Submersible Pressure Transmitter
The Submersible Pressure Transmitter is a specialized sensor designed to measure liquid level depth.
Read MoreMODEL: ZNC-PT-LT
The Submersible Pressure Transmitter is a specialized sensor designed to measure liquid level depth. It operates based on the hydrostatic pressure principle: the transmitter is submerged to the bottom of the liquid, where it measures the pressure exerted by the liquid at that depth. This pressure is directly proportional to the liquid depth (P = ρgh). By measuring this pressure, the instrument can accurately calculate the liquid level height.
Overview of Submersible Pressure Transmitter


Our Submersible Level Transmitter (hereinafter referred to as the product) is a multi-functional digital intelligent instrument developed using imported isolated pressure-sensitive components, combined with precision temperature compensation and an enhanced transmission circuit. It is specifically designed for liquid height measurement in all types of conductive containers and low-viscosity liquid media.
What is our Submersible Level Transmitter, and what are its main application fields? What are its key features?
Product Definition: The product is a hydrostatic level transmitter featuring a solid-state structure with no moving parts. The conversion and amplification circuit utilizes high-quality imported components, providing standard DC 4-20mA, 0-5V, 0-10V, or digital signal output (RS485, Hart) for direct connection to A/D acquisition systems.
Main Application Fields: Applicable to all media and low-temperature liquid media, suitable for vessels without volume restrictions, such as tanks, cisterns, and water towers. Typical applications include sewage pool level measurement at sewage treatment plants and high-rise water tank level detection.
Core Features:
Wide Media Compatibility: Capable of high-precision measurement across a wide range of media, from water to sewage, oil to viscous liquids, and is unaffected by media foaming or deposition.
High Reliability and Durability: Solid-state structure ensures no moving parts, resulting in high reliability and long service life. New materials resist fatigue and wear.
Excellent Anti-Interference: Features power reverse polarity protection, bypass capacitor filtering, and shielding measures to achieve anti-electromagnetic/radiofrequency interference (up to 30V/m).
Features of Our Submersible Level Transmitter
Summary of product selling points:
Wide Media and Application Compatibility: Applicable to all media, including sewage and high-viscosity liquids; unaffected by foaming or deposition. Available in multiple probe types (Cable type, Rod type, Armored cylinder type, Corrosion-resistant type).
Excellent Stability and Accuracy: High accuracy options of 0.2% or 0.5%; long-term stability with annual drift less than ± 0.1%.
Robust Protection and Anti-Interference: Strong anti-electromagnetic/radiofrequency interference capability (30V/m), including power reverse polarity protection and overload current limiting protection.
Reliable Structure and Durability: Utilizes new materials like 316L Stainless Steel/Ceramics/Diffused Silicon, offering high resistance to shock, vibration (0.01% at 200 HZG), and overload capacity (150%). Protection class up to IP68.
Multiple Outputs and On-Site Display: Offers multiple signal outputs (4-20mA, 0-5V, 0-10V, Hart, RS485) and an optional on-site display for direct level observation.
Applications of Our Submersible Level Transmitter
Description of product applications.
Our Submersible Level Transmitter is an ideal choice for reliable and accurate level monitoring due to its high reliability and environmental adaptability:
Sewage Treatment: Used for precise level measurement in sewage treatment plants and sewage pools, as its design is less affected by sedimentation.
Water Resource Management: Monitoring liquid levels in water towers, cisterns, and reservoirs to ensure stable water supply system operation.
Industrial Tanks: Measuring the liquid level in open tanks storing oil or other low-viscosity, non-specific media.
Remote Data Acquisition: Digital output options (RS485 or Hart) allow direct connection to remote A/D acquisition systems for automated monitoring.
Price of Our Submersible Level Transmitter
Product prices will vary based on specific parameters such as accuracy grade (0.5% or 0.2%), probe type (Cable, Rod, or Armored cylinder), range depth (0.2m up to 500m), output signal (4-20mA or Hart/RS485), and probe housing material (SS or PTFE). If you wish to inquire about the latest pricing for our Submersible Level Transmitter, please feel free to contact us for a current quotation.
Our Submersible Level Transmitter OEM Service
ZINACA Instrument is a professional industrial automation instrumentation equipment manufacturer. We specialize in providing highly reliable and high-performance solutions for pressure, flow, and temperature measurement.
We have a complete production and quality control system, enabling us to customize reliable, high-standard Submersible Level Transmitters for your specific needs and operating conditions. If you are seeking OEM/ODM services for our Submersible Level Transmitter, including a customized range, special materials for corrosive media probes, cable length, or private labeling, please contact our professional team. We are ready to offer flexible and cost-effective collaboration proposals.
Technical Specifications
| Level Sensor Technical Specifications | |
|---|---|
| Range | Cable type: 0–0.2 m to 0–500 m (customizable) Rod type: 0–0.2 m to 0–3 m (customizable) Armored cylinder type: 0–0.2 m to 0–500 m (customizable) Corrosion-resistant type: 0–0.5 m to 0–20 m (customizable) |
| Accuracy | 0.5%, 0.2% |
| Pressure Overload | 150% |
| Protection Class | IP65, IP68 |
| Power Supply | 24 VDC (15–36 VDC) |
| Output | 4–20 mA, 0–5 V, 0–10 V, HART, RS485 |
| Temperature Drift | -10℃ to 50℃ <0.2%; -20℃ to 85℃ <0.5% |
| Electrical Insulation Resistance | >100 MΩ at 500 VDC |
| EMI/RFI Resistance | 30 V/m, 10 kHz–500 MHz |
| Long-term Stability | Annual drift < ±0.1% |
| Compensation Temperature | 0℃–50℃ |
| Operating Temperature | 0℃–80℃ |
| Storage Temperature | -40℃–100℃ |
| Shock / Vibration Resistance | 200 Hz G, 0.01% variation; annual stability better than 0.1% |
| Pressure Transfer Diaphragm Material | 316L Stainless Steel, 96% Alumina Ceramic, Diffused Silicon |
| Probe Housing Material | Stainless Steel, PTFE |
| Cable Sheath Material | Polyethylene or Polyamide |
| Sealing Material | Nitrile Rubber, Fluorocarbon Rubber |
| Measuring Medium | Liquids compatible with listed materials |
| Junction Box Housing Material | Die-cast aluminum alloy with epoxy-coated surface |
The Submersible Pressure Transmitter is a specialized sensor designed to measure liquid level depth.
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Read MoreNo. 12, Within Waihuan Industrial Company Compound, Fujin Road, Zhongbei Town, Xiqing District, Tianjin, China