Capacitive Level Transmitter

Overview of Capacitive Level Transmitter

The Capacitive Level Transmitter is a high-precision instrument designed for continuous level measurement of liquids and solids. It operates on the principle of capacitance variation between a sensing probe and a reference electrode (typically the tank wall). As the material level rises or falls, the dielectric constant within the space changes, leading to a linear shift in capacitance. This change is accurately converted into a standard 4–20 mA DC output signal. Equipped with advanced RF amplitude stabilization technology, this transmitter effectively suppresses interference from material buildup, coating, and electrical noise, ensuring reliable performance in complex industrial vessels.

Features of Capacitive Level Transmitter

• Universal Media Compatibility: Suitable for continuous measurement of strongly corrosive, weakly corrosive, and non-corrosive media, including both liquids and granular solids.

• Extreme Temperature Resilience: Operates reliably across a vast temperature spectrum, from cryogenic conditions at -190°C up to high-heat environments of +250°C.

• High Pressure Capability: Robust construction supports process pressures ranging from vacuum (-0.1 MPa) up to 32 MPa.

• Stable Measurement: Performance is virtually unaffected by changes in tank pressure, ambient temperature, or humidity, providing consistent data in fluctuating conditions.

• RF Anti-Interference: Features specialized technology to ignore material "clinging" or buildup on the probe, which often causes false readings in traditional sensors.

• Hazardous Area Ready: Available in explosion-proof designs (Exd IIC T6 Gb) for safe operation in volatile oil, gas, and chemical environments.

• Flexible Electrode Designs: Offers rigid stainless steel probes for shorter distances (up to 3m) and flexible cable electrodes for deep tanks or silos (up to 60m), with optional PTFE sleeving for aggressive chemicals.

Applications of Capacitive Level Transmitter

• Oil & Gas: Monitoring levels in separators, storage tanks, and pressurized process vessels.

• Chemical & Fertilizer: Measuring aggressive acids, alkalis, and chemical reagents in both open and closed systems.

• Power Plants: Level control for cooling water, fuel tanks, and boiler feed systems.

• Metallurgy & Steel: Tracking the levels of process liquids and raw material powders or granules in silos.

• Water Treatment: Reliable monitoring for environmental protection facilities and wastewater management.

• Food & Light Industry: Precise level sensing for ingredients, beverages, and bulk solid processing.

• Solids Handling: Ideal for measuring powders and granules with a maximum particle size of ≤2mm.

Price of Capacitive Level Transmitter

The price of the Capacitive Level Transmitter is determined by several technical factors, including the required measurement range (rigid vs. flexible probe), the material of the electrode (304/316L or PTFE-coated), and the pressure/temperature ratings. Optional explosion-proof certifications and specific mounting flange sizes (DN40 to DN150) will also affect the final quotation. For a competitive price tailored to your specific application, please contact the ZINACA Instruments sales team with your vessel dimensions and media characteristics.

OEM Service

ZINACA Instruments provides professional OEM and customization services for capacitive level measurement solutions. Our team can assist with:

Custom Probe Engineering: Tailored electrode lengths up to 60m and specialized materials for unique chemical compatibility.

Private Labeling: Permanent laser engraving of your brand logo and model information on the transmitter housing.

Mounting Customization: A wide variety of flange standards and thread sizes (M27x2 or custom) to match existing tank nozzles.

Specialized Electronics: Custom calibration for specific dielectric constants and specialized output configurations to suit your control system. Please reach out to discuss how our manufacturing capabilities can support your industrial brand or project requirements.

Technical Specifications