YST Ultrasonic Flow Meter for Municipal Wastewater – YST305D80BF223 Integrated Spool-Type Flowmeter
| Brand | YST |
|---|---|
| Origin | Liaoning, China |
| Model | YST305D80BF223 |
| Pipe Size | DN80 |
| Flow Velocity Range | 0.01–15 m/s |
| Accuracy | ±0.5% of reading (v ≥ 0.3 m/s), ±1.0% of reading (0.1 ≤ v < 0.3 m/s) |
| Repeatability | ≤ ±0.2% |
| Medium | Single-phase liquid with ≤1% suspended solids, viscosity ≤1000 cP |
| Sensor Operating Temperature | −40°C to +80°C |
| Converter Operating Temperature | −20°C to +60°C |
| Humidity | ≤95% RH (non-condensing) |
| IP Rating | IP65 |
| Output | 4–20 mA DC (load ≤750 Ω), pulse (0–1000 Hz, 50% duty cycle) |
| Communication | RS485 Modbus-RTU |
| Power Supply | AC 220 V ±10% (50/60 Hz) or DC 24 V ±15% |
| Power Consumption | ≤15 W |
| Wetted Materials | Carbon steel spool body, GB/T 9119 flanges, piezoelectric ceramic transducers |
Overview
The YST Ultrasonic Flow Meter for Municipal Wastewater – YST305D80BF223 is an integrated spool-type transit-time ultrasonic flowmeter engineered specifically for continuous, non-intrusive flow measurement in pressurized municipal wastewater conveyance systems. Unlike clamp-on or insertion-style meters, this device features a factory-assembled, full-bore carbon steel spool section with permanently mounted dual-path ultrasonic transducers—ensuring optimal acoustic coupling, long-term signal stability, and minimal pressure loss. The transit-time principle relies on precise measurement of the time difference between upstream and downstream ultrasonic pulses traveling through the flowing medium; this differential is directly proportional to the average axial velocity across the pipe cross-section. Designed to operate reliably under variable hydraulic conditions—including low-flow regimes, high-turbidity effluent, and intermittent surges—the YST305D80BF223 delivers traceable, repeatable volumetric flow data without moving parts, mechanical wear, or flow obstruction.
Key Features
- Dual-Path Transit-Time Architecture: Two independent ultrasonic paths arranged diagonally across the pipe bore compensate for asymmetric velocity profiles commonly found in aging or partially filled sewer lines, improving measurement robustness in real-world hydraulic conditions.
- Integrated Spool Design (DN80): Pre-calibrated, flanged carbon steel spool conforms to GB/T 9119 standard, enabling direct in-line replacement of existing pipeline segments—eliminating field welding, alignment jigs, or process shutdowns during commissioning.
- Wide Dynamic Range: Capable of resolving flow velocities from 0.01 m/s (micro-flow detection) up to 15 m/s, supporting both low-flow monitoring during dry-weather infiltration and peak-flow verification during storm events.
- Industrial-Grade Electronics: Converter unit incorporates EMI-hardened circuitry, temperature-compensated time-of-flight processing, and automatic gain control—ensuring stable operation near variable-frequency drives, substations, and other electromagnetic noise sources typical in pump stations and lift stations.
- Low-Maintenance Construction: Piezoelectric ceramic transducers are hermetically sealed within the spool wall; no wetted electronics or replaceable consumables. Routine maintenance is limited to periodic external sensor face cleaning—no disassembly or recalibration required under normal service conditions.
Sample Compatibility & Compliance
The YST305D80BF223 is validated for use with single-phase municipal wastewater streams containing ≤1% total suspended solids (TSS) and dynamic viscosities up to 1000 cP—covering typical secondary effluent, combined sewer overflows (CSO), and primary clarifier outflow. It is not intended for sludge, aerated flows, or multiphase mixtures with entrained air or gas pockets. While not certified to ISO 4064 or MID (Measuring Instruments Directive), its design adheres to fundamental metrological principles outlined in ISO/TR 11379 and IEC 61000-6-2 (EMC immunity). The 4–20 mA and Modbus-RTU outputs support integration into SCADA and telemetry platforms compliant with IEC 62443 cybersecurity frameworks. Data logging and alarm thresholds can be configured to align with local regulatory reporting requirements (e.g., EPA NPDES permit monitoring, EU Urban Wastewater Treatment Directive Annex I).
Software & Data Management
The meter includes embedded firmware supporting local configuration via keypad and LCD display, as well as remote parameterization via Modbus-RTU over RS485. Configuration parameters include damping time, flow direction lock, zero calibration offset, and pulse output scaling. While the device does not host onboard data storage, it supports real-time streaming of instantaneous flow rate (L/s, m³/h), cumulative volume (m³), velocity (m/s), and diagnostic status flags (e.g., signal quality index, transducer health, temperature drift alert). When interfaced with industry-standard SCADA HMI software (e.g., Ignition, Siemens Desigo, or Schneider EcoStruxure), the YST305D80BF223 enables automated generation of daily flow summaries, anomaly detection alerts, and audit-ready CSV export—facilitating GLP-aligned recordkeeping where required by municipal utility QA protocols.
Applications
- Real-time flow monitoring at wastewater treatment plant influent and effluent points
- Leak detection and flow balance analysis across trunk sewer networks
- CSO event quantification and compliance reporting per regulatory consent decrees
- Performance validation of pumping stations and gravity-fed force mains
- Integration into digital twin models for hydraulic simulation and predictive maintenance planning
- Temporary installation during pipeline rehabilitation projects requiring minimal system downtime
FAQ
Is the YST305D80BF223 suitable for measuring flows containing grease or biofilm buildup?
Yes—the transducer faces are recessed and flush-mounted within the carbon steel spool, minimizing surface accumulation. Periodic manual wiping during routine manhole inspections is sufficient to maintain acoustic coupling integrity.
Can this meter be used in partially filled pipes?
No—it is designed exclusively for full-pipe, pressurized flow applications. For open-channel or gravity sewer monitoring, a separate ultrasonic level sensor paired with a hydraulic model is recommended.
Does the device meet NIST-traceable calibration standards?
The meter is factory calibrated using reference water flow rigs traceable to national metrology institutes. Field recalibration is not supported; however, end-users may perform zero-flow verification and signal quality diagnostics per manufacturer’s procedure.
What is the expected service life under continuous municipal wastewater exposure?
With proper installation (avoiding sustained exposure to H₂S-saturated atmospheres above 50 ppm), the spool body and transducers exhibit >15 years of operational service life, consistent with ASTM A106 Grade B carbon steel corrosion resistance in neutral-to-mildly acidic effluent environments.
Is explosion-proof certification available for this model?
Not by default. The standard YST305D80BF223 carries no ATEX, IECEx, or UL hazardous location rating. For installation in classified zones, consult YST engineering for custom intrinsically safe barrier integration options.
