YDK322 Capacitive Level Transmitter: Reliable Integrated Solution for High-Temperature, High-Pressure and Strongly Corrosive Medium Measurement

Product Overview

The Nexisense YDK322 capacitive level transmitter adopts advanced radio frequency capacitance detection technology. By measuring the capacitance change formed between the measuring electrode and the measured medium, it realizes high-precision conversion of material level or liquid level height. The series has no moving or elastic parts, with a simple and reliable structure. It is particularly suitable for long-term stable operation under harsh working conditions such as high temperature and high pressure, strong corrosion, easy crystallization and easy blockage. It is an ideal alternative to traditional float, submersible and differential pressure level transmitters.

Main Performance Parameters

Product Features

• Simple structure, no moving or elastic parts: Extremely low maintenance and highly reliable long-term operation.

• Suitable for harsh conditions such as high temperature and high pressure, strong corrosion, easy crystallization and easy blockage.

• Measurement value is not affected by medium temperature, specific gravity, viscosity or container pressure.

• Supports multiple communication protocols (HART, RS485, CAN), convenient for system integration.

• Self-calibration function: Convenient on-site zero point and range adjustment.

• Multiple wetted materials optional: Meets requirements of different corrosive media.

• Flexible installation methods (threaded, flanged): Convenient construction.

Typical Application Scenarios

• Petrochemical Industry: Level measurement in acid and alkali storage tanks, reaction kettles and crude oil separators.

• Power Industry: Boiler drum water level, high-pressure heater level and deaerator level monitoring.

• Water Treatment and Environmental Protection: Sewage treatment tanks, chemical dosing tanks and strong acid/alkali solution levels.

• Pharmaceutical and Light Industry: Fermentation tanks, ingredient tanks and other level detection requiring high reliability.

• Sealed Container Measurement: Continuous level monitoring inside high-pressure tanks and vacuum containers.

Its excellent high-temperature and high-pressure resistance and corrosion resistance make it the preferred instrument for level measurement in high-temperature and high-pressure sealed containers.

Selection Guide and Integration Precautions

Selection Points:

1. Select appropriate range according to the highest process level, and it is recommended to leave 10%-20% margin.

2. For high-temperature media (>150℃) or strong corrosive occasions, polytetrafluoroethylene (PTFE) or special alloy wetted materials are preferred.

3. For projects requiring remote configuration and diagnosis, HART protocol configuration is recommended.

4. For installation in hazardous areas, the explosion-proof grade (intrinsically safe or flameproof) must be clearly specified.

5. For batch engineering projects, contact Nexisense for OEM customization, including special flange specifications, communication protocols or low-power versions.

Integration Precautions:

• The probe should be installed perpendicular to the liquid surface to avoid turbulence interference near the feed inlet or stirring area.

• Use shielded cables for signal lines and pay attention to grounding for long-distance transmission.

• When integrating with DCS/PLC, it is recommended to use 4-20mA two-wire wiring.

• Regularly check the cleanliness of the probe surface to prevent severe crystallization or scaling from affecting capacitance change.

• Intrinsically safe products must be powered through a safety barrier to ensure intrinsic safety parameters match.

Nexisense supports OEM/ODM customization and bulk supply, and can provide complete technical solutions and long-term stable supply assurance according to the specific process conditions, system architecture and explosion-proof requirements of engineering companies.

FAQ

Q1. What are the core advantages of the YDK322 capacitive level transmitter compared to traditional submersible level transmitters?

The capacitive type adopts a non-contact capacitive sensing principle with no moving parts, making it particularly suitable for high-temperature, high-pressure, strongly corrosive and easy-to-crystallize media, while submersible types are easily affected by medium corrosion or blockage under these harsh conditions.

Q2. Does this product support the HART protocol? How is it integrated with existing DCS systems?

It supports 4-20mA with superimposed HART communication protocol. Remote configuration, diagnosis and calibration can be achieved through HART communicators or host software, with extremely high compatibility with mainstream DCS/PLC systems.

Q3. How to choose the wetted material when measuring strongly corrosive media?

For strong acid and alkali environments, polytetrafluoroethylene (PTFE) or Hastelloy probe material is recommended to effectively extend the service life of the instrument.

Q4. How to choose the explosion-proof grade? What is the main difference between intrinsically safe type and flameproof type?

Intrinsically safe ExiaⅡC T6 is suitable for Zone 0 and requires a safety barrier; flameproof ExdⅡC T5 is suitable for Zone 1/2 and can be directly connected to ordinary power supply. The specific choice must be determined according to the on-site hazardous area classification.

Q5. What customization services can Nexisense provide for bulk procurement?

Supports personalized customization of range, wetted material, flange specification, communication protocol, power supply voltage and display header. It also provides OEM labeling and bulk supply services.

Q6. What key matters need attention during installation in high-temperature and high-pressure environments?

The probe must be installed vertically to avoid bending deformation; ensure reliable flange sealing; for high-temperature conditions, it is recommended to use high-temperature resistant cables and provide thermal protection.

Q7. Does the product have a self-calibration function? How to perform on-site zero point and range adjustment?

It has a self-calibration function. Users can easily complete automatic zero point and range calibration through the two buttons on the instrument. The operation is simple and adapts to different on-site requirements.

Q8. How to maintain measurement accuracy after long-term operation?

Regularly check whether there is scaling or crystallization on the probe surface and clean if necessary; perform zero point calibration every 6-12 months; avoid strong mechanical impact on the probe.

Summary

With advanced radio frequency capacitance detection technology, no moving parts design and high reliability, the Nexisense YDK322 capacitive level transmitter provides an ideal solution for level measurement under complex conditions such as high temperature, high pressure and strong corrosion. Its rich communication protocol support, flexible installation methods and strong customization capability make it the preferred product for system integrators and engineering companies in automation projects in petrochemical, power, environmental protection, pharmaceutical and other fields.

If your project involves level measurement of high-temperature and high-pressure vessels, strongly corrosive medium measurement, or needs to replace traditional level instruments, please feel free to contact the Nexisense technical support team. We will provide professional selection advice, engineering technical support and OEM customization solutions according to specific process parameters, medium characteristics, on-site conditions and system integration requirements, helping your project to advance efficiently and operate stably in the long term.