Gas Roots Flowmeter with 4-20mA Signal, Durable Aluminum Alloy

• 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
• Power Supply: 24VDC, 3.6VDC Battery
• Transport Package: Wooden Box Package or Carbon
• Trademark: HuaLiu
• Origin: China
• HS Code: 9026100000
• Production Capacity: 5000pieces/Year

Product Description

SUMMARY

Gas Roots Flowmeter

The Gas Roots flowmeter stands as a pinnacle of precision engineering in gas monitoring and measurement. Distinguished by its exceptional accuracy, unwavering reliability, and a broad operational range, it is an indispensable tool for any industry requiring meticulous gas management.
The Intelligent Gas Roots Flowmeter is an innovation that combines the traditional Roots flowmeter with advanced sensors for flow, temperature, and pressure, alongside cutting-edge intelligent instrumentation. This remarkable device is perfectly suited for accurate measurement of non-corrosive gases, such as natural gas, city gas, propane, nitrogen, and various industrial inert gases, making it an ideal choice for a wide array of applications.

CHARACTERISTIC

1. Wide range:
Boasting an impressive maximum range ratio of up to 1:216, this flowmeter accommodates diverse specifications, ensuring versatility in low starting flows.
2. With specifications tailored for precision, the minimum starting flow can achieve an astonishingly low 0.04m3/h, showcasing its sensitivity and adaptability.
3. High precision and repeatability:
Delivering consistent long-term accuracy unaffected by the medium, this flowmeter maintains stable precision throughout extended operations.
Small pressure loss:
4. Depending on specifications, experience minimal pressure loss ranging from 0.08kPa to 0.58kPa. With high integration and low power consumption, advanced microcomputer technology and high-performance integrated chips empower this flowmeter with outstanding capabilities and superior performance.
Compact structure:
5. Featuring an innovative design, the pressure, temperature, and flow sensors are seamlessly integrated, resulting in a more compact structure. These digital sensors offer unparalleled precision.
6. Equipped with digital temperature and pressure sensors, each calibrated and verified independently, this flowmeter ensures easy replacement, maintenance, and usage, enhancing operational efficiency.

7. Sectional correction:
Through flow frequency signal analysis, the instrument coefficient is segmented into nine distinct sections for automatic linear correction, significantly enhancing the instrument's wide range accuracy.
8. Complete data storage capabilities:
Incorporating an E2PROM data storage chip, this flowmeter securely saves user and manufacturer parameters. Its timely data-saving function prevents data loss during sudden power failures, ensuring permanent retention of internal parameters even without power.
9.The basic output is complete:
The intelligent flow meter provides comprehensive output options, including base meter pulse, working and standard condition pulse signals, calibration pulse output, and a 4~20mA analog signal. Additionally, it supports RS485 communication, offering robust data traceability management.
10. A real-time database is readily accessible through the RS-485 communication interface for in-depth querying and analysis.
GPRS real-time management system
11. The B-type meter in this series is equipped with GPRS transmission functionality, enabling seamless online, scheduled, and pinpoint data transmission. It facilitates monitoring of instrument data, valve control, pipeline pressure, and gas alarms, simplifying the construction of a comprehensive GPRS wireless network system.

PRINCIPLE

Built with precision, the intelligent gas Roots flowmeter comprises a robust housing, conjugate rotor, and an intelligent flow integrator. The precisely machined calibration gears ensure the correct relative positioning of the conjugate rotors within the metering chamber. Operating under the pressure differential between the inlet and outlet (P_in > P_out), the flowmeter maintains optimal working clearances for continuous, non-contact sealing. Each full rotor rotation outputs four times the effective volume of the metering chamber, ensuring efficient gas measurement.

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 impressive array of certifications speaks volumes about our unwavering strength and dependability. In 2019, we were proudly recognized as a 'National High-tech Enterprise.' By 2023, we achieved the distinguished 'Special Equipment Manufacturing Production License.' Our extensive certification portfolio includes ISO Quality, Environmental, and Employee Safety System Certifications, Product Measuring Apparatus Type Approval Certificate, and Explosion-proof and Intrinsically Safe Certificates for all our product lines. Additionally, we proudly hold the SIL Safety Certificate, CE Certificate, and a collection of Invention and Utility Model Patent Certificates.

FAQ

Q: How can I choose the ideal flow meter for my needs?
A: Take into account these crucial considerations:
The fluid type: liquid, gas, or steam must be determined.
The necessary range of flow rate should be assessed.
Consider the pipe size and the material from which it is made.
Evaluate the temperature and pressure conditions within your system.
The level of accuracy required, such as ±0.5% or ±1%, should be specified.

Q: Where are installation guidelines available?
A: You can easily download our detailed PDF manual or contact us directly for expert advice and personalized assistance.

Q: What is the maximum pressure capacity of your flow meters?
A: Our standard models can withstand pressures up to 16 bar (232 psi), while our high-pressure variants are designed to handle up to an impressive 100 bar (1450 psi).

Q: Are your flow meters certified with CE and ISO9001?
A: Absolutely, our flow meters meet the rigorous standards set by the European Union (EU), ensuring compliance with safety, health, and environmental protection laws. Our management system is both scientific and standardized, which guarantees internationally recognized quality and safety.

Q: What export documentation do you provide?
A: We provide a complete export package, which includes a Commercial Invoice, Packing List, Bill of Lading, COC, and additional documents, ensuring smooth and hassle-free international transactions.

Q: How can I place an order with you?
A: Contact us via email or phone for a comprehensive quote, and then finalize your order with a purchase order (PO).