High-Precision Roots Flowmeter for Reliable Gas Flow Monitoring

• Customization: Available
• Warranty: 15 Months
• Accuracy: 1.5%,1%
• Model NO.: HL-LLQ
• Main Application: Nature Gas
• Size: DN25-DN150
• Sensor: Tube/Flange
• Application: Energy Metering
• Type: Turbine Flow Meter
• Measuring Media: Gas
• Measuring Principle: Electrical Principles
• Measurement Object: Closed Pipeline
• Certification: CE, ISO
• Output Type: RS485, Pulse and 4-20mA
• Body Material: Aluminum Alloy,Cast Iron or Stainless Steel
• Power Supply: 24VDC, 3.6VDC Battery
• Explosion-Proof Form: Exdiict6
• Transport Package: Wooden Box Package or Carbon
• Trademark: HuaLiu
• Origin: China
• HS Code: 9026100000
• Production Capacity: 5000pieces/Year
• Package Size: 60.00cm * 29.00cm * 26.00cm
• Package Gross Weight: 8.000kg

Product Description

SUMMARY

Gas Roots Flowmeter

The Gas Roots flowmeter stands as a pinnacle of precision in the realm of gas monitoring and measurement. Boasting exceptional accuracy, unwavering reliability, and an extensive measurement range, this instrument is indispensable for any application requiring meticulous gas flow assessment.
The Intelligent Gas Roots Flowmeter represents a groundbreaking evolution in flow measurement technology. Merging the foundational principles of the Roots flowmeter with cutting-edge sensors for flow, temperature, and pressure, this device emerges as the quintessential tool for non-corrosive gas measurement. Ideal for applications involving natural gas, city gas, propane, nitrogen, and various industrial inert gases, the Intelligent Gas Roots Flowmeter is engineered to provide unparalleled measurement precision and operational excellence.

CHARACTERISTIC

1. Expansive Measurement Range:
Depending on the selected specifications, the flowmeter offers a staggering maximum range of 1:216, with a remarkably low starting flow:
2. The minimum starting flow can be as low as 0.04m3/h, tailored to specific specifications.
3. Superior Precision and Consistency:
Achieving long-term measurement stability, this flowmeter maintains its accuracy regardless of the medium, ensuring consistent performance over prolonged usage periods.
Minimal Pressure Loss:
4. Engineered with precision, the pressure loss remains between 0.08kPa and 0.58kPa across different specifications. The flowmeter boasts high integration and low power consumption, harnessing advanced microcomputer technology and top-tier integrated chips to deliver robust performance and exceptional capabilities.
Compact and Efficient Design:
5. Integrating pressure, temperature, and flow sensors within a singular unit, the flowmeter's design is markedly compact. The inclusion of digital pressure and temperature sensors ensures seamless functionality.
6. The digital temperature and pressure sensors come equipped with independent calibration and verification features, simplifying replacement, maintenance, and operational processes.

7. Advanced Sectional Correction:
Utilizing the flow frequency signal, the instrument's coefficient is segmented into nine distinct sections for automatic linear correction, significantly enhancing the instrument's accuracy across a broad range.
8. Comprehensive Data Storage Capacity:
Equipped with an E2PROM data storage chip, this flowmeter preserves both user and manufacturer parameters. Its timely data-saving function safeguards against data loss during unexpected power outages, ensuring that internal parameters remain permanently intact even when power is lost.
9. Extensive Output Options:
The intelligent flow meter is equipped with a comprehensive array of outputs, including base meter pulse output, working or standard condition pulse signal output, and calibration pulse output. Additionally, it can deliver a 4~20mA analog signal and RS485 communication to meet user-specific requirements, facilitating efficient data management and traceability.
10. Real-Time Database Access:
Through an RS-485 communication interface, a real-time database is accessible for in-depth analysis and query.
11. The B-type meter in this series features a GPRS transmission capability, enabling seamless online, scheduled, and fixed-point data transmission. It allows for comprehensive monitoring of instrument data, valve control, pipeline pressure, gas alarms, and more, simplifying the construction of a GPRS wireless network system.

PRINCIPLE

The Intelligent Gas Roots Flowmeter is meticulously constructed from a robust housing, conjugate rotor, and an advanced flow integrator. The conjugate rotors within the metering chamber are maintained in precise alignment through expertly machined calibration gears, driven by the pressure differential between the inlet and outlet (P_in > P_out). This design ensures optimal working clearances are preserved between all components, facilitating continuous, non-contact sealing. Each complete rotation of the rotor results in the output of four times the effective volume of gas from the metering chamber.

TECHNICAL PARAMETER

Nominal diameter(mm)	range ratio	Flow range(m³/h)	starting flow(m³/h)	Pressure loss Pa at Qmax	Maximum working pressure MPa	Nominal pressure MPa	material
25	20:1	1-20	0.07	110	0.4	1.6	aluminum cast iron
40	40:1	1-40	0.06	140
50	30:1	2-60	0.07	120
50	40:1	2-80	0.07	160
80	35:1	3-100	0.06	170
80	50:1	3-150	0.05	150
80	50:1	4-200	0.15	180	0.4 0.6
100	80:1	4-300	0.12	200
100	90:1	5-450	0.11	400
150	80:1	8-650	0.65	560
150	90:1	11-1100	0.8	600

Complete Qualifications

Fully Qualified

Our distinguished certifications underscore our commitment to excellence and reliability. In 2019, we were awarded the esteemed 'National High-tech Enterprise' designation. By 2023, we had secured the 'Special Equipment Manufacturing Production License.' Our expansive portfolio of certifications includes ISO Quality, Environmental, and Employee Safety System Certifications, Product Measuring Apparatus Type Approval Certificate, and comprehensive Explosion-proof and Intrinsically Safe Certificates across all product lines. Additionally, we have obtained the SIL Safety Certificate, CE Certificate, as well as numerous Invention and Utility Model Patent Certificates.

FAQ

Q: How do I select the right flow meter for my application?
A: Consider these pivotal factors to ensure optimal performance and compatibility:
The type of fluid: Whether it's liquid, gas, or steam, select a flow meter tailored to your specific medium.
The range of flow rate required: Identify the flow rate spectrum to match your system's demands accurately.
Pipe size and the material it is constructed from: Ensure the flow meter fits seamlessly with your existing pipeline dimensions and materials.
Temperature and pressure conditions within the system: Choose a model that withstands your operational conditions for peak efficiency.
The degree of accuracy needed, whether ±0.5% or ±1%: Decide based on the precision requirements of your application.

Q: Where can I find installation guidelines?
A: Simply download our comprehensive PDF manual, which contains detailed instructions and illustrations, or reach out to us for personalized guidance and expert assistance.

Q: What is the maximum pressure for your flow meters?
A: Our standard models are robust enough to endure up to 16 bar (232 psi), while our specially designed high-pressure editions can withstand an impressive 100 bar (1450 psi).

Q: Are your flow meters CE and ISO9001 certified?
A: Absolutely, our flow meters are meticulously engineered to adhere to the stringent laws and standards of the European Union (EU), fulfilling the EU's rigorous requirements for safety, health, and environmental protection. Our management system is both scientific and standardized, guaranteeing internationally recognized quality and safety.

Q: What documents do you provide for export?
A: We offer a comprehensive export documentation package, including a Commercial Invoice, Packing List, Bill of Lading, COC, and more, ensuring seamless international transactions with complete compliance and efficiency.

Q: How do I place an order?
A: Reach out to us via email or phone for a detailed quote tailored to your needs, then solidify your order with a purchase order (PO) for a smooth and efficient transaction.