Gas Roots Flowmeter with Pulse Output, 24VDC and Aluminum Body

• 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 an exceptional gas monitoring and measurement device renowned for its unparalleled accuracy, unwavering reliability, and impressive operational range.
The Intelligent Gas Roots Flowmeter represents the pinnacle of modern flow measurement technology. It seamlessly combines flow, temperature, and pressure sensors with sophisticated instrumentation, making it the ultimate choice for measuring non-corrosive gases such as natural gas, city gas, propane, nitrogen, and various industrial inert gases.

CHARACTERISTIC

1. Wide Range:
Boasting a remarkable range, the maximum capacity varies by specification and can achieve an impressive 1:216 ratio, ensuring low starting flow capability.
2. The minimum starting flow is designed to accommodate different specifications, reaching as low as 0.04 m³/h to meet diverse needs.
3. Exceptional Precision and Repeatability:
Long-term accuracy remains unaffected by the medium, ensuring stable and reliable performance over extended periods.
Minimal Pressure Loss:
4. Depending on the specification, pressure loss ranges from 0.08 kPa to 0.58 kPa. Thanks to advanced microcomputer technology and high-performance integrated chips, the device boasts high integration and low power consumption, delivering outstanding performance.
Compact Design:
5. Featuring a built-in pressure sensor, temperature sensor, and flow sensor, the flowmeter's compact structure is enhanced for seamless integration. Digital sensors for pressure and temperature ensure precision.
6. The digital temperature and pressure sensors are equipped with separate calibration and verification, simplifying replacement, maintenance, and use.

7. Sectional Correction:
Through the flow frequency signal, the instrument coefficient can be divided into nine sections for automatic linear correction, significantly enhancing range accuracy.
8. Comprehensive Data Storage Capabilities:
Utilizing an E2PROM data storage chip, it secures user and manufacturer parameters. The timely data-saving function prevents data loss during unexpected power failures, ensuring permanent preservation of internal parameters.
9. Complete Output Functionality:
The intelligent flowmeter offers base meter pulse output, standard or working condition pulse signal output, calibration pulse output, and user-configurable 4~20mA analog signal and RS485 communication capabilities. It supports comprehensive data traceability management.
10. Real-time data can be queried and analyzed through an RS-485 communication interface, enhancing data accessibility.
GPRS Real-time Management System:
11. This series includes a B-type meter equipped with GPRS transmission capabilities, enabling online, scheduled, and fixed-point data transmission. It facilitates monitoring of instrument data, valve control, pipeline pressure, gas alarms, and more, providing seamless integration into a GPRS wireless network system.

PRINCIPLE

The Intelligent Gas Roots Flowmeter is a sophisticated assembly of a housing, conjugate rotor, and intelligent flow integrator. A pair of conjugate rotors within the metering chamber are meticulously positioned by precisely machined calibration gears, driven by the pressure differential between the inlet and outlet (P_in > P_out). This configuration maintains optimal working clearances, ensuring continuous non-contact sealing. Each complete rotor revolution results in the output of four times the effective volume of 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 Certified and Qualified:

Our extensive certifications underscore our expertise and dependability. In 2019, we proudly received the 'National High-tech Enterprise' designation. By 2023, we had earned the 'Special Equipment Manufacturing Production License.' Our certifications encompass ISO Quality, Environmental, and Employee Safety System Certifications, Product Measuring Apparatus Type Approval Certificate, Explosion-proof and Intrinsically Safe Certificates across all product lines, SIL Safety Certificate, CE Certificate, along with Invention and Utility Model Patent Certificates, affirming our commitment to excellence.

FAQ

Q: How do I select the right flow meter for my application?
A: Consider these pivotal factors:
The type of fluid: liquid, gas, or steam. Ensure compatibility and efficiency by matching the flow meter to your specific fluid type.
The range of flow rate required. Be certain to choose a flow meter that accommodates your system's flow rate spectrum for optimal performance.
Pipe size and the material it is constructed from. Select a meter that seamlessly integrates with your pipeline specifications for a flawless fit.
Temperature and pressure conditions within the system. Guarantee reliable measurements by selecting a meter that withstands your system's environmental parameters.
The degree of accuracy needed, whether ±0.5% or ±1%. Choose the precision level that aligns with your operational demands for accurate and dependable readings.

Q: Where can I find installation guidelines?
A: Simply download our comprehensive PDF manual or reach out to us for personalized assistance. Our expert team is ready to guide you through every step of the installation process.

Q: What is the maximum pressure for your flow meters?
A: Our standard models endure up to 16 bar (232 psi), while our high-pressure editions can handle an impressive 100 bar (1450 psi), catering to a wide array of industrial needs.

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

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

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 dedicated to providing you with a smooth and efficient ordering experience.