+86 189 8978 2810

+86 189 8978 2810

803 Submersible Level Transmitter

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Hydrostatic submersible level transmitter

304 stainless steel housing with 316L diaphragm

IP68 waterproof design for long-term immersion

Stable 4–20mA output, optional RS485 communication

High-precision diffused silicon sensing element

Double-shielded vented cable for anti-interference performance

Custom measuring range and cable length available

803S version with integrated digital display

Suitable for tanks, wells, reservoirs, sewage, and industrial liquid level monitoring

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Application

Water Tanks & Storage Reservoirs

Continuous liquid level monitoring for water storage tanks, reservoirs, and supply systems, ensuring accurate level control and efficient water management.

Groundwater & Deep Well Monitoring

Designed for measuring underground water levels in wells and boreholes, providing reliable data for water resource monitoring and management.

Municipal Water Supply & Wastewater Treatment

Suitable for urban water systems, sewage plants, and treatment facilities, supporting stable operation and automated level control.

Industrial Process & Fire Water Tanks

Provides accurate level measurement for industrial liquid storage tanks, process vessels, and fire protection water systems in demanding environments.

Agricultural Irrigation & General Liquid Measurement

Ideal for irrigation systems and non-corrosive liquid applications, helping optimize water usage and maintain reliable operation.

Description

Description Background

The 803 / 803S Submersible Level Transmitter is a high-precision hydrostatic level measurement device designed for continuous liquid level monitoring in water tanks, reservoirs, wells, sewage systems, and industrial process applications. It uses a high-performance diffused silicon pressure sensing element to accurately convert liquid pressure changes into stable electrical signals. With a rugged stainless steel structure, the transmitter delivers reliable performance even in demanding industrial environments.

Featuring a 304 stainless steel housing, 316L stainless steel diaphragm, IP68 waterproof protection, and double-shielded vented cable, the 803 series provides excellent durability, long-term stability, and strong interference resistance. The optimized pressure inlet design helps prevent clogging and minimize pressure impact, ensuring accurate measurement. The 803 model offers standard analog signal output compatible with PLC, DCS, and control systems, while the 803S model integrates a local digital display for direct on-site level monitoring, simplifying operation and maintenance.

Features

01DEPENDABLE
Equipped with a high-performance diffused silicon sensor core, offering lower failure rates, higher transmission accuracy, and more precise liquid level measurement.
High-Quality Sensor Core
High-Quality Sensor Core
02EFFICIENT
Designed with a simple and clear wiring structure for convenient operation. The M6 threaded mounting hole design allows quick and secure installation.
Easy Wiring & Installation
Easy Wiring & Installation
03SECURE
Adopts a three-layer protection structure to significantly enhance pressure resistance, waterproof performance, and long-term operational reliability.
Triple Protection Design
Triple Protection Design
04CONVENIENT
Features an intelligent circuit board with automatic temperature compensation and linear calibration, ensuring stable output signals and strong interference resistance.
Premium Electronic Components
Premium Electronic Components

Technical Details

Product Type:

Submersible Level Transmitter

Product Model:

803 / 803S

Size:

See attached drawing

Type:

Hydrostatic pressure level transmitter

Operating Temperature:

-20°C to 80°C

Display Type:

Standard Version / LCD Digital Display Version

Measurement Range:

0–1m to 0–200m (Optional)

Accuracy:

±0.5% FS

Output Signal:

4–20mA / RS485 (Optional)

Power Supply:

12–36V DC

Pressure Type:

Gauge Pressure

Protection Rating:

IP68

Electrical Connection:

Direct Cable Output

Overload Capacity:

150% FS

Long-Term Stability:

≤0.2% FS/Year

Application Medium:

Corrosive Liquids, Acids, Alkalis, Chemical Solutions

Installation Method:

Submersible Installation

Display Unit:

Liquid Level Value Display (Digital Display Version)

Accessories

We reserve the right to make technical alterations without prior notice.
Dimension Drawing
803 Wiring diagram

What liquids can the 803F level transmitter measure?

The 803F is designed for corrosive liquids, including acids, alkalis, chemical solutions, wastewater, and other aggressive media compatible with PTFE and 316L stainless steel materials.

Does the 803F support a digital display version?

Yes. The 803F series is available in both standard transmitter and LCD digital display versions. The display version allows direct on-site liquid level monitoring.

What output signals are available?

Standard output is 4–20mA, with RS485 communication available for industrial automation and remote monitoring systems.

Is the 803F suitable for strong acid and alkali environments?

Yes. The PTFE armored structure provides excellent chemical resistance, making it suitable for strong acids, strong alkalis, and other highly corrosive liquids.

Can the measuring range be customized?

Yes. Different measuring ranges and cable lengths can be customized according to tank depth and application requirements.

What protection rating does the 803F have?

The transmitter features an IP68 protection rating, allowing long-term submerged operation in harsh environments.

How is the 803F installed?

The sensor is installed directly into the liquid for submersible level measurement. Proper cable fixing is recommended to ensure stable and accurate operation.

What industries commonly use the 803F?

The 803F is widely used in chemical processing, wastewater treatment, acid and alkali storage tanks, electroplating systems, pharmaceutical plants, and industrial liquid storage applications.

Does the 803F require regular maintenance?

Under normal conditions, the transmitter requires minimal maintenance. Periodic inspection and cleaning of the sensor surface are recommended for long-term accuracy.

Can the 803F be connected to PLC or SCADA systems?

Yes. With 4–20mA or optional RS485 output, the transmitter can be integrated with PLC, SCADA, DCS, and other industrial control systems.

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