YST Electromagnetic Flow Meter YST183F-A50XL
| Brand | YST |
|---|---|
| Origin | Liaoning, China |
| Model | YST183F-A50XL (DN50) |
| Nominal Pipe Size | DN50 (50–55 mm ID, adjustable insertion depth) |
| Flow Velocity Range | 0.1–10 m/s |
| Volumetric Flow Range (full pipe, DN50) | 0.000785–0.0785 m³/h |
| Accuracy | ±0.5% FS (standard conditions), ±1.0% FS (challenging conditions, e.g., low-conductivity or particulate-laden fluids) |
| Minimum Fluid Conductivity | ≥5 µS/cm |
| Operating Temperature | –20°C to +150°C |
| Max Working Pressure | 1.6 MPa |
| Electrode Materials | 316L stainless steel (standard), Hastelloy C-276 (corrosive media), Titanium (ultra-pure applications) |
| Lining Materials | PTFE (chemical resistance, high-temp), Neoprene rubber (abrasion resistance, wastewater) |
| Output Signals | 4–20 mA DC (analog), RS485 (Modbus RTU) |
| Power Supply | 220 V AC or 24 V DC |
| Sensor Protection Rating | IP65 (indoor/outdoor non-submersible), optional IP68 (submersible) |
| Ambient Operating Conditions | –25°C to +60°C, ≤95% RH (non-condensing) |
| Long-Term Drift | ≤0.1% FS/year |
| Repeatability | ≤0.2% FS |
| Excitation Method | Low-frequency rectangular wave magnetic excitation |
Overview
The YST Electromagnetic Flow Meter YST183F-A50XL is an insertion-type electromagnetic flowmeter engineered for precise, maintenance-free volumetric flow measurement of conductive liquids in industrial and municipal pipeline systems. Based on Faraday’s law of electromagnetic induction, the device generates a magnetic field perpendicular to the direction of fluid flow; as the conductive medium passes through this field, it induces a voltage proportional to the average flow velocity. This principle ensures that measurement is inherently independent of fluid density, viscosity, temperature, pressure, and turbulence profile—making it highly suitable for applications where process variables fluctuate significantly. Designed specifically for nominal pipe size DN50 (50–55 mm internal diameter), the YST183F-A50XL delivers stable performance across a wide velocity range (0.1–10 m/s) and supports real-time integration into automated control environments via standardized analog and digital outputs.
Key Features
- Insertion design with minimal process disruption: Enables hot-tap installation without pipeline shutdown, reducing commissioning time and operational downtime—particularly valuable in continuous-process facilities such as water treatment plants and chemical dosing lines.
- Robust signal processing architecture: Incorporates low-frequency rectangular wave excitation to suppress noise from stray electromagnetic fields, pipeline vibration, and asymmetric flow profiles—ensuring long-term stability with drift ≤0.1% FS/year and repeatability ≤0.2% FS.
- Material-configurable wetted components: Standard 316L stainless steel electrodes and PTFE lining provide broad compatibility with potable water, mild acids/bases, and food-grade liquids; optional Hastelloy C-276 electrodes and titanium electrodes extend service life in aggressive chemical environments; neoprene rubber lining offers enhanced abrasion resistance for wastewater applications.
- Dual-output interface: Simultaneous 4–20 mA analog output (HART-compatible wiring configuration supported) and RS485 serial interface (Modbus RTU protocol) facilitate seamless integration with PLCs, DCS platforms, SCADA systems, and cloud-based monitoring dashboards.
- Environmental resilience: IP65-rated sensor housing meets IEC 60529 requirements for dust-tight and water-jet resistant operation in indoor and outdoor installations; optional IP68-rated version enables submersion up to 10 m depth for buried or submerged pipeline monitoring.
Sample Compatibility & Compliance
The YST183F-A50XL is validated for use with liquids exhibiting minimum electrical conductivity of 5 µS/cm—covering a wide spectrum of process fluids including municipal wastewater, brine solutions, diluted acids and alkalis, fruit juices, dairy streams, and boiler feedwater. It is not suitable for hydrocarbons, deionized water, steam, or gases. While the instrument itself does not carry CE, UKCA, or ATEX certification, its electrical interfaces comply with IEC 61000-4 immunity standards (ESD, EFT, surge), and its analog output conforms to IEC 60381-1 (4–20 mA signal specification). For regulated industries, the device supports audit-ready data logging when paired with compliant host systems adhering to FDA 21 CFR Part 11 (electronic records/signatures) and GLP/GMP traceability requirements—provided appropriate system-level validation protocols are implemented by the end user.
Software & Data Management
The YST183F-A50XL operates as a field-level sensing node without embedded firmware-based configuration software. All parameter setup—including damping time, flow direction correction, zero calibration, and pulse output scaling—is performed locally via a three-button keypad with LCD display or remotely via Modbus register mapping (Function Code 03/06). Configuration changes are retained in non-volatile memory and survive power loss. When integrated into larger automation ecosystems, the device feeds time-synchronized flow data into historian databases (e.g., OSIsoft PI, Ignition, or custom MQTT brokers), enabling trend analysis, alarm generation, and mass-balance calculations. Its deterministic response time (<100 ms) and linear output behavior support closed-loop flow control applications when interfaced with PID controllers.
Applications
- Municipal water & wastewater management: Influent/outfall flow monitoring at treatment plants, district metering areas (DMAs), and secondary water supply networks—where reliability under variable conductivity and suspended solids is critical.
- Chemical process dosing: Precise metering of caustic soda, sulfuric acid, chlorine solutions, and other reagents in batch or continuous reaction systems, especially where corrosion resistance and regulatory compliance are mandatory.
- Food & beverage production: Monitoring of juice, syrup, milk, and cleaning-in-place (CIP) solution flows—leveraging FDA-compliant wetted materials and hygienic surface finishes.
- Power plant auxiliary systems: Condensate return, cooling water circulation, and demineralized water makeup flow verification—benefiting from insensitivity to temperature-induced fluid property shifts.
- Pharmaceutical utilities: Purified water (PW) and water-for-injection (WFI) distribution loop monitoring, provided conductivity remains above threshold and validation documentation is maintained per ISO 14644 and EU GMP Annex 15 guidelines.
FAQ
Is the YST183F-A50XL suitable for measuring non-conductive fluids such as oils or deionized water?
No. Electromagnetic flow measurement requires a minimum fluid conductivity of 5 µS/cm. Hydrocarbons, solvents, and ultra-pure water fall outside its operational envelope.
Can the device be calibrated in-situ without removing it from the pipeline?
Yes. Zero-point calibration can be performed under static no-flow conditions using the local keypad or Modbus command. Full span calibration requires traceable flow rig verification but is not required for routine operation due to inherent linearity and long-term stability.
What is the maximum allowable insertion depth for DN50 pipelines?
The probe length is optimized for standard wall-thickness Schedule 40 pipes. Insertion depth is adjustable within ±5 mm to accommodate variations in pipe ID and weld bead geometry—ensuring optimal magnetic field coverage across the flow profile.
Does the flowmeter support pulse/frequency output for totalization?
Not natively. Totalized volume must be computed externally using the 4–20 mA or Modbus instantaneous flow rate value and time-integration algorithms in the host system.
How does ambient temperature affect accuracy when operating near the upper limit of –25°C to +60°C?
Internal temperature compensation corrects for thermal drift in the magnetic coil and electrode circuitry. Field testing shows <±0.05% FS additional error across the full ambient range when fluid temperature remains within –20°C to +150°C.
