components and metal casings from corrosive media environments, preventing probe damage or signal failure caused by media erosion. This not only ensures long-term measurement reliability but also significantly reduces equipment failure rates and maintenance costs.

● Anti-saging and Anti-Condensation Design The
 rod antenna has a smooth surface and simple structure. Combined with the strong hydrophobicity and anti-adhesion ability of PTFE materials, even when measuring liquid levels of easily crystallized or adhering media, it is not easily disturbed by material or condensation, and normal measurement is maintained almost without the need for a blowing device.

● Integrated corrosion-resistant structure with multiple process protections: Both
 the antenna and process connections use PTFE fully wrapped materials. Process connections can be selected with PTFE flange or stainless steel with PTFE lining to meet various installation needs such as flanges and threads. The fully sealed structure completely isolates metal components from the medium, ensuring no contact between the medium and the metal material.

● Meets diverse output and debugging needs:
 supports 4-20mA+HART two-wire and RS485+Modbus four-wire output modes, making it easy to connect to various industrial control systems. On-site is equipped with LCD displays and button controls, supports mobile Bluetooth configuration and remote parameter tuning, significantly reducing on-site operation and maintenance difficulty.

Technical specifications

The above parameters are typical specifications; please refer to the actual product configuration. If you have special working condition requirements, please feel free to contact Anpu Yi's sales engineers for customized selection.

Product model and selection instructions

Ampu-Yi Bar-Type PTFE Anti-Corrosion Radar Level Meter offers multiple subseries according to different working conditions, adapting to various corrosive liquid measurement scenarios:

The standard anti-corrosion type
 uses a fully sealed PTFE rod antenna, with a measurement range of 0.3m–10m and an accuracy of ±5mm, suitable for small and medium-sized acid-alkali storage tanks, process reaction tanks, and similar applications.

The high-precision anti-corrosion type
 uses an optimized PTFE rod antenna and a high-sensitivity receiving circuit, with a measurement range of 0.3m–30m and an accuracy of up to ±5mm, suitable for process containers with stricter liquid level control requirements.

The high-temperature anti-corrosion type
 uses a special high-temperature resistant sealing structure, with process temperatures up to +200°C, suitable for working conditions involving high-temperature corrosive media.

The universal adjustable anti-corrosion type
 is equipped with a universal adjustment mechanism, allowing flexible antenna angle adjustment, suitable for measuring corrosive media in conical containers or irregular material surfaces.

Reference for anti-corrosion selection

Recommendations for matching media and anti-corrosion materials

For the vast majority of corrosive media, polytetrafluoroethylene (PTFE) materials offer excellent corrosion resistance, making them a reliable and economical choice.

Working principle

The Anpu Stick PTFE Anti-Corrosion Radar Level Meter uses advanced Frequency Modulated Continuous Wave (FMCW) technology. The instrument antenna continuously emits a 26G millimeter wave at a frequency that increases linearly toward the measured medium; the electromagnetic waves reflect off the surface of the medium. The reflected echo signals are received by the antenna and processed in real time through electronic circuits.

Since the propagation speed of electromagnetic waves in air is constant (speed of light), the microprocessor can accurately calculate the distance from the antenna end face to the medium surface based on the frequency difference between the transmitted signal and the reflected echo, thereby determining the level height. The unique signal processing mechanism of FMCW technology effectively suppresses false echoes caused by liquid level fluctuations, stirring interference, and tank internal obstacles, enabling stable and accurate data output even in highly corrosive chemical liquids and conditions prone to crystallization and material daggging.

Typical applications

Ampu's rod-type PTFE anti-corrosion radar level meter is widely used in liquid level measurement scenarios for the following highly corrosive media:

• Chemical industry: Level monitoring of various strong acid storage tanks including hydrochloric acid, sulfuric acid, nitric acid, and phosphoric acid

• Fine chemicals: storage tanks for chemical raw materials such as organic solvents, benzenes, alcohols, ketones, etc

• Pharmaceutical industry: acid-base neutralization tanks and reactors in various pharmaceutical processes

• Metallurgical industry: electrolyte storage tanks, pickling tanks, waste acid recovery systems

• Water treatment field: industrial wastewater storage tanks, acid neutralization tanks, municipal sewage level monitoring

• New materials and electronic chemicals industry: level measurement of high-purity chemical tanks and corrosive electronic chemical liquids

For more typical working condition selection suggestions, please contact the Ampuyi technical team for in-depth understanding.

Installation precautions

To ensure the Ampu Instrument Rod-Type PTFE Anti-Corrosion Radar Level Meter performs optimally under highly corrosive conditions, please pay attention to the following during installation:

• Installation location: For flat-bottom storage tanks, it is recommended to install them at 1/4 or 1/6 of the tank diameter; For conical bottom tanks, it is recommended to install them at the center of the tank top to ensure measurement reaches the bottom.

• Avoid feed inlets and obstacles: Instrument installation should avoid directly above the feed port to prevent the feed flow from directly impacting the antenna area. At the same time, antenna beams should avoid facing the tank stirrer, ladders, heating coils, and other structures inside the tank.

• Pipe Connection Length Control: The angled cone section of the rod antenna is the effective area for electromagnetic wave transmission and reception; it must be fully extended into the tank. If the installation of the conduit is too long, the metal cylinder section of the antenna should be extended to ensure the effective transmission area of the antenna is fully exposed inside the tank.

• Distance from tank wall: It is recommended to be at least 30cm away from the tank wall. Installation too close may generate strong tank wall reflection signals, affecting measurement accuracy.

• Protection from direct sunlight and rain: When installing outdoors, if the instrument is under strong sunlight, shading and rainproof measures should be taken to extend the LCD display's lifespan and ensure long-term stability.

• Corrosion-resistant connections: Flange connections should preferably use PTFE flanges or 316L stainless steel flanges with PTFE lining; For threaded connections, it is recommended to use corrosion-resistant G11/2A stainless steel threads combined with PTFE raw tape for sealing.

Debugging and maintenance

The Anpu Stick PTFE Anti-Corrosion Radar Level Meter supports a variety of convenient human-machine operation and remote maintenance methods:

• On-site Commissioning: The device is equipped with a 128×64 high-definition LCD large display, combined with four buttons on the panel for menu configuration and parameter adjustment. While obtaining measurements through the glass window, real-time echo curves and signal strength can also be observed on site.

• Bluetooth Debugging: Built-in Bluetooth 5.0 wireless communication module, allowing on-site engineers to wirelessly connect to instruments using their phones. All parameter settings can be completed without climbing onto the tank top, significantly improving work efficiency and safety.

• 4G Remote Debugging: Supports 4G network communication, allowing remote access to instruments via the cloud platform, enabling parameter settings, real-time status monitoring, and remote diagnosis of common faults, helping management teams monitor the entire plant's instrument operation in real time.

• Host position software debugging: Using the USB-to-RS485 serial port to connect the instrument and PC, run the ampumeter host computer analysis software, which can perform instrument parameter configuration, echo curve viewing and analysis, fault diagnosis and troubleshooting, and firmware updates.

Service and support

Anpuyi always adheres to the principle of "technology-based, reliable quality," providing you with comprehensive product service guarantees and technical support and maintenance throughout the entire lifecycle of pre-sale, in-sale, and after-sale:

• Professional product selection guidance and working condition consultation

• Detailed on-site installation and commissioning technical support

• Professional training for operators and maintenance personnel

• Rapid after-sales issue response and remote fault diagnosis

• Core components and spare parts are provided

• Regular follow-ups and equipment health checks