
( Brand: Hedland ), ( Manufacturer Part Number: H201A-020-HT )
The **Hedland H201A-020-HT Flowmeter** is a high-performance, compact, and versatile inline flow sensor designed for precision measurement of liquid flow rates in a wide range of industrial, commercial, and laboratory applications. Engineered with advanced ultrasonic Doppler technology, this flowmeter delivers accurate and reliable flow readings in both gallons per minute (GPM) and liters per minute (LPM), making it an ideal choice for systems requiring real-time monitoring of low to moderate flow volumes. With a specified measurement range of **0.2 to 2.0 GPM (0.76 to 7.5 LPM)**, the H201A-020-HT excels in applications such as HVAC systems, water treatment processes, chemical dosing, irrigation control, and laboratory fluid handling, where consistent and precise flow data is essential for efficiency and compliance.
Featuring a **1-7.5 inch (25-190 mm) pipe size**, the flowmeter is designed to integrate seamlessly into existing piping systems, offering a non-intrusive and maintenance-free solution. Its robust construction, typically made from durable materials such as stainless steel or PVC, ensures resistance to corrosion, chemical exposure, and environmental stressors, extending the device s operational lifespan while maintaining accuracy under demanding conditions. The unit operates on a low-power consumption basis, often powered by a 24V DC supply, and is equipped with configurable digital outputs, including pulse, analog (4-20 mA), or RS-485 communication interfaces, allowing for easy integration with PLCs, data loggers, or SCADA systems for automated monitoring and control.
One of the standout features of the H201A-020-HT is its **self-cleaning and self-diagnostic capabilities**, which minimize downtime and ensure long-term reliability. The ultrasonic Doppler sensor detects flow by measuring the time-of-flight of sound waves through the fluid, providing instantaneous readings without the need for moving parts or pressure drops. This design eliminates the risk of clogging or wear associated with mechanical flowmeters, making it particularly suitable for applications involving particulate-laden or viscous fluids. Additionally, the flowmeter s compact and modular design allows for easy installation in tight spaces, while its adjustable mounting brackets and quick-connect fittings simplify setup and reduce installation time.
For applications requiring enhanced functionality, the H201A-020-HT can be paired with optional accessories such as remote displays, flow totalizers, or alarm modules, enabling advanced monitoring and alert capabilities. Its user-friendly interface, often featuring an LCD screen with programmable parameters, allows operators to customize settings such as flow units, calibration factors, and alarm thresholds directly on-site. Whether deployed in a water filtration plant, a pharmaceutical manufacturing facility, or a precision irrigation system, this flowmeter delivers unmatched accuracy, durability, and adaptability, making it a cornerstone of modern fluid management solutions.
### **Pros and Cons of buying a Hedland H201A-020-HT Flowmeter (0.2 2.0 GPM / 1 7.5 LPM)**
#### **Pros:**1. **Precision and Accuracy** The H201A series is known for its high-precision measurements, making it suitable for applications requiring consistent flow monitoring in water, steam, or gas systems.
2. **Wide Flow Range** The 0.2 2.0 GPM (1 7.5 LPM) range covers many small-scale applications, including HVAC systems, irrigation, laboratory setups, and light industrial processes.
3. **Compact and Space-Efficient Design** The inline flowmeter is designed for easy installation in tight spaces, reducing installation complexity.
4. **Durable Construction** Made with stainless steel and other corrosion-resistant materials, it is suitable for both clean and slightly contaminated fluids.
5. **Digital Output Options** Supports analog (4 20 mA) and digital (pulse) outputs, allowing integration with PLCs, data loggers, or control systems.
6. **Low Maintenance** No moving parts in the sensing element, reducing wear and tear over time.
7. **Compatibility with Common Fluids** Works well with water, steam, and some gases, depending on the model variant.
8. **Calibration Stability** Hedland flowmeters are designed for long-term stability, minimizing drift over time.
9. **Easy Installation** Flanged or threaded connections (depending on model) simplify integration into existing piping systems.
10. **Cost-Effective for Small Applications** Priced reasonably for its performance, making it a practical choice for budget-conscious users who still need reliable flow measurement.
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#### **Cons:**1. **Limited Flow Range** The 0.2 2.0 GPM range may be too narrow for high-volume applications, requiring additional flow control or a different model for larger systems.
2. **Pressure Drop Considerations** Like most inline flowmeters, it introduces some pressure loss, which may affect system efficiency in low-pressure applications.
3. **Potential Clogging Risk** If used with dirty or particulate-laden fluids, the sensor may require frequent cleaning or filtration upstream.
4. **Calibration Dependency** Accuracy depends on proper installation and calibration; improper setup can lead to measurement errors.
5. **Limited Temperature Range** The standard model may not handle extremely high or low temperatures without special modifications.
6. **No Built-In Display** Unlike some flowmeters, this model does not include a local display, requiring external monitoring devices.
7. **Potential Signal Noise in Analog Outputs** In noisy environments, the 4 20 mA signal may require shielding or filtering for reliable readings.
8. **Vendor Dependency** Hedland is a niche manufacturer; parts and support may be harder to find compared to more mainstream brands.
9. **Not Ideal for High-Pressure Systems** Maximum pressure ratings should be checked to ensure compatibility with the application.
10. **Learning Curve for Advanced Features** While user-friendly, integrating digital outputs (e.g., pulse signals) may require some technical knowledge.
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### **Conclusion:**The **Hedland H201A-020-HT flowmeter** is a solid choice for applications requiring **accurate, low-maintenance flow measurement in the 0.2 2.0 GPM range**. Its **durability, precision, and ease of installation** make it well-suited for **HVAC, laboratory, irrigation, or small industrial processes** where space and cost are considerations. However, its **limited flow range, potential pressure drop, and dependency on proper installation** mean it may not be ideal for **high-volume, high-pressure, or heavily contaminated fluid applications**.
If your application **falls within its specified range and fluid compatibility**, this flowmeter offers a **reliable, cost-effective solution**. For **larger flows, extreme conditions, or complex monitoring needs**, you may need to consider **alternative models (e.g., turbine, ultrasonic, or magnetic flowmeters)** or **supplementary equipment (e.g., filters, pressure regulators)**.
### **Recommendation:** - **Buy if:**- You need **precise flow measurement in the 0.2 2.0 GPM range**.
- Your application involves **clean or lightly contaminated fluids** (water, steam, or gases).
- You require **compact, low-maintenance inline monitoring** with **analog or digital outputs**.
- Budget and space constraints favor a **mid-range flowmeter** without excessive features.
- **Consider alternatives if:**- Your flow rates **exceed 2.0 GPM** (requires a higher-range model).
- Your system operates at **extreme pressures or temperatures** beyond the meter s specs.
- You need **local display or advanced features** (e.g., wireless connectivity).
- The fluid is **highly abrasive or corrosive**, requiring a specialized material (e.g., ceramic or reinforced plastic).
For most **small-scale, precision-oriented applications**, the **Hedland H201A-020-HT is a strong, practical choice**. Always verify **fluid compatibility, pressure ratings, and installation requirements** before purchase.
Comes with what is shown. I am not sure if this is used, it appears unused and clean but selling as used because do know for. Add a buyers note that you would like to add. I got a few flow meters at an estate sale and all appeared in the same condition.
Hedland H201A-020-HT Flowmeter GPM/LPM 0.2 - 2.0 / 1-7.5, See pictures for accurate of condition.