Gas Roots Flowmeter Featuring 4-20mA Output and Aluminum Construction

• 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 is a state-of-the-art gas monitoring and measurement instrument designed to deliver exceptional accuracy, unmatched reliability, and an impressive operational range, making it indispensable for various applications.
The Intelligent Gas Roots Flowmeter revolutionizes traditional measurement with its integration of flow, temperature, and pressure sensors, combined with advanced intelligent instrumentation. This cutting-edge device is perfectly suited for accurate measurements of non-corrosive gases such as natural gas, city gas, propane, nitrogen, and a range of industrial inert gases.

CHARACTERISTIC

1. Wide range:
Crafted with versatility, the maximum range can soar up to an impressive 1:216, catering to various specification needs. Low starting flow:
2. With precision engineering, the minimum starting flow astoundingly reaches as low as 0.04m3/h, adapting to diverse operational requirements.
3. High precision and repeatability:
Engineered for excellence, its long-term precision remains unaffected by the medium, ensuring unwavering accuracy and stability throughout extended periods of operation.
Small pressure loss:
4. Designed to optimize performance, the pressure loss ranges between a minimal 0.08kPa and 0.58kPa. This high level of integration, combined with low power consumption, is made possible through cutting-edge microcomputer technology and high-performance integrated chips, enhancing the overall machine's capabilities and superior performance.
Compact structure:
5. Ingeniously built with a pressure sensor, temperature sensor, and flow sensor all internally housed, resulting in a more streamlined and compact structure. Digital pressure and temperature sensor
6. Outfitted with digital temperature and pressure sensors, each configured with unique calibration and verification, facilitating easy replacement, maintenance, and seamless usage.

7. Sectional correction:
Empowered by the flow frequency signal, the instrument's coefficient is automatically corrected across nine sections, significantly enhancing the instrument's wide-range accuracy with precision.
8. Complete data storage capabilities:
Featuring an E2PROM data storage chip, this intelligent device safeguards both user and manufacturer parameters. Its timely data-saving function acts as a shield against data loss during sudden power outages, ensuring that internal parameters are preserved indefinitely even in a power-off state.
9. The basic output is complete:
Boasting a comprehensive suite of outputs, the intelligent flowmeter provides base meter pulse output, working condition or standard condition pulse signal output, and calibration pulse output. Additionally, it offers a 4~20mA analog signal and RS485 communication to meet user-specific demands. Data traceability management
10. A real-time database can be queried and analyzed through an RS-485 communication interface.
GPRS real-time management system
11. This innovative series introduces the B-type meter with GPRS transmission capability, enabling seamless online, scheduled, and fixed-point transmission. It provides comprehensive monitoring of instrument data, control valves, pipeline pressure, gas alarms, and more, simplifying the creation of a robust GPRS wireless network system.

PRINCIPLE

The intelligent gas Roots flowmeter comprises a robust housing, a pair of conjugate rotors, and an intelligent flow integrator. The precisely machined calibration gears ensure the rotors maintain the correct relative positions under the pressure differential between inlet and outlet (P_in > P_out). This ensures optimal working clearances between rotors, the casing, and side plates, achieving a continuous non-contact seal. Every full rotor rotation outputs four times the effective volume of the metering chamber's gas.

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 certifications signify our enduring commitment to excellence and reliability. In 2019, we proudly achieved the esteemed 'National High-tech Enterprise' status. By 2023, we had earned the 'Special Equipment Manufacturing Production License.' Our extensive certification portfolio includes ISO Quality, Environmental, and Employee Safety System Certifications, Product Measuring Apparatus Type Approval Certificate, along with Explosion-proof and Intrinsically Safe Certificates for all product lines, SIL Safety Certificate, CE Certificate, and both 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 you are working with liquid, gas, or steam, identifying the fluid type is crucial.
The range of flow rate required: Determine the specific flow rate range that your application demands to ensure accurate measurement.
Pipe size and the material it is constructed from: Make sure to note the size and material of your pipes for proper fitting and durability.
Temperature and pressure conditions within the system: Assess the environmental conditions to select a flow meter that can withstand them.
The degree of accuracy needed, whether ±0.5% or ±1%: Decide on the precision level required for your operations to meet your quality standards.

Q: Where can I find installation guidelines?
A: Simply download our comprehensive PDF manual, available on our website, or reach out to our experts for personalized assistance tailored to your needs.

Q: What is the maximum pressure for your flow meters?
A: Our standard models endure up to 16 bar (232 psi), while our robust high-pressure editions can handle up to an impressive 100 bar (1450 psi), ensuring reliability under demanding conditions.

Q: Are your flow meters CE and ISO9001 certified?
A: Absolutely, our flow meters strictly 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 scientifically structured and standardized, guaranteeing internationally recognized quality and safety.

Q: What documents do you provide for export?
A: We offer a comprehensive export package, including a Commercial Invoice, Packing List, Bill of Lading, Certificate of Conformity (COC), and more, ensuring seamless and hassle-free international transactions.

Q: How do I place an order?
A: Reach out to us via email or phone for a detailed quote, then solidify your order with a purchase order (PO). Our team is ready to assist you every step of the way to ensure a smooth process.