Overview
The Flowline Ultrasonic 004383 level transmitter is a non-contact ultrasonic sensor designed for continuous monitoring of liquid levels in industrial applications. The ultrasonic level transmitter emits a high frequency acoustic pulse from its transducer, which travels through the air gap, reflects against the liquid surface and returns to the transducer. This technology provides precise, maintenance-free measurement without touching the process fluid, making it ideal for corrosive, chemical, or hazardous liquids.
Key Features
- Non-contact ultrasonic measurement technology eliminates wear and maintenance
- Compatible with chemical, water, wastewater, and petroleum-based liquids
- DC current operation for flexible integration into control systems
- Offered in general purpose and intrinsically safe versions, the ultrasonic level transmitter provides reliable level measurement of non-foaming chemical, water, wastewater and petroleum based liquids in ambient tank or sump applications from 1-12 meters.
- Analog signal output for integration with PLCs and control systems
- Compact design suitable for tanks, sumps, and process vessels
Technical Specifications
| Manufacturer | Flowline, Inc. |
| Model | 004383 |
| Product Type | Ultrasonic Level Transmitter |
| Sensing Technology | Non-contact Ultrasonic |
| Measurement Range | 1 to 12 meters (varies by model variant) |
| Output Signal | 4–20 mA analog (standard) |
| Power Supply | DC voltage (loop-powered or external) |
| Process Connection | NPT or G threaded fitting (standard) |
| Transducer Material | Ceramic or PVDF (varies by application) |
| Suitable Liquids | Non-foaming chemicals, water, wastewater, oils |
| Condition | New, Open Box |
Typical Applications
Select this sensor for small tanks with non-foaming, non-condensing or highly vaporous media such as chemicals, water, wastewater and oil. Typical applications include IBC or drum, cooling tower, day tank, skid or machine, open channels and chemical feed. The 004383 is also suitable for:
- Bulk storage and neutralization tanks
- Chemical dosing and feed systems
- Wastewater treatment and sumps
- Cooling tower and process tank level control
- Tank inventory monitoring and automation
Compatibility & Replacements
Compatible With
- PLCs with 4–20 mA analog inputs (Allen-Bradley, Siemens, Mitsubishi, Omron, Schneider)
- Industrial control systems and data acquisition devices
- Flowline WebCal software for configuration and diagnostics
- SCADA systems with standard 4–20 mA input modules
- Analog level monitoring and alarm systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 004383 may serve as a replacement for older Flowline ultrasonic transmitter models within the same series; consult Flowline technical support for confirmed cross-references.
Works With
- Flowline WebCal configuration software for signal tuning and diagnostics
- Standard 4–20 mA analog input interfaces
- Industrial tank management and level control systems
- Temperature-compensated measurement for process accuracy






